This function forces each coil in a sequence of coils to either ON or OFF. When broadcast the function forces the same coil references in all attached slaves. .
The query message specifies the coils 17 to 32 (speed set-point) to be forced.
Field Name
Slave Address
Function
Coil Address HI
Coil Address LO
Quantity of Coils HI
Quantity of Coils LO
Byte Count
Force Data HI
(Coils 8-1)
6
Force Data LO
(Coils 10-9)
Error Check (CRC)
Response
The normal response returns the slave address, function code, starting address, and quantity of coiles forced.