ABB ACS850 - Modbus register addresses for the DCU 16-bit profile

332 Control through the embedded fieldbus interface
 Modbus register addresses for the DCU 16-bit profile
The table below shows the Modbus register addresses and data with the DCU16-bit
communication profile.
Note: Only the least significant 16-bits of the drive 32-bit control and status words
can be accessed.
Register address Register data (16-bit)
400001 Control Word (LSW of 02.36 EFB main cw)
400002 Reference 1 (02.38 EFB main ref1)
400003 Reference 2 (02.39 EFB main ref2)
400004 Data in/out 1 (Drive parameter 58.35 Data I/O 1)
……
400015 Data in/out 12 (Drive parameter 58.46 Data I/O 12)
400051 Status Word (LSW of 02.37 EFB main sw)
400052 Actual value 1 (selected by parameter 50.01 Fb ref1 modesel)
400053 Actual value 2 (selected by parameter 50.02 Fb ref2 modesel)
400054 Data in/out 13 (drive parameter 58.47 Data I/O 13)
……
400065 Data in/out 24 (drive parameter 58.58 Data I/O 24)
400101
…409999 Register address (16-bit drive parameter) = 400000 + 100 × group +
index
Example: Modbus register address to drive parameter 03.18 is
400000 + 100 × 3 + 18 = 400318
Drive parameter access (32-bit drive parameter) = 420000 + 200 × group
+ 2
× index
Example: Modbus register address to drive parameter 01.27
420000 + 200
× 1 + 2 × 27 = 420254