To connect Ignition to an Allen-Bradley CompactLogix device

Go to the Configure section of the Gateway webpage.
Scroll down and select OPC-UA > Devices.
On the Devices page, find the orange arrow and click on Create new Device.
On the Add Device Step 1: Choose Type page, select Allen-Bradley CompactLogix, and click Next.
On the New Device page, leave all the default values and type in the following fields:
Name: CompactLogix
Hostname: type the IP address for the PLC, for example 10.20.4.55
Click Create New Device.
The Devices page is displayed showing the CompactLogix device is added to Ignition. The Status will show as Disconnected and then Connected.
To see all the tags, go to OPC Connections > Quick Client in the Configure section, on the OPC Quick Client page expand the CompactLogix folder and in the Global folder you can see all the tags.

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