how can i control the motor movement of stepper motor using a NI PXI 7330

[Tikoy]

Good day to all,

i'm a newbie in programming in motion control of NI. I just want to ask if how can i control the clockwise and counter-clockwise rotation of a stepper motor using NI PXI 7330 module. all i can do is the counter-clockwise rotation using the example vi (Simple one-axis move.vi) found in the examples of LabView 2009.

Thanks

[Jochen]

Tikoy,

the rotation direction depends on the operation mode and the move parameters:

• In relative position mode the rotation direction is determined by the sign of the target position.
• In absolute position mode the rotation direction is determined by the sign of the difference of target position - current position.
• In velocity mode the rotation directionis determined by the sign of the velocity parameter.

For more information please refer to the online help.

I hope that helps,

Jochen Klier

National Instruments

[Tikoy]

Good day Sir Jochen,

thank you for the advice. i'll put a negative sign in the target position.

thanks

[Tikoy]

Good day Sir Jochen,

i tried putting a negative sign on the target position but still the rotation of the stepper didn't not changed . do i need to add more wiring to the UMI because i only wired the 5V , CW and the CCW port

thanks

[Jochen]

Hi Tikoy,

is there a chance, that you have configured the 7330 to output a step/direction signal, while your drive expects a CW/CCW signal?

You can change this setting in MAX:

I hope that helps,

Jochen

[Tikoy]

Good day Sir Jochen,

Thanks for the help. Your advise works in my program ... Super Thank you for the advice.

Best regards

[Tikoy]

Good day to all,

Right now I'm troubled why my motor still moves even if it reach the limit sensor that i've intalled in my project. I only wired the limit switch to the necessarry pinout of the UMI-7764 (forward and reverse). need help

Thanks

[Jochen]

Tikoy,

what type of limit switch sensor are you using and how did you wire itß What are your MAX settings regarding the limit switches?

Thanks,

Jochen

[Tikoy]

what type of limit switch sensor are you using and how did you wire itß What are your MAX settings regarding the limit switches?

Good day SIr Jochen,

I am using two reed switch for the reverse and forward limit. I wired the signal wire of the reed switch to the limit ports(forward and reverse Limit) and its ground to the digital ground of the UMI-7764.

the attachment below is the my max configuration about limit switches

[Tikoy]

Good day Jochen,

I'm using two reed switches I've connected the signal wire of these switches to the forward and reverse limit of the UMI-7764. their ground wire are connected to the digital gnd of the UMI 7764.

the attachment below is the MAX setting regarding the limit switches.

thanks