Experimental Physics and
Industrial Control System

"Pearson, MR (Matthew)" <[email protected]> · Fri, 13 Mar 2009 13:46:29 -0000

Hi, 

> I use MM4000 asynMotor driver to control Newport MM4006 controllers. 
> The movements are done correctly. 
> 
> But for certain axis/axes, the DMOV field does not reset to 1 after
> position is reached. 

Was the final position reached? Or did the motor stop just outside the
deadband RDBD?

> I poll the controller status using "MS" command, which 
> reports the axis
> is not moving. 
> Also the MOVN field is going through 0->1->0 sequence correctly.
> 
> Other fields when this happens:
> MSTA - 0x80a
> MIP  - 0x420
> >From the MIP field, it is waiting for a Delay callback, which never
> comes?

The MSTA field seems to indicate that the motor is still moving. And yet
MOVN has been set back to zero... It looks like the motor record and the
driver have got out of sync somehow.

> 
> To reset DMOV field, I can write 1 to PROC field or any field any can
> process
> the record but without moving the motor, e.g. SPMG field.
> 

Are you able to do another move after you 'prod' the record?

Does this happen every time on the same axes, or intermittently?

To help diagnose this it might be worth turning on Asyn tracing for that
axis, like:

asynSetTraceIOMask("PORTNAME",{card_no},255)
asynSetTraceMask("PORTNAME",{card_no},255) 

> I am using motor 6-2-2 release for asynMotor device support, 
> but the MM4000 driver is updated to 6-4-2.

Might be worth updating to asynMotor from 6-4-2 as well.

Cheers,
Matthew

> 
> Many thanks.
> --
> Dr. Xiaoqiang Wang
> Paul Scherrer Institut, WBGB/010
> 5232 Villigen PSI, Switzerland
> 
> 
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System