rotate a stage using SMC100 in LabWindows

[missmarie]

I am trying to control a rotating stage through the newport SMC100 motion controler with Labwindows. I manage to move the table and read the output angle. My problem is that, when the stage is rotating, it doesn't wait to have finished the rotation before sending the next command.

Therefore, I implemented a while loop for it to wait the end of the motion before continuing in the program:

while(Tout>valueplus || Tout<valueminus)
     Tout=read_position();

It works fine from angles 20-360 but is very slow in reading values of angles from 0-20 degrees! I suppose there is a problem with my read_position function.

Anyone would have a function that works fine for EVERY angle?? There are LabView drivers but I wasn t able to find any for LabWindows..

Thanks

[Wolfgang]

Hi,

While I don't a function I would suspect that the difficulty might be related to your interval valueplus...valueminus: how large are these values? And what value will you get back for an angle of 365 degrees, 5 or 365?

[JGS]

Hello,

I did not write it myself nor in labwindows. However I have seen source for the SMC100 where the TS? command is used inside a loop until the controller state "Ready from moving" (33)

Succes, Jos