An unofficial summary of facts (addresses, types, units, scaling) from the maker's manual. Not affiliated with the maker; values can differ by firmware or model. Always check the device manual before writing (run commands, settings).
Default communication
| Protocol | Modbus RTU |
|---|---|
| Baud (factory) | 9600 bps — options: 1200, 2400, 4800, 9600, 19200, 38400 |
| Data · parity · stop | 8 · None · 1 |
| Slave ID (factory) | 31 (1~32) |
| Max per request | 16 registers |
| Manual address style | Wire address as is (0-based) |
- Addressing: the read example (p.446) sends slave 02, FC03, start 00 20, count 00 04, CRC 45 F0 to read from 0020H (drive status 1); the write example (p.447) sends FC10 start 00 01, 2 registers, writing 0001h (forward run) to 0001H and 1770h (60.00 Hz) to 0002H. Manual address = frame address. (The write example's CRC is printed as 6D 67 but computes to 6D B7; this does not affect addressing.)
- Only function codes 03H (read, up to 16 registers), 08H (loopback) and 10H (write multiple) — no 06H (p.444, p.446).
- Defaults: H5-01 address 1F (31), range 0-20H (0 = no response); H5-02 3 = 9600 bps; H5-03 0 = no parity; 8 data bits and 1 stop bit fixed, RTU only (p.434, p.439). Cycle power after changes.
- Speeds: the spec table (p.434) and H5-02 list (p.439) go up to 57.6/76.8/115.2 kbps, but the H5-02 setting range reads 0-5 (38400 bps), so bauds stop at 38400.
- When writing parameters, H5-11 = 0 requires an Enter command (0900H/0910H); the default 1 applies changes immediately (p.441).
Registers (32)
«Wire» is the 0-based address in the request frame (PortDock's «0-based» notation). Value = raw × scale. Table: HR holding register, IR input register, CO coil, DI discrete input. Function codes in hex.
32
Swipe the table sideways — the first column (manual address) stays put.
| Manual | Wire | Table | Name | Type | Unit · scale | R/W | FC | Details |
|---|---|---|---|---|---|---|---|---|
| 0001H | 1 (0x0001) | HR | Operation signals and multi-function inputs | U16 | R/W | 03·10 | H5-12 default 0 (FWD/stop, REV/stop). Runs when run command source b1-02 = 2 (MEMOBUS) b0 Forward run (H5-12=0) / Run (H5-12=1) · b1 Reverse run (H5-12=0) / FWD-REV, 1 = reverse (H5-12=1) · b2 External fault (EF0) · b3 Fault reset · b4 Multi-function input 1 · b5 Multi-function input 2 · b6 Multi-function input 3 · b7 Multi-function input 4 · b8 Multi-function input 5 · b9 Multi-function input 6 · b10 Multi-function input 7 p.448 | |
| 0002H | 2 (0x0002) | HR | Frequency reference | U16 | ×0.01 Hz | R/W | 03·10 | Unit set by o1-03 (default 0 = 0.01 Hz). Needs frequency source b1-01 = 2. Manual FC10 example: 60.00 Hz = 1770h (p.447) p.448 |
| 0003H | 3 (0x0003) | HR | Output voltage gain | U16 | ×0.1 % | R/W | 03·10 | 1000 (100.0%) at power-up Range 2 ~ 200 % p.448 |
| 0006H | 6 (0x0006) | HR | PID target | S16 | ×0.01 % | R/W | 03·10 | p.448 |
| 0009H | 9 (0x0009) | HR | Multi-function digital output settings | U16 | R/W | 03·10 | b0 Contact output (MA/MB-MC) · b1 Photocoupler output 1 (P1-PC) · b2 Photocoupler output 2 (P2-PC) p.448 | |
| 0020H | 32 (0x0020) | HR | Drive status 1 | U16 | R | 03 | b0 During run · b1 During reverse · b2 Drive ready · b3 Fault · b4 Data setting error · b5 Multi-function contact output (MA/MB-MC) · b6 Multi-function photocoupler output 1 (P1-PC) · b7 Multi-function photocoupler output 2 (P2-PC) · b14 ComRef enabled · b15 ComCtrl enabled p.449 | |
| 0021H | 33 (0x0021) | HR | Fault contents 1 | U16 | R | 03 | b0 Overcurrent (oC), ground fault (GF), IGBT short circuit (SC) · b1 Overvoltage (ov) · b2 Drive overload (oL2) · b3 Overheat 1 (oH1), drive overheat warning (oH2) · b4 Braking transistor fault (rr), braking resistor overheat (rH) · b6 PID feedback loss (FbL/FbH) · b7 External fault EF0-7 · b8 Hardware fault CPF (incl. oFA) · b9 Motor overload (oL1), overtorque (oL3/oL4), undertorque (UL3/UL4) · b10 PG disconnected (PGo), overspeed (oS), speed deviation (dEv) · b11 Main circuit undervoltage (Uv) · b12 Undervoltage (Uv1), control power undervoltage (Uv2), soft charge fault (Uv3) · b13 Output phase loss (LF), input phase loss (PF) · b14 MEMOBUS communication error (CE), option communication error (bUS) · b15 Operator connection fault (oPr) p.449 | |
| 0022H | 34 (0x0022) | HR | Data link status | U16 | R | 03 | b0 Writing data or switching motors · b3 Upper or lower limit error · b4 Data conformity error · b5 Writing to EEPROM p.449 | |
| 0023H | 35 (0x0023) | HR | Frequency reference (monitor) | U16 | ×0.01 Hz | R | 03 | Unit set by o1-03 (default 0 = 0.01 Hz) (p.456 note <1>) p.449 |
| 0024H | 36 (0x0024) | HR | Output frequency | U16 | ×0.01 Hz | R | 03 | Unit set by o1-03 (default 0 = 0.01 Hz) (p.456 note <1>) p.449 |
| 0025H | 37 (0x0025) | HR | Output voltage reference | U16 | ×0.1 V | R | 03 | 0.1 V when H5-10 = 0 (default), 1 V when 1 p.449 |
| 0026H | 38 (0x0026) | HR | Output current | U16 | A | R | 03 | Scale by model: BA0001-BA0018, 2A0001-2A0040, 4A0001-4A0023 = 0.01 A; 2A0056-2A0069, 4A0031-4A0038 = 0.1 A (p.456 note <2>) p.449 |
| 0027H | 39 (0x0027) | HR | Output power | U16 | R | 03 | No unit given in the data table p.449 | |
| 0029H | 41 (0x0029) | HR | Fault contents 2 | U16 | R | 03 | b0 IGBT short circuit or ground fault (SC) · b1 Ground fault (GF) · b2 Input phase loss (PF) · b3 Output phase loss (LF) · b4 Braking resistor overheat (rH) · b6 Motor overheat 2, PTC input (oH4) p.450 | |
| 002AH | 42 (0x002A) | HR | Alarm contents 1 | U16 | R | 03 | b2 Run command input error (EF) · b3 Drive baseblock (bb) · b4 Overtorque detection 1 (oL3) · b5 Heatsink overheat (oH) · b6 Overvoltage (ov) · b7 Undervoltage (Uv) · b9 MEMOBUS communication error (CE) · b10 Option communication error (bUS) · b11 Undertorque detection 1/2 (UL3/UL4) · b12 Motor overheat (oH3) · b13 PID feedback loss (FbL, FbH) · b15 Serial communication transmission error (CALL) p.450 | |
| 002BH | 43 (0x002B) | HR | Input terminal status | U16 | R | 03 | b0 Terminal S1 closed · b1 Terminal S2 closed · b2 Terminal S3 closed · b3 Terminal S4 closed · b4 Terminal S5 closed · b5 Terminal S6 closed · b6 Terminal S7 closed p.450 | |
| 002CH | 44 (0x002C) | HR | Drive status 2 | U16 | R | 03 | b0 During run · b1 Zero speed · b2 Speed agree · b3 User speed agree · b4 Frequency detection 1 · b5 Frequency detection 2 · b6 Drive ready · b7 During undervoltage · b8 During baseblock · b9 Frequency reference from operator keypad · b10 Run command from operator keypad · b11 Over/undertorque 1, 2 · b12 Frequency reference loss · b13 During fault restart · b14 Fault · b15 Communication timeout p.451 | |
| 002DH | 45 (0x002D) | HR | Output terminal status | U16 | R | 03 | b0 Multi-function contact output (MA/MB-MC) · b1 Multi-function photocoupler output 1 (P1-PC) · b2 Multi-function photocoupler output 2 (P2-PC) p.451 | |
| 0031H | 49 (0x0031) | HR | DC bus voltage | U16 | V | R | 03 | p.451 |
| 0038H | 56 (0x0038) | HR | PID feedback | U16 | ×0.1 % | R | 03 | Unsigned, 100% = max. output frequency p.451 |
| 0039H | 57 (0x0039) | HR | PID input | S16 | ×0.1 % | R | 03 | 100% = max. output frequency p.451 |
| 003AH | 58 (0x003A) | HR | PID output | S16 | ×0.1 % | R | 03 | 100% = max. output frequency p.451 |
| 003DH | 61 (0x003D) | HR | Communications error log | U16 | R | 03 | Kept until fault reset b0 CRC error · b1 Data length error · b3 Parity error · b4 Overrun error · b5 Framing error · b6 Timeout p.451 | |
| 004BH | 75 (0x004B) | HR | Drive status (U1-12) | U16 | R | 03 | b0 During run · b1 During zero speed · b2 During reverse run · b3 During fault reset signal input · b4 During speed agree · b5 Drive ready · b6 Alarm · b7 Fault · b8 During operation error (oPE) · b9 During momentary power loss · b10 Motor 2 selected · b14 ComRef / NetRef status · b15 ComCtrl / NetCtrl status p.452 | |
| 007FH | 127 (0x007F) | HR | Alarm code | U16 | R | 03 | Code meanings: alarm register table p.458 p.452 | |
| 0080H | 128 (0x0080) | HR | Current fault (U2-01) | U16 | R | 03 | Value is a fault code (Table C.4); only some listed 2 = Uv1 undervoltage · 3 = Uv2 control power supply undervoltage · 4 = Uv3 soft charge circuit fault · 6 = GF ground fault · 7 = oC overcurrent · 8 = ov overvoltage · 9 = oH heatsink overheat · 10 = oH1 heatsink overheat · 11 = oL1 motor overload · 12 = oL2 drive overload · 13 = oL3 overtorque detection 1 · 14 = oL4 overtorque detection 2 · 27 = PF input phase loss · 28 = LF output phase loss · 33 = CE MEMOBUS/Modbus communication error p.400, p.457 Table C.4 | |
| 0081H | 129 (0x0081) | HR | Previous fault (U2-02) | U16 | R | 03 | Value is a fault code (Table C.4); only some listed 2 = Uv1 undervoltage · 3 = Uv2 control power supply undervoltage · 4 = Uv3 soft charge circuit fault · 6 = GF ground fault · 7 = oC overcurrent · 8 = ov overvoltage · 9 = oH heatsink overheat · 10 = oH1 heatsink overheat · 11 = oL1 motor overload · 12 = oL2 drive overload · 13 = oL3 overtorque detection 1 · 14 = oL4 overtorque detection 2 · 27 = PF input phase loss · 28 = LF output phase loss · 33 = CE MEMOBUS/Modbus communication error p.400, p.457 Table C.4 | |
| 0098H | 152 (0x0098) | HR | Cumulative operation time (U4-01), 10 h units | U16 | ×10 h | R | 03 | For 12345 h: 0098H = 1234, 0099H = 5 p.452 |
| 0099H | 153 (0x0099) | HR | Cumulative operation time (U4-01), 1 h digit | U16 | h | R | 03 | p.452 |
| 00ABH | 171 (0x00AB) | HR | Drive rated current | U16 | A | R | 03 | Scale by model as for 0026H (0.01 A or 0.1 A) (p.456 note <2>) p.452 |
| 0900H | 2304 (0x0900) | HR | Enter command (save to EEPROM) | U16 | W | 10 | Write 0. Reading returns error 02H. EEPROM limited to 100,000 writes p.459 | |
| 0910H | 2320 (0x0910) | HR | Enter command (RAM only) | U16 | W | 10 | Write 0. Changes are lost at power-off p.459 |
Notes
- To run and set frequency by communication set b1-02 = 2 and b1-01 = 2 (p.442 Table C.1).
Read it with PortDock
- Install the free PortDock Modbus Master and connect with the device's settings.
- On the table toolbar, «Device profile…» → pick this device → «Load». Polling tables, names, types and the Slave ID are filled in (optionally the serial settings too).
- Names carry the unit and scale (e.g. «×0.01 Hz»). Values on screen are raw — multiply by the scale.
- To test your program without the device, PortDock Modbus Slave's «Emulate device…» serves the same map with example values.
Download JSON
- yaskawa/v1000.json (GitHub raw) · copy on this site · history
- schema.json — format (JSON Schema). table, address (0-based), type and order match the PortDock CSV.
- License: CC BY 4.0 — please cite:
PortDock device register maps, v2026.10 · 09ac1d0b2792, https://portdock.dev/devices/
and this page. LICENSE · data bundle, version and changelog - Found a mistake? Please open a GitHub issue with the manual page.
Sources
- YASKAWA AC Drive-V1000 Compact Vector Control Drive Technical Manual (SIEP C710606 18F) — YASKAWA ELECTRIC CORPORATION, SIEP C710606 18F <6>, published December 2016 · Appendix C MEMOBUS/Modbus pp.434-459, U monitor table pp.399-400 · checked 2026-10-23