text: <s>[INST] 755 Motion Feed Back fault Summary: Feedback Data Loss FL Fault Hi I have an application where I am using a 755 drive as a motion drive over ethernet controlled by a L73 cpu rev 20. I managed to commission before the hardware got delivered to site and all functioned well. At site I am getting a FeedbackDataLossFLFault and the 20-750-UFB-1 indicates that it has a fault by flashing red. According to the Fault this is what it describes: The number of consecutive missed or corrupted serial data packets over the serial data channel from a feedback device has exceeded the feedback data loss Factory Limit. The offending feedbackfchannel is encoded in the associated Faultt/Alarm Sub Code. I have checked the feedback cable, wiring to the drive and even swapped servo motors and new UFB, but mo luck. Can anyone help? Thanx [/INST] Some Exta Info: Fault entry: Type 3 Code 45 Sub Code 1 Stop Action 4 State Change 3 \\n </s>