How do I speed up my steps on my nema 23 1.8 degree stepper motor?

AshTheWaterBoy

I am using a CRB 15000 with a omnicore controller. I'm using the DO of a DSQC1030 to pulse to a stepper driver which controlls my nema 23 stepper motor. I'm running a code to pulsedo to a motor controller with a waittime. It looks like:

  PROC main()

        FOR i FROM 1 TO 1000 DO

            PulseDO\PLength:=0.001, DO10;

            waittime .003;

        ENDFOR

    ENDPROC

ENDMODULE

I used the lowest times it would let me but I can't get my motor to go faster. Is there a solution to speed up my stepper without using a outside controller like a arduino?

Tompanhuhu

Hello.

There are some settings on the IO unit you can change to make communication faster.
Go to IO Engineering in robotstudio and check the properties of your IO device as shown in the image.



Note that setting the communication too fast might cause issues so you have to test what works.

My suggestion is settings the Connection Priority to High / Urgent.
You can also try changing Production Trigger to "Change of state" for faster reaction time with the IO device.

If this dosen't work you can try to lower Output RPI as this is basically the time between updates of your io device. So if your RPI is set to 40,000us your IO Card is physically updated once every 40ms even if your rapid code works faster. 

If you manage to make your IO card faster you can also change your program to set and reset the signal instead of pulsing. 

Example:

MODULE Module1

    !Set your RPI here

    CONST num nIoUpdateInterval:= 0.040;

    

    PROC main()

        FOR i FROM 1 TO 1000 DO

            InvertDO DO10;

            WaitTime nIoUpdateInterval;

        ENDFOR    

    ENDPROC

ENDMODULE