--- title: "Connecting to PLC-5" --- # Connecting to PLC-5 > >
:::info ASCII data types from a PLC-5 are not supported by the Allen-Bradley PLC-5 driver ::: ## Connect to a Device 1. Go to the **Configure** section of the Gateway webpage. 1. Scroll down and select **OPC-UA Server > Devices**. 1. On the **Devices** page, find the blue arrow and click on **Create new Device**. 1. On the **Add Device Step 1: Choose Type** page, select **Allen-Bradley PLC-5**, and click **Next**. 1. On the **New Device** page, leave all the default values and type in the following fields: + Name: **PLC-5** + Hostname: type the **IP address** for the PLC 1. Click **Create New Device**. The **Devices** page is displayed showing the **PLC-5** device is added to Ignition. The **Status** will show as Disconnected and then Connected. 1. 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. ![](img.png) ## Device Connection Settings The **General** settings are common to all Allen Bradley devices, and the **Connectivity** settings are device dependent. ### General Settings |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.| ### Connectivity Settings |Name|Description| |:---|:---| |Hostname|The Hostname value is the IP Address of the PLC-5 processor.The protocol that the PLC-5 processor supports is automatically detected. It will use either CSP protocol on port 2222 (0x8AE) or EthernetIP protocol on port 44818 (0xAF12).| |Communication Timeout|After sending a request to the PLC-5 processor, the Communication Timeout setting is the amount of time in milliseconds to wait for a response before treating it as a failure.| |Browse Cache Timeout|When the data table layout is read from the PLC-5 processor, the Browse Cache Timeout value is the amount of time in milliseconds to cache the results.| |Connection Path|The Connection Path value is used to define the route of the PLC-5 processor to connect to. Currently routing through the ControlLogix Ethernet Communication Interface Module (1756-ENET) to the ControlLogix Data Highway Plus-Remote I/O Communication Interface Module (1756-DHRIO) and on to a PLC-5 processor of the DH+ network is supported. For a more in depth explanation of connection paths, see [Allen Bradley Connection Paths Explained section](opc-ua-and-device-connections\allen-bradley-ethernet\allen-bradley-ethernet.md#allen-bradley-connection-paths-explained).| ### More Information On Connection Path The Connection Path format contains 4 numbers separated by commas. The first number is always 1 and tells the 1756-ENET module to route through the backplane. The second number is the slot number of the 1756-DHRIO module of the DH+ network the PLC-5 processor is connected to. The third number is the channel of the 1756-DHRIO module that the PLC-5 processor is connected to. Use 2 for channel A and 3 for channel B. The final and fourth number is the DH+ node number. This number is in octal and is the same as configured in the PLC-5 processor. See the **ControlLogix Ethernet Communication interface Module** User Manual for more information. Connection Path Format: `1,<1756-DHRIO slot number>,<1756-DHRIO channel>,` The valid range for the 1756-DHRIO slot number is between 0 and 16 but depends on the chassis size. The 1756-DHRIO channel is either 2 for channel A or 3 for channel B. The DH+ node number range is from 00 to 77 octal. ### Supported PLC-5 Connection Methods + PLC-5 L/20E, L/40E, L/80E direct + All PLC-5 processors connected through DH+ via the 1756-DHRIO module.