Siemens SIMATIC S7 CP340 Programming Manual page 46

5 MODBUS RTU Protocol communication
Fig. 80: Before and after inserting Dongle
5.2.2 Configuration
1. Open the project ptp created above, and right-click the project name, select
Insert New Object->SIMATIC 300 Station to change the station name to CP341
Modbus-M.
Fig. 81: Insert S7-300 station
2. Double-click Hardware to enter the hardware configuration interface and insert
RACK, CPU315-2DP and CP341.
CP340/CP341/CP440/CP441 Communication and Programming
Entry-ID: 88867653, V1.0, 02/2014
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