Hello,

I am having the same problem. 

MCPower is always busy even there is no enable.

How did you fix it ?

Thanks.

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Split from MC_Power.Busy always high.

AutoGen_8707373

Hello,

I am having the same problem. 

MCPower is always busy even there is no enable.

How did you fix it ?

Thanks. 

You are not supplying enough information. The volunteers cannot help much without information. CPU / software / application / screen capture / online view /.. We have to see what you see.

The EN pin of the MC_Power instruction must be TRUE and the block should be actively scanned.

I am using S71500, Tia V18. 

Trying to control S120 drives on profinet. Everything is talking, I can run the motor but having this issue.

MCPower is Busy after I give the enable and after I start the motor, brake stays open even I cut all the enables.

the forum doesn`t allow me to attach any screen shots so couldnt share any online screen capture.

Why is the state of the busy signal a problem for you? (irritation vs blocking issue) How does the state of the motion control technical object look like?

There is still not much information to work with. Consider using the classic web interface for the forum. You can use inline pictures, but that does not always work so well. Use the ability to add a file as an attachment. I suggest you put all pictures in a single ZIP file.

As alternative you can make a small sample project that you know is giving problems. Share it here. At least then we know which CPU version, software version and motion control block version is being used.

MCPower is always busy even there is no enable.

I am using S71500, Tia V18.

Trying to control S120 drives on profinet. Everything is talking, I can run the motor but having this issue.

MCPower is Busy after I give the enable and after I start the motor, brake stays open even I cut all the enables.

Thank you very much for your answer, I managed to share a online screen capture on the classic forum

The picture is very helpful, thank you.

Please keep the state of the EN high. (Or at least keep EN high until the busy state drops away.)  The block cannot do its task if the EN pin is switched off. For you I recommend keeping the EN pin always active and ensuring the block is scanned with every PLC cycle.

Control the Enable pin with the conditions you aim to control the system with.

Do also note that a loss in MC_Power will make you loose the homing reference. You will need to compensate for that fact. You need to use MC_Home. Up to you if you wish to use direct homing or apply passive/active homing.

Please keep the state of the EN high. (Or at least keep EN high until the busy state drops away.)

and use the ENABLE when you need to run the motor.

Please keep the state of the EN high. (Or at least keep EN high until the busy state drops away.)

and use the ENABLE when you need to run the motor.

Hi there,

I honestly wonder why to use the EN of the MC instructions at all. I just do not see any advantage, only problems (like the one you ran into).

The MC instructions have to be called cyclically when using them. Always, no matter what. For controlling them you have their inputs, so from a functional point of view I do not see any reason to use the EN input.
Also I would recommend specifically NOT to drop the EN after busy dropped away. MC_Power.Busy dropping would mean eather you have some error that is displayed at the instruction, or no error and TO is enabled (MC_Power.Status would be TRUE then). But if you drop the EN then, the instruction will not be called anymore, which means that its outputs do not get updated and you are not able to check them anymore.
Really, just do not use the EN with the MC instructions and ensure to call them cyclically, as the manual states.

Regards,
daviso