Table 49: Query
(continued)
Field name
Example (hex)
Quantity of coils HI
00
Quantity of coils LO
10 (16 coils)
Byte count
02
Force data HI (Coils 8–1)
20
Force data LO (Coils 16–9)
00 (reference = 2000 hex)
Error check (CRC)
–
Response
The normal response returns the follower address, function code, starting address, and quantity of coils forced.
Table 50: Response
Field name
Example (hex)
Follower address
01 (drive address)
Function
0F (write multiple coils)
Coil address HI
00
Coil address LO
10 (coil address 17)
Quantity of coils HI
00
Quantity of coils LO
10 (16 coils)
Error check (CRC)
–
6.1.8
Danfoss FC Control Profile
6.1.8.1
Control Word According to FC Profile
Modbus Holding Register numbers for Input data – CTW and REF – and output data – STW and MAV – are defined in
Table 51: Modbus Holding Register Numbers for Input and Output Data
50000 input data
Frequency converter control word register (CTW)
50010 input data
Bus reference register (REF)
50200 output data
Frequency converter status word register (STW)
50210 output data
Frequency converter main value register (MAV)
The input/output data is also available in a lower holding register area:
Table 52: Lower Register Numbers for Input and Output Data
02810 input data
Frequency converter control word register (CTW)
02811 input data
Bus reference register (REF)
96
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