VI for controlling a step motor

[braintrain]

We are looking for a good VI for controlling a step motor. We are using the UMI-7764 and the Driver that connects to the motor, which is cmd2120p. We tried using this NI link, but it did not help us much: https://decibel.ni.com/content/docs/DOC-6385 . Is there possibly a better VI to work for specifically the UMI-7764?

Thanks

[ahillinaustin]

Hi braintrain,

Thanks for posting on the forums to get help with your motion application! Are you using an NI-Motion board with that UMI? (e.g. a PCI or PXI 73xx card). If so, you can use the Ni-Motion driver, which you can find here - http://www.ni.com/download/ni-motion-15.0/5614/en/ . Those boards are used with Ni-Motion, along with the UMI, and a drive to run the motor.

If you aren't using an NI-Motion board, you would need some DAQ card to generate the digital pulse train to send to the UMI and then to the drive. However, you would also need to create a control scheme to make sure you have an appropriate voltage level and velocity profile for the motor. Are you using LabVIEW and DAQmx? What OS are you running and what hardware are you using?

Hope this helps!

[braintrain]

Hi,

We are using LabVIEW but I do not believe we are using DAQmx. The OS we are using is Windows 7. The hardware we are using is the PCI-7334 mtion controller and a 7764 UMI. We are also using a CMD2120P stepper motor driver with a PK268MA stepper motor. This stepper motor driver and stepper motor is from Orientalmotor whereas the motion controller and the UMI are both from NI. 

Thanks,

Brian

[ks30]

Hi Brian,

Do you have NI-Motion installed? This is the driver and API that you would use with the PCI-7334 card and 7764 UMI. If you don't have it installed then you can download it from the following link:

NI-Motion 15.0

http://www.ni.com/download/ni-motion-15.0/5614/en/

Please note that the version I have linked to requires LabVIEW 2012 or later.

Once you have installed it, you can then find examples using the API by navigating to: LabVIEW Help>> Find Examples>>Browse>>Hardware Input and Output>>Motion Control>>NI 73xx

Regards,

Kyle S.
Applications Engineer
National Instruments
http://www.ni.com/support