I've wired the simple, normally open limit switch on my translation stage/stepper assembly to the appropriate feedback pins on the UMI-7774, but when i step the stage to the limit position (verified with ohm meter) using NI Max, I can't activate the limit. I'm sure that I am doing (or not doing) something really stupid...
Can you check your Motion I/O settings in NI-MAX to see if everything is configured correctly. Also, what is the limit switch status under in 1-D Interactive (under Interactive folder)?
Lastly, what is the model number of your controller card?
I'm using the 7340 controller card. I can control the stage as i need to and the motion parameters agree with independent measurements/calculations as expected. i can read the encoder back properly as well. I have attached a screen shot of the 1d interactive screen from Max that only shows the negative limit switch enabled but i have tried every possible combination of switch enable and polarity. When i unplug the feedback controller and check each switch separately with an ohmmeter, they each close as expected at the end of stage travel.
