Version: 7.9

Connecting to ControlLogix v21

Connect to a Device

Go to the Configure section of the Gateway webpage.
Scroll down and select OPC-UA then Devices.
On the Devices page, find the blue arrow and click on Create new Device.
On the Add Device Step 1: Choose Type page, select Allen-Bradley Logix Driver, and click Next.
On the New Device page, leave all the default values and type in the following fields:
- Name: CLX
- Hostname: type the IP address for the PLC
Click Create New Device. The Devices page is displayed showing the ControlLogix device is added to Ignition. The Status will show as Disconnected and then Connected.
To see all the tags, navigate to the Configure section of the gateway, and click on Quick Client under OPC Connections. On the OPC Quick Client page, expand the folder matching the name used in step 5, and expand the Global folder to see available tags.

The General settings are common to all Allen Bradley devices, and the Connectivity settings are device dependent.

Name	Description
Name	The user-defined name for this Device. The name chosen will show up in OPC Item Paths and under OPC-UA Server > Devices of the Configure page of the Gateway. The Device Name must be alphanumeric.
Description	The user-defined description for the device. This is only used as a note to differentiate between devices.
Enable Device	Only devices that are enabled appear in Connections > Devices of the Status page of the Gateway and thus have their tags available for use.

Name	Description
Hostname	This is the IP Address of the ControlLogix Ethernet module (1756-ENET) to route through to connect a ControlLogix processor. EthernetIP protocol on TCP port 44818 (0xAF12) is used to communicate to ControlLogix processors.
Timeout	After sending a request to the ControlLogix processor, the Communication Timeout setting is the amount of time in msec to wait for a response before treating it as a failure.
Port	New in 7.9.14 The port number for the Logic driver device connection.
Max Concurrent Requests	The number of requests that Ignition will try to send to the device at the same time. Increasing this number can sometimes help with your request throughput, however increasing this too much can overwhelm the device and hurt your communications with the device.
Slot Number	The Slot Number value is the zero based ControlLogix chassis slot number of the ControlLogix processor to connect to.
Connection Path	The Connection Path value is used to define the route to connect to the processor. The Connection Path format contains 4 numbers separated by commas. The first number is always 1 and tells the Ethernet module to route through the backplane. The rest of the numbers vary by device type, for a more in depth explanation of connection paths, see Allen Bradley Connection Paths Explained section.

Name	Description
Automatic Rebrowse	Monitor for tag additions and UDT changes and automatically initiate a re-browse when detected. If this is disabled tags will only be browsed when connecting and reconnecting. (default: true)
CIP Connection Size	The CIP connection size to use during Forward Open requests. (default: 500)