text: <s>[INST] Powerflex 755 loses Motion parameters Summary: PF-755 loses motion parameters during communication faultWe have a Powerflex 755 with Motion control , connected to clx to en2tr having L85 as processor Software is studio 5000 with version 32 Normally we have the drive working fine with motion control , however some times when there is communication failure , the drives motion parameters get lost and we need to reprogram it again . I tried checking for ADC but cant see in the drive properties where the ADC option is present , i guess for 755 with CIP motion , the ADC configuration is not present . Any suggestions on this [/INST] When using a PF755 in CIP motion, ALL parameters come from the processor. You cannot program the drive directly (such as with CCW or DriveExecutive). Are you saying the PLC is losing the parameters defined in the axis properties page of the ControlLogix triee? You do not need ADC for such an application; in fact it can be a real hassle sometimes. When a Logix processor connects to a PF755 in a CIP motion environment, it downloads ALL parameters necessary. If you are setting parameters in the drive, then starting the processor, all the work you did setting the parameters gets wiped out by the PLC. This is a feature of Logix, not a bug. In this way, all programming happens within the logix environment. Call it one-stop programming. You do not have to set up logix programming, then motion programming in a different environment, then drive parameters in a third environment. \\n </s>