SCADA Trends Issue


#1

Dear All

    Here In Plant i used the Trends for Digital Input and Output signals,these should come either rise up or rise down waves only,but here i am getting Ramp wave sometimes. Please tell me the reason why it is happening like this...<img src="/uploads/db0433/original/1X/e0c1c2e6ac9deb0ca1bf13ca6167fa8a22a166b6.jpg" width="690" height="472"><br/>

#2

Look for data points inside the ramp. If there are data points in the ramp then it is likely that you have some misunderstanding of the data you are trending. If there are no data points inside the ramp you may need to increase your scan time for the affected trend. It may be reading the data too slow and missing the transition.