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Air-cooled screw chiller controller · BACnet points list
Trane Symbio 800 RTAC (UC800) BACnet points list
Updated 28 October 2026
Short answer
A Symbio 800 list of about 335 objects for RTAC chillers marked UC800, with small instance numbers. About 240 are diagnostic binary inputs (BI 500 and up); the rest are temperatures, pressures, motor currents and run data. The BAS writes chilled water setpoint and current limit (AV), auto/stop and mode (MV) and diagnostic reset (BV).
This page lists 335 BACnet objects for the Trane Symbio 800 RTAC (UC800) — 5 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Trane’s own free documentation, linked below.
- Manufacturer
- Trane
- Model
- Symbio 800 RTAC (UC800)
- Equipment
- Air-cooled screw chiller controller
- Equipment type
- Chillers
- BACnet objects
- 335 (5 writable)
- Transport
- BACnet IP, BACnet MS/TP
- Firmware
- Not stated
- Also known as
- RTAC, Series R RTAC, RTAC UC800, UC800, BAS-PTS032
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Reference only, provided as-is: verify against Trane’s current documentation and the live device before use. Not official Trane information. Terms of use.
BMS integration notes: Trane Symbio 800 RTAC (UC800)
Integration in brief
Put the chiller on the network (BACnet MS/TP or IP), then write the auto/stop command, chilled water setpoint, current limit and mode. Read back running state, leaving water temperature and capacity. Check the local-setpoint flag to confirm the BAS setpoints are actually in use. The alarm-present flag gives a single summary alarm.
Minimum points to map
The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.
| Object | Name | Why | Access |
|---|---|---|---|
| MV 1 | BAS Chiller Auto Stop Command | BMS auto/stop command (1 = Stop, 2 = Auto) | Write |
| MV 2 | BAS Chiller Mode Command | Cool/ice mode command | Write |
| AV 1 | BAS Chilled Water Setpoint | Chilled water setpoint from the BMS | Write |
| AV 2 | BAS Current Limit Setpoint | Current limit from the BMS, % RLA | Write |
| BI 4 | Chiller Running Indicator | Chiller on/off status | Read |
| BI 2 | Local Setpoint Control | Shows if local setpoints override BAS setpoints | Read |
| AI 45 | Evaporator Leaving Water Temp | Leaving chilled water temperature | Read |
| AI 5 | Actual Running Capacity | Actual running capacity in percent | Read |
| BI 23 | Alarm Present | Any active alarm on the chiller | Read |
Enable & remote start
MV 1 BAS Chiller Auto Stop Command (1 = Stop, 2 = Auto; relinquish default Auto) is the BMS auto/stop. BI 1 Run Enabled shows stop/auto. The document doesn't say how to hand setpoint control to the BAS; BI 2 Local Setpoint Control shows when the chiller is using local setpoints instead of BAS setpoints.
Heartbeat & communication loss
No timeout or heartbeat is described. BI 742 'Comm Loss: Local BAS Interface' is a diagnostic flag; the document doesn't say what the chiller does when it is set.
Network setup
- With no protocol specified at order, the controller ships as BACnet MS/TP at 76,800 bps with the rotary address at 000, and MS/TP is disabled at 000. Set a rotary address of 001-127 to bring it online.
- The rotary address sets the MS/TP MAC and the Device ID and takes effect without a power cycle. A software Device ID (1-4194302) can be set in the web UI, Tracer SC+ or Tracer TU.
- The web UI is reached only over USB at http://198.80.18.1/; the Ethernet ports do not serve it.
- BACnet IP uses Ethernet port 1 (or the optional USB Wi-Fi adapter); the default UDP port is 47808. Enable BBMD only if this is the only BACnet IP device on the subnet, then fill in the BDT.
- MS/TP wiring lands on the P1 link; P2 and P3 are for factory devices only, and Ethernet port 2 is only for the touch-screen display.
Watch out for
- Communicated units (I-P or SI) are fixed at the factory; changing them in the field needs a Trane representative. Web UI display units do not change the BACnet values.
- Points that don't apply to the unit's configuration are absent, and a technician can 'recycle' (remove) factory points from the interface, so a missing object may have been recycled.
- This list has no read/write column; writability of the command and setpoint objects is inferred from their object type and relinquish defaults.
- Relinquish defaults: AV 1 44 °F (6.7 °C), AV 2 100 % RLA, MV 1 Auto, MV 2 Cool. Releasing MV 1 leaves the chiller in Auto.
- Mode states skip 2: MV 2 and MI 2 use 1 = Cool and 3 = Ice.
- Diagnostic BIs are one object per alarm condition and only exist for the options fitted.
Trane Symbio 800 RTAC (UC800) BACnet objects
Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.
Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 1 | Active Chilled Water Setpoint | Read | |||
| AI | 2 | Active Current Limit Setpoint | Read | |||
| AImin | 5 | Actual Running Capacity | Read | |||
| AI | 6 | Evaporator Refrigerant Pressure - Ckt1 | Read | |||
| AI | 9 | Evaporator Refrigerant Pressure - Ckt 2 | Read | |||
| AI | 12 | Evaporator Saturated Refrigerant Temperature- Ckt 1 | Read | |||
| AI | 14 | Evaporator Saturated Refrigerant Temperature- Ckt 2 | Read | |||
| AI | 16 | Condenser Refrigerant Pressure - Ckt 1 | Read | |||
| AI | 18 | Condenser Refrigerant Pressure - Ckt 2 | Read | |||
| AI | 20 | Condenser Saturated Refrigerant Temperature - Ckt 1 | Read | |||
| AI | 22 | Condenser Saturated Refrigerant Temperature - Ckt 2 | Read | |||
| AI | 25 | Local Atmospheric Pressure | Read | |||
| AI | 26 | Starts- Compressor 1A | Read | |||
| AI | 27 | Starts- Compressor 1B | Read | |||
| AI | 28 | Starts- Compressor 2A | Read | |||
| AI | 29 | Starts- Compressor 2B | Read | |||
| AI | 34 | Run Time- Compressor 1A | Read | |||
| AI | 35 | Run Time- Compressor 1B | Read | |||
| AI | 36 | Run Time- Compressor 2A | Read | |||
| AI | 37 | Run Time- Compressor 2B | Read | |||
| AI | 42 | Airflow Percentage- Circuit 1 | Read | |||
| AI | 43 | Airflow Percentage- Circuit 2 | Read | |||
| AI | 44 | Evaporator Entering Water Temp | Read | |||
| AImin | 45 | Evaporator Leaving Water Temp | Read | |||
| AI | 48 | High Side Oil Pressure - Compressor 1A | Read | |||
| AI | 49 | High Side Oil Pressure - Compressor 1B | Read | |||
| AI | 50 | High Side Oil Pressure - Compressor 2A | Read | |||
| AI | 51 | High Side Oil Pressure - Compressor 2B | Read | |||
| AI | 52 | Oil Temp - Compressor 1A | Read | |||
| AI | 53 | Oil Temp - Compressor 1B | Read | |||
| AI | 54 | Oil Temp - Compressor 2A | Read | |||
| AI | 55 | Oil Temp - Compressor 2B | Read | |||
| AI | 57 | Outdoor Air Temperature | Read | |||
| AI | 59 | Motor Voltage AB Starter 1A | Read | |||
| AI | 60 | Motor Voltage AB Starter 1B | Read | |||
| AI | 61 | Motor Voltage AB Starter 2A | Read | |||
| AI | 71 | Motor Current L1 Starter 1A | Read | |||
| AI | 72 | Motor Current L2 Starter 1A | Read | |||
| AI | 73 | Motor Current L3 Starter 1A | Read | |||
| AI | 74 | Motor Current L1 Starter 1B | Read | |||
| AI | 75 | Motor Current L2 Starter 1B | Read | |||
| AI | 76 | Motor Current L3 Starter 1B | Read | |||
| AI | 77 | Motor Current L1 Starter 2A | Read | |||
| AI | 78 | Motor Current L2 Starter 2A | Read | |||
| AI | 79 | Motor Current L3 Starter 2A | Read | |||
| AI | 80 | Motor Current L1 Starter 2B | Read | |||
| AI | 81 | Motor Current L2 Starter 2B | Read | |||
| AI | 82 | Motor Current L3 Starter 2B | Read | |||
| AI | 83 | Motor Current L1 % RLA Starter 1A | Read | |||
| AI | 84 | Motor Current L2 % RLA Starter 1A | Read | |||
| AI | 85 | Motor Current L3 % RLA Starter 1A | Read | |||
| AI | 86 | Motor Current L1 % RLA Starter 1B | Read | |||
| AI | 87 | Motor Current L2 % RLA Starter 1B | Read | |||
| AI | 88 | Motor Current L3 % RLA Starter 1B | Read | |||
| AI | 89 | Motor Current L1 % RLA Starter 2A | Read | |||
| AI | 90 | Motor Current L2 % RLA Starter 2A | Read | |||
| AI | 91 | Motor Current L3 % RLA Starter 2A | Read | |||
| AI | 92 | Motor Current L1 % RLA Starter 2B | Read | |||
| AI | 93 | Motor Current L2 % RLA Starter 2B | Read | |||
| AI | 94 | Motor Current L3 % RLA Starter 2B | Read | |||
| AI | 95 | Number of Circuits | Read | |||
| AI | 96 | Number of Compressors, Ckt 1 | Read | |||
| AI | 97 | Number of Compressors, Ckt 2 | Read | |||
| AI | 98 | Chiller Design Capacity | Read | |||
| AI | 100 | Output Power AFD 1A | Read | |||
| AI | 101 | Output Power AFD 2A | Read | |||
| AI | 102 | Discharge Temperature Cprsr 1A | Read | |||
| AI | 103 | Discharge Temperature Cprsr 2A | Read | |||
| AI | 106 | Frequency Command Cprsr 1A | Read | |||
| AI | 107 | Frequency Command Cprsr 2A | Read | |||
| AI | 108 | Average Motor Current % RLA AFD 1A | Read | |||
| AI | 109 | Average Motor Current % RLA AFD 2A | Read | |||
| AVmin | 1 | BAS Chilled Water Setpoint | Write | |||
| AVmin | 2 | BAS Current Limit Setpoint | Write | |||
| BI | 1 | Run Enabled | Read | 0 = Stop, 1 = Auto | ||
| BImin | 2 | Local Setpoint Control | Read | 0 = Remote, 1 = Local | ||
| BI | 3 | Chiller Limit Mode Indicator | Read | 0 = Not limited, 1 = Limited | ||
| BImin | 4 | Chiller Running Indicator | Read | 0 = Off, 1 = On | ||
| BI | 6 | Maximum Capacity | Read | 0 = Off, 1 = On | ||
| BI | 9 | Compressor 1A Running | Read | 0 = Off, 1 = Running | ||
| BI | 10 | Compressor 1B Running | Read | 0 = Off, 1 = Running | ||
| BI | 11 | Compressor 2A Running | Read | 0 = Off, 1 = Running | ||
| BI | 12 | Compressor 2B Running | Read | 0 = Off, 1 = Running | ||
| BI | 17 | Evaporator Water Pump Command | Read | 0 = Off, 1 = On | ||
| BI | 22 | Evaporator Water Flow Status | Read | 0 = No flow, 1 = Flow | ||
| BImin | 23 | Alarm Present | Read | 0 = No alarm, 1 = Alarm | ||
| BI | 24 | Shutdown Alarm Present | Read | 0 = No alarm, 1 = Alarm | ||
| BI | 500 | AFD Fault – 1A | Read | |||
| BI | 502 | AFD Fault–2A | Read | |||
| BI | 504 | AFD Motor Current Overload – 1A | Read | |||
| BI | 506 | AFD Motor Current Overload – 2A | Read | |||
| BI | 508 | AFD Interrupt Failure – 1A | Read | |||
| BI | 510 | AFD Interrupt Failure – 2A | Read | |||
| BI | 512 | Starter Did Not Transition - 1A | Read | |||
| BI | 513 | Starter Did Not Transition - 1B | Read | |||
| BI | 514 | Starter Did Not Transition - 2A | Read | |||
| BI | 515 | Starter Did Not Transition - 2B | Read | |||
| BI | 516 | Phase Reversal - 1A | Read | |||
| BI | 517 | Phase Reversal - 1B | Read | |||
| BI | 518 | Phase Reversal - 2A | Read | |||
| BI | 519 | Phase Reversal - 2B | Read | |||
| BI | 520 | Starter Dry Run Test - 1A | Read | |||
| BI | 521 | Starter Dry Run Test- 1B | Read | |||
| BI | 522 | Starter Dry Run Test - 2A | Read | |||
| BI | 523 | Starter Dry Run Test - 2B | Read | |||
| BI | 524 | Phase Loss - 1A | Read | |||
| BI | 525 | Phase Loss - 1B | Read | |||
| BI | 526 | Phase Loss-2A | Read | |||
| BI | 527 | Phase Loss-2B | Read | |||
| BI | 528 | Power Loss - 1A | Read | |||
| BI | 529 | Power Loss - 1B | Read | |||
| BI | 530 | Power Loss - 2A | Read | |||
| BI | 531 | Power Loss - 2B | Read | |||
| BI | 532 | Severe CurrentPhase UnbalanceImbalance - Cprsr 1A | Read | |||
| BI | 533 | Severe CurrentPhase UnbalanceImbalance - Cprsr 1B | Read | |||
| BI | 534 | Severe CurrentPhase UnbalanceImbalance - Cprsr 2A | Read | |||
| BI | 535 | Severe CurrentPhase UnbalanceImbalance - Cprsr 2B | Read | |||
| BI | 536 | Starter Fault Type I – 1A | Read | |||
| BI | 537 | Starter Fault Type I – 1B | Read | |||
| BI | 538 | Starter Fault Type I – 2A | Read | |||
| BI | 539 | Starter Fault Type I –2B | Read | |||
| BI | 540 | Starter Fault Type II – 1A | Read | |||
| BI | 541 | Starter Fault Type II –1B | Read | |||
| BI | 542 | Starter Fault Type II –2A | Read | |||
| BI | 543 | Starter Fault Type II – 2B | Read | |||
| BI | 544 | Starter Fault Type III – 1A | Read | |||
| BI | 545 | Starter Fault Type III –1B | Read | |||
| BI | 546 | Starter Fault Type III –2A | Read | |||
| BI | 547 | Starter Fault Type III –2B | Read | |||
| BI | 548 | Transition Complete Input Shorted –1A | Read | |||
| BI | 549 | Transition Complete Input Shorted –1B | Read | |||
| BI | 550 | Transition Complete Input Shorted –2A | Read | |||
| BI | 551 | Transition Complete Input Shorted –2B | Read | |||
| BI | 552 | Transition Complete Input Opened –1A | Read | |||
| BI | 553 | Transition Complete Input Opened –1B | Read | |||
| BI | 554 | Transition Complete Input Opened –2A | Read | |||
| BI | 555 | Transition Complete Input Opened –2B | Read | |||
| BI | 556 | Motor Current Overload Trip - Cprsr 1A | Read | |||
| BI | 557 | Motor Current Overload Trip - Cprsr 1B | Read | |||
| BI | 558 | Motor Current Overload Trip - Cprsr 2A | Read | |||
| BI | 559 | Motor Current Overload Trip - Cprsr 2B | Read | |||
| BI | 560 | Starter Contactor Interrupt Failure - 1A | Read | |||
| BI | 561 | Starter Contactor Interrupt Failure - 1B | Read | |||
| BI | 562 | Starter Contactor Interrupt Failure - 2A | Read | |||
| BI | 563 | Starter Contactor Interrupt Failure - 2B | Read | |||
| BI | 564 | Over Voltage | Read | |||
| BI | 565 | Under Voltage | Read | |||
| BI | 566 | MP: Reset Has Occurred | Read | |||
| BI | 567 | Low Evaporator Rfgt Temperature - Ckt1 | Read | |||
| BI | 568 | Low Evaporator Rfgt Temperature - Ckt2 | Read | |||
| BI | 569 | Low Oil Flow - Cprsr 1A | Read | |||
| BI | 570 | Low Oil Flow - Cprsr 1B | Read | |||
| BI | 571 | Low Oil Flow- Cprsr 2A | Read | |||
| BI | 572 | Low Oil Flow - Cprsr 2B | Read | |||
| BI | 573 | Low Differential Rfgt Pressure - Ckt1 | Read | |||
| BI | 574 | Low Differential Rfgt Pressure - Ckt2 | Read | |||
| BI | 575 | High Differential Rfgt Pressure - Ckt1 | Read | |||
| BI | 576 | High Differential Rfgt Pressure - Ckt2 | Read | |||
| BI | 577 | High Oil Temperature – 1A | Read | |||
| BI | 578 | High Oil Temperature –1B | Read | |||
| BI | 579 | High Oil Temperature –2A | Read | |||
| BI | 580 | High Oil Temperature – 2B | Read | |||
| BI | 581 | Oil Temperature Sensor – 1A | Read | |||
| BI | 582 | Oil Temperature Sensor – 1B | Read | |||
| BI | 583 | Oil Temperature Sensor–2A | Read | |||
| BI | 584 | Oil Temperature Sensor–2B | Read | |||
| BI | 585 | Evaporator Liquid Level Sensor– Ckt1 | Read | |||
| BI | 586 | Evaporator Liquid Level Sensor– Ckt2 | Read | |||
| BI | 587 | Condenser Fan VFD Fault - Ckt 1 Dr 1 | Read | |||
| BI | 588 | Condenser Fan VFD Fault - Ckt1 Dr 2 | Read | |||
| BI | 589 | Condenser Fan VFD Fault - Ckt2 Dr 1 | Read | |||
| BI | 590 | Condenser Fan VFD Fault - Ckt2 Dr 2 | Read | |||
| BI | 593 | Low Evaporator Liquid Level – Ckt1 | Read | |||
| BI | 594 | Low Evaporator Liquid Level – Ckt2 | Read | |||
| BI | 595 | High Evaporator Liquid Level – Ckt1 | Read | |||
| BI | 596 | High Evaporator Liquid Level – Ckt2 | Read | |||
| BI | 597 | Evaporator Rfgt Drain – Circuit 1 | Read | |||
| BI | 598 | Evaporator Rfgt Drain – Circuit 2 | Read | |||
| BI | 599 | External Chilled Water Setpoint | Read | |||
| BI | 600 | External Current Limit Setpoint | Read | |||
| BI | 601 | Evap Water Flow (Entering Water Temp) | Read | |||
| BI | 602 | Evaporator Entering Water Temp Sensor | Read | |||
| BI | 603 | Evaporator Leaving Water Temp Sensor | Read | |||
| BI | 604 | Condenser Rfgt Pressure Transducer - Ckt1 | Read | |||
| BI | 605 | Condenser Rfgt Pressure Transducer - Ckt2 | Read | |||
| BI | 606 | Suction Refrigerant Pressure Sensor- 1A | Read | |||
| BI | 607 | Suction Refrigerant Pressure Sensor - 1B | Read | |||
| BI | 608 | Suction Refrigerant Pressure Sensor - 2A | Read | |||
| BI | 609 | Suction Refrigerant Pressure Sensor - 2B | Read | |||
| BI | 610 | Intermediate Oil Press Xdcr - Cprsr 1A | Read | |||
| BI | 611 | Intermediate Oil Press Xdcr - Cprsr 1B | Read | |||
| BI | 612 | Intermediate Oil Press Xdcr - Cprsr 2A | Read | |||
| BI | 613 | Intermediate Oil Press Xdcr - Cprsr 2B | Read | |||
| BI | 614 | Oil Flow Protection Fault - 1A | Read | |||
| BI | 615 | Oil Flow Protection Fault - 1B | Read | |||
| BI | 616 | Oil Flow Protection Fault - 2A | Read | |||
| BI | 617 | Oil Flow Protection Fault - 2B | Read | |||
| BI | 618 | Low Suction Rfgt Pressure – Ckt 1 | Read | |||
| BI | 620 | Low Suction Rfgt Pressure – Ckt 2 | Read | |||
| BI | 622 | Very Low Evaporator Rfgt Pressure - Ckt1 | Read | |||
| BI | 623 | Very Low Evaporator Rfgt Pressure - Ckt2 | Read | |||
| BI | 624 | Pumpdown Terminated - Ckt1 | Read | |||
| BI | 625 | Pumpdown Terminated - Ckt2 | Read | |||
| BI | 626 | Low Evaporator Water Temp (Unit Off) | Read | |||
| BI | 627 | Low Evaporator Temp (Unit Off) - Ckt1 | Read | |||
| BI | 628 | Low Evaporator Temp (Unit Off) - Ckt2 | Read | |||
| BI | 629 | Low Evap Leaving Water Temp: Unit On | Read | |||
| BI | 630 | Evaporator Water Flow Overdue | Read | |||
| BI | 631 | Evaporator Water Flow Lost | Read | |||
| BI | 632 | High Evaporator Refrigerant Pressure | Read | |||
| BI | 633 | High Evaporator Water Temperature | Read | |||
| BI | 634 | High Pressure Cutout - Cprsr 1A | Read | |||
| BI | 635 | High Pressure Cutout - Cprsr 1B | Read | |||
| BI | 636 | High Pressure Cutout - Cprsr 2A | Read | |||
| BI | 637 | High Pressure Cutout - Cprsr 2B | Read | |||
| BI | 638 | Emergency Stop | Read | |||
| BI | 639 | Outdoor Air Temperature Sensor | Read | |||
| BI | 640 | Starter Panel Thermostat Cutout - 2A | Read | |||
| BI | 641 | Starter Panel Thermostat Cutout - 1B | Read | |||
| BI | 642 | Starter Panel Thermostat Cutout - 2B | Read | |||
| BI | 643 | Starter Module Memory Error Type 1 - 1A | Read | |||
| BI | 644 | Starter Module Memory Error Type 1 - 1B | Read | |||
| BI | 645 | Starter Module Memory Error Type 1 - 2A | Read | |||
| BI | 646 | Starter Module Memory Error Type 1 - 2B | Read | |||
| BI | 647 | Starter Module Memory Error Type 2 - 1A | Read | |||
| BI | 648 | Starter Module Memory Error Type 2 - 1B | Read | |||
| BI | 649 | Starter Module Memory Error Type 2 - 2A | Read | |||
| BI | 650 | Starter Module Memory Error Type 2 - 2B | Read | |||
| BI | 651 | MP: Invalid Configuration | Read | |||
| BI | 652 | MP Application Memory CRC Error | Read | |||
| BI | 653 | MP: Non-Volatile Memory Reformatted | Read | |||
| BI | 654 | Check Clock | Read | |||
| BI | 655 | MP: Could not Store Starts and Hours | Read | |||
| BI | 656 | MP: Non-Volatile Block Test Error | Read | |||
| BI | 657 | Starter Failed to Arm/Start - 1A | Read | |||
| BI | 658 | Starter Failed to Arm/Start - 1B | Read | |||
| BI | 659 | Starter Failed to Arm/Start - 2A | Read | |||
| BI | 660 | Starter Failed to Arm/Start - 2B | Read | |||
| BI | 661 | Software Error 1001: Call Trane Service | Read | |||
| BI | 662 | Software Error 1002: Call Trane Service | Read | |||
| BI | 663 | Software Error 1003: Call Trane Service | Read | |||
| BI | 664 | Excessive IPC Comm Loss | Read | |||
| BI | 665 | Comm Loss: Slide Valve Unload - 1A | Read | |||
| BI | 666 | Comm Loss: Slide Valve Load - 1A | Read | |||
| BI | 667 | Comm Loss: Slide Valve Unload - 1B | Read | |||
| BI | 668 | Comm Loss: Slide Valve Load - 1B | Read | |||
| BI | 669 | Comm Loss: Slide Valve Unload - 2A | Read | |||
| BI | 670 | Comm Loss: Slide Valve Load - 2A | Read | |||
| BI | 671 | Comm Loss: Slide Valve Unload - 2B | Read | |||
| BI | 672 | Comm Loss: Slide Valve Load - 2B | Read | |||
| BI | 673 | Comm Loss: Step Load - 1A | Read | |||
| BI | 674 | Comm Loss: Step Load - 1B | Read | |||
| BI | 675 | Comm Loss: Step Load - 2A | Read | |||
| BI | 676 | Comm Loss: Step Load - 2B | Read | |||
| BI | 677 | Comm Loss: External Auto/Stop | Read | |||
| BI | 678 | Comm Loss: Emergency Stop | Read | |||
| BI | 679 | Comm Loss: External Ckt Lockout - Ckt1 | Read | |||
| BI | 680 | Comm Loss: External Ckt Lockout - Ckt2 | Read | |||
| BI | 681 | Comm Loss: External Ice Building Command | Read | |||
| BI | 682 | Comm Loss: Outdoor Air Temperature | Read | |||
| BI | 683 | Comm Loss: Evap Leaving Water Temp | Read | |||
| BI | 684 | Comm Loss: Evap Entering Water Temp | Read | |||
| BI | 685 | Comm Loss: Oil Temperature – 1A’ | Read | |||
| BI | 686 | Comm Loss: Oil Temperature – 1B’ | Read | |||
| BI | 687 | Comm Loss: Oil Temperature – 2A’ | Read | |||
| BI | 688 | Comm Loss: Oil Temperature – 2B’ | Read | |||
| BI | 689 | Comm Loss: Ext Chilled Water Setpoint | Read | |||
| BI | 690 | Comm Loss: Ext Current Limit Setpoint | Read | |||
| BI | 691 | Comm Loss: High Pressure Cutout Sw - 1A | Read | |||
| BI | 692 | Comm Loss: High Pressure Cutout Sw - 1B | Read | |||
| BI | 693 | Comm Loss: High Pressure Cutout Sw - 2A | Read | |||
| BI | 694 | Comm Loss: High Pressure Cutout Sw - 2B | Read | |||
| BI | 695 | Comm Loss: Evaporator Water Flow Switch | Read | |||
| BI | 696 | Comm Loss: Condenser Rfgt Pressure - Ckt1 | Read | |||
| BI | 697 | Comm Loss: Condenser Rfgt Pressure - Ckt2 | Read | |||
| BI | 698 | Comm Loss: Intermediate Oil Pressure - 1A | Read | |||
| BI | 699 | Comm Loss: Intermediate Oil Pressure - 1B | Read | |||
| BI | 700 | Comm Loss: Intermediate Oil Pressure - 2A | Read | |||
| BI | 701 | Comm Loss: Intermediate Oil Pressure - 2B | Read | |||
| BI | 702 | Comm Loss: Evaporator Water Pump Relay | Read | |||
| BI | 703 | Comm Loss: Ice Building Status Relay | Read | |||
| BI | 704 | Comm Loss: Suction Rfgt Pressure - 1A | Read | |||
| BI | 705 | Comm Loss: Suction Rfgt Pressure - 1B | Read | |||
| BI | 706 | Comm Loss: Suction Rfgt Pressure - 2A | Read | |||
| BI | 707 | Comm Loss: Suction Rfgt Pressure - 2B | Read | |||
| BI | 708 | Comm Loss: Fan Control Ckt1, Stage 1 | Read | |||
| BI | 709 | Comm Loss: Fan Control Ckt1, Stage 2 | Read | |||
| BI | 710 | Comm Loss: Fan Control Ckt1, Stage 3 | Read | |||
| BI | 711 | Comm Loss: Fan Control Ckt1, Stage 4 | Read | |||
| BI | 712 | Comm Loss: Fan Control Ckt2, Stage 1 | Read | |||
| BI | 713 | Comm Loss: Fan Control Ckt2, Stage 2 | Read | |||
| BI | 714 | Comm Loss: Fan Control Ckt2, Stage 3 | Read | |||
| BI | 715 | Comm Loss: Fan Control Ckt2, Stage 4 | Read | |||
| BI | 716 | Comm Loss: Evap Rfgt Liquid Level - Ckt1 | Read | |||
| BI | 717 | Comm Loss: Evap Rfgt Liquid Level - Ckt2 | Read | |||
| BI | 718 | Comm Loss: Fan Inverter Power- Ckt1 | Read | |||
| BI | 719 | Comm Loss: Fan Inverter Speed Cmd - Ckt1 | Read | |||
| BI | 720 | Comm Loss: Fan Inv Fault, Ckt1, Dr 1 | Read | |||
| BI | 721 | Comm Loss: Fan Inv Fault, Ckt1, Dr 2 | Read | |||
| BI | 722 | Comm Loss: Oil Return Solenoid Valve - 1A | Read | |||
| BI | 723 | Comm Loss: Oil Return Solenoid Valve - 2A | Read | |||
| BI | 724 | Comm Loss: Oil Return Solenoid Valve - 1B | Read | |||
| BI | 725 | Comm Loss: Oil Return Solenoid Valve - 2B | Read | |||
| BI | 726 | Comm Loss: Starter 1A | Read | |||
| BI | 727 | Comm Loss: Starter 1B | Read | |||
| BI | 728 | Comm Loss: Starter 2A | Read | |||
| BI | 729 | Comm Loss: Starter 2B | Read | |||
| BI | 730 | Comm Loss: Electronic Expansion Valve 1 | Read | |||
| BI | 731 | Comm Loss: Electronic Expansion Valve 2 | Read | |||
| BI | 734 | Comm Loss: Fan Inverter Power - Ckt2 | Read | |||
| BI | 735 | Comm Loss: Fan Inverter Speed Cmd - Ckt2 | Read | |||
| BI | 736 | Comm Loss: Fan Inv Fault, Ckt 2, Dr 1 | Read | |||
| BI | 737 | Comm Loss: Fan Inv Fault, Ckt 2, Dr 2 | Read | |||
| BI | 738 | Starter 1A Loss of Comm with MP | Read | |||
| BI | 739 | Starter 1B Loss of Comm with MP | Read | |||
| BI | 740 | Starter 2A Loss of Comm with MP | Read | |||
| BI | 741 | Starter 2B Loss of Comm with MP | Read | |||
| BI | 742 | Comm Loss: Local BAS Interface | Read | |||
| BI | 743 | Comm Loss: Programmable Relay Board 1 | Read | |||
| BI | 744 | Starter Panel Thermostat Comm Loss 2A | Read | |||
| BI | 745 | Starter Panel Thermostat Comm Loss 1B | Read | |||
| BI | 746 | Starter Panel Thermostat Comm Loss 2B | Read | |||
| BI | 747 | Comm Loss: Evap Rfgt Drain Valve - Ckt1 | Read | |||
| BI | 748 | Comm Loss: Evap Rfgt Drain Valve - Ckt2 | Read | |||
| BI | 749 | Comm Loss: AFD 1A | Read | |||
| BI | 750 | Comm Loss: AFD 2A | Read | |||
| BV | 2 | BAS Diagnostic Reset | Write | 0 = false (no reset), 1 = true (can reset) | ||
| MI | 1 | Chiller Running Status | Read | 1 = Chiller off, 2 = Chiller in start mode, 3 = Chiller in run mode, 4 = Chiller in pre-shutdown mode | ||
| MI | 2 | Operating Mode | Read | 1 = Cool, 3 = Ice | ||
| MI | 4 | Refrigerant Type | Read | 5 = R134a, 15 = R514A | ||
| MI | 5 | Model Information | Read | 1 = RTA | ||
| MI | 6 | Cooling Type | Read | 2 = Air cooled | ||
| MI | 7 | Manufacturing Location | Read | 1 = Field Applied, 3 = Pueblo, 4 = Charmes, 14 = Curitiba, 15 = Taicang, 17 = Epinal, 18 = Golbey | ||
| MVmin | 1 | BAS Chiller Auto Stop Command | Write | 1 = Stop, 2 = Auto | ||
| MVmin | 2 | BAS Chiller Mode Command | Write | 1 = Cool, 3 = Ice |
No points match these filters.
Object ID lookup: Trane Symbio 800 RTAC (UC800) point IDs by name
AI1Active Chilled Water SetpointAI2Active Current Limit SetpointAI5Actual Running CapacityAI6Evaporator Refrigerant Pressure - Ckt1AI9Evaporator Refrigerant Pressure - Ckt 2AI12Evaporator Saturated Refrigerant Temperature- Ckt 1AI14Evaporator Saturated Refrigerant Temperature- Ckt 2AI16Condenser Refrigerant Pressure - Ckt 1AI18Condenser Refrigerant Pressure - Ckt 2AI20Condenser Saturated Refrigerant Temperature - Ckt 1AI22Condenser Saturated Refrigerant Temperature - Ckt 2AI25Local Atmospheric PressureAI26Starts- Compressor 1AAI27Starts- Compressor 1BAI28Starts- Compressor 2AAI29Starts- Compressor 2BAI34Run Time- Compressor 1AAI35Run Time- Compressor 1BAI36Run Time- Compressor 2AAI37Run Time- Compressor 2BAI42Airflow Percentage- Circuit 1AI43Airflow Percentage- Circuit 2AI44Evaporator Entering Water TempAI45Evaporator Leaving Water TempAI48High Side Oil Pressure - Compressor 1AAI49High Side Oil Pressure - Compressor 1BAI50High Side Oil Pressure - Compressor 2AAI51High Side Oil Pressure - Compressor 2BAI52Oil Temp - Compressor 1AAI53Oil Temp - Compressor 1BAI54Oil Temp - Compressor 2AAI55Oil Temp - Compressor 2BAI57Outdoor Air TemperatureAI59Motor Voltage AB Starter 1AAI60Motor Voltage AB Starter 1BAI61Motor Voltage AB Starter 2AAI71Motor Current L1 Starter 1AAI72Motor Current L2 Starter 1AAI73Motor Current L3 Starter 1AAI74Motor Current L1 Starter 1BAI75Motor Current L2 Starter 1BAI76Motor Current L3 Starter 1BAI77Motor Current L1 Starter 2AAI78Motor Current L2 Starter 2AAI79Motor Current L3 Starter 2AAI80Motor Current L1 Starter 2BAI81Motor Current L2 Starter 2BAI82Motor Current L3 Starter 2BAI83Motor Current L1 % RLA Starter 1AAI84Motor Current L2 % RLA Starter 1AAI85Motor Current L3 % RLA Starter 1AAI86Motor Current L1 % RLA Starter 1BAI87Motor Current L2 % RLA Starter 1BAI88Motor Current L3 % RLA Starter 1BAI89Motor Current L1 % RLA Starter 2AAI90Motor Current L2 % RLA Starter 2AAI91Motor Current L3 % RLA Starter 2AAI92Motor Current L1 % RLA Starter 2BAI93Motor Current L2 % RLA Starter 2BAI94Motor Current L3 % RLA Starter 2BAI95Number of CircuitsAI96Number of Compressors, Ckt 1AI97Number of Compressors, Ckt 2AI98Chiller Design CapacityAI100Output Power AFD 1AAI101Output Power AFD 2AAI102Discharge Temperature Cprsr 1AAI103Discharge Temperature Cprsr 2AAI106Frequency Command Cprsr 1AAI107Frequency Command Cprsr 2AAI108Average Motor Current % RLA AFD 1AAI109Average Motor Current % RLA AFD 2AAV1BAS Chilled Water SetpointAV2BAS Current Limit SetpointBI1Run EnabledBI2Local Setpoint ControlBI3Chiller Limit Mode IndicatorBI4Chiller Running IndicatorBI6Maximum CapacityBI9Compressor 1A RunningBI10Compressor 1B RunningBI11Compressor 2A RunningBI12Compressor 2B RunningBI17Evaporator Water Pump CommandBI22Evaporator Water Flow StatusBI23Alarm PresentBI24Shutdown Alarm PresentBI500AFD Fault – 1ABI502AFD Fault–2ABI504AFD Motor Current Overload – 1ABI506AFD Motor Current Overload – 2ABI508AFD Interrupt Failure – 1ABI510AFD Interrupt Failure – 2ABI512Starter Did Not Transition - 1ABI513Starter Did Not Transition - 1BBI514Starter Did Not Transition - 2ABI515Starter Did Not Transition - 2BBI516Phase Reversal - 1ABI517Phase Reversal - 1BBI518Phase Reversal - 2ABI519Phase Reversal - 2BBI520Starter Dry Run Test - 1ABI521Starter Dry Run Test- 1BBI522Starter Dry Run Test - 2ABI523Starter Dry Run Test - 2BBI524Phase Loss - 1ABI525Phase Loss - 1BBI526Phase Loss-2ABI527Phase Loss-2BBI528Power Loss - 1ABI529Power Loss - 1BBI530Power Loss - 2ABI531Power Loss - 2BBI532Severe CurrentPhase UnbalanceImbalance - Cprsr 1ABI533Severe CurrentPhase UnbalanceImbalance - Cprsr 1BBI534Severe CurrentPhase UnbalanceImbalance - Cprsr 2ABI535Severe CurrentPhase UnbalanceImbalance - Cprsr 2BBI536Starter Fault Type I – 1ABI537Starter Fault Type I – 1BBI538Starter Fault Type I – 2ABI539Starter Fault Type I –2BBI540Starter Fault Type II – 1ABI541Starter Fault Type II –1BBI542Starter Fault Type II –2ABI543Starter Fault Type II – 2BBI544Starter Fault Type III – 1ABI545Starter Fault Type III –1BBI546Starter Fault Type III –2ABI547Starter Fault Type III –2BBI548Transition Complete Input Shorted –1ABI549Transition Complete Input Shorted –1BBI550Transition Complete Input Shorted –2ABI551Transition Complete Input Shorted –2BBI552Transition Complete Input Opened –1ABI553Transition Complete Input Opened –1BBI554Transition Complete Input Opened –2ABI555Transition Complete Input Opened –2BBI556Motor Current Overload Trip - Cprsr 1ABI557Motor Current Overload Trip - Cprsr 1BBI558Motor Current Overload Trip - Cprsr 2ABI559Motor Current Overload Trip - Cprsr 2BBI560Starter Contactor Interrupt Failure - 1ABI561Starter Contactor Interrupt Failure - 1BBI562Starter Contactor Interrupt Failure - 2ABI563Starter Contactor Interrupt Failure - 2BBI564Over VoltageBI565Under VoltageBI566MP: Reset Has OccurredBI567Low Evaporator Rfgt Temperature - Ckt1BI568Low Evaporator Rfgt Temperature - Ckt2BI569Low Oil Flow - Cprsr 1ABI570Low Oil Flow - Cprsr 1BBI571Low Oil Flow- Cprsr 2ABI572Low Oil Flow - Cprsr 2BBI573Low Differential Rfgt Pressure - Ckt1BI574Low Differential Rfgt Pressure - Ckt2BI575High Differential Rfgt Pressure - Ckt1BI576High Differential Rfgt Pressure - Ckt2BI577High Oil Temperature – 1ABI578High Oil Temperature –1BBI579High Oil Temperature –2ABI580High Oil Temperature – 2BBI581Oil Temperature Sensor – 1ABI582Oil Temperature Sensor – 1BBI583Oil Temperature Sensor–2ABI584Oil Temperature Sensor–2BBI585Evaporator Liquid Level Sensor– Ckt1BI586Evaporator Liquid Level Sensor– Ckt2BI587Condenser Fan VFD Fault - Ckt 1 Dr 1BI588Condenser Fan VFD Fault - Ckt1 Dr 2BI589Condenser Fan VFD Fault - Ckt2 Dr 1BI590Condenser Fan VFD Fault - Ckt2 Dr 2BI593Low Evaporator Liquid Level – Ckt1BI594Low Evaporator Liquid Level – Ckt2BI595High Evaporator Liquid Level – Ckt1BI596High Evaporator Liquid Level – Ckt2BI597Evaporator Rfgt Drain – Circuit 1BI598Evaporator Rfgt Drain – Circuit 2BI599External Chilled Water SetpointBI600External Current Limit SetpointBI601Evap Water Flow (Entering Water Temp)BI602Evaporator Entering Water Temp SensorBI603Evaporator Leaving Water Temp SensorBI604Condenser Rfgt Pressure Transducer - Ckt1BI605Condenser Rfgt Pressure Transducer - Ckt2BI606Suction Refrigerant Pressure Sensor- 1ABI607Suction Refrigerant Pressure Sensor - 1BBI608Suction Refrigerant Pressure Sensor - 2ABI609Suction Refrigerant Pressure Sensor - 2BBI610Intermediate Oil Press Xdcr - Cprsr 1ABI611Intermediate Oil Press Xdcr - Cprsr 1BBI612Intermediate Oil Press Xdcr - Cprsr 2ABI613Intermediate Oil Press Xdcr - Cprsr 2BBI614Oil Flow Protection Fault - 1ABI615Oil Flow Protection Fault - 1BBI616Oil Flow Protection Fault - 2ABI617Oil Flow Protection Fault - 2BBI618Low Suction Rfgt Pressure – Ckt 1BI620Low Suction Rfgt Pressure – Ckt 2BI622Very Low Evaporator Rfgt Pressure - Ckt1BI623Very Low Evaporator Rfgt Pressure - Ckt2BI624Pumpdown Terminated - Ckt1BI625Pumpdown Terminated - Ckt2BI626Low Evaporator Water Temp (Unit Off)BI627Low Evaporator Temp (Unit Off) - Ckt1BI628Low Evaporator Temp (Unit Off) - Ckt2BI629Low Evap Leaving Water Temp: Unit OnBI630Evaporator Water Flow OverdueBI631Evaporator Water Flow LostBI632High Evaporator Refrigerant PressureBI633High Evaporator Water TemperatureBI634High Pressure Cutout - Cprsr 1ABI635High Pressure Cutout - Cprsr 1BBI636High Pressure Cutout - Cprsr 2ABI637High Pressure Cutout - Cprsr 2BBI638Emergency StopBI639Outdoor Air Temperature SensorBI640Starter Panel Thermostat Cutout - 2ABI641Starter Panel Thermostat Cutout - 1BBI642Starter Panel Thermostat Cutout - 2BBI643Starter Module Memory Error Type 1 - 1ABI644Starter Module Memory Error Type 1 - 1BBI645Starter Module Memory Error Type 1 - 2ABI646Starter Module Memory Error Type 1 - 2BBI647Starter Module Memory Error Type 2 - 1ABI648Starter Module Memory Error Type 2 - 1BBI649Starter Module Memory Error Type 2 - 2ABI650Starter Module Memory Error Type 2 - 2BBI651MP: Invalid ConfigurationBI652MP Application Memory CRC ErrorBI653MP: Non-Volatile Memory ReformattedBI654Check ClockBI655MP: Could not Store Starts and HoursBI656MP: Non-Volatile Block Test ErrorBI657Starter Failed to Arm/Start - 1ABI658Starter Failed to Arm/Start - 1BBI659Starter Failed to Arm/Start - 2ABI660Starter Failed to Arm/Start - 2BBI661Software Error 1001: Call Trane ServiceBI662Software Error 1002: Call Trane ServiceBI663Software Error 1003: Call Trane ServiceBI664Excessive IPC Comm LossBI665Comm Loss: Slide Valve Unload - 1ABI666Comm Loss: Slide Valve Load - 1ABI667Comm Loss: Slide Valve Unload - 1BBI668Comm Loss: Slide Valve Load - 1BBI669Comm Loss: Slide Valve Unload - 2ABI670Comm Loss: Slide Valve Load - 2ABI671Comm Loss: Slide Valve Unload - 2BBI672Comm Loss: Slide Valve Load - 2BBI673Comm Loss: Step Load - 1ABI674Comm Loss: Step Load - 1BBI675Comm Loss: Step Load - 2ABI676Comm Loss: Step Load - 2BBI677Comm Loss: External Auto/StopBI678Comm Loss: Emergency StopBI679Comm Loss: External Ckt Lockout - Ckt1BI680Comm Loss: External Ckt Lockout - Ckt2BI681Comm Loss: External Ice Building CommandBI682Comm Loss: Outdoor Air TemperatureBI683Comm Loss: Evap Leaving Water TempBI684Comm Loss: Evap Entering Water TempBI685Comm Loss: Oil Temperature – 1A’BI686Comm Loss: Oil Temperature – 1B’BI687Comm Loss: Oil Temperature – 2A’BI688Comm Loss: Oil Temperature – 2B’BI689Comm Loss: Ext Chilled Water SetpointBI690Comm Loss: Ext Current Limit SetpointBI691Comm Loss: High Pressure Cutout Sw - 1ABI692Comm Loss: High Pressure Cutout Sw - 1BBI693Comm Loss: High Pressure Cutout Sw - 2ABI694Comm Loss: High Pressure Cutout Sw - 2BBI695Comm Loss: Evaporator Water Flow SwitchBI696Comm Loss: Condenser Rfgt Pressure - Ckt1BI697Comm Loss: Condenser Rfgt Pressure - Ckt2BI698Comm Loss: Intermediate Oil Pressure - 1ABI699Comm Loss: Intermediate Oil Pressure - 1BBI700Comm Loss: Intermediate Oil Pressure - 2ABI701Comm Loss: Intermediate Oil Pressure - 2BBI702Comm Loss: Evaporator Water Pump RelayBI703Comm Loss: Ice Building Status RelayBI704Comm Loss: Suction Rfgt Pressure - 1ABI705Comm Loss: Suction Rfgt Pressure - 1BBI706Comm Loss: Suction Rfgt Pressure - 2ABI707Comm Loss: Suction Rfgt Pressure - 2BBI708Comm Loss: Fan Control Ckt1, Stage 1BI709Comm Loss: Fan Control Ckt1, Stage 2BI710Comm Loss: Fan Control Ckt1, Stage 3BI711Comm Loss: Fan Control Ckt1, Stage 4BI712Comm Loss: Fan Control Ckt2, Stage 1BI713Comm Loss: Fan Control Ckt2, Stage 2BI714Comm Loss: Fan Control Ckt2, Stage 3BI715Comm Loss: Fan Control Ckt2, Stage 4BI716Comm Loss: Evap Rfgt Liquid Level - Ckt1BI717Comm Loss: Evap Rfgt Liquid Level - Ckt2BI718Comm Loss: Fan Inverter Power- Ckt1BI719Comm Loss: Fan Inverter Speed Cmd - Ckt1BI720Comm Loss: Fan Inv Fault, Ckt1, Dr 1BI721Comm Loss: Fan Inv Fault, Ckt1, Dr 2BI722Comm Loss: Oil Return Solenoid Valve - 1ABI723Comm Loss: Oil Return Solenoid Valve - 2ABI724Comm Loss: Oil Return Solenoid Valve - 1BBI725Comm Loss: Oil Return Solenoid Valve - 2BBI726Comm Loss: Starter 1ABI727Comm Loss: Starter 1BBI728Comm Loss: Starter 2ABI729Comm Loss: Starter 2BBI730Comm Loss: Electronic Expansion Valve 1BI731Comm Loss: Electronic Expansion Valve 2BI734Comm Loss: Fan Inverter Power - Ckt2BI735Comm Loss: Fan Inverter Speed Cmd - Ckt2BI736Comm Loss: Fan Inv Fault, Ckt 2, Dr 1BI737Comm Loss: Fan Inv Fault, Ckt 2, Dr 2BI738Starter 1A Loss of Comm with MPBI739Starter 1B Loss of Comm with MPBI740Starter 2A Loss of Comm with MPBI741Starter 2B Loss of Comm with MPBI742Comm Loss: Local BAS InterfaceBI743Comm Loss: Programmable Relay Board 1BI744Starter Panel Thermostat Comm Loss 2ABI745Starter Panel Thermostat Comm Loss 1BBI746Starter Panel Thermostat Comm Loss 2BBI747Comm Loss: Evap Rfgt Drain Valve - Ckt1BI748Comm Loss: Evap Rfgt Drain Valve - Ckt2BI749Comm Loss: AFD 1ABI750Comm Loss: AFD 2ABV2BAS Diagnostic ResetMI1Chiller Running StatusMI2Operating ModeMI4Refrigerant TypeMI5Model InformationMI6Cooling TypeMI7Manufacturing LocationMV1BAS Chiller Auto Stop CommandMV2BAS Chiller Mode Command
Integration notes
- Only the points that apply to the unit's factory configuration show up; the doc lists every possible point.
- The tables have no read/write column: AI/BI/MI are read-only, and the AV/BV/MV objects (listed with a relinquish default and valid range) are the BAS setpoints and commands, marked writable here.
- The analog tables give only the data type (Real) instead of engineering units, so units are blank here.
- BI 500 and up are diagnostic flags, one per alarm condition; the document lists their names only, with no state text.
- The Symbio 800 integration guide (BAS-SVP083) covers BACnet IP and BACnet MS/TP; the rotary address sets the MS/TP MAC and a default Device ID of 1-127, and a software Device ID can be set instead.
- Trane titles this list 'RTAC (UC800)' and does not explain the suffix in the document. Its objects use short instance numbers (AI 1, BI 4...) instead of the 5-digit numbering in the standard Symbio 800 RTAC list (BAS-PTS023), so check which list matches the controller on site.
- The same document also has a Modbus register map; only the BACnet side is listed here.
Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the Symbio 800 RTAC (UC800) and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.
Questions about the Trane Symbio 800 RTAC (UC800)
How many BACnet points does the Trane Symbio 800 RTAC (UC800) have?
This list has 335 BACnet objects: 72 analog inputs, 2 analog values, 252 binary inputs, 1 binary value, 6 multi-state inputs, 2 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Trane Symbio 800 RTAC (UC800) BACnet points are writable?
5 of the 335 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done. The source has no read/write column, so this is inferred from object type.
Where is the official Trane Symbio 800 RTAC (UC800) BACnet documentation?
The source is Symbio 800 Integration Points List BACnet - RTAC (UC800) (BAS-PTS032A-EN), revision 12/6/2024, published free by Trane at https://elibrary.tranetechnologies.com/public/commercial-hvac/Literature/Points%20List/BAS-PTS032A-EN_12062024.pdf.
What are the minimum BACnet points to integrate the Trane Symbio 800 RTAC (UC800)?
Start with MV 1 BAS Chiller Auto Stop Command (BMS auto/stop command (1 = Stop, 2 = Auto)); MV 2 BAS Chiller Mode Command (Cool/ice mode command); AV 1 BAS Chilled Water Setpoint (Chilled water setpoint from the BMS); AV 2 BAS Current Limit Setpoint (Current limit from the BMS, % RLA); BI 4 Chiller Running Indicator (Chiller on/off status); BI 2 Local Setpoint Control (Shows if local setpoints override BAS setpoints); AI 45 Evaporator Leaving Water Temp (Leaving chilled water temperature); AI 5 Actual Running Capacity (Actual running capacity in percent); BI 23 Alarm Present (Any active alarm on the chiller).
How do I enable BMS control of the Trane Symbio 800 RTAC (UC800)?
MV 1 BAS Chiller Auto Stop Command (1 = Stop, 2 = Auto; relinquish default Auto) is the BMS auto/stop. BI 1 Run Enabled shows stop/auto. The document doesn't say how to hand setpoint control to the BAS; BI 2 Local Setpoint Control shows when the chiller is using local setpoints instead of BAS setpoints.
Does the Trane Symbio 800 RTAC (UC800) need a BACnet heartbeat or have a communication timeout?
No timeout or heartbeat is described. BI 742 'Comm Loss: Local BAS Interface' is a diagnostic flag; the document doesn't say what the chiller does when it is set.
How do I check these points on the real Symbio 800 RTAC (UC800)?
Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.
More Trane BACnet points lists
- Water-cooled scroll chiller BACnet interface
Trane BCI2-C for CGWN / CCUN chillers (CH530)
Trane CGWN water-cooled and CCUN condenserless scroll chillers with CH530 controls, as listed in the BCI2-C integration guide.
Also known as: BCI2-C, BCI2C, BACnet Communication Interface for Chillers, CGWN, CCUN, CGWN water-cooled scroll chiller, CCUN condenserless chiller, BAS-SVP055 - Water-cooled screw chiller BACnet interface
Trane BCI2-C for RTWD / RTUD chillers (CH530)
Trane Series R RTWD water-cooled and RTUD condenserless helical-rotary chillers with CH530 controls fitted with the BCI2-C BACnet interface.
Also known as: BCI2-C, BCI2C, BACnet Communication Interface for Chillers, RTWD, RTUD, Series R RTWD, RTWD CH530, BAS-SVP055 - Rooftop unit communication interface (IntelliPak)
Trane BCI2-I (IntelliPak)
Trane IntelliPak I and II rooftop units, IntelliPak air handlers and Commercial Self-Contained (CSC) units fitted with the BCI2-I BACnet card.
Also known as: BCI2-I, BCI2I, IntelliPak BACnet interface, BACnet Communication Interface for IntelliPak, BAS-SVP054, IntelliPak I, IntelliPak II, Commercial Self-Contained, Signature Series - Rooftop unit communication interface (ReliaTel)
Trane BCI2-R (ReliaTel)
Trane packaged rooftop units with ReliaTel controls (Voyager, Precedent, Odyssey) fitted with the BCI2-R BACnet card.
Also known as: BCI2-R, BCI2R, ReliaTel BACnet interface, BACnet Communication Interface for ReliaTel, BAS-SVP053, Voyager, Precedent, Odyssey - DOAS / outdoor air unit controller
Trane Horizon Outdoor Air Unit, Tracer UC600 program V12
Trane Horizon outdoor air units (cabinets OAB, OAD, OAG, OAK, OAN) with the Tracer UC600 controller running Horizon program version 12.
Also known as: Horizon OAU, Horizon DOAS, OAU-SVP002A, Tracer UC600 Horizon, OAB, OAD, OAG, OAK, OAN - Rooftop unit controller (zone sensor interaction subset)
Trane ReliaTel BCI-R - touch-screen zone sensor points
Trane Precedent, Voyager 2/3 and Odyssey single-zone units on ReliaTel controls with a BCI-R board, used with the commercial touch-screen programmable zone sensor.
Also known as: ReliaTel, BCI-R, RTRM, X13790994001, BAYSENS924, BAS-SVP080A - VAV box controller
Trane Symbio 210 VAV
Trane VAV terminal units with the Symbio 210 programmable controller running the factory VAV programs (space temperature, ventilation flow and flow tracking control).
Also known as: Symbio 210, Symbio210, Symbio 210 VAV controller, BAS-SVP043 - Fan coil, blower coil and unit ventilator controller
Trane Symbio 400-B/500 Fan Coil, Blower Coil and Unit Ventilator
Trane fan coils, blower coils and unit ventilators controlled by a Symbio 400-B or Symbio 500 programmable controller.
Also known as: Symbio 400-B, Symbio 400B, Symbio 500, Symbio fan coil, Symbio blower coil, Symbio unit ventilator, BAS-SVP060A-EN - Water-source heat pump controller
Trane Symbio 400-B/500 Water-Source Heat Pump
Trane water-source heat pumps controlled by a Symbio 400-B or Symbio 500 programmable controller.
Also known as: Symbio 400-B, Symbio 400B, Symbio 500, Symbio WSHP, BAS-SVP061B-EN - Self-contained unit controller
Trane Symbio 500 Commercial Self-Contained (SWUD)
Trane commercial self-contained (SWUD) units controlled by a Symbio 500.
Also known as: Symbio 500, SWUD, Commercial Self-Contained, CSC, BAS-PTS038 - Self-contained unit controller
Trane Symbio 500 Modular Self-Contained (SCWM)
Trane modular self-contained (SCWM) units controlled by a Symbio 500.
Also known as: Symbio 500, SCWM, Modular Self-Contained, BAS-PTS037 - Split system controller
Trane Symbio 700 Odyssey
Trane Odyssey split systems controlled by a Symbio 700.
Also known as: Symbio 700, Odyssey split system, BAS-PTS005 - Rooftop unit controller
Trane Symbio 700 Precedent / Axiom
Trane Precedent packaged rooftop units and Axiom rooftop water-source heat pumps with the Symbio 700 controller.
Also known as: Symbio 700, Symbio700, Precedent rooftop, Axiom rooftop WSHP, BAS-PTS001 - Rooftop unit controller
Trane Symbio 700 Voyager 3
Trane Voyager 3 packaged rooftop air conditioners with the Symbio 700 controller.
Also known as: Voyager 3, Voyager III, Symbio 700, Symbio700, BAS-SVP066 - Rooftop unit controller (zone sensor interaction subset)
Trane Symbio 800 (SCC IntelliPak) / Symbio 700 - touch-screen zone sensor points
Trane single-zone equipment on Symbio 700 and IntelliPak units on Symbio 800 (SCC), used with the commercial touch-screen programmable zone sensor.
Also known as: Symbio 700, Symbio 800, SCC IPak, IntelliPak, X13791009001, BAYSENS800, BAS-SVP080A - Air-cooled chiller controller
Trane Symbio 800 ACRB Small (UC800)
Trane ACRB Small air-cooled chillers whose Symbio 800 points list Trane tags '(UC800)'.
Also known as: ACRB, ACRB Small, ACRB UC800, Symbio 800 ACRB, BAS-PTS025 - Air-cooled chiller controller
Trane Symbio 800 ACSA (UC800)
Trane ACSA air-cooled chillers whose Symbio 800 points list Trane tags '(UC800)'.
Also known as: ACSA, ACSA UC800, Symbio 800 ACSA, BAS-PTS026 - Water-cooled centrifugal chiller controller
Trane Symbio 800 Agility (HDWA / HDDA)
Trane Agility water-cooled centrifugal chillers (model HDWA and HDDA per the model information point) with Symbio 800 controls.
Also known as: Agility, HDWA, HDDA, Agility water-cooled chiller, Symbio 800 Agility, BAS-PTS007 - Air-cooled chiller controller
Trane Symbio 800 Ascend ACR Series C
Trane Ascend model ACR Series C air-cooled chillers with Symbio 800 controls.
Also known as: Ascend ACR, ACR Series C, Ascend air-cooled chiller, Symbio 800 Ascend ACR, BAS-PTS021 - Air-cooled chiller controller
Trane Symbio 800 Ascend ACS / ACX
Trane Ascend model ACS and ACX air-cooled scroll chillers with Symbio 800 controls.
Also known as: Ascend ACS, Ascend ACX, Ascend air-cooled chiller, Symbio 800 Ascend, BAS-PTS011 - Centrifugal chiller controller
Trane Symbio 800 CenTraVac (Duplex)
Two-compressor (duplex) Trane CenTraVac water-cooled centrifugal chillers with Symbio 800 controls.
Also known as: CenTraVac Duplex, CDHH, CDHF, Symbio 800 CenTraVac, BAS-PTS009 - Centrifugal chiller controller
Trane Symbio 800 CenTraVac (Simplex)
Single-compressor (simplex) Trane CenTraVac water-cooled centrifugal chillers with Symbio 800 controls.
Also known as: CenTraVac, CVHE, CVHF, CVHH, Symbio 800 CenTraVac, BAS-PTS009 - Centrifugal chiller controller
Trane Symbio 800 CenTraVac Simplex (UC800)
Trane CenTraVac (CTV) simplex centrifugal chillers whose Symbio 800 points list Trane tags '(UC800)'.
Also known as: CenTraVac, CTV, CTV-Simplex, CenTraVac UC800, Symbio 800 CenTraVac, BAS-PTS029 - Air-cooled scroll chiller controller
Trane Symbio 800 CGAM
Trane CGAM air-cooled scroll chillers with Symbio 800 controls.
Also known as: CGAM, CGAM air-cooled chiller, Symbio 800 CGAM, BAS-PTS019 - Air-cooled scroll chiller controller
Trane Symbio 800 CGAM (CH530)
Trane CGAM air-cooled scroll chillers whose Symbio 800 points list Trane tags '(CH530)'.
Also known as: CGAM, CGAM CH530, CH530 CGAM, Symbio 800 CGAM, BAS-PTS027 - Water-cooled centrifugal chiller controller
Trane Symbio 800 HDWA (UC800)
Trane HDWA water-cooled chillers whose Symbio 800 points list Trane tags '(UC800)'.
Also known as: HDWA, Agility HDWA, HDWA UC800, Symbio 800 HDWA, BAS-PTS028 - Split system controller
Trane Symbio 800 IntelliCore Split System (RAUK)
Trane IntelliCore split systems (RAUK) controlled by a Symbio 800.
Also known as: IntelliCore, RAUK, IntelliCore split system, Symbio 800, BAS-PTS036 - Rooftop unit / air handler controller
Trane Symbio 800 IntelliPak
Trane IntelliPak large packaged rooftop units running the Symbio 800 controller.
Also known as: Symbio 800, IntelliPak rooftop, IntelliPak with Symbio 800, BAS-PTS003 - Air-cooled screw chiller controller
Trane Symbio 800 RTAC
Trane RTAC air-cooled helical-rotary chillers with Symbio 800 controls.
Also known as: RTAC, Series R RTAC, RTAC air-cooled chiller, BAS-PTS023 - Air-cooled screw chiller controller
Trane Symbio 800 RTAC (CH530)
Trane RTAC air-cooled helical-rotary chillers covered by Trane's 'RTAC (CH530)' Symbio 800 points list.
Also known as: RTAC, Series R RTAC, RTAC CH530, CH530, BAS-PTS031 - Water-cooled screw chiller controller
Trane Symbio 800 RTHD (CH530)
Trane RTHD water-cooled helical-rotary chillers covered by Trane's 'RTHD (CH530)' Symbio 800 points list.
Also known as: RTHD, Series R RTHD, RTHD CH530, CH530, BAS-PTS033 - Water-cooled screw chiller controller
Trane Symbio 800 RTHD (UC800)
Trane RTHD water-cooled helical-rotary chillers covered by Trane's 'RTHD (UC800)' Symbio 800 points list.
Also known as: RTHD, Series R RTHD, RTHD UC800, UC800, BAS-PTS034 - Water-cooled screw chiller controller
Trane Symbio 800 RTWD (CH530)
Trane RTWD water-cooled helical-rotary chillers covered by Trane's 'RTWD (CH530)' Symbio 800 points list.
Also known as: RTWD, Series R RTWD, RTWD CH530, CH530, BAS-PTS035 - Water-cooled screw chiller controller
Trane Symbio 800 Series R RTHD
Trane Series R model RTHD water-cooled helical-rotary chillers with Symbio 800 controls.
Also known as: RTHD, Series R RTHD, RTHD water-cooled chiller, Symbio 800 RTHD, BAS-PTS015 - Water-cooled screw chiller controller
Trane Symbio 800 Series R RTWD
Trane Series R model RTWD water-cooled helical-rotary chillers with Symbio 800 controls.
Also known as: RTWD, Series R RTWD, Series R water-cooled chiller, BAS-PTS017 - Air-cooled screw chiller controller
Trane Symbio 800 Sintesis RTAF
Trane Sintesis model RTAF air-cooled helical-rotary chillers with Symbio 800 controls.
Also known as: Sintesis RTAF, RTAF, Sintesis air-cooled chiller, Symbio 800 Sintesis, BAS-PTS013 - Dedicated outdoor air unit (DOAS) controller
Trane Tracer UC600 Packaged Outdoor Air Unit
Trane packaged outdoor air units controlled by a Tracer UC600 running the packaged outdoor air unit program.
Also known as: Tracer UC600, UC600 DOAS, Packaged Outdoor Air Unit, BAS-SVP18 - Heat pump / fan coil controller (zone sensor interaction subset)
Trane UC400-B / Symbio 500 (FC, BC, UV, staged WSHP) - touch-screen zone sensor points
Factory-programmed Trane fan coils, blower coils, unit ventilators and staged water-source heat pumps on Tracer UC400-B or Symbio 400-B/500, used with the touch-screen programmable zone sensor.
Also known as: UC400-B, Symbio 500, Symbio 400-B, X13790993001, SEN02587, X13790992001, BAS-SVP080A - Heat pump / fan coil controller (zone sensor interaction subset)
Trane UC400-B / Symbio 500 VS-WSHP - touch-screen zone sensor points
Factory-programmed Trane variable-speed water-source heat pumps on Tracer UC400-B or Symbio 400-B/500, used with the touch-screen programmable zone sensor.
Also known as: UC400-B VS-WSHP, Symbio 500 VS-WSHP, variable speed WSHP, X13790993001, SEN02587, BAS-SVP080A
Source: Symbio 800 Integration Points List BACnet - RTAC (UC800) · BAS-PTS032A-EN · rev. 12/6/2024. Object names, instances and units are reproduced as published; descriptions are our own.