Alert Output Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

1.9

Alert Output Function

This function outputs an alert when the digital value is larger than the alert output upper limit value or is smaller than the alert
output lower limit value.
CH1 Alert output upper limit value
CH1 Alert output lower limit value
Alert output upper flag
Alert output lower flag
Alert output signal (XE) OFF
Alert output clear request (YE) OFF
Operation
■Alert output notification
When 'CH1 Digital value' (Un\G460) is larger than 'CH1 Alert output upper limit value' (Un\G510) or is smaller than 'CH1 Alert
output lower limit value' (Un\G512), either of 'Alert output upper limit flag' (Un\G36) or 'Alert output lower limit flag' (Un\G37),
'Alert output signal' (XE), and the ALM LED turn on to output an alert. In addition, an alarm code (080H or 081H) is stored
in 'Latest alarm code' (Un\G2) when an alert has occurred.
When an alert has occurred, the set value of the alert output upper limit value or the alert output lower limit value is used as
the digital value for the D/A conversion.
When 'CH1 Digital value' (Un\G460) is changed to a value smaller than 'CH1 Alert output upper limit value' (Un\G510) and
larger than 'CH1 Alert output lower limit value' (Un\G512) after an alert has occurred, the analog output value returns to a
normal value. However, 'Alert output upper limit flag' (Un\G36), 'Alert output lower limit flag' (Un\G37), and 'Alert output signal'
(XE) are not cleared.
1 FUNCTIONS
28
1.9 Alert Output Function
Digital value
20000
-2000
OFF ON
OFF
ON
Controlled by the D/A converter module
Digital value
Analog output value
OFF
ON
OFF ON
ON OFF