[timbochung]

Hi Tom,

When I open up the step response - my drives get reassigned to different channels.

When I first power up:
- I open the axis window and enable all three drives (channels 0,1,2)
- I open up the C program and run some code to see if all three drives are moving (I manually change the axis from (0-2):
​

#include "KMotionDef.h"

#define AXIS 2
main()
{
FPGA(STEP_PULSE_LENGTH_ADD) = 63; // set polarity and pulse length to 4us
int i;
for (i=0;i<10;i++)
{
MoveRel(AXIS,1000);
while (!CheckDone(AXIS)) ;
MoveRel(AXIS,-1000);
while (!CheckDone(AXIS)) ;

- I then open up the step response to do a move and that's when things go weird,
Axis 0 works ok, but Axis 1 then moves the motor that was assigned to Axis 2 and then Axis 2 doesn't move at all.

Help!

Thanks,
Tim

[TomKerekes]

Hi Tim,

That is correct. Pushing "Move" on the Step Response Screen downloads all settings in the the Step Response, Config, and Filters Screens to KFLOP.

If your Screen Settings are incorrect for the axis channel then after pushing "Move" KFLOP will be configured incorrectly.

Note: you can push "Upload" to change all Screen Settings for an axis to what settings are currently in KFLOP for that axis. This Flash Video may help.

HTH
Regards
TK

[timbochung]

Thanks Tom - finally got all three axes working! Realized that my channels were incorrectly setup. From a previous post somewhere - I was under the impression that it should be 8,10,12 when it in reality it should 0,1,2 or 8,9,10. Studying the simple stepper motor c program example was a big help in understanding what is going on.

Thanks,
Tim