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<== Date ==> <== Thread ==>

Subject: Initializing starting position on a Motor
From: Tonia Batten <Tonia.Batten@lightsource.ca>
To: "tech-talk@aps.anl.gov" <tech-talk@aps.anl.gov>
Date: Tue, 4 Dec 2012 16:52:01 -0600

Good Afternoon,

 

I am new to EPICS and am working on creating a motor controller for the PI E517 motor.  I am using EPICS R3.14.12 and Motor 6.5 I have got the device communicating and am able to perform the necessary commands but have run into a problem with initialization.  The problem is that when I restart my EPICS application I might be in the middle of a scan and therefore I don’t want the motor to change its current position (ideally I don’t want to have to move the motor to the same position).  At the moment when I restart the application the motor is returning to a zero position.   I suspect that I am not initializing the DVAL field correctly in the MOTOR record, but have not been able to confirm as the motor is moved as soon as the initialization is complete and before I can monitor.   Any feedback or direction would be greatly appreciated.

 

Regards,

Tonia Batten, P.Eng

Control System Analyst

Canadian Light Source

44 Innovation Blvd.

Saskatoon, SK S7N 2V3

Tel:  306-657-3865
Email: Tonia.Batten@lightsource.ca

 

 

 

 


Replies:
RE: Initializing starting position on a Motor Mark Rivers

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