Mitsubishi Electric MELSEC iQ-R Series User Manual page 48

• Normal pattern is detected
After starting the monitoring of sequential order once the start condition is satisfied, patterns that are satisfied in the order of
1st condition, 2nd condition and 3rd condition, are detected.
A trigger occurs when the condition is satisfied in the specified order.
Trigger
True
Start
condition
False
True
1st
condition
False
True
2nd
condition
False
True
3rd
condition
False
• Detect timeout
The condition until the next condition is satisfied, is monitored after one condition has been satisfied.
If the specified monitoring timeout time elapses and the next condition is not satisfied, this is considered as a timeout and
sequential monitoring ends, and it again waits for the start condition to be satisfied sequentially.
The time that can be specified in the monitoring timeout is 0.1 to 0.9 sec. and 1 to 32767 sec.
For the diagram below, it will be a monitoring timeout since the 2nd condition is not satisfied within the monitoring timeout time
after the 1st condition has been satisfied.
In addition, a trigger occurs at the same time as the timeout is detected.
Trigger
True
Start
condition
False
True
1st
condition
False
True
2nd
condition
False
When the setting value of monitoring timeout is smaller than that of the sampling interval, a timeout occurs.
1 FUNCTION
46
1.1 Data Logging Function
Order monitoring period
Occurrence
Occurrence
Monitoring timeout time set in the 1st Monitoring timeout time set in the 1st Monitoring timeout time set in the 1st
condition row condition row condition row
Monitoring timeout time set in the 2nd Monitoring timeout time set in the 2nd Monitoring timeout time set in the 2nd
condition row condition row condition row
Since the 1st, 2nd, and 3rd conditions were
sequentially established, the trigger occurs and the
order monitoring period ends.