Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual User Manual

Page 198

Remote Error Codes Received from the

1773-KA Module

Appendix B

BĆ6

Error

Code

Type

Meaning
shutdown request to the local PLC-3 processor
For all PLC-3 read and write commands:
The local 1775-KA module has executed a
shutdown request.

For diagnostic status commands:
A backplane error occurred during
determination of the physical address of the
end of the ladder diagram program or of the
end of user memory. In polled mode, the
RS-232- C port has received a NAK, which
caused a system reset.
For all PLC/PLC-2 read and write commands:

Local PLC-3 backplane error (either memory
parity or timeout/disconnect). In polled mode,
the RS-232-C port has received a NAK, which
caused a system shutdown.
For all PLC-3 read and write commands:
Backplane error (memory parity or timeout/
disconnect). In polled mode, the RS-232-C port
has received a NAK, which caused a system reset.

For diagnostic read commands:
The command is an illegal request to read from the
1775- KA module's backplane window.
For PLC/PLC-2 read commands:
1. PLC-3 file does not exist.
2. PLC-3 file is too small.
3. PLC-3 file is more than 65,535 words long.

For PLC/PLC-2 bit write commands:
1. PLC-3 file does not exist.
2. Destination bits do not exist in PLC-3 file.
3. Length of PLC-3 file is greater than 65,535
words.
For PLC/PLC-2 word write commands:
1.The destination file does not exist in PLC-3
memory.
2.The destination word does not exist in the