homing switch causing motion control problems

[Mariahnova]

I am controlling a dome for a telescope. I have a home position switch and motion control using one of NI's motion controllers. Everything works fine except for one bug. The dome just goes around and around. I can run a Home type reference search and it works fine. But if I command a position that runs through the home switch zone the dome stops moving. If I hit the command a second time it runs right to the correct position.

So why does the home switch stop the motion if I am not doing a reference search. Should I be using some other form of referencing?

Thanks,

Dave

[falkpl]

Do you have the home switch also configured as a limit switch?

What motion hardware are you using.  In addition to home limits, the ni cards often have a + limit and - limit and also a software limit, these can be configured via the api or in max.