Power Chart not showing loss of connection to Remote Tag Provider

Ignition
,
1

Hi everyone,

I’m currently troubleshooting a behavior in a distributed Ignition architecture and want to see if there’s a way for handling the powerchart when a data source goes offline.

The Setup:

  • Central Gateway: Full Ignition install hosting the main Perspective project.

  • Field : Ignition Edge nodes handling local OPC acquisition and acting as Remote Tag Providers (RTP) to the Central Gateway.

  • Historian: Data is being logged via the Edge nodes.

The Problem: When the Gateway Network connection between the Central Gateway and an Edge node drops, the Power Chart on the Central Gateway continues to display the last received value. The trend essentially "freezes".

From an operator's perspective, there is no clear visual indication that the data is stale/absent. A flat line for a temperature or pressure sensor could be misinterpreted as a stable process when, in reality, the data source is simply unavailable.

Any insights on how to prevent this would be greatly helpful.

Ignition Platform v8.1.47
Ignition Edge Platform v8.1.48
2

You should note what version of Ignition (Full & Edge) you are using.

3

Hi Ted,

Thanks

Ignition Platform v8.1.47
Ignition Edge Platform v8.1.48

Any input would be helpful.

4

This might be the answer your question:

The real solution is to properly configure and display alarms for “abnormal” conditions, such as bad tag quality, or an entire edge node offline.

5

Hi Duncan,

I’ve tried setting breakLine to true, and it works fine when the PC hosting Ignition is switched on. However, when I switch off the entire rig including the Ignition Edge and the devices connected to it, the graph still connects the values and appears to interpolate based on the last recorded value.

Let me know if there’s a way to prevent this so the line breaks correctly when the data source goes offline.