Experimental Physics and
Industrial Control System

"Martin L. Smith" <[email protected]> · Wed, 15 Jan 2003 07:03:57 -0600

Rok Sabjan wrote:

Hello!
I'm dealing with some stepper motor control and would like to use
auxiliary outputs of the OMS 58 motor controller card for setting the
stepper driver to all windings off mode. Has this been attempted before?
I have looked into motor record, but was unable to find any
implementation of that functionality.
Do you think this is possible?
br
Rok

I've been using the VME8-8 instead of the OMS 58 but I use this feature

for boosting the drive current to the motors. I'm using version 4.41 of
the motor record and there is one gotcha as far as I know .... see
below. Note that the pre-move command has a space as part of the
command. I found that this was required to get the pre-move to work
properly. So, you should check that your signals work with your database.
record(motor,"Moto1r") {
        field(DESC,"US motor")
        field(DTYP,"OMS VME8/44")
        field(PREM," AF1")
        field(POST,"AN1")
}
Marty Smith
Argonne National Lab.
APS - Controls Group

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System