Danfoss VLT Flow Drive FC 111 Design Manual page 121

VLT® Flow Drive FC 111
Design Guide
Field name
Quantity of coils HI
Quantity of coils LO
Error check (CRC)
8.10.4 Force/Write Multiple Coils (0F hex)
Description
This function forces each coil in a sequence of coils to either on or off. When broadcasting, the function forces the same coil referen-
ces in all attached followers.
Query
The query telegram specifies the coils 17–32 (speed setpoint) to be forced.
Coil addresses start at 0, that is, coil 17 is addressed as 16.
Table 74: Query
Field name
Follower address
Function
Coil address HI
Coil address LO
Quantity of coils HI
Quantity of coils LO
Byte count
Force data HI (Coils 8–1)
Force data LO (Coils 16–9)
Error check (CRC)
Response
The normal response returns the follower address, function code, starting address, and quantity of coils forced.
Table 75: Response
Field name
Follower address
Function
Coil address HI
Coil address LO
Quantity of coils HI
Quantity of coils LO
Danfoss A/S © 2021.04
Example (hex)
00
01
–
N O T I C E
Example (hex)
01 (drive address)
0F (write multiple coils)
00
10 (coil address 17)
00
10 (16 coils)
02
20
00 (reference = 2000 hex)
–
Example (hex)
01 (drive address)
0F (write multiple coils)
00
10 (coil address 17)
00
10 (16 coils)
RS485 Installation and Set-up
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