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Variable frequency drive with bypass (HVAC) · BACnet points list
Yaskawa Z1000 Bypass (BACnet MS/TP) BACnet points list
Updated 28 October 2026
On the Z1000 Bypass the BACnet MS/TP connection is made at the bypass controller, which exposes both drive and bypass data from one address. The list keeps the Z1000 drive objects and adds bypass I/O, bypass run/transfer/smoke-purge commands, HOA and contactor status, bypass fault flags and fault codes. Some objects need newer bypass controller software (VST800298 or VST800400).
This page lists 192 BACnet objects for the Yaskawa Z1000 Bypass (BACnet MS/TP) — 52 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 Bypass (BACnet MS/TP)
- Equipment
- Variable frequency drive with bypass (HVAC)
- Equipment type
- VFDs & pumps
- BACnet objects
- 192 (52 writable)
- Transport
- BACnet MS/TP
- Firmware
- Bypass controller software VST800400 or later for all objects; several need VST800298+
- Default device instance
- 1
- Also known as
- Z1000 Bypass, Z1B1, Z1000 drive bypass, Z1000 bypass controller, SIEP YAIZ1B 01
BMS integration notes: Yaskawa Z1000 Bypass (BACnet MS/TP)
Wire BACnet MS/TP to the bypass controller and set Z3-01 = 3 (BACnet), Z3-02 node, Z3-03 baud and the device instance in Z3-08/Z3-09. Set Z1-07 = 2 and Z1-08 = 2 so the network supplies the speed reference and run command, put the HOA in AUTO, then write BV58 and AV2. Read BV89, BV90 and AV42, and choose the comm-loss action in Z3-05/Z3-06.
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 58 | BYP Run Fwd CMD | Start/stop from the BMS (bypass) | Command |
| AV 2 | Frequency Cmd | Frequency reference, units per o1-03 | Command |
| BV 70 | BYP Fault Reset CMD | Reset a bypass fault | Command |
| BV 89 | BYP RUN Status | Running status | Read |
| BV 82 | BYP AUTO Mode Status | HOA in AUTO, so BMS commands apply | Read |
| AV 10 | Output Frequency | Output frequency, units per o1-03 | Read |
| AV 31 | Motor Current | Motor amps | Read |
| AV 13 | Output Power | Drive power in kW | Read |
| BV 90 | BYP Fault Status | Any active bypass fault | Read |
| AV 42 | Fault Code | Active fault; bypass faults are 10000 + number | Read |
Enable & remote start
Table C.1: Z1-07 Speed Reference Select = 2 and Z1-08 Run Command Select = 2 (BACnet / serial) let the network set speed and start the unit; both default to 1 (terminals). BV58/BV59 run the bypass forward/reverse, BV69 selects drive or bypass and BV67 selects AUTO. Monitoring, parameter access, fault set/reset and the multi-function inputs work at any time.
Heartbeat & communication loss
Z3-05 Serial Communications Fault Select sets the action when nothing is received for Z3-06 (0.0-99.9 s, default 2.0 s; 0.0 never times out): 0 ignore, 1 alarm only (default), 2 EF0 fault to the drive (a unit running in bypass keeps running), 3 EF0 and open the bypass contactor K3, 4 alarm AL14 and run at the Z3-10 preset speed. Z3-13 can make the bypass restore the last BACnet speed and run commands after a power loss (default 0 = off).
Sensors & values from the BMS
AV3 PI Setpoint Cmd lets the BMS write the PI setpoint (-100 to 100 %). BV72-BV79 can act as the bypass digital inputs from the network when Z3-12 = 1.
Network setup
- Z3-01 = 3 selects BACnet (the default); Z3-02 is the MS/TP node (0-127, default 1).
- Z3-03 baud: default 9600 bps, up to 115200 bps; 1200-4800 bps give oPE29 with BACnet on software VST800400 and later.
- Device instance = Z3-08 (low word) + Z3-09 (high word), in hex; default 1.
- Up to 127 bypasses per MS/TP segment.
Watch out for
- Z3-05 defaults to Alarm Only, so the unit keeps running when BACnet traffic stops.
- Z3-13 settings 2 and 3 let the bypass restart from stored BACnet commands at power-up before any new message arrives.
- BV56 Parameter Enter writes EEPROM; don't use it cyclically.
- BV72-BV79 do nothing unless Z3-12 = 1, and then they are ORed with the hard-wired inputs.
- Several monitors and fault-code objects only exist on newer bypass software (VST800298 / VST800400).
Yaskawa Z1000 Bypass (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 | |
| AI | 10 | Motor Current UB-01 | Motor current monitor UB-01; Modbus 8780H | A | Read | |
| AI | 11 | Contactor Voltage | Contactor coil supply voltage; Modbus 8790H | V | 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 | Packed operation command word; Modbus 0001H | Command | ||
| AVmin | 2 | Frequency Cmd | Frequency reference from the network; Modbus 8401H | Hz (display units per o1-03) | Command | |
| AV | 3 | PI Setpoint Cmd | PI setpoint from the network, -100 to 100 %; Modbus 0006H | % | Command | |
| AV | 4 | MF Output Cmd | Packed relay output command word; Modbus 0009H | Command | ||
| AV | 5 | Reference Select Cmd | Packed reference-select command word; Modbus 000FH | Command | ||
| AV | 6 | Drive Status | Packed drive status word; Modbus 0020H | Read | ||
| AV | 7 | Fault Details | Packed fault flags; Modbus 0021H | Read | ||
| AV | 8 | Data Link Status | Packed data-link status; Modbus 0022H | 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 | |
| AV | 12 | Output Current | Output (motor) current; Modbus 0026H | A | Read | |
| AVmin | 13 | Output Power | Output power; Modbus 0047H | kW | Read | |
| AV | 14 | Torque Reference (U1-09) | Torque reference; Modbus 0048H | % | Read | |
| AV | 15 | MF Input Status | Packed multi-function input status; Modbus 002BH | Read | ||
| AV | 16 | Drive Status 2 | Packed drive status 2; Modbus 002CH | Read | ||
| AV | 17 | MF Output Status | Packed multi-function output status; Modbus 002DH | 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 | Drive SW Num | Drive software number; Modbus 004DH | Read | ||
| AV | 23 | Bypass SW Num | Bypass controller software number; Modbus 8791H | Read | ||
| AV | 24 | Comm Error Detail | Packed communication error detail; Modbus 003DH | Read | ||
| AV | 25 | KVA Setting | Drive kVA setting; Modbus 003EH | 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 | Parameter Number | Modbus register number for indirect parameter access | Write | ||
| AV | 30 | Parameter Data | Value of the register selected in AV29 | Write | ||
| AVmin | 31 | Motor Current | Motor current measured by the bypass; Modbus 8780H | A | Read | |
| AV | 32 | 120 V to Kx Coils | 120 V supply to the contactor coils; Modbus 8790H | V | Read | |
| AV | 33 | Drive kWH | Drive energy, kWh (software VST800298+); Modbus 0x005C and 0x005D | kWh | Read | |
| AV | 35 | Drive Run Time | Drive run time (VST800400+); Modbus 0x004C | h | Read | |
| AV | 36 | Output Freq In % | Output frequency in % (VST800400+); Modbus 0x003F | % | Read | |
| AV | 37 | Output Freq In RPM | Output speed in rpm (VST800400+); Modbus 0x003E | RPM | Read | |
| AV | 38 | Torque Iq (U6-01) | Torque current Iq U6-01 (VST800400+); Modbus 0x0051 | % | Read | |
| AV | 39 | Drive HOA Status | Drive HOA status (VST800400+); Modbus 0x07DA first digit | Read | ||
| AV | 40 | Last Drive Fault | Last drive fault code (VST800400+); Modbus 0x0081 | Read | ||
| AV | 41 | Last Bypass Fault | Last bypass fault number, e.g. 3 = FB03 (VST800400+); Modbus 0x878C | Read | ||
| AVmin | 42 | Fault Code | Active fault; bypass faults = 10000 + number; Modbus 0080H / 8788H | Read | ||
| 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 | |
| BI | 10 | BYP DI-1 STAT | Bypass digital input 1 status; Modbus 8781H: bit 0 | Read | Active: ON, Inactive: OFF | |
| BI | 11 | BYP DI-2 STAT | Bypass digital input 2 status; Modbus 8781H: bit 1 | Read | Active: ON, Inactive: OFF | |
| BI | 12 | BYP DI-3 STAT | Bypass digital input 3 status; Modbus 8781H: bit 2 | Read | Active: ON, Inactive: OFF | |
| BI | 13 | BYP DI-4 STAT | Bypass digital input 4 status; Modbus 8781H: bit 3 | Read | Active: ON, Inactive: OFF | |
| BI | 14 | BYP DI-5 STAT | Bypass digital input 5 status; Modbus 8781H: bit 4 | Read | Active: ON, Inactive: OFF | |
| BI | 15 | BYP DI-6 STAT | Bypass digital input 6 status; Modbus 8781H: bit 5 | Read | Active: ON, Inactive: OFF | |
| BI | 16 | BYP DI-7 STAT | Bypass digital input 7 status; Modbus 8781H: bit 6 | Read | Active: ON, Inactive: OFF | |
| BI | 17 | BYP DI-8 STAT | Bypass digital input 8 status; Modbus 8781H: bit 7 | Read | Active: ON, Inactive: OFF | |
| BI | 18 | BYP DO-1 STAT | Bypass digital output 1 status; Modbus 8782H: bit 0 | Read | Active: ON, Inactive: OFF | |
| BI | 19 | BYP DO-2 STAT | Bypass digital output 2 status; Modbus 8782H: bit 1 | Read | Active: ON, Inactive: OFF | |
| BI | 20 | BYP DO-3 STAT | Bypass digital output 3 status; Modbus 8782H: bit 2 | Read | Active: ON, Inactive: OFF | |
| BI | 21 | BYP DO-4 STAT | Bypass digital output 4 status; Modbus 8782H: bit 3 | Read | Active: ON, Inactive: OFF | |
| BI | 22 | BYP DO-5 STAT | Bypass digital output 5 status; Modbus 8782H: bit 4 | Read | Active: ON, Inactive: OFF | |
| BI | 23 | BYP DO-6 STAT | Bypass digital output 6 status; Modbus 8782H: bit 5 | Read | Active: ON, Inactive: OFF | |
| BI | 24 | BYP DO-7 STAT | Bypass digital output 7 status; Modbus 8782H: bit 6 | Read | Active: ON, Inactive: OFF | |
| BI | 25 | BYP DO-8 STAT | Bypass digital output 8 status; Modbus 8782H: bit 7 | Read | Active: ON, Inactive: OFF | |
| BI | 26 | BYP DO-9 STAT | Bypass digital output 9 status; Modbus 8783H: bit 0 | Read | Active: ON, Inactive: OFF | |
| BI | 27 | BYP DO-10 STAT | Bypass digital output 10 status; Modbus 8783H: bit 1 | Read | Active: ON, Inactive: OFF | |
| BI | 28 | Drive Fault Status | Drive fault status (VST800400+); Modbus 004BH: bit 7 | Read | Active: FAULT, Inactive: OK | |
| BI | 29 | Drive Alarm Status | Drive alarm status (VST800400+); Modbus 004BH: bit 6 | Read | Active: ALARM, Inactive: OK | |
| BI | 30 | Drive or Bypass Alarm | Drive or bypass alarm (VST800400+); Modbus 8748H: bit 8 | Read | Active: ALARM, Inactive: OK | |
| 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 M5-M6 | Relay output M5-M6 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 8480H:bit 8 | Command | Active: ON, Inactive: OFF | |
| BO | 6 | Ref Sel: Term S6 IN | Reference-select bit for terminal S6 input; Modbus 8480H:bit 9 | Command | Active: ON, Inactive: OFF | |
| BO | 7 | Refl Sel: Term S7 IN | Reference-select bit for terminal S7 input; Modbus 8480H:bit 10 | Command | Active: ON, Inactive: OFF | |
| BO | 8 | BYP DO-07 COMMAND | Bypass relay output DO-7 command; Modbus 8403H:bit 6 | Command | Active: ON, Inactive: OFF | |
| BO | 9 | BYP DO-08 COMMAND | Bypass relay output DO-8 command; Modbus 8403H:bit 7 | Command | Active: ON, Inactive: OFF | |
| BO | 10 | BYP DO-09 COMMAND | Bypass relay output DO-9 command; Modbus 8403H:bit 8 | Command | Active: ON, Inactive: OFF | |
| BO | 11 | BYP DO-10 COMMAND | Bypass relay output DO-10 command; Modbus 8403H:bit 9 | Command | Active: ON, Inactive: OFF | |
| BV | 3 | Ext Fault Cmd | External fault command; Modbus 8480H:bit 2 | Command | Active: FAULT, Inactive: OFF | |
| BV | 4 | Fault Reset Cmd | Fault reset command; Modbus 8480H:bit 3 | Command | Active: RESET, Inactive: OFF | |
| BV | 7 | MF Input 3 Cmd | Multi-function input 3 via network; Modbus 8480H:bit 6 | Command | Active: ON, Inactive: OFF | |
| BV | 8 | MF Input 4 Cmd | Multi-function input 4 via network; Modbus 8480H:bit 7 | Command | Active: ON, Inactive: OFF | |
| BV | 9 | MF Input 5 Cmd | Multi-function input 5 via network; Modbus 8480H:bit 8 | Command | Active: ON, Inactive: OFF | |
| BV | 10 | MF Input 6 Cmd | Multi-function input 6 via network; Modbus 8480H:bit 9 | Command | Active: ON, Inactive: OFF | |
| BV | 11 | MF Input 7 Cmd | Multi-function input 7 via network; Modbus 8480H: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 | |
| BV | 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 | |
| BV | 15 | READY | Drive ready; Modbus 0020H:bit 2 | Read | Active: READY, Inactive: OFF | |
| BV | 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 – Gnd Flt | Modbus 0021H:bit 0 | Read | Active: OC-GF, Inactive: OFF | |
| BV | 19 | Main Ckt 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 | Zero 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 Freq 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 | Drv 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 Ref Mode | Modbus 8785H:bit 8 | Read | Active: COM, Inactive: LOCAL | |
| BV | 43 | Run Command Mode | Modbus 8485H:bit 9 | Read | Active: COM, Inactive: LOCAL | |
| BV | 44 | Over Torque Detect | Modbus 002CH:bit 11 | Read | Active: ON, Inactive: OFF | |
| BV | 45 | Frequency Ref 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 Comms Error | Drive communication error; Modbus 002CH:bit 15 | Read | Active: ON, Inactive: OFF | |
| BVmin | 58 | BYP Run Fwd CMD | Bypass run forward command; Modbus 8400H: bit 0 | Command | Active: ON, Inactive: OFF | |
| BV | 59 | BYP Run Rev CMD | Bypass run reverse command; Modbus 8400H: bit 1 | Command | Active: ON, Inactive: OFF | |
| BV | 61 | BYP Xfer to BYP CMD | Transfer to bypass command; Modbus 8400H: bit 3 | Command | Active: ON, Inactive: OFF | |
| BV | 62 | BYP Smok Prg BYP CMD | Smoke purge via bypass command; Modbus 8400H: bit 4 | Command | Active: ON, Inactive: OFF | |
| BV | 63 | BYP Smok Prg DRV CMD | Smoke purge via drive command; Modbus 8400H: bit 5 | Command | Active: ON, Inactive: OFF | |
| BV | 64 | BYP Mtr OR Sel CMD | Motor OR select command; Modbus 8400H: bit 6 | Command | Active: ON, Inactive: OFF | |
| BV | 65 | BYP Mtr AND Sel CMD | Motor AND select command; Modbus 8400H: bit 7 | Command | Active: ON, Inactive: OFF | |
| BV | 66 | BYP Drive Select CMD | Drive select command; Modbus 8400H: bit 9 | Command | Active: ON, Inactive: OFF | |
| BV | 67 | BYP Auto Select CMD | Auto mode select command; Modbus 8400H: bit 10 | Command | Active: ON, Inactive: OFF | |
| BV | 69 | BYP BYPASS Sel CMD | Bypass/drive select (BYP = bypass); Modbus 8400H: bit 12 | Command | Active: BYP, Inactive: DRV | |
| BVmin | 70 | BYP Fault Reset CMD | Bypass fault reset command; Modbus 8400H: bit 13 | Command | Active: ON, Inactive: OFF | |
| BV | 71 | BYP Ext Fault CMD | Bypass external fault command; Modbus 8400H: bit 14 | Command | Active: ON, Inactive: OFF | |
| BV | 72 | BYP DI-01 Command | Network bypass digital input 1 (needs Z3-12 = 1); Modbus 8402H: bit 0 | Write | Active: ON, Inactive: OFF | |
| BV | 73 | BYP DI-02 Command | Network bypass digital input 2 (needs Z3-12 = 1); Modbus 8402H: bit 1 | Write | Active: ON, Inactive: OFF | |
| BV | 74 | BYP DI-03 Command | Network bypass digital input 3 (needs Z3-12 = 1); Modbus 8402H: bit 2 | Write | Active: ON, Inactive: OFF | |
| BV | 75 | BYP DI-04 Command | Network bypass digital input 4 (needs Z3-12 = 1); Modbus 8402H: bit 3 | Write | Active: ON, Inactive: OFF | |
| BV | 76 | BYP DI-05 Command | Network bypass digital input 5 (needs Z3-12 = 1); Modbus 8402H: bit 4 | Write | Active: ON, Inactive: OFF | |
| BV | 77 | BYP DI-06 Command | Network bypass digital input 6 (needs Z3-12 = 1); Modbus 8402H: bit 5 | Write | Active: ON, Inactive: OFF | |
| BV | 78 | BYP DI-07 Command | Network bypass digital input 7 (needs Z3-12 = 1); Modbus 8402H: bit 6 | Write | Active: ON, Inactive: OFF | |
| BV | 79 | BYP DI-08 Command | Network bypass digital input 8 (needs Z3-12 = 1); Modbus 8402H: bit 7 | Write | Active: ON, Inactive: OFF | |
| BV | 80 | BYP HAND Mode Status | HOA in HAND; Modbus 8784H: bit 0 | Read | Active: ON, Inactive: OFF | |
| BV | 81 | BYP OFF Mode Status | HOA in OFF; Modbus 8784H: bit 1 | Read | Active: ON, Inactive: OFF | |
| BVmin | 82 | BYP AUTO Mode Status | HOA in AUTO; Modbus 8784H: bit 2 | Read | Active: ON, Inactive: OFF | |
| BV | 83 | BYP DRV Mode Status | Drive (DRV) mode selected; Modbus 8784H: bit 3 | Read | Active: ON, Inactive: OFF | |
| BV | 84 | BYP BYPASS Mode Stat | Bypass mode selected; Modbus 8784H: bit 4 | Read | Active: ON, Inactive: OFF | |
| BV | 85 | BYP Smk Prg BYP Stat | Smoke purge via bypass active; Modbus 8784H: bit 5 | Read | Active: ACTIVE, Inactive: OFF | |
| BV | 86 | BYP Smk Prg DRV Stat | Smoke purge via drive active; Modbus 8784H: bit 6 | Read | Active: ACTIVE, Inactive: OFF | |
| BV | 87 | BYP Safety Status | Customer safety circuit open; Modbus 8784H: bit 7 | Read | Active: OPEN, Inactive: CLOSED | |
| BV | 88 | BYP BAS Interlk Stat | BAS interlock open; Modbus 8785H: bit 0 | Read | Active: OPEN, Inactive: CLOSED | |
| BVmin | 89 | BYP RUN Status | Bypass run status; Modbus 8785H: bit 1 | Read | Active: RUN, Inactive: OFF | |
| BVmin | 90 | BYP Fault Status | Bypass fault status; Modbus 8785H: bit 2 | Read | Active: FAULT, Inactive: OFF | |
| BV | 91 | BYP Auto Xfer Status | Auto transfer to bypass active; Modbus 8785H: bit 3 | Read | Active: ACTIVE, Inactive: OFF | |
| BV | 92 | BYP Remote Xfer Stat | Remote transfer to bypass active; Modbus 8785H: bit 4 | Read | Active: ACTIVE, Inactive: OFF | |
| BV | 93 | BYP Energy Save Stat | Energy-saving bypass active; Modbus 8785H: bit 5 | Read | Active: ACTIVE, Inactive: OFF | |
| BV | 94 | BYP Motor 1 Sel Stat | Motor 1 selected; Modbus 8785H: bit 6 | Read | Active: SELECT, Inactive: OFF | |
| BV | 95 | BYP Motor 2 Sel Stat | Motor 2 selected; Modbus 8785H: bit 7 | Read | Active: SELECT, Inactive: OFF | |
| BV | 96 | BYP Drive Flt Status | Drive fault (bypass view); Modbus 8786H: bit 0 | Read | Active: FAULT, Inactive: OFF | |
| BV | 97 | BYP Safety Flt Stat | Safety circuit fault; Modbus 8786H: bit 1 | Read | Active: FAULT, Inactive: OFF | |
| BV | 98 | BYP BAS ILock Status | BAS interlock fault; Modbus 8786H: bit 2 | Read | Active: FAULT, Inactive: OFF | |
| BV | 99 | BYP Ext Fault Stat | External fault; Modbus 8786H: bit 3 | Read | Active: FAULT, Inactive: OFF | |
| BV | 101 | BYP Motor OL Stat | Motor overload fault; Modbus 8786H: bit 5 | Read | Active: FAULT, Inactive: OFF | |
| BV | 102 | BYP Motor 1 OL Stat | Motor 1 overload fault; Modbus 8786H: bit 6 | Read | Active: FAULT, Inactive: OFF | |
| BV | 103 | BYP Mtr 2 OL Stat | Motor 2 overload fault; Modbus 8786H: bit 7 | Read | Active: FAULT, Inactive: OFF | |
| BV | 104 | BYP Input Phase Loss | Input phase loss fault; Modbus 8787H: bit 0 | Read | Active: FAULT, Inactive: OFF | |
| BV | 105 | BYP Drive Comms | Drive communication fault; Modbus 8787H: bit 2 | Read | Active: FAULT, Inactive: OFF | |
| BV | 106 | BYP Loss Of Load | Loss of load fault; Modbus 8787H: bit 5 | Read | Active: FAULT, Inactive: OFF | |
| BV | 107 | BYP Option Brd Comms | Option board communication fault; Modbus 8787H: bit 3 | Read | Active: FAULT, Inactive: OFF |
No points match these filters.
Integration notes
- Objects named Not used/Not Used (AI3-AI5, BV1, BV2, BV5, BV6, BV60, BV68, BV100) are left out.
- AV41 is printed twice in the manual with the same data; it is listed once. AV34 is not in the table. The manual prints BO10/BO11 as B010/B011.
- AV33 needs bypass software VST800298 or later; AV35-AV42 and BI28-BI30 need VST800400 or later.
- BV72-BV79 (network digital inputs) are disabled unless Z3-12 = 1; those inputs are ORed with the physical S1-S8 inputs.
- AV29/AV30 with BV55/BV56 read and write drive or bypass parameters by Modbus register number.
- Each description gives the 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 Bypass (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 Bypass (BACnet MS/TP)
How many BACnet points does the Yaskawa Z1000 Bypass (BACnet MS/TP) have?
This list has 192 BACnet objects: 8 analog inputs, 2 analog outputs, 41 analog values, 30 binary inputs, 11 binary outputs, 100 binary values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Yaskawa Z1000 Bypass (BACnet MS/TP) BACnet points are writable?
52 of the 192 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 Bypass (BACnet MS/TP) BACnet documentation?
The source is YASKAWA AC Drive Z1000 Bypass Technical Manual (Appendix C, BACnet Communications) (SIEP YAIZ1B 01F), revision 2018-03, published free by Yaskawa at https://www.yaskawa.com/delegate/getAttachment?documentId=SIEPYAIZ1B01&cmd=documents&documentName=SIEPYAIZ1B01.pdf.
What are the minimum BACnet points to integrate the Yaskawa Z1000 Bypass (BACnet MS/TP)?
Start with BV 58 BYP Run Fwd CMD (Start/stop from the BMS (bypass)); AV 2 Frequency Cmd (Frequency reference, units per o1-03); BV 70 BYP Fault Reset CMD (Reset a bypass fault); BV 89 BYP RUN Status (Running status); BV 82 BYP AUTO Mode Status (HOA in AUTO, so BMS commands apply); AV 10 Output Frequency (Output frequency, units per o1-03); AV 31 Motor Current (Motor amps); AV 13 Output Power (Drive power in kW); BV 90 BYP Fault Status (Any active bypass fault); AV 42 Fault Code (Active fault; bypass faults are 10000 + number).
How do I enable BMS control of the Yaskawa Z1000 Bypass (BACnet MS/TP)?
Table C.1: Z1-07 Speed Reference Select = 2 and Z1-08 Run Command Select = 2 (BACnet / serial) let the network set speed and start the unit; both default to 1 (terminals). BV58/BV59 run the bypass forward/reverse, BV69 selects drive or bypass and BV67 selects AUTO. Monitoring, parameter access, fault set/reset and the multi-function inputs work at any time.
Does the Yaskawa Z1000 Bypass (BACnet MS/TP) need a BACnet heartbeat or have a communication timeout?
Z3-05 Serial Communications Fault Select sets the action when nothing is received for Z3-06 (0.0-99.9 s, default 2.0 s; 0.0 never times out): 0 ignore, 1 alarm only (default), 2 EF0 fault to the drive (a unit running in bypass keeps running), 3 EF0 and open the bypass contactor K3, 4 alarm AL14 and run at the Z3-10 preset speed. Z3-13 can make the bypass restore the last BACnet speed and run commands after a power loss (default 0 = off).
Can the BMS supply sensor values to the Yaskawa Z1000 Bypass (BACnet MS/TP)?
AV3 PI Setpoint Cmd lets the BMS write the PI setpoint (-100 to 100 %). BV72-BV79 can act as the bypass digital inputs from the network when Z3-12 = 1.
How do I check these points on the real Z1000 Bypass (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 (HVAC)
Yaskawa Z1000 HVAC drive (embedded BACnet MS/TP)
Yaskawa Z1000 HVAC fan and pump drives (CIMR-ZU, 200 V and 400 V class) using the built-in RS-485 port with H5-08 set to BACnet.
Also known as: Z1000, CIMR-ZU, CIMR-ZUA, Z1000 AC Drive for HVAC Fan and Pump, SIEP C710616 45
Source: YASKAWA AC Drive Z1000 Bypass Technical Manual (Appendix C, BACnet Communications) · SIEP YAIZ1B 01F · rev. 2018-03. Object names, instances and units are reproduced as published; descriptions are our own.