Vision controllers doesn't support MQTT, however, the UCR can connect to Vision controllers by Modbus as master, read values from PLC and publish (publish only) the desired data to MQTT.
1.Define MODBUS Slave parameters, pay attention to:
Slave ID (later can filter MQTT using the Slave ID)
Communication Period
Can define Tags and conditional Alarms
For 32 bits values (use Byte order 3,4,1,2), use the test button to see current value