MC_MoveRelative Done condition issues

There is a trace tool in TIA. Use it to diagnose your issue.

From pictures presented a question arise where and when you clear the latches.

Hi there,

the done bit of the MoveRelative shows that the movement is finished and target position is reached. The important part is the last one.

This refers to the parametrization of the Technological object, especially the positioning monitoring parameters. See here for closer information about these parameters: https://support.industry.siemens.com/cs/us/en/view/109773400/124514277259

Additionally you should note: The outputs of the MC instructions show their state as long as the Execute/Enable is set to TRUE. For the instructions with Execute input, if you only trigger these with rising edge but then set the Execute to FALSE again (which would be alright), the status of the outputs would only be displayed for one cycle.

Anyway, if the MoveRelative does not show Done at any time, there must either be no movement at al (i.e. you have not triggered it), or there is an error at the instruction which you do not check/see up to now. Movement and no Done signal would mean the target position was never reached, which would sooner or later result in an error, due to position monitoring parameters you set (or still have set to default).

Regards,
daviso