CP340/CP341/CP440/CP441 Communication and Programming
Entry-ID: 88867653, V1.0, 02/2014
Fig. 78: Floating point number data processing
At this moment, the floating point number 40001 displayed in Modscan32
corresponds to the floating point number value of MD200, but MODBUS address
corresponds to DB1.DBD0.
Fig. 79: Floating point number data exchange
If CP341 module with RS422/RS485 interface is used, RS422/485 converter shall
be used when using computer serial port debugging program.
5.2 MODBUS Master protocol communication of CP341
5.2.1 Hardware catalog
Insert Dongle into CP341, and the Dongle and CP341 before and after Dongle is
inserted are shown in the Fig. below:
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