Experimental Physics and
Industrial Control System

Robert Emery <[email protected]> · Fri, 25 Mar 2011 21:36:01 -0700

I am using EPICS 3.14.12, ASYN 4.15 to control a Kikusui power supply

via an Agilent E5810. After I use an ASYN record to send a request to

the power supply with bad syntax, the power supply will not reply to any

further requests until I have cycled the power on the supply. When I

try to repeat this situation without EPICS, using only the web interface

of the E5810 to send GPIB requests, the power supply will respond to

requests after it has received one with bad syntax. I do not know how

the E5810 is getting around the problem. I tried setting the ifc

(interface clear) flag in the vxi11Configure command. Using the

asynSetTraceMask I can see that the ifc command is issued after sending

a GPIB request with bad syntax, and on the scope I can see the IFC line

go low, but this does not solve the problem. I wanted to try sending a

dcl (clear device) command. Is there an easy way to do this with ASYN?

I saw a reference to a command IBDCL in asynGPIB, but I'm not sure how

to access this.

Thanks,

Rob Emery
UW Medical Center