Experimental Physics and
Industrial Control System

"Szalata, Zenon M." <[email protected]> · Tue, 16 Oct 2007 10:47:11 -0700

My soft IOC program generates errors, see below.  I control the IOC from an edm panel, where one of the controlls tells the IOC to write a sring of bytes to the gpib KS3988 crate controller and then read the response.  When I press the button soon after the IOC is started it seems to be working fine.  However if I wait a  few minutes after the IOC is started and then press the button the program generates errors.  Sometimes it crashes with seg fault, like it did this time, and sometimes it recoveres after two subsequent button clicks.  Looks like the connection to the device times out.  Any ideas how to fix it?
Here is the output:

-------------------------------------
zms@esaux1 $ ../../bin/linux-x86/ksTest st.cmd
#!../../bin/linux-x86/ksTest
< envPaths
epicsEnvSet(ARCH,"linux-x86")
epicsEnvSet(IOC,"iocksTest")
epicsEnvSet(TOP,"/afs/slac.stanford.edu/g/esa/ilc/epics/iocTop/ksTest")
epicsEnvSet(ASYN,"/afs/slac/g/esa/ilc/epics/modules/asyn/4-8")
epicsEnvSet(GENSUB,"/afs/slac/g/esa/ilc/epics/modules/genSub/1-6")
epicsEnvSet(KS3988,"/afs/slac/g/esa/ilc/epics/modules/ks3988")
epicsEnvSet(EPICS_BASE,"/afs/slac/g/esa/ilc/epics/base/R3-14-9-ilc1")
cd /afs/slac.stanford.edu/g/esa/ilc/epics/iocTop/ksTest
## Register all support components
dbLoadDatabase("dbd/ksTest.dbd")
ksTest_registerRecordDeviceDriver(pdbbase)
vxi11Configure( "L0","134.79.64.25",0,0.0,"gpib0",0,0)
## Load record instances
dbLoadRecords( "db/dbExample1.db","P=KS:")
dbLoadRecords( "db/devKS3988.db","P=KS:,Q=AIO,W=AWRT,L=0,A=12")
dbLoadRecords( "db/asynIO.db","P=KS:,R=AIO,PORT=L0,ADDR=12,IMAX=100,OMAX=100")
dbLoadRecords( "db/asynWrt.db","P=KS:,R=AWRT,PORT=L0,ADDR=12,IMAX=100,OMAX=100")
cd /afs/slac.stanford.edu/g/esa/ilc/epics/iocTop/ksTest/iocBoot/iocksTest
iocInit()
Starting iocInit
############################################################################
## EPICS R3.14.9-lcls1 $R3-14-9$ $2007/02/05 16:31:45$
## EPICS Base built Oct  2 2007
############################################################################
iocInit: All initialization complete
epics> ksReadReg: c=12, n=0, a=0, f=1, nw=1, d=0, l=0, sm=0, dm=0
ksReadReg 3 bytes: 0x1e 0x0 0x1
This is a message number 0
2007/10/16 10:34:42.245 L0 vxi11 clientIoCall errno 104 clnt_stat 4
2007/10/16 10:34:42.245 L0 vxiDestroyDevLink RPC error : RPC: Unable to send; er
rno = Broken pipe

2007/10/16 10:34:42.246 L0 vxiDisconnectPort : RPC: Unable to send; errno = Brok
en pipe

2007/10/16 10:34:44.247 L0 vxiDestroyDevLink RPC error : RPC: Unable to send; er
rno = Broken pipe

L0 port not connected
2007/10/16 10:34:44.247 L0 asynGpib:pollAddr srqEnable
2007/10/16 10:34:44.247 KS:AIO: Write error, nout=0, L0 RPC failed

2007/10/16 10:34:44.247 L0 port not connected
2007/10/16 10:34:44.247 KS:AIO: Error L0 port is not connected

2007/10/16 10:34:44.247 KS:AIO: error  nread -1210113632 L0 port is not connecte
d

2007/10/16 10:34:44.247 KS:AIO: Overflow nread -1210113632 L0 port is not connec
ted

Segmentation fault (core dumped)
--------------------------------------------------------
Thanks,
Zen

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System