Schneider Electric Altivar 12 ATV12 Modbus register map
Variable speed drive for asynchronous motors. The map covers the control and status words, speed and frequency references, output frequency, current, power and thermal states, fault code and fault history, identification, the Modbus line parameters and the communication scanner, and key motor, ramp, speed and PID settings. The full parameter list is in the communication parameters file.
- Protocol
- Modbus RTU
- Defaults
- Modbus RTU through the RJ45 port, 2-wire RS485. Factory settings: drive address OFF (set 1 to 247 before use), 19200 bps, 8 data bits with even parity and 1 stop bit (8E1), time-out 10 s (Modbus manual BBV28590 p. 9).
- Addresses in the manual
- 0-based protocol addresses, as sent on the wire
- 32 and 64-bit values
- Not stated in the manual
- Registers listed
- 101
- Checked against
- BBV51917 ATV12 Communication Parameters V1.4IE05 (Excel file; copy hosted by a third party on eurotherm.com, no copy on download.se.com or se.com could be found; the Schneider document page was unavailable when checked), read together with the vendor-hosted Modbus Communication Manual BBV28590 06/2012
Address base. The parameters file prints each logic address in decimal and as 16#hex (for example CMD 16#2135 = 8501, LFRD 16#219A = 08602). The Modbus manual (BBV28590 p. 14) shows a write to W9001 sent with word number 2329 hex, which is 9001, and states that scanner addresses are always the Modbus address. The decimal address printed in the source is therefore the address sent in the Modbus frame. Address 8501 in the manual is address 8501 on the wire.
Word order. Every variable is one 16-bit word, so word order does not apply.
Modbus Poll and the Modbus protocol itself count from 0. The "Wire address" column is the number to type into Modbus Poll.
Downloads
The register table has every column on this page. The blocks file imports into Modbus Poll. The template JSON holds the same blocks plus unit, scale and access for scripts.
Registers
101 registers
| Manual | Wire | Register | Type | Regs | Unit | Scale | Access | Area |
|---|---|---|---|---|---|---|---|---|
| 8501 | 8501 | Control word, frequency variantCMD · Bit 0 switch on, bit 1 disable voltage (active at 0), bit 2 quick stop (active at 0), bit 3 enable operation, bit 7 fault reset on a rising edge, bit 8 0 = run asked and 1 = stop asked, bit 11 direction of rotation (0 forward, 1 reverse). Example values 0006 hex shutdown, 0007 hex switch on, 000F hex enable operation, 0080 hex fault reset (BBV28590 p. 19). |
bitfield16 | 1 | 1 | RW | Holding (FC03) | |
| 8601 | 8601 | Control word, speed variantCMD_Speed · Second address of CMD. The source lists 8601 as the address to use with the speed reference in rpm (LFRD) and 8501 with the frequency reference in Hz (LFR). |
bitfield16 | 1 | 1 | RW | Holding (FC03) | |
| 8504 | 8504 | Extended control wordCMI · Bit 0 factory setting command, bit 1 save configuration to EEPROM (resets itself to 0), bit 9 selects the unit of LFR and RFR: 0 = 0.1 Hz, 1 = standardized value. Bit 15 deactivates the parameter consistency check. |
bitfield16 | 1 | 1 | RW | Holding (FC03) | |
| 8602 | 8602 | Speed setpointLFRD · Range -32767 to 32767 rpm. |
int16 | 1 | rpm | 1 | RW | Holding (FC03) |
| 8502 | 8502 | Frequency setpointLFR · Unit follows bit 9 of CMI (0.1 Hz when bit 9 is 0). |
int16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 8503 | 8503 | PID regulator setpointPISP · Range 0 to 100 %. |
uint16 | 1 | % | 0.1 | RW | Holding (FC03) |
| 5281 | 5281 | Analog input virtualAIV1 · Range 0 to 100 %. |
int16 | 1 | % | 0.1 | RW | Holding (FC03) |
| 3120 | 3120 | Reset counters commandRPR · Enumeration; factory setting NO. |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 3201 | 3201 | Status word, frequency variantETA · Bit 0 ready to switch on, bit 1 switched on, bit 2 operation enabled, bit 3 fault, bit 4 voltage enabled (always 1), bit 5 quick stop (0 = quick stop), bit 6 switch on disabled, bit 9 remote (1 = command or reference via the network), bit 10 reference reached, bit 11 reference outside LSP and HSP, bit 14 stop via STOP key, bit 15 direction (0 forward, 1 reverse). Masked with 006F hex: 0031 ready to switch on, 0033 switched on, 0037 operation enabled (BBV28590 p. 20). |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 8603 | 8603 | Status word, speed variantETA_Speed · Second address of ETA. The source lists 8603 with the speed reference in rpm and 3201 with the frequency reference in Hz. |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 3240 | 3240 | Product statusHMIS · Enumeration shown with its display codes: 0 tUn, 1 dCb, 2 rdY, 3 nSt, 4 rUn, 5 ACC, 6 dEC, 7 CLI, 8 FSt, 11 nLP, 13 CtL, 14 Obr, 23 FLt, 24 FrF, 31 rEM, 32 LOC. The meaning of each code is in the ATV12 user manual. |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 3206 | 3206 | Extended status wordETI · Bit 0 EEPROM access in progress, bit 2 fault no longer present but not reset, bit 5 DC injection, bit 6 transient state, bit 7 motor thermal threshold reached, bit 9 accelerating, bit 10 decelerating, bit 11 current limit, bit 12 fast stop, bits 13 and 14 control channel (bit 14 set and bit 13 clear = Modbus), bit 15 reverse before ramp. |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 8441 | 8441 | Active reference channelCRC |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 8442 | 8442 | Active command channelCCC |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 8604 | 8604 | Output velocityRFRD |
int16 | 1 | rpm | 1 | R | Holding (FC03) |
| 3202 | 3202 | Estimated motor frequencyRFR · Signed. Unit follows bit 9 of CMI (0.1 Hz when bit 9 is 0). |
int16 | 1 | Hz | 0.1 | R | Holding (FC03) |
| 3204 | 3204 | Estimated motor currentLCR |
uint16 | 1 | A | 0.1 | R | Holding (FC03) |
| 3211 | 3211 | Output power monitoringOPR · 100 % corresponds to the nominal motor power. |
int16 | 1 | % | 1 | R | Holding (FC03) |
| 3203 | 3203 | Frequency reference before rampFRH |
int16 | 1 | Hz | 0.1 | R | Holding (FC03) |
| 11982 | 11982 | PID reference after rampRPC |
uint16 | 1 | % | 0.1 | R | Holding (FC03) |
| 11981 | 11981 | PID regulator feedbackRPF |
uint16 | 1 | % | 0.1 | R | Holding (FC03) |
| 11980 | 11980 | PID regulator discrepancyRPE |
int16 | 1 | % | 0.1 | R | Holding (FC03) |
| 3207 | 3207 | Main voltage (from DC bus)ULN |
uint16 | 1 | V | 1 | R | Holding (FC03) |
| 3209 | 3209 | Drive thermal stateTHD |
uint16 | 1 | % | 1 | R | Holding (FC03) |
| 9630 | 9630 | Motor thermal stateTHR |
uint16 | 1 | % | 1 | R | Holding (FC03) |
| 3233 | 3233 | Total drive operating timePTH |
uint16 | 1 | h | 0.01 | R | Holding (FC03) |
| 3232 | 3232 | Run elapsed timeRTHI |
uint16 | 1 | h | 0.01 | R | Holding (FC03) |
| 3236 | 3236 | Process elapsed timePET |
uint16 | 1 | h | 0.01 | RW | Holding (FC03) |
| 3239 | 3239 | Fan timeFTH |
uint16 | 1 | h | 0.01 | R | Holding (FC03) |
| 3235 | 3235 | IGBT alarm timeTAC |
uint16 | 1 | s | 1 | RW | Holding (FC03) |
| 3242 | 3242 | Time at the minimum frequencyTAC2 |
uint16 | 1 | s | 1 | RW | Holding (FC03) |
| 5201 | 5201 | Logic inputs stateIL1I |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 5212 | 5212 | Logic outputs stateOL1R |
bitfield16 | 1 | 1 | RW | Holding (FC03) | |
| 5222 | 5222 | Analog input stateAI1I |
int16 | 1 | 1 | R | Holding (FC03) | |
| 5232 | 5232 | Analog input 1 standardized valueAI1R |
int16 | 1 | 1 | R | Holding (FC03) | |
| 5261 | 5261 | Analog output 1 standardized valueAO1R |
int16 | 1 | 1 | RW | Holding (FC03) | |
| 7121 | 7121 | Altivar fault codeLFT · Enumeration; 0 means no fault (NOF). For example 9 OCF, 16 OHF, 17 OLF, 22 USF. Full list in the Enumerations sheet. |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 7130 | 7130 | Incorrect configurationCIC · Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
bitfield16 | 1 | 1 | RW | Holding (FC03) | |
| 7200 | 7200 | Fault code on last faultDP0 · Enumeration, same codes as LFT. |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 7210 | 7210 | Status word on last faultEP0 |
bitfield16 | 1 | 1 | R | Holding (FC03) | |
| 7201 | 7201 | Fault code on fault n-1DP1 · Enumeration, same codes as LFT. Records n-2 to n-4 are DP2 to DP4 at 7202 to 7204. |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 7271 | 7271 | Supply voltage on fault n-1ULP1 |
uint16 | 1 | V | 1 | R | Holding (FC03) |
| 7241 | 7241 | Motor current on fault n-1LCP1 |
int16 | 1 | A | 0.1 | R | Holding (FC03) |
| 7251 | 7251 | Output frequency on fault n-1RFP1 |
int16 | 1 | Hz | 0.1 | R | Holding (FC03) |
| 7261 | 7261 | Motor operating time on fault n-1RTP1 |
uint16 | 1 | h | 1 | R | Holding (FC03) |
| 3011 | 3011 | Drive nominal ratingNCV · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 3012 | 3012 | Drive line voltageVCAL · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 3017 | 3017 | Nominal drive currentINV |
uint16 | 1 | A | 0.1 | R | Holding (FC03) |
| 3302 | 3302 | Drive software versionVDP |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 3301 | 3301 | Specific product numberSPN |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 6001 | 6001 | Modbus drive addressADD · 0 = OFF (broadcast only), 1 to 247 = assigned. Factory setting OFF. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 6003 | 6003 | Modbus baud rateTBR · 24 = 4800 bps, 28 = 9600 bps, 32 = 19200 bps, 36 = 38400 bps. Factory setting 19200 bps. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 6004 | 6004 | Modbus frame formatTFO · 2 = 8O1, 3 = 8E1, 4 = 8N1, 5 = 8N2. Factory setting 8E1. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 6005 | 6005 | Modbus time-outTTO · Range 0.1 to 30 s. Factory setting 10.0 s (raw 100). Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | s | 0.1 | RW | Holding (FC03) |
| 12701 | 12701 | Communication scanner read word 1 addressNMA1 · Holds the Modbus address read into NM1. Factory setting 3201 (ETA). Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12702 | 12702 | Communication scanner read word 2 addressNMA2 · Factory setting 8604 (RFRD). Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12721 | 12721 | Communication scanner write word 1 addressNCA1 · Holds the Modbus address written from NC1. Factory setting 8501 (CMD). Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12722 | 12722 | Communication scanner write word 2 addressNCA2 · Factory setting 8602 (LFRD). Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12741 | 12741 | Communication scanner read word 1 valueNM1 · Factory setting: ETA value (NM1), RFRD value (NM2), 0 (NM3 and NM4). |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 12742 | 12742 | Communication scanner read word 2 valueNM2 |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 12743 | 12743 | Communication scanner read word 3 valueNM3 |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 12744 | 12744 | Communication scanner read word 4 valueNM4 |
uint16 | 1 | 1 | R | Holding (FC03) | |
| 12761 | 12761 | Communication scanner write word 1 valueNC1 · Factory setting: CMD value (NC1), LFRD value (NC2), 0 (NC3 and NC4). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12762 | 12762 | Communication scanner write word 2 valueNC2 |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12763 | 12763 | Communication scanner write word 3 valueNC3 |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 12764 | 12764 | Communication scanner write word 4 valueNC4 |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 8001 | 8001 | Save configurationSCS · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 8002 | 8002 | Restore configurationFCS · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 3105 | 3105 | Low speedLSP · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 3104 | 3104 | High speedHSP · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 3103 | 3103 | Top frequencyTFR · Range 10 to 400 Hz. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 9622 | 9622 | Motor thermal currentITH |
uint16 | 1 | A | 0.1 | RW | Holding (FC03) |
| 3015 | 3015 | Basic frequencyBFR · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 9601 | 9601 | Nominal motor voltageUNS · Range 100 to 480 V. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | V | 1 | RW | Holding (FC03) |
| 9602 | 9602 | Nominal motor frequencyFRS · Range 10 to 400 Hz. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 9603 | 9603 | Nominal motor currentNCR · Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | A | 0.1 | RW | Holding (FC03) |
| 9604 | 9604 | Nominal motor speedNSP · Range 0 to 24000 rpm. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | rpm | 1 | RW | Holding (FC03) |
| 9606 | 9606 | Rated motor cos phiCOS · Range 0.5 to 1. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 0.01 | RW | Holding (FC03) | |
| 9607 | 9607 | Motor control typeCTT · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 9623 | 9623 | IR compensationUFR · Range 25 to 200 %. |
uint16 | 1 | % | 1 | RW | Holding (FC03) |
| 9625 | 9625 | Slip compensationSLP · Range 0 to 150 %. |
uint16 | 1 | % | 1 | RW | Holding (FC03) |
| 3102 | 3102 | Switching frequency rangeSFR · Range 2 to 16 kHz; factory setting 4 kHz (raw 40). |
uint16 | 1 | kHz | 0.1 | RW | Holding (FC03) |
| 9201 | 9201 | Current limitationCLI |
uint16 | 1 | A | 0.1 | RW | Holding (FC03) |
| 9001 | 9001 | Acceleration time (between 0 and FRS)ACC · Range 0 to 999.9 s; factory setting 3.0 s (raw 30). The parameters file lists the unit as 0.1 s (range 0 to 999.9 s), so raw 13 would be 1.3 s. The only worked example in BBV28590 p. 14 writes 000D hex (13) and labels it ACC = 13 s, which does not match the parameters file; this map follows the parameters file and the example label is not relied on. Verify on the device. |
uint16 | 1 | s | 0.1 | RW | Holding (FC03) |
| 9002 | 9002 | Deceleration time (between FRS and 0)DEC · Range 0 to 999.9 s; factory setting 3.0 s (raw 30). |
uint16 | 1 | s | 0.1 | RW | Holding (FC03) |
| 9012 | 9012 | Acceleration time 2AC2 · Range 0 to 999.9 s; factory setting 5.0 s (raw 50). |
uint16 | 1 | s | 0.1 | RW | Holding (FC03) |
| 9013 | 9013 | Deceleration time 2DE2 · Range 0 to 999.9 s; factory setting 5.0 s (raw 50). |
uint16 | 1 | s | 0.1 | RW | Holding (FC03) |
| 11201 | 11201 | Stop modeSTT · Enumeration. Writable only when the drive is not in Operation enabled or Quick stop active state (access R/WS in the source). |
uint16 | 1 | 1 | RW | Holding (FC03) | |
| 11111 | 11111 | Jog frequencyJGF · Range 0 to 10 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11410 | 11410 | Preset speed 2SP2 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11411 | 11411 | Preset speed 3SP3 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11412 | 11412 | Preset speed 4SP4 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11413 | 11413 | Preset speed 5SP5 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11414 | 11414 | Preset speed 6SP6 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11415 | 11415 | Preset speed 7SP7 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11416 | 11416 | Preset speed 8SP8 · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11301 | 11301 | Skip frequencyJPF · Range 0 to 400 Hz. |
uint16 | 1 | Hz | 0.1 | RW | Holding (FC03) |
| 11920 | 11920 | PID internal referenceRPI |
uint16 | 1 | % | 0.1 | RW | Holding (FC03) |
| 11941 | 11941 | PID proportional gainRPG · Range 0.01 to 100. |
uint16 | 1 | 0.01 | RW | Holding (FC03) | |
| 11942 | 11942 | PID integral gainRIG · Range 0.01 to 100. |
uint16 | 1 | 0.01 | RW | Holding (FC03) | |
| 11943 | 11943 | PID derivative gainRDG · Range 0 to 100. |
uint16 | 1 | 0.01 | RW | Holding (FC03) |
Scale is the number to multiply the raw value by to get the unit.
Open in Modbus Poll
- Download the Modbus Poll blocks file.
- Open Modbus Poll, connect to the device and set its unit ID. The manual does not state the word order for 32-bit values. Check one known value (a voltage or a counter) and switch the setting if it reads wrong.
- In the blocks panel on the right, click Import CSV and pick the file. CSV import is a Pro feature. Without Pro, Modbus Poll polls the first 20 values of your blocks.
- The wire addresses are already in the file, so there is no 0-based or 1-based conversion to do.
Once the values look right, export the tag list to Ignition, Kepware, Node-RED, Home Assistant or Voltrus SCADA.
Source and accuracy
Manufacturer document: ATV12 Modbus Communication Parameters addresses (BBV51917) (www.eurotherm.com)
BBV51917 ATV12 Communication Parameters V1.4IE05 (Excel file; copy hosted by a third party on eurotherm.com, no copy on download.se.com or se.com could be found; the Schneider document page was unavailable when checked), read together with the vendor-hosted Modbus Communication Manual BBV28590 06/2012, sheets Parameters, Enumerations and Registers; BBV28590 pp. 9, 10, 14, 19, 20. Read on 2026-10-24.
Also used: Altivar 12 Modbus Communication Manual BBV28590 06/2012 (download.se.com)
Addresses, types, units and scale are taken from the document above. Names and descriptions are written by Voltrus. Firmware versions can differ, so confirm a value on your own device before you rely on it.
Found a mistake? Report it by email with the register address and the manual page.
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