SLF

MODBUS FAULT

Schneider Electric · ATV32HD11N4 Variable Speed Drive

What does SLF mean?

This fault indicates an interruption in communication on the Modbus bus or a disconnected remote display terminal when [HMI command] (LCC) is enabled. If communication is not restored, remote control and monitoring capabilities will be lost, potentially leading to operational delays or safety issues if critical information cannot be exchanged with the control system.

Complete Troubleshooting Guide

  1. 1

    Check the physical Modbus communication bus for proper connections, termination, and cable integrity.

  2. 2

    Refer to the relevant Modbus product documentation for the drive for detailed troubleshooting guidelines and communication settings.

  3. 3

    Verify the link with the remote display terminal, ensuring it is securely connected if [HMI command] (LCC) is enabled and the terminal is intended for use.

Source: Schneider Electric Manual