Force Multiple Coils" Command (0X0F) - ICP DAS USA I-7242D User Manual

8.5

"Force Multiple Coils" Command (0x0F)

Forces each coil in a sequence of coils to either ON or OFF. The query
message specifies the coil references to be forced. The normal response
returns the slave address, function code, starting address, and quantity of
registers preset.
Frame
Coil Address (Hi)
Coil Address (Lo)
Quantity of Coils (Hi)
Quantity of Coils (Lo)
Query
Byte Count
Force Data (Coils: H-L)(L)
.....
Force Data (Coils: H-L)(H)
Coil Address (MSB)
Coil Address (LSB)
Response
Quantity of Coils (MSB)
Quantity of Coils (LSB)
I-7242D DeviceNet/Modbus RTU Gateway User's Manual, July 2006, Version 1.1
Field
Address of 1
Number of output coils
Number of data bytes=(number of output coils + 7) / 8
Byte swap="Swap 1 byte"
Data length=Value of the "Byte Count" field
Data location=Address in the gateway's "DO" memory
Address of 1
Number of output coils
I-7242D user manual
Description
st
output coil
st
output coil
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