Status Word For Serial I/O Commreqs - Emerson PACSystems RX3i User Manual

PACSystems™ RX3i and RSTi-EP CPU Reference Manual
GFK-2222AK
6.2.3

Status Word for Serial I/O COMMREQs

A value of 1 is returned in the COMMREQ status word upon successful completion of the
COMMREQ. Any other value returned is an error code where the low byte is a major error
code and the high byte is a minor error code.
Major Error Code Description
01 (01h)
12 (0Ch)
Serial I/O, SNP & RTU Protocols
Successful Completion
(this is the expected completion value in the COMMREQ status
word).
Local error —Error processing a local command.
The minor error code identifies the specific error.
02 (02h) COMMREQ command is not supported.
06 (06h) Invalid CPU memory type specified.
07 (07h) Invalid CPU memory offset specified.
08 (08h) Unable to access CPU memory.
12 (0Ch) COMMREQ data block length too small.
14 (0Eh) COMMREQ data is invalid.
15 (0Fh) Could not allocate system resources to complete
COMMREQ.
Section 6
October 2019
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