CP341 with modbus slave loadable driver

D

Thread Starter

dees talma

S7 CP341 with modbus slave accepts Modbus function 1, 2, 3, 16 etc. On function code 5 and 15 (write single coil / write multiple coils) we get the NAK reply with errorcode 4.

CP341 modbus mapping ('Projektierung') looks ok.
Our protocol works well on Modicon, GEfanuc etc.

Has anyone run into the same problem?

dees talma ([email protected])
 
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