ControlLogix PLCs - Communication Settings
- Last UpdatedJul 08, 2025
- 3 minute read
The following tables show the settings for communication with a ControlLogix device. To establish communication with the device, configure the associated Board, Port and I/O Device in Plant SCADA Studio's Topology activity. If you use the Express Communications Wizard to connect to a device, these will be automatically configured for you using the settings outlined below.
Boards
|
Field |
Value |
|---|---|
|
Board Name |
A unique name (up to 16 alphanumeric character) per server for the computer board being used to connect with the device. This is used by Plant SCADA in the Ports settings. |
|
Board Type |
The type of board. Select ABCLX from the drop-down list (see Note below). |
|
Address |
This field must be "0" (zero). |
|
I/O Port |
Leave this field blank. |
|
Interrupt |
Leave this field blank. |
|
Special Options |
Leave this field blank. |
|
Comment |
Any useful comment. |
Note: Prior to version 3, the ABCLX driver (then known as the ABLogix driver) was installed as a TCP/IP board driver. Since version 3, the driver has been installed as an ABCLX-type board driver. If you are upgrading an existing project which used a version 2.x ABLogix driver, you will need to alter the board type in your existing project to ABCLX type.
Ports
|
Field |
Value |
|---|---|
|
Port Name |
A unique name (up to 16 alphanumeric character) for the computer port being used to connect with the device. This is used by Plant SCADA in the I/O Device settings. |
|
Port Number |
An integer value, unique to the board as defined in the Board name field. The Ethernet port needs no identification; however the Plant SCADA communication database requires a value in this field. |
|
Board Name |
The name of the board this port is attached to as defined on the Board settings. |
|
Baud Rate |
Leave this field blank. |
|
Data Bits |
Leave this field blank. |
|
Stop Bits |
Leave this field blank. |
|
Parity |
Leave this field blank. |
|
Special Options |
The IP address of the Ethernet module on the ControlLogix system PLC, appended with a forward slash and the slot number (zero based) of the backplane containing the controller CPU module, in the format: x.x.x.x[/n]. For example: "192.168.0.1/0" (See Note below.) |
|
Comment |
Any useful comment. |
Note: With the release of Version 3 of the ABCLX driver (formerly known as the ABLogix driver), the format used for the port definition in the Special Options field of the Ports settings has changed. If you are upgrading from Version 2.x (ABLogix), you will have to adjust the content of this field.
I/O Devices
|
Field |
Value |
|---|---|
|
Name |
A unique name (up to 16 alphanumeric character) for the I/O Device being identified. Each I/O Device must have a unique name in the Plant SCADA system. |
|
Number |
A unique number for the I/O Device (0–16383). Each I/O Device must have a unique number in the Plant SCADA system, (unless redundancy of the I/O Device is being used—See Configuring Redundancy for more information). |
|
Address |
Leave this field blank. Note: See Session Control for additional configuration information if you are using the Session Disable feature. |
|
Protocol |
This field must be "ABCLX". Default is "ABCLX" when the Plant SCADA Express I/O Device Wizard is used to complete these forms. |
|
Port Name |
This field must contain one of the names previously defined in the Port Names field of the Port settings. There must be only one I/O device per port. |
|
Comment |
Any useful comment. This is viewed in the Devices records database. |