Rockwell Automation 57C329 Remote I/O Communications, AutoMax - Manual (Page 81)

5Ć5
OVERRUN ERRORS is the total number of message overrun
errors that have occurred since the last reset of the drop. This
number should ideally remain equal to zero.
ABORTERRORS is the total number of message abort errors that
have occurred since the last reset of the drop. This number
should ideally remain equal to zero.
MESSAGES SENTis the total number of messages transmitted
by the drop. While the line is inactive, this value for the slave
drops will remain unchanged. While the line is active, this value
will constantly increase.
LASTRESETis a nonĆvolatile register that contains the cause of
the latest software reset. Upon initial powerĆup, the zz"
parameter should be equal to NONE". If no software restarts
occur during operation, the zz" parameter will remain NONE."
The other possible values of zz" are:
LE reset due to excessive line errors of any kind (Receive
Timeouts, CRC, Overrun, Abort).
UI reset due to Unexpected Init" request message.
PF reset due to a Power Fail" interrupt that occurred while
the line was active. Input power has to remain valid (i.e.,
the power failure must be a spurious interrupt, line notch or
line dip) for this code to be stored and displayed.
Pn reset due to a port (rail) fault detected during the most
recent port I/O update cycle. n" equals the port number
(0Ć3) that experienced the fault. (M/N 57C328 and
M/N 57C330 only).
PORTRETRIES (P0, P1, P2, P3) is the number of port operations
retried on each port. These values will increase to 255 and then
roll over to 0. Ideally, these values should remain equal to zero.
The five error parameters (RECEIVE TIMEOUTS, CRC, OVERRUN,
ABORT, and PORT RET RIES) indicate high speed line integrity (or
lack of it). A few errors may accumulate over a period of time, such
as hours or days; but when these parameter values increase
consistently over a period of seconds, there is a problem with
integrity. See section 6.5 for the troubleshooting procedure.
In addition to the above status information, the Status command will
display the I/O configuration of the local drop. The following column
header will be displayed:
PORTREGISTER I/O