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Entry  Wed Apr 15 17:51:43 2015, Aidan, Summary, DAQ, Acromag XT1541 DAC working correctly - a little trick to configure ioctest2.cmdIOCTEST2.dbioctest1.cmdIOCTEST1.db
    Reply  Thu Apr 16 13:31:32 2015, Aidan, Summary, DAQ, Acromag XT1541 DAC working correctly - a little trick to configure 
Message ID: 1548     Entry time: Thu Apr 16 13:31:32 2015     In reply to: 1547
Author: Aidan 
Type: Summary 
Category: DAQ 
Subject: Acromag XT1541 DAC working correctly - a little trick to configure 

https://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:resources:computing:acromag

 

Quote:

Aidan.

Success!

I configured the Acromag XT1541 DAC to run with EPICS. This was a touch trickier than the ADC as there is a subtlety with the channel configuration in the EPICS database. The bottom line is that now I can change the value in an EPICS channel and a multimeter attached to the unit will show a corresponding change in voltage.

The attached files (ioctest2.cmd and IOCTEST2.db) are used to access the first output channel, OUT00, on the unit. Now that I've got the thing working I can debug the calibration. Once that's sorted I'll summarize the set-up procedure on a Wiki page with glorious detail for future reference.

The following command line is used to open the modbus EPICS server.

${EPICS_MODULES}/modbus/bin/${EPICS_HOST_ARCH}/modbusApp ioctest2.cmd

The ioctest1 files are for the ADC unit.

 

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