Check list

Are the cables correctly soldered? All control lines have to be connected.
Are the settings of the communication processor correct? (default: with 19200 BAUD 8,n,1 protocol type)
When using serial communication, the Net address of the variable must be 0
Are the used datablocks defined correctly in the PLC?
Have you analyzed the error text file (which errors did occur)?
Send the project to support@copadata.com