B-63983EN/02 10.STEP SEQUENCE FUNCTION
- 1017 -
10.8 TIME MONITOR FUNCTION
The time monitor function reports an error if a step sequence
continues to be active for more than a specified monitor time. For
each of up to eight steps, a monitor time can be set.
If the active state of a step lasts for more than a specified time, the
processing described below is performed.
On the step sequence execution state display screen, "OVER" is
indicated for a step number whose monitor time has been exceeded.
The ladder just continues running.
(1) The bit of R9118 corresponding to a monitor timer number is
turned on. By monitoring R9118 with the ladder program, error
processing can be programmed.
Timer No. Corresponding bit
1 R9118.0
2 R9118.1
3 R9118.2
4 R9118.3
5 R9118.4
6 R9118.5
7 R9118.6
8 R9118.7
(2) The PMC alarm screen displays the following message:
"ER48 STEP SEQUENCE TIME OVER(xxH)"
xx represents the value of R9118 in hexadecimal.