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  2. Schneider Electric
  3. Altivar 212 (ATV212)

Schneider Electric Altivar 212 (ATV212) Modbus register map

HVAC variable speed drive with Modbus RTU on its RJ45 and open style ports

  • Official
  • 65 registers
  • Modbus RTU
  • Revision 1 · 2026-11-11

Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.

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Communication

Protocol
Modbus RTU
Unit ID
1
Serial
9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
0-based

Connection values are defaults: the device may be configured differently.

Map

Registers
65 holding registers
Groups
4
Translation tables
3
Revision
1 · 2026-11-11
Added
()
File
maps/schneider-electric/atv212.mbmap.json · 19 KB · history
SHA-256
bd1a7d05d039eeddb40178421b145a17e7ad23dedf98a5c296cff244e4b044ce
Manufacturer
se.com

Sources and notes

  • Altivar 212 Modbus communication manual · version S1A53844 09/2012
    Chapters 3 and 5: communication parameters, control, setpoint, monitoring, trip codes and I/O

Source: Schneider Electric, Altivar 212 Modbus communication manual S1A53844, 09/2012

  • Partial map: it holds the registers of the Modbus manual (communication parameters, command and setpoint words, monitoring values and trip codes). The other drive parameters are in the Altivar 212 programming manual (S1A53838), which gives their Modbus addresses, and are not mapped.
  • Addresses are the decimal numbers of the manual (16#FA00 = 64000), sent as they are: address_base is 0. Functions: 0x03 read, 0x06 write one, 0x10 write several, 0x2B/0x0E device identification, plus indirect block read and write.
  • Control: set CMOd (3) to 2 and FMOd (4) to 4, or set bits 14 and 15 of the command word to use Modbus whatever the settings. The command word and the setpoints are kept in RAM only and are lost at power-off. Examples from the manual: FA00 = 16#0400 run forward, 16#0600 reverse; frequency 80 Hz is FA01 = 8000.
  • Serial settings: 9600 or 19200 baud (factory 19200), no, even or odd parity (factory even), address 1 to 247 (factory 1), time-out factory 3 s. The stop bit is not configurable: the drive sends 2 stop bits and accepts 1 or 2. Baud rate and parity changes apply after a power cycle.
  • The manual lists the digital outputs status at the last trip (FE07) at 65030, the same as FE06; 16#FE07 is 65031 and is used here.
  • Output current, torque, voltages and exciting current are in 0.01 % of the rated values.
AreaAddressNameTypeAccessUnitScaleDescription
HR 3 uint16 RW 2 = communication
HR 4 uint16 RW 4 = serial communication reference
HR 64000 uint16 RW Bit 10 run, bit 9 reverse, bit 11 coast stop, bit 12 emergency stop, bit 13 reset, bit 14 setpoint priority, bit 15 command priority; 16#C400 run forward from Modbus, 16#C600 run reverse
HR 64032 uint16 RW Bit 1 energy reset, bit 12 over-current stall level change
HR 64001 uint16 RW Hz ×0.01 0 to the maximum frequency (FH)
HR 64019 uint16 RW rpm 0 to 24000; converted with the number of motor poles (F856)
HR 64080 uint16 RW Bit 0 relay FL, bit 1 relay RY; needs the relay function set to communication data
HR 64081 uint16 RW 0 to 1023 (10 bits); needs AO function set to 18 (communication data)
HR 2048 uint16 RW 0 = 9600, 1 = 19200
HR 2049 uint16 RW 0 = none, 1 = even, 2 = odd
HR 2050 uint16 RW 0 to 247; used on both ports
HR 2051 uint16 RW 0 = off, 1 to 100 s
HR 2055 uint16 RW 0 = RJ45, 1 = open style
HR 2080 uint16 RW Open style port; 0 = 9600, 1 = 19200
HR 2081 uint16 RW Open style port; 0 = none, 1 = even, 2 = odd
HR 2089 uint16 RW 1 = Modbus RTU
HR 2160 uint16 RW Indirect block selection
HR 2161 uint16 RW Indirect block selection
HR 2165 uint16 RW Indirect block selection
HR 2166 uint16 RW Indirect block selection
HR 2167 uint16 RW Indirect block selection
HR 2168 uint16 RW Indirect block selection
HR 2169 uint16 RW Indirect block selection
HR 64768 uint16 R Hz ×0.01
HR 64769 uint16 R Drive state bits: bit 1 tripped, bit 2 alarm, bit 3 MOFF, bit 9 reverse, bit 10 run, bit 12 emergency stop, bit 15 local
HR 64774 uint16 R Bit 0 F, bit 1 R, bit 2 RES, bit 7 VIA
HR 64775 uint16 R Bit 0 RY, bit 2 FL
HR 64834 uint16 R
HR 64841 uint16 R
HR 64656 uint16 R
HR 64657 uint16 R Bits: 0 overcurrent, 1 drive overload, 2 motor overload, 3 overheat, 4 overvoltage, 5 undervoltage, 7 undercurrent, 8 over-torque, 10 operation hours
HR 65024 uint16 R Hz ×0.01
HR 65025 uint16 R
HR 65026 uint16 R Hz ×0.01
HR 65027 uint16 R % ×0.01 Percent of the drive's rated current
HR 65028 uint16 R % ×0.01
HR 65029 uint16 R % ×0.01
HR 65030 uint16 R
HR 65031 uint16 R The manual lists 65030 for this register; 16#FE07 is 65031
HR 65040 uint16 R
HR 65041 uint16 R
HR 65042 uint16 R
HR 65043 uint16 R
HR 65044 uint16 R h ×0.01
HR 65045 uint16 R Hz ×0.01
HR 65046 uint16 R Hz ×0.01
HR 65048 int16 R % ×0.01
HR 65056 uint16 R % ×0.01
HR 65057 uint16 R % ×0.01
HR 65058 uint16 R Hz ×0.01
HR 65062 uint16 R %
HR 65063 uint16 R %
HR 65065 uint16 R kW ×0.01
HR 65072 uint16 R kW ×0.01
HR 65077 uint16 R 0 to 1023
HR 65078 uint16 R 0 to 1023
HR 65090 uint16 R
HR 65093 uint16 R
HR 65094 uint16 R
HR 65097 uint16 R
HR 65152 uint16 R h ×0.01
HR 65145 uint16 R Bit 0 fan life, bit 1 circuit board life, bit 2 main-circuit capacitor life, bit 3 user set
HR 65168 uint16 R rpm
HR 65142 uint16 R Wh
HR 65143 uint16 R Wh

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