CLX – General Information

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The CLX protocol is used for the communication with ControlLogiX / Compact Logix PLCs from Rockwell Automation.

The CLX protocol only works in conjunction with TCP/IP.

Read (Fetch active) and Write (Write active):

•	When communicating with CLX PLCs, it is generally possible to both read and write data over a single connection.

•	If default port 44818 is used, you only need to parameterize the connection on the device side. On the PLC side, no other settings are required.

NOTE:

To address item IDs, you need to specify their symbolic names in the CLX.

Alias browsing:

Once the CLX connection has been established, symbol information will be read from the PLC and displayed for selection in the corresponding dialog boxes.