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Variable frequency drive (HVAC) · BACnet points list
Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) BACnet points list
Updated 28 October 2026
The Z1000 has BACnet MS/TP built into its RS-485 terminals; set H5-08 = 3 to select it. The fixed object list covers analog and digital I/O, run/fault/reset commands, the frequency and PI setpoint references, output monitors and a long set of fault and status flags. AV29/AV30 give indirect access to any drive parameter by Modbus register number.
This page lists 107 BACnet objects for the Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) — 32 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Yaskawa’s own free documentation, linked below.
- Manufacturer
- Yaskawa
- Model
- Z1000 HVAC drive (embedded BACnet MS/TP)
- Equipment
- Variable frequency drive (HVAC)
- Equipment type
- VFDs & pumps
- BACnet objects
- 107 (32 writable)
- Transport
- BACnet MS/TP
- Firmware
- PICS lists application software 1.3, firmware VSE90101X
- Default device instance
- 1
- Also known as
- Z1000, CIMR-ZU, CIMR-ZUA, Z1000 AC Drive for HVAC Fan and Pump, SIEP C710616 45
BMS integration notes: Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP)
Set H5-08 = 3 (BACnet), the MS/TP address in H5-01, the baud rate in H5-02 and the device instance in H5-14/H5-15, then cycle power. Set b1-01 = 2 and b1-02 = 2 so the network supplies the frequency reference and run command. Write BV1 RUN FWD and AV2 Frequency Command, read BV13/BV16 and AV10/AV12/AV13, and reset faults with BV4.
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 |
|---|---|---|---|
| BV 1 | RUN FWD | Start/stop from the BMS (drive) | Command |
| AV 2 | Frequency Command | Frequency reference, units per o1-03 | Command |
| BV 4 | FAULT RESET | Reset a tripped drive | Command |
| BV 13 | RUN-STOP | Running status | Read |
| BV 15 | READY | Drive ready to run | Read |
| AV 10 | Output Frequency | Output frequency, units per o1-03 | Read |
| AV 12 | Output Current | Motor amps | Read |
| AV 13 | Output Power | Drive power in kW | Read |
| BV 16 | FAULT | Any active drive fault | Read |
| AV 7 | Fault Details (Bitmapped) | Bit-coded active fault flags | Read |
Enable & remote start
Table B.1: set b1-01 Frequency Reference Selection 1 = 2 and b1-02 Run Command Selection 1 = 2 (serial communication); b1-15/b1-16 = 2 do the same for External Reference 2. With H5-12 = 0 (default) BV1 runs forward and BV2 runs reverse; with H5-12 = 1 bit 0 is run/stop and bit 1 sets direction. Monitoring, parameter access, fault set/reset and the multi-function inputs work at any time, whatever b1-01/b1-02 are set to.
Heartbeat & communication loss
H5-05 = 1 (default) turns on CE detection: if the drive gets no data from the master for H5-09 (0.0-10.0 s, default 2.0 s) it raises a CE fault and acts per H5-04 (0 ramp to stop, 1 coast, 2 fast stop, 3 alarm only and keep running (default), 4 run at d1-04).
Sensors & values from the BMS
AV3 PI Setpoint lets the BMS write the PI setpoint; BO4 Ref Sel: PI Setpoint (or AV5 bit 1) selects it. The object list has no writable PI feedback.
Network setup
- H5-08 = 3 selects BACnet; H5-01 is the MS/TP address (0-FFH, default 1FH) and must be unique.
- H5-02 sets the baud rate, 1200 to 76800 bps (BACnet default is setting 3 = 9600 bps); 115200 bps gives an oPE29 error.
- H5-03 sets parity (default none); data is 8 bits with 1 stop bit.
- Device instance = H5-14 (low word) + H5-15 (high word), in hex; default 1. Example: 1234 is H5-14 = 4D2H, H5-15 = 0.
- H5 settings and the device instance take effect after a power cycle.
- Up to 127 drives per MS/TP segment.
Watch out for
- H5-04 defaults to Alarm Only, so the drive keeps running when BACnet traffic stops.
- BV56 Parameter Enter writes EEPROM (rated about 100,000 writes); don't use it cyclically.
- Don't mix the packed words (AV1, AV4, AV5) with the single-bit BV/BO objects they duplicate.
- Terminal inputs and BACnet multi-function inputs are ORed together.
- Frequency objects use the o1-03 display units, which are not always Hz.
Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 1 | Analog Input 1 Level | Analog input 1 level; Modbus 004EH | % | Read | |
| AI | 2 | Analog Input 2 Level | Analog input 2 level; Modbus 004FH | % | Read | |
| AI | 6 | Display Format o1-03 | Display units setting o1-03; Modbus 0502H | Read | ||
| AI | 7 | Scale Format b5-20 | PI scaling format b5-20; Modbus 01E2H | Read | ||
| AI | 8 | Inverter Model o2-04 | Drive model code o2-04; Modbus 0508F | Read | ||
| AI | 9 | Rated Current n9-01 | Drive rated current n9-01; Modbus 05D0H | A | Read | |
| AO | 1 | Analog Output 1 Level | Analog output 1 level, written by the network; Modbus 0007H | % | Command | |
| AO | 2 | Analog Output 2 Level | Analog output 2 level, written by the network; Modbus 0008H | % | Command | |
| AV | 1 | Operation Cmd (Bitmapped) | Packed run/fault/MF-input command word; Modbus 0x0001 | Command | ||
| AVmin | 2 | Frequency Command | Frequency reference from the network; Modbus 0002H | Hz (display units per o1-03) | Command | |
| AV | 3 | PI Setpoint | PI setpoint from the network; Modbus 0006H | % | Command | |
| AV | 4 | MF Output Cmd (Bitmapped) | Packed relay output command word; Modbus 0x0009 | Command | ||
| AV | 5 | Reference Select Cmd (Bitmapped) | Packed reference-select command word; Modbus 0x000F | Command | ||
| AV | 6 | Drive Status (Bitmapped) | Packed drive status: run, reverse, ready, fault, outputs; Modbus 0x0020 | Read | ||
| AVmin | 7 | Fault Details (Bitmapped) | Packed fault flags; Modbus 0x0021 | Read | ||
| AV | 8 | Data Link Status (Bitmapped) | Packed data-link status; Modbus 0x0022 | Read | ||
| AV | 9 | Frequency Reference | Active frequency reference; Modbus 0040H | Hz (display units per o1-03) | Read | |
| AVmin | 10 | Output Frequency | Output frequency; Modbus 0041H | Hz (display units per o1-03) | Read | |
| AV | 11 | Output Voltage | Output voltage; Modbus 0045H | V | Read | |
| AVmin | 12 | Output Current | Output (motor) current; Modbus 0026H | A | Read | |
| AVmin | 13 | Output Power | Output power; Modbus 0047H | kW | Read | |
| AV | 14 | Torque Reference | Torque reference; Modbus 0048H | % | Read | |
| AV | 18 | DC Bus Voltage | DC bus voltage; Modbus 0031H | V | Read | |
| AV | 19 | PI Feedback Level | PI feedback level; Modbus 0038H | % | Read | |
| AV | 20 | PI Input Level | PI input level; Modbus 0039H | % | Read | |
| AV | 21 | PI Output Level | PI output level; Modbus 003AH | % | Read | |
| AV | 22 | CPU Software | Drive software number; Modbus 005BH | Read | ||
| AV | 23 | Flash Number | Flash ID number; Modbus 004DH | Read | ||
| AV | 25 | kVA Setting | Drive kVA setting; Modbus 0508H | Read | ||
| AV | 26 | Control Method | Control method; Modbus 0043H | Read | ||
| AV | 27 | Accel Time | Acceleration time; Modbus 0200H | s | Write | |
| AV | 28 | Decel Time | Deceleration time; Modbus 0201H | s | Write | |
| AV | 29 | Param Number | Modbus register number for indirect parameter access | Write | ||
| AV | 30 | Param Data | Value of the register selected in AV29 | Write | ||
| BI | 1 | Input Terminal 1 | Digital input terminal S1 status; Modbus 002BH:bit 0 | Read | Active: ON, Inactive: OFF | |
| BI | 2 | Input Terminal 2 | Digital input terminal S2 status; Modbus 002BH:bit 1 | Read | Active: ON, Inactive: OFF | |
| BI | 3 | Input Terminal 3 | Digital input terminal S3 status; Modbus 002BH:bit 2 | Read | Active: ON, Inactive: OFF | |
| BI | 4 | Input Terminal 4 | Digital input terminal S4 status; Modbus 002BH:bit 3 | Read | Active: ON, Inactive: OFF | |
| BI | 5 | Input Terminal 5 | Digital input terminal S5 status; Modbus 002BH:bit 4 | Read | Active: ON, Inactive: OFF | |
| BI | 6 | Input Terminal 6 | Digital input terminal S6 status; Modbus 002BH:bit 5 | Read | Active: ON, Inactive: OFF | |
| BI | 7 | Input Terminal 7 | Digital input terminal S7 status; Modbus 002BH:bit 6 | Read | Active: ON, Inactive: OFF | |
| BI | 8 | Multi-Function Out 1 | Multi-function output 1 status; Modbus 0020H:bit 5 | Read | Active: ON, Inactive: OFF | |
| BI | 9 | Multi-Function Out 2 | Multi-function output 2 status; Modbus 0020H:bit 6 | Read | Active: ON, Inactive: OFF | |
| BO | 1 | MF Output M1-M2 | Relay output M1-M2 command; Modbus 0009H:bit 0 | Command | Active: ON, Inactive: OFF | |
| BO | 2 | MF Output M3-M4 | Relay output M3-M4 command; Modbus 0009H:bit 1 | Command | Active: ON, Inactive: OFF | |
| BO | 3 | MF Output MA-MC | Relay output MA-MC command; Modbus 0009H:bit 2 | Command | Active: ON, Inactive: OFF | |
| BO | 4 | Ref Sel: PI Setpoint | Select the network PI setpoint; Modbus 000FH:bit 1 | Command | Active: ON, Inactive: OFF | |
| BO | 5 | Ref Sel: Term S5 IN | Reference-select bit for terminal S5 input; Modbus 000FH:bit 8 | Command | Active: ON, Inactive: OFF | |
| BO | 6 | Ref Sel: Term S6 IN | Reference-select bit for terminal S6 input; Modbus 000FH:bit 9 | Command | Active: ON, Inactive: OFF | |
| BO | 7 | Refl Sel: Term S7 IN | Reference-select bit for terminal S7 input; Modbus 000FH:bit 10 | Command | Active: ON, Inactive: OFF | |
| BVmin | 1 | RUN FWD | Run forward command; Modbus 0001H:bit 0 | Command | Active: RUN, Inactive: OFF | |
| BV | 2 | RUN REV | Run reverse command; Modbus 0001H:bit 1 | Command | Active: REV, Inactive: OFF | |
| BV | 3 | EXT FAULT | External fault (EF0) command; Modbus 0001H:bit 2 | Command | Active: FAULT, Inactive: OFF | |
| BVmin | 4 | FAULT RESET | Fault reset command; Modbus 0001H:bit 3 | Command | Active: RESET, Inactive: OFF | |
| BV | 5 | COM NET | MF input 1; ComRef when H1-01 = 40; Modbus 0001H:bit 4 | Command | Active: COM, Inactive: LOCAL | |
| BV | 6 | COM CNTRL | MF input 2; ComCtrl when H1-02 = 41; Modbus 0001H:bit 5 | Command | Active: COM, Inactive: LOCAL | |
| BV | 7 | MF Input 3 Cmd | Multi-function input 3 via network; Modbus 0001H:bit 6 | Command | Active: ON, Inactive: OFF | |
| BV | 8 | MF Input 4 Cmd | Multi-function input 4 via network; Modbus 0001H:bit 7 | Command | Active: ON, Inactive: OFF | |
| BV | 9 | MF Input 5 Cmd | Multi-function input 5 via network; Modbus 0001H:bit 8 | Command | Active: ON, Inactive: OFF | |
| BV | 10 | MF Input 6 Cmd | Multi-function input 6 via network; Modbus 0001H:bit 9 | Command | Active: ON, Inactive: OFF | |
| BV | 11 | MF Input 7 Cmd | Multi-function input 7 via network; Modbus 0001H:bit 10 | Command | Active: ON, Inactive: OFF | |
| BV | 12 | Set Fault Contact Cmd | Enables network control of the fault relay; Modbus 0009H:bit 6 | Command | Active: ENABLE, Inactive: OFF | |
| BVmin | 13 | RUN-STOP | Drive running; Modbus 0020H:bit 0 | Read | Active: RUN, Inactive: OFF | |
| BV | 14 | REV-FWD | Rotation direction; Modbus 0020H:bit 1 | Read | Active: REV, Inactive: FWD | |
| BVmin | 15 | READY | Drive ready; Modbus 0020H:bit 2 | Read | Active: READY, Inactive: OFF | |
| BVmin | 16 | FAULT | Drive faulted; Modbus 0020H:bit 3 | Read | Active: FAULTED, Inactive: OFF | |
| BV | 17 | Data Set Error | Data setting error; Modbus 0020H:bit 4 | Read | Active: ERROR, Inactive: OFF | |
| BV | 18 | Overcurrent – Ground Fault | Modbus 0021H:bit 0 | Read | Active: OC-GF, Inactive: OFF | |
| BV | 19 | Main Circuit Overvoltage | Modbus 0021H:bit 1 | Read | Active: OV, Inactive: OFF | |
| BV | 20 | Drive Overload | Modbus 0021H:bit 2 | Read | Active: OL2, Inactive: OFF | |
| BV | 21 | Drive Overheat | Modbus 0021H:bit 3 | Read | Active: OH1-OH2, Inactive: OFF | |
| BV | 22 | Fuse Blown | Modbus 0021H:bit 5 | Read | Active: PUF, Inactive: OFF | |
| BV | 23 | PI Feedback Loss | Modbus 0021H:bit 6 | Read | Active: FBL, Inactive: OFF | |
| BV | 24 | External Fault | Modbus 0021H:bit 7 | Read | Active: EF0-EF, Inactive: OFF | |
| BV | 25 | Hardware Error | Modbus 0021H:bit 8 | Read | Active: CPF, Inactive: OFF | |
| BV | 26 | Mtr Ovrld-OvrTorque | Modbus 0021H:bit 9 | Read | Active: OL1-OL3, Inactive: OFF | |
| BV | 27 | Overspeed | Modbus 0021H:bit 10 | Read | Active: OS-DEV, Inactive: OFF | |
| BV | 28 | Main CKT Undervoltage | Modbus 0021H:bit 11 | Read | Active: UV, Inactive: OFF | |
| BV | 29 | MCU, Cntl Pwr Sy Err | Modbus 0021H:bit 12 | Read | Active: UV1-2-3, Inactive: OFF | |
| BV | 30 | Output Phase Loss | Modbus 0021H:bit 13 | Read | Active: LF, Inactive: OFF | |
| BV | 31 | Communication Error | Modbus 0021H:bit 14 | Read | Active: CE, Inactive: OFF | |
| BV | 32 | Operator Disconnect | Modbus 0021H:bit 15 | Read | Active: OPR, Inactive: OFF | |
| BV | 33 | Operating | Modbus 002CH:bit 0 | Read | Active: OPERATING, Inactive: OFF | |
| BV | 34 | Aero Speed | Modbus 002CH:bit 1 | Read | Active: ON, Inactive: OFF | |
| BV | 35 | Frequency Agree | Modbus 002CH:bit 2 | Read | Active: ON, Inactive: OFF | |
| BV | 36 | Desired Frequency Agree | Modbus 002CH:bit 3 | Read | Active: ON, Inactive: OFF | |
| BV | 37 | Frequency Detect 1 | Modbus 002CH:bit 4 | Read | Active: ON, Inactive: OFF | |
| BV | 38 | Frequency Detect 2 | Modbus 002CH:bit 5 | Read | Active: ON, Inactive: OFF | |
| BV | 39 | Drive Startup Complete | Modbus 002CH:bit 6 | Read | Active: ON, Inactive: OFF | |
| BV | 40 | Low Voltage Detect | Modbus 002CH:bit 7 | Read | Active: ON, Inactive: OFF | |
| BV | 41 | Base Block | Modbus 002CH:bit 8 | Read | Active: ON, Inactive: OFF | |
| BV | 42 | Frequency Reference Mode | Modbus 002CH:bit 9 | Read | Active: COM, Inactive: LOCAL | |
| BV | 43 | Run Command Mode | Modbus 002CH:bit 10 | Read | Active: COM, Inactive: LOCAL | |
| BV | 44 | Overtorque Detect | Modbus 002CH:bit 11 | Read | Active: ON, Inactive: OFF | |
| BV | 45 | Frequency Refer Lost | Modbus 002CH:bit 12 | Read | Active: ON, Inactive: OFF | |
| BV | 46 | Retry Error | Modbus 002CH:bit 13 | Read | Active: ON, Inactive: OFF | |
| BV | 47 | Modbus Comms Error | Modbus 002CH:bit 14 | Read | Active: ON, Inactive: OFF | |
| BV | 48 | Modbus Timeout Error | Modbus 002CH:bit 15 | Read | Active: ON, Inactive: OFF | |
| BV | 49 | CRC Error | Modbus 003DH:bit 0 | Read | Active: ON, Inactive: OFF | |
| BV | 50 | Invalid Data Length | Modbus 003DH:bit 1 | Read | Active: ON, Inactive: OFF | |
| BV | 51 | Parity Error | Modbus 003DH:bit 3 | Read | Active: ON, Inactive: OFF | |
| BV | 52 | Overrun Error | Modbus 003DH:bit 4 | Read | Active: ON, Inactive: OFF | |
| BV | 53 | Framing Error | Modbus 003DH:bit 5 | Read | Active: ON, Inactive: OFF | |
| BV | 54 | Timeout Error | Modbus 003DH:bit 6 | Read | Active: ON, Inactive: OFF | |
| BV | 55 | Parameter Accept | ON = accept parameter writes into RAM; Modbus 0910H:bit 0 | Write | Active: ON, Inactive: OFF | |
| BV | 56 | Parameter Enter | ON = enter parameter writes and save to EEPROM; Modbus 0900H:bit 0 | Write | Active: ON, Inactive: OFF | |
| BV | 57 | Drive Comm Error | Drive communication error | Read | Active: ON, Inactive: OFF |
No points match these filters.
Integration notes
- Object IDs marked Not used (AI3-AI5, AV24) are left out. AV15-AV17 (MF Input Status, Drive Status 2, MF Output Status) are named in the table but have no register, units or access, so they are left out too.
- AV1, AV4 and AV5 are packed command words; the manual says not to use them together with the single-bit objects they duplicate (AV1 with BV1-BV11 or AV5, AV4 with BO1-BO3 or BV12, AV5 with AV1, BO4 or BV9-BV11).
- Frequency units follow the o1-03 display setting.
- AV29/AV30 with BV55/BV56 read and write drive parameters that are not in the object list.
- The device object name is writable from BACnet (20 characters) and takes effect after a power cycle.
- Each description gives the drive's Modbus register where the manual lists one.
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. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the Z1000 HVAC drive (embedded BACnet MS/TP) 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 Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP)
How many BACnet points does the Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) have?
This list has 107 BACnet objects: 6 analog inputs, 2 analog outputs, 26 analog values, 9 binary inputs, 7 binary outputs, 57 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) BACnet points are writable?
32 of the 107 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.
Where is the official Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) BACnet documentation?
The source is YASKAWA AC Drive Z1000, AC Drive for HVAC Fan and Pump, Programming Manual (Appendix B, BACnet Communications) (SIEP C710616 45F), revision 2021-06, published free by Yaskawa at https://www.yaskawa.com/delegate/getAttachment?documentId=SIEPC71061645&cmd=documents&documentName=SIEPC71061645.pdf.
What are the minimum BACnet points to integrate the Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP)?
Start with BV 1 RUN FWD (Start/stop from the BMS (drive)); AV 2 Frequency Command (Frequency reference, units per o1-03); BV 4 FAULT RESET (Reset a tripped drive); BV 13 RUN-STOP (Running status); BV 15 READY (Drive ready to run); AV 10 Output Frequency (Output frequency, units per o1-03); AV 12 Output Current (Motor amps); AV 13 Output Power (Drive power in kW); BV 16 FAULT (Any active drive fault); AV 7 Fault Details (Bitmapped) (Bit-coded active fault flags).
How do I enable BMS control of the Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP)?
Table B.1: set b1-01 Frequency Reference Selection 1 = 2 and b1-02 Run Command Selection 1 = 2 (serial communication); b1-15/b1-16 = 2 do the same for External Reference 2. With H5-12 = 0 (default) BV1 runs forward and BV2 runs reverse; with H5-12 = 1 bit 0 is run/stop and bit 1 sets direction. Monitoring, parameter access, fault set/reset and the multi-function inputs work at any time, whatever b1-01/b1-02 are set to.
Does the Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP) need a BACnet heartbeat or have a communication timeout?
H5-05 = 1 (default) turns on CE detection: if the drive gets no data from the master for H5-09 (0.0-10.0 s, default 2.0 s) it raises a CE fault and acts per H5-04 (0 ramp to stop, 1 coast, 2 fast stop, 3 alarm only and keep running (default), 4 run at d1-04).
Can the BMS supply sensor values to the Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP)?
AV3 PI Setpoint lets the BMS write the PI setpoint; BO4 Ref Sel: PI Setpoint (or AV5 bit 1) selects it. The object list has no writable PI feedback.
How do I check these points on the real Z1000 HVAC drive (embedded BACnet MS/TP)?
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 Yaskawa BACnet points lists
- Variable frequency drive BACnet IP option card
Yaskawa JOHB-SMP3 BACnet/IP option (HV600, Z1000U, GA800 drives)
Yaskawa HV600, FP605, Z1000U, GA500, GA700 and GA800 drives and HV600/FP605 bypasses fitted with the JOHB-SMP3 card.
Also known as: JOHB-SMP3, SMP3, HV600 BACnet/IP, Z1000U BACnet/IP, FP605 BACnet/IP, GA800 BACnet/IP, SIEP C730600 0MB - Variable frequency drive BACnet MS/TP option card
Yaskawa SI-B3 BACnet MS/TP option (A1000, P1000, U1000, FP605 drives)
Yaskawa A1000, P1000, iQpump1000, U1000, FP605 and iQpump605 drives fitted with the SI-B3 BACnet MS/TP option card.
Also known as: SI-B3, SI-B3/V, A1000 BACnet, P1000 BACnet, iQpump1000 BACnet, U1000 BACnet, FP605 BACnet, iQpump605 BACnet, TOEPYAICOM22 - Variable frequency drive with bypass (HVAC)
Yaskawa Z1000 Bypass (BACnet MS/TP)
Yaskawa Z1000 Bypass packages (Z1B1, 208 V and 480 V) connected to BACnet MS/TP at the bypass controller.
Also known as: Z1000 Bypass, Z1B1, Z1000 drive bypass, Z1000 bypass controller, SIEP YAIZ1B 01
Source: YASKAWA AC Drive Z1000, AC Drive for HVAC Fan and Pump, Programming Manual (Appendix B, BACnet Communications) · SIEP C710616 45F · rev. 2021-06. Object names, instances and units are reproduced as published; descriptions are our own.