I am trying to understand the limitations of the MQTT Distributor module. I understand it has a 50 device/client limit. What counts as a client/device? Would the Ignition server itself count as 1 device/client and then a separate MES system count as another device/client? Or is ot more complicated than that?
I believe every client counts. So the distributor itself running on the server without any other modules has 0 clients. Then when you install the MQTT engine, it will have a single client. Each MQTT transmission module either local or remote/edge will be another client. An MES system would probably have a single client also. If you need more than 50, they have a license that works with I believe 250 clients. Or if you're comfortable setting up your own MQTT server, there's plenty of free and open source brokers. I like EMQx, others use Mosquitto, and if you need one in the cloud, HiveMQ has a free version you can use for limited data/clients also.