Descartes OmniServer Checksum problem - IEC870 Protocol problem


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John Finn

I want to represent the checksum as a sum of the actual hex bytes in a message but i only seem to get the addittion of the ascii values- Can anyone help. Also would anyone have a solution to the error "Variable Width Sequence cannot be followed by another data sequence" that occurs when creating the respone part of a message that is of similar length to the request part? Thanks a million.