Experimental Physics and
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Hello! If I understand the question correctly, I believe that this is what we are doing as standard with the motor driver subsystem which we have between the OMS58 card and the motors at SLS. These were designed in-house. See: http://www.sls.psi.ch/beamlines/ege/index.html for a picture and a link to more information: In the motor record, we have the following fields defined: record (motor, "my_motor") { ... field (INIT, "@DPM_ON@AN") <== turn on power monitoring and turn off power to the motors. field(PREM, ";AF;") <== turn on power to the motors. field(POST, ";AN;") <== turn off power to the motors. ... } Note that there's a bit of negative logic involved here, i.e. turning "off" the auxiliary signal with "AF" actually turns the drive current on in our setup! Regards, David [email protected] _/_/_/ _/ _/_/_/ Beamline Control Group, SLS Project _/ _/ _/ Paul Scherrer Institute _/_/ _/ _/_/ CH-5232 Villigen-PSI _/ _/ _/ Tel: +41 56 310 3616 _/_/_/ _/_/_/ _/_/_/ Fax: +41 56 310 3294
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ANJ, 10 Aug 2010 |
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