I am trying to connect Cimplicity with Allen Bradley SLC 5/03 through DF-1 protocol, and I get the error "READ: Data length check error". Does anybody know what happens?
It's tough without more information. Here are two debugging tips:
1) Check the '.out' and '.err' files in your \log directory for that protocol in that project. There may be useful information there - the
trick is understanding what those files are telling you.
2) Are there additional messages in the .log file? Sometimes these messages are symptoms where the problem is reported earlier.