MQTT Engine and MQTT Transmitter Data Mismatch

[xinru.tey]

@xinru.tey

The client side consists of Ignition Edge running inside APE with MQTT Transmission enabled.

On the server side, there is an Ignition Server with MQTT Engine and MQTT Distributor / Broker.

When a value is changed from Perspective on the server, the value is written to MQTT Engine. MQTT Engine then publishes the updated value through the MQTT Distributor / Broker. The client-side Ignition Edge receives the updated value through MQTT Transmission and updates the local Edge tags or PLC values.

The communication also works in reverse. When a value changes on the client side, Ignition Edge MQTT Transmission publishes the value to the MQTT Distributor / Broker, and MQTT Engine on the server receives and updates the corresponding server tag.

For now, the MQTT client receives the change correctly, but the MQTT Engine tag remains unchanged. if I restart the tag or manually change the tag value, it starts functioning normally again.

How to solve it?

We are using MQTT Distributor/Engine/Transmitter version 4.0.34

Ignition Version 8.1.48

Does anyone face the same issue here?