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

Subject: ASYN Question
From: John Dobbins <jad@lepp.cornell.edu>
To: tech-talk@aps.anl.gov
Date: Fri, 20 Jan 2006 19:26:20 -0500
Dear All,

I have a serial device for which I am trying to implement Device Support
using ASYN. This is an EOS-901 from Eye on Science, a VAC ION Pump
controller.

There is one parameter, the Soft_Current_Trip_Level that requires the
following procedure:

1) Send: "UHV99S" (constant string)

2) Read: "Enter Alarm Limit\r"

(the unit will now wait until a new value is sent as follows)

3) Send: "0.000001\r" (value dependent string)

4) Read: "new limit=1.00e-06\r"


I can write a GPIBCVTIO routine that will accomplish all four
steps. Am I correct in assuming that no other gpibCmd for this device will process while my gpibCmd with the GPIBCVTIO routine is executing? i.e. the four steps cannot be interrupted by a request from some other periodically scanned record associated with this device?


Thanks,

John Dobbins

Laboratory for Elementary Particle Physics
Cornell University
Ithaca, NY




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