I’m trying to do some testing with MQTT, I have a Maple Systems HMI screen that is set up to publish and subscribe to topics using mqtt protocol.
I have a very simple test screen in Ignition with a single “numeric text box”. Now I do think I have all of the connection setup correct because when I input a value on the HMI 12.56(Example) the numeric text box gets updated.
My problem is when I make a change in the Numeric Text box and it tries to write back to the hmi - ignition will give me a “Write error” access denied.
I have set my security zone for the cirrus link MQTT modules to readwriteedit for all 3 modules.
Is there something simple I may be missing.