MODBUS FAULT

What does SLF mean?

This fault indicates an interruption in communication on the Modbus bus. It can also be triggered if a remote display terminal is enabled ([HMI command] (LCC) = [Yes] (YES), page 61) but is disconnected.

• Interruption or break in the Modbus communication bus cabling.
• Remote display terminal is disconnected while the [HMI command] (LCC) parameter (page 61) is set to [Yes] (YES).

Click steps to track your progress.

1. 1

   Check the physical connections and integrity of the Modbus communication bus.

2. 2

   Verify the link with the remote display terminal.

3. 3

   If a remote display is not used, ensure [HMI command] (LCC) is not set to [Yes] (YES).