Experimental Physics and
Industrial Control System

haquin <[email protected]> · Mon, 17 Nov 2008 09:58:09 +0100

Hi Andrew,
Of course, the test with the caput tells us that the problem is not in
the example client program.
We've just realized that my IOC was running under VxWorks !

So I restarted the SAME IOC but under linux-x86 and then all is working
correctly.

Here is the difference you are looking for, the problem occur under VxWorks.
If you are still interrested to know more about my IOC, Here is more
about it:

we have a Waveform record using ASYN/MODBUS device support,

Some "GenSub", "ai" and "ao" records all using soft device support

=> the problem occur independently of the record type (under VxWorks only)
Regards.
Andrew Johnson a Ãcrit :

Hi Christophe,
On Friday 14 November 2008 10:34:16 haquin wrote:

We tried with the command line, and we can reproduce the problem, here

is the result:

[haquin@accep1 haquin]$ caput -c LB-DIA-ALB-TST2:Read_16bits_Reg.DESC

"abcdefg"

Old : LB-DIA-ALB-TST2:Read_16bits_Reg.DESC It's 14-NOV-2008 16:52:23.04

New : LB-DIA-ALB-TST2:Read_16bits_Reg.DESC a

[haquin@accep1 haquin]$ caput LB-DIA-ALB-TST2:Read_16bits_Reg.DESC

"abcdefg" Old : LB-DIA-ALB-TST2:Read_16bits_Reg.DESC a

New : LB-DIA-ALB-TST2:Read_16bits_Reg.DESC abcdefg

That is very interesting, and tells me that the problem is probably not in
that example client program.
Tell me about the IOC that this PV resides on, and the record type and device
support of the record itself. Does the problem also occur with other fields
or other record types? Is it limited to this particular IOC, or this
architecture of IOC?
I'm trying to find out what might be different about your installation and
IOC, because I am unable to replicate this behavior on a linux-x86 IOC here
using R3.14.9.
- Andrew

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fn:Christophe Haquin
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System