ABB COMMANDER 500 - Force Multiple Coils

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5 MODBUS FUNCTIONS…

5.6 Force Multiple Coils – Function Code 15

5.6.1 Force Multiple Coils Query

This message is used to force up to 32 coils at a time to the ON or OFF state. When used with slave

address zero (broadcast mode) all slave controllers force the selected coils to the state(s) specified.

Note. To write to a coil, its offset address (one less than the register number) must be used,

e.g. to write to coil 39, the offset address 38 (26H) is transmitted.

Example. Force coil 39 to ON (Select manual mode) and coil 40 to OFF (Select Local Set Point

mode).

5.6.2 Force Multiple Coils Response

The Force Multiple Coils Response confirms slave identification, function code, starting register

address and quantity only.

Example

sserddAnoitcnuF

tesffOtratSlioCslioCfo.oN

dleiFkcehCrorrE

)61CRC(

hgiHwoLhgiHwoL

10F000620020531C

sserddAnoitcnuF

tesffOtratSlioCslioCforebmuN

etyB

tnuoC

ataD

lioC

sutatS

kcehCrorrE

)61CRC(dleiF

hgiHwoLhgiHwoL

10F00062002010106109

ABB COMMANDER 500 - Force Multiple Coils - Function Code 15