Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 163)

Error Reporting
Chapter 7
7Ć8
Local and Remote Error Bits
As a diagnostic tool, these bits are useful to identify the rung that caused
an 80- or 90-series error.
The remote error code corresponds with STS Code 03.
The remote error bit indicates that a message was received from the
remote station that some condition there prevented successful execution
of the message. When a remote error is indicated, there is probably
nothing wrong with the local station or with the highway cable. The
remote station is most likely working properly. The first causes to
investigate are indicated by the various codes.
Setting of a local error bit indicates that the local module is not able to
confirm delivery of the command message to the remote station or that the
command rung timed out before the reply message arrived. A local error
does not necessarily mean that the message was not received at its
destination or that it will not be executed.
This section describes error codes that the 1775-KA module will report to
the PLC-3 application program. Errors are of three types:
Local
Reply
Remote
Local errors are those that the 1775-KA module encounters while trying
to execute one of its own message procedures.
Reply errors are those that the 1775-KA module inserts in the STS byte of
a reply that it generates in response to a command from a remote station.
Remote errors are those that are returned to the 1775-KA module in a
reply message from a remote Data Highway station.
Important: The frame of reference in this chapter is the 1775-KA. All
error codes listed here result from some action of a 1775-KA.
Error Codes for 1775ĆKA