B - error codes, Error codes – Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual User Manual

Page 193

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Appendix

B

BĆ1

Error Codes

This appendix describes the error codes that the 1775–KA module will
report. Errors are of three types:

local
reply
remote

The 1775–KA module generates local errors while trying to execute one
of its own message procedures. The module stores local error codes
under the user symbol ERROR. Possible local errors are listed in section
titled Local and Reply Error Codes.

The 1775–KA module generates reply errors while trying to respond to a
command message received from a remote Data Highway station. The
1775–KA module inserts the reply error code in the STS or EXT STS
bytes (Appendix A) of any reply message packet it transmits to a remote
station. For reply errors, there is a direct correlation between the error
codes in the STS and EXT STS bytes of reply messages and the error
codes reported at the remote station. The correlation is as follows:

General

Local Error Codes

Reply Error Codes

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