Micro820 Modbus mapping

Hi all, I am trying to connect Allen Bradley Micro820 to my ignition with Modbus TCP
Do you know how I can Config Modbus mapping
I have 4 digital input and 4 digital output in the device nothing else

would you please help if you can?

You don’t have to use the map…

I don’t suppose the micro820 shows the modbus equivalent in its ladder editor…

youll have to map the plc tags to ingition tags using an opc path

https://docs.inductiveautomation.com/display/DOC81/Modbus+Addressing

1 Like

Here’s a great place to start - Modbus

1 Like

If your are just trying to get the PLC “Tags” into Ignition, I can recommend another easy and efficient way to get that job done.

By using a Maple Systems MQTT Gateway at a cost of $390.00 USD. you can directly communicate with Ignition. If you setup Sparkplug B it works flawlessly!

1 Like

Yes its work thanks