Experimental Physics and
Industrial Control System

"J. Lewis Muir" <[email protected]> · Tue, 25 Sep 2012 15:56:56 -0500

On 9/25/12 3:31 PM, Ernest L. Williams Jr. wrote:
> On 09/25/2012 01:01 PM, J. Lewis Muir wrote:
>> I've run into the same problem, but not using URIP.
> Are you using "Use Encoder" ?
> Seems to me that any of the "USE xxx" modes exhibit this problem.

Both UEIP and URIP are set to No.  My DTYP is asynMotor.  And
the driver implementing the asynMotor interface is pmacAsynMotor
from tpmac 3-10 <http://www.gmca.anl.gov/TPMAC2/index.html>.
So, yes an encoder is actually being used, but my guess is that
the motor record UEIP and ERIP fields are ignored by the
pmacAsynMotor driver.  (I haven't checked this.)

>> My scenario
>> is like yours: I can't move the motor because it is beyond one
>> of the soft limits.  My workaround is to temporarily extend or
>> disable the soft limits, move the motor back to a position
>> within the original soft limits, and then restore the soft
>> limits.
> This is a manual operation that we don't operators to have to
> deal with.
> Of course, some sequencer could be written for automation.

Right; in fact that's what I've done to automate the recovery.

Lewis

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System