Siemens SIMATIC S7 CP340 - Page 69

5 MODBUS RTU Protocol communication
CP340/CP341/CP440/CP441 Communication and Programming
Entry-ID: 88867653, V1.0, 02/2014
69
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Fig. 123: Distribute communication parameters
Fig. 124: Communication monitor interface
Modbus slave address
Modbus initial
address and
length
Type of data accessed by
Modbus, viz. selecting
function code to be used
corresponds to Q0.0- Q2.7 in PLC