Omron WIRED REMOTE I-O System Manual page 97

Error Codes and Monitoring
25103
88
To check for other errors, monitor 25100 and force-set the system. This
causes the next error word to be displayed.
Incremented one by the Error Check flag.
Indicates word setting of 31 (allocated
word 63) with word multiplier at 1.
To read the next error, reset the Error Check bit and then set it. If the leftmost
Master has an error, the following is displayed. Errors in the Slaves cannot
be read if there is an error in the Master.
This is an example program to stop PC operation if an error occurs in the
Remote Terminal allocated word 62 (word 30 under Master with word multi-
plier of 1). Operation can be restarted by first removing the cause of the er-
ror, then setting and resetting the Error Check bit until the contents of IR 251
goes to 0000, and finally clearing the error via the Programming Console.
25506
Master number
Remote I/O Error flag turns
MOV(21)
ON when there is an error.
251
The first step is thus to move
DM 0000
IR 251 to DM 0000.
The next error is read and
its word number displayed.
25100
If there is not another error,
all 0s will be displayed.
ANDW(34)
Bits 0 to 3 are masked.
#FFF0
DM 0000
DM 0000
Data from DM 0000 is
CMP(20)
compared with #3020.
DM 0000
#3020
If data matches, there is an
FALS(07)
error in the Unit allocated
01
word 62 and the CPU Unit
stops.
END(01)
Section 7-2