DP840 holding last known good value
I am facing an issue with a DP840 Module with TU830 termination unit, connected to a Flow Transmitter.
Whenever the Flowmeter goes into a fault state the DP840 holds the last known good value and sends the value across. Is there any way to reset and stop DP840 showing the last good value as it creats confusion on the graphics.
Thanks in advance.
Voted best answer
In hardware configuration of DP840 -> go to tab Settings.
For your cannel change ISP Control Pulse to "Use ISP Value", then set ISP Value Frequency to 0.0 (or to the value which you need to be shown at error status of the channel).
ISP = Input Set as Predefined. The ISP function will be activated on channel error.