How To Use The Output Open Alarm - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

How to use the output open alarm

The output open alarm (OOA) of loop tag data is designed for displaying the wire break detection signal as an alarm on the
loop tag FB of the output source when a disconnection is detected on the module FB on the output side.
The following shows a program example to feed back a signal from the module FB that is to detect a disconnection to the loop
tag FB that is to display it as an alarm.
Program example
Input the module access device on the output side (CH disconnection detection flag) to the tag item (OOA) of the loop tag
FB.
For the output open alarm (OOA), the disable alarm detection flag does not exist. Therefore, create a program separately to
enable or disable this alarm.
(1)
(2)
(1) User-created variable
(2) CH1 disconnection detection flag
(3) CH1 digital value
APPX
614
Appendix 3 Related Functions of Process
(3)