When The Alm Led Turns On Or Flashes - Mitsubishi Electric MELSEC iQ-R User Manual

When the ALM LED turns on or flashes

When turning on
Check item
Check whether any warning has been issued.
When flashing
Check item
Check whether any input signal error has occurred.
Action
Check 'Warning output flag (Process alarm upper limit)' (Un\G36), 'Warning
output flag (Process alarm lower limit)' (Un\G37), 'Warning output flag (Rate
alarm upper limit)' (Un\G38), and 'Warning output flag (Rate alarm lower limit)'
(Un\G39).
Take actions described in the list of alarm codes.
Page 165 List of Alarm Codes
Action
Check 'Input signal error detection signal' (XC) or 'Input signal error detection
flag' (Un\G40).
Take actions described in the list of alarm codes.
Page 165 List of Alarm Codes
3.3 Troubleshooting by Symptom
3 TROUBLESHOOTING
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