550 743 02

 

Notification on analogue channels

Notification is a means of raising a flag when a selectable event occurs.

 

Notification on analogue channels can be selected as

  • Notification on Level Crossing.
  • Notification on DeltaLevel.
  • No load / Wire broken.
  • Change in Channel_Error.Actual.

 

 

Notification on limit crossing can be enabled to create a flag when the AnalogIn value crosses the defined limits while increasing and/or decreasing.

Two limits can be defined per channel: Level1 and Level2.

 

 

 

Notification on DeltaLevel can be enabled to create a flag, when the AnalogIn value has changed by more than a certain level.

DeltaLevel defines by how much a measured value needs to change either positively or negatively (deviate), compared to the last DeltaLevel Notification value, for a new notification to be made.

 

No load / Wire broken, when using the analogue channels in 4–20 mA mode, a current monitor can be enabled to make a notification if the current drops below 3 mA.

 

(See also: ChConfig.EnableNotification)

 

Related Topics

Limit alarms

Signal out of range alarms

Application note for PD 640 (mA)

Application note for PD 641 / 643 (Pt100 / Pt 1000)    

Application note for PD 642 / 643 (mV / thermocouple)

Analogue modules