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Subject: erro when writing to the GPIB device on softIOC
From: zhangdemin99 <zhangdemin99@163.com>
To: tech-talk@aps.anl.gov
Date: Mon, 14 Jan 2008 16:29:36 +0800 (CST)
 
Dera all,
 I am trying to communicate with the GPIB device on the softIOC with GPIB bus.
When I write to the device:
epics> dbpf PSM6003:PSM6003Record:current-step 0.5
DBR_STRING:          0.5
it appears erro information after a few seconds:
epics> 2008/01/14 10:51:45.364 L0 addr 0 : device timed out.
2008/01/14 10:51:45.365 PSM6003:PSM6003Record:current-step write status "L0 writeGpib failed EABO 6: Operation aborted
" requested 19 but sent 5211728 bytes
2008/01/14 10:51:45.365 PSM6003:PSM6003Record:current-step error.
2008/01/14 10:52:15.362 L0 addr 0 : device timed out.
2008/01/14 10:52:15.362 PSM6003:PSM6003Record:current-step respond2Writes read failed
Why it says device timed out. I am sure the device and the PCI-GPIB card are
connected well. "requested 19 but sent 5211728 bytes", should I clean the buffer, how to?
The command array I set are:
 {&DSET_SO,GPIBWRITE,IB_Q_LOW,NULL,":CURRent:STEP %S",50,50,NULL,0,0,NULL,NULL,NULL},
   
    {&DSET_SI,GPIBREAD,IB_Q_LOW,":CURRent:STEP?","%39[^\r\n]",0,50,NULL,0,0,NULL,NULL,NULL}
many thanks in advance
 
 



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Re: erro when writing to the GPIB device on softIOC Emmanuel Mayssat

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