Equivalent of L-x for motor 2?

[cmus...@gmail.com]

Hello,

I have a pair of BiSlides with VXM motors that I'm trying to program to perform a raster scan. The program I wrote is as follows (with user inputs indicated in parentheses):

F,C,S1M600,S2M600,I1M-0,IA1M-0,I2M-0,IA2M-0,I2M(# of steps to initial position),I1M(# of steps to initial position),LM0,I2M(# of steps/interval),P30,L(# of motor 2 intervals),I1M(# of steps/interval),L-(# of motor 1 intervals),I1M-0,I2M-0,R

The issue seems to be that I want motor 2 to be the one that reverses direction after each increment of motor 1 but according to the documentation, the command L-x loops to the marker and alternates the direction of motor 1 indices. Is there a command that does the same for motor 2?

Second question:
Eventually, instead of the 3 second pause (P30), I would like to replace this part of the program with code that will take a measurement then continue with the scan. The measurement would be an instrument on another serial port, and I would want the scan to wait for an "ok" from the other serial port to continue. Can you suggest the best way to do this?

Thanks so much!
Chris

[Mitchel Evans]

Chris,

If you have a computer attached to the VXM all the time you would be better off to run the VXM in a direct mode using a BASIC program or whatever program language you are most proficient at.

By direct mode I mean a one move run instead of all the moves stored in the VXM like you are doing.

For example:

C,I2M800,R

(wait for "^" from VXM)

(wait for done signal from measurement instrument)

C,I1M1000,R

(wait for "^" from VXM)

(repeat above # times for loop)

Best Regards,

Mitch Evans

Velmex, Inc.

www.Velmex.com

"Positioning Systems for Science and Industry"

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