Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <[email protected]> · Tue, 9 Apr 2019 17:59:39 +0000

I agree that this is a bad behavior and I have complained about it for years.  I think it's origin was in an old motor controller that could only tell you that it was at a limit, but not which one.  So it needed to use the direction to figure that out.

I would like to be able to unplug my motor cable with the limit connections and immediately see both limit lights on the OPI screen.

Mark

-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Davis, Mark via Tech-talk
Sent: Tuesday, April 9, 2019 12:57 PM
To: [email protected]
Subject: limit switch fields in the motor record

Is there a reason that the xLS/RxLS limit switch fields in the motor record only work when the TDIR field's value indicates that the motor is or was last moving in the direction that would normally trigger the corresponding limit switch?

This means that that only way to know if a limit switch has REALLY been triggered is to monitor the bits in the MSTA field.

I am using version 6-9 of the motor record if that makes any difference.

Mark Davis, NSCL/FRIB
Control Systems Software Engineer
[email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System