Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 62

Setting the number of alert delays
Set the number of times to implement sampling to judge an alert. By setting the number of times to implement sampling, when
the temperature process value (PV) stays within the alert range after the temperature process value (PV) has reached the
alert set value until the number of times to implement sampling exceeds the number of alert delays, an alert occurs.
■Setting method
Configure the settings as described below.
[Navigation window]  [Parameter]  Target module  [Module Parameter]  [Application Setting]  [Alert setting] 
[Number of alert delay]
Ex.
When the alert mode has been set to "Upper Limit Input Alert"
When 5 (times) is set as the number of alert delays, the system does not create an alert when the number of times to
implement sampling is 4 times or less.
Temperature process value (PV)
Alert set value
Set value (SV)
Number of samplings
Alert status
Alert mode and related settings
The following table shows the alert modes and the related settings described in this section.
Enabled or ON: , disabled or OFF: 
Alert
Input alert Upper limit input alert
Lower limit input alert
Deviation alert Upper limit deviation alert
Lower limit deviation alert
Upper/lower limit deviation
alert
Within-range alert
4 FUNCTION
60
4.29 Alert Function
x3
Non-alert status
Alert dead band Number of alert
setting delay
 
 
 
 
 
 
Time
x5
Alert status
Alert with wait






Alert with re-wait





