I am running Ignition Edge 8.0.14 on a field PC and I am having issues with the tag quality.
I have the following set up: multiple field devices that are being read by a tag aggregartor (an SEL RTAC 3505) which is then read by Ignition Edge over Modbus TCP.
What happens is the following:
- One of the field devices looses comms with the tag aggregator
- The tag aggregator freezes the tag value and changes the tag quality to “invalid”
- Ignition Edge reads the tag value but even though the source tag has bad quality Ignition still shows the tag’s quality as “Good”
What I end up in the HMI is a numeric field with a frozen value withouth any indication that the quality of the tag is “Bad” which is very confussing for the user.
I have brieflly searched the user manual on how Ignition handles tag quality over Modbus but I wasn’t able to find anything of use.
Can someobody please let me know if there is a way to fix this or point me to the section of the documentation that can help me out.