Jrk G2 21v3 controller, "Stop" serial command doesn't works

Hello group.
I have Jrk G2 21v3 controller.
Communicate with him by serial protocol.
I can read, set position but can not to stop it :frowning:
I sent Stop command “0xFF” as shown in the manual but nothing happen.
I do something wrong or do not understand right something?

Thank U.

Problem was resolved, was small bug in the source.

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I am glad to hear you were able to get it working. Thank you for letting us know what the problem was.