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Connecting to PLC5/3 throuhg CH0
I succeed reading data from SLC5 and not from PLC5

I'm trying to read data from PLC5/3 through CH0 whit the DF1 protocol found here:

With SLC5/4 it work fine but not with PLC5 (it gives an unknown response). I tried a demo of a paid driver and failed too. I only succeeded with a demo from parijat where I can select the memory type to ASCII.

Can it be a configuration issue in the PLC5?

Any ideas how the problem can be solved?

Thank You.