text: <s>[INST] SMC-50 Underload Fault Reset Summary: Cannot reset Using PLC tag, but can reset using drive tab or keypadHello. I am having an issue with a SMC-50 Soft start. The drive has been added to the IO tree of an rslogix application and I can communicate to the drive and I can see status information and also set up certain parameters from the PLC. One thing I cannot do however is reset an underload fault using the clearfault output bit (which is automatically created when adding an SMC-50 addon profile) in ladder logic, however I can reset the fault if I either go on to the SMC-50 drive tab in the PLC application and “clear faults” or from the in built key pad on the front of the MCC. I don’t have to set anything up within the SMC-50 using components workbench do i? I was able to set fault enable outputs directly from the PLC, I just cannot clear a fault using the logicCommands_Clearfault tag. What is the difference in the soft starter between using the “logicCommands_Clearfault tag” output tag or selecting “clear faults” on the alarm section of the drive tab in the IO tree of the plc application. Any help would be appreciated. Note: using 20-COMM-ER module on the drive to communicate to the PLC, no set up using components work bench on the drive itself [/INST] How long are you setting the P2_046_MCC:O.LogicCommand_ClearFault bit in your PLC code? If you're issuing a 1-shot to do this, that's probably not long enough for the signal to get passed via Ethernet. Can you hold it for 1 second? Share a screen-shot of the OTE that calls this tag. \\n </s>