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  3. CFW700

WEG CFW700 Modbus register map

Frequency inverter with Modbus RTU: monitoring, status and control words, speed and ramp settings, motor data and serial settings

  • Official
  • 67 registers
  • Modbus RTU
  • Revision 1 · 2026-11-10
  • Identity: firmware

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
19200 8N1 · 19200 baud, 8 data bits, none 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
67 holding registers
Groups
10
Translation tables
5
Revision
1 · 2026-11-10
Added
()
File
maps/weg/cfw700.mbmap.json · 15 KB · history
SHA-256
e28d6cc1e87a0f15bfe0f73ddd11feee9246f9cd8cc85852383b5fca0b3b8dac
Manufacturer
weg.net

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Registers
RoleRegisterAddressTypeValues
Firmware Software version holding 23 uint16

Sources and notes

Source: WEG CFW700 Modbus RTU User's Manual 10001123706/01 and CFW700 programming manual V2.3X 10001006640/05

  • Every parameter Pxxxx is the holding register of the same number (P0003 is register 3, address offset zero); the Modicon address is 40001 + the number.
  • Values travel as integers: a parameter shown as 1.5 A is sent as 15. The scales follow the decimal places of the programming manual.
  • Only the parameters used most in monitoring and control are listed, not the full parameter list of the programming manual. Other parameters can be added in the same way (register = parameter number).
  • P0001 and P0002 are shown in rpm with the factory units; they follow the scale and unit chosen in the display parameters.
  • P0682 and P0683 can be written only through the serial interface, and the drive must use serial as command and reference source (P0105, P0220 to P0228).
  • Baud rate, parity and address defaults follow the factory values in the Modbus manual (P0308 = 1, P0310 = 1, P0311 = 0); the drive can be set to 57600 bit/s.
  • Written from the manufacturer's documents; not tested on a device. The Modbus manual is dated 2011 and the programming manual is V2.3X: newer firmware may add parameters.
AreaAddressNameTypeAccessUnitScaleDescription
HR 1 uint16 R rpm P0001
HR 2 uint16 R rpm P0002
HR 3 uint16 R A ×0.1 P0003
HR 4 uint16 R V P0004
HR 5 uint16 R Hz ×0.1 P0005
HR 6 uint16 R P0006
HR 7 uint16 R V P0007
HR 9 int16 R % ×0.1 P0009
HR 10 uint16 R kW ×0.1 P0010
HR 11 uint16 R ×0.01 P0011; cos phi of the output
HR 12 uint16 R P0012; bit field DI1 to DI8, see the programming manual
HR 13 uint16 R P0013; bit field DO1 to DO5, see the programming manual
HR 14 uint16 R % ×0.01 P0014
HR 15 uint16 R % ×0.01 P0015
HR 18 int16 R % ×0.01 P0018
HR 19 int16 R % ×0.01 P0019
HR 23 uint16 R ×0.01 P0023
HR 30 int16 R °C ×0.1 P0030
HR 34 int16 R °C ×0.1 P0034
HR 36 uint16 R rpm P0036
HR 37 uint16 R % P0037; a fault occurs at 100 %
HR 42 uint16 R h P0042
HR 43 uint16 R h ×0.1 P0043
HR 44 uint16 R kWh P0044; calculated indirectly, not for billing
HR 45 uint16 R h P0045
HR 48 uint16 R P0048; alarm number
HR 49 uint16 R P0049; fault number
HR 100 uint16 RW s ×0.1 P0100
HR 101 uint16 RW s ×0.1 P0101
HR 121 uint16 RW rpm P0121
HR 133 uint16 RW rpm P0133
HR 134 uint16 RW rpm P0134
HR 308 uint16 RW P0308; changed only with the motor stopped
HR 310 uint16 RW P0310; changed only with the motor stopped
HR 311 uint16 RW P0311; changed only with the motor stopped
HR 313 uint16 RW P0313; changed only with the motor stopped
HR 314 uint16 RW s ×0.1 P0314; 0 disables; changed only with the motor stopped
HR 316 uint16 R P0316
HR 400 uint16 RW V P0400
HR 402 uint16 RW rpm P0402
HR 403 uint16 RW Hz P0403
HR 680 bool bit 4 R 1 = fast stop command being executed
HR 680 bool bit 5 R 1 = second ramp (P0102/P0103) in use
HR 680 bool bit 6 R 1 = drive cannot be enabled (self-tuning, start-up routine, incompatible setting, etc.)
HR 680 bool bit 7 R 1 = alarm condition
HR 680 bool bit 8 R 1 = running or ramping
HR 680 bool bit 9 R 1 = general enable on
HR 680 bool bit 10 R 1 = forward, 0 = reverse
HR 680 bool bit 11 R
HR 680 bool bit 12 R 1 = remote, 0 = local
HR 680 bool bit 13 R
HR 680 bool bit 15 R 1 = fault condition
HR 680 uint16 R P0680; full 16-bit word
HR 681 int16 R P0681; 8192 = synchronous speed, negative = reverse
HR 682 uint16 RW P0682; full 16-bit word; writable only via serial, which must be the command source (P0105, P0220 to P0228)
HR 682 bool bit 0 RW 1 = run, 0 = stop by ramp
HR 682 bool bit 1 RW 1 = enable, 0 = disable
HR 682 bool bit 2 RW 1 = follow the reference sign, 0 = opposite
HR 682 bool bit 3 RW
HR 682 bool bit 4 RW 1 = remote, 0 = local
HR 682 bool bit 5 RW 1 = use the second ramp
HR 682 bool bit 6 RW not allowed in V/f or VVW control
HR 682 bool bit 7 RW 1 = reset a fault
HR 683 int16 RW P0683; 8192 = synchronous speed, negative = reverse; serial must be the reference source (P0221, P0222)
HR 695 uint16 RW P0695; bit 0 to 4 set DO1 to DO5 when their function is P0695 content
HR 696 int16 RW P0696; 32767 = 100 % of the output
HR 697 int16 RW P0697; 32767 = 100 % of the output

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