Experimental Physics and Industrial Control System
Hi Xiaomin,
If you are expecting a string to be returned, you probably need to use a record type of "stringin" instead of "ai".
Kind regards,
Becky
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Today's Topics:
1. ??: StreamDevice (liuxiaomin)
----------------------------------------------------------------------
Message: 1
Date: Tue, 8 Mar 2022 16:29:52 +0800
From: liuxiaomin <liuxiaomin at sari.ac.cn>
To: Mark Rivers <rivers at cars.uchicago.edu>, "tech-talk at aps.anl.gov"
<tech-talk at aps.anl.gov>
Subject: ??: StreamDevice
Message-ID: <622713FF.03484B.33183 at cstnet.cn>
Content-Type: text/plain; charset="utf-8"
Hi Mark,
Thank you for helping me solve the previous problem.
I want to execute a *IDN? command which returns the instrument?s identification string,
The db files is as follows:
record(ai, "$(user):xh") {
??field(DTYP, "stream")
??field(SCAN, "1 second")
??field(INP, "@sd.proto DEVICENAME CAT1") }
The proto files is as follows:
DEVICENAME{
????out "*IDN?"; ?
????in "%s";
}
When I execute the st.cmd file,it shows no error, but when I type caget, it shows 0.I think it should returns a string with the following format: Agilent Technologies,53230A,MY58060118,02.09-1731.8935-1.19-4.16-127-159-35. The description of the command of *IDN? is in the attachment.
How can I solve this problem?
Thanks,
Xiaomin
???: Mark Rivers
????: 2022?3?3? 10:28
???: tech-talk at aps.anl.gov; ???
??: Re: StreamDevice
Hi?Xiaomin,
I am confused.? You have this which implies that the external device for stream is at IP address?169.254.2.30
drvAsynIPPortConfigure("CAT1","169.254.2.30:5025",0,0,1)
But your IOC has this:
EPICS_CA_ADDR_LIST: 169.254.2.30:5068
Your client host has this:
EPICS_CA_ADDR_LIST=169.254.2.30:5068
So your IOC, client machine, and external device all have the same IP address?
If this is correct, then your EPICS IOC and the EPICS client (caget) are on the same subnet.??Then just don't define EPICS_CA_ADDR_LIST or EPICS_CA_AUTO_ADDR_LIST.? It should find the PV fine.
Mark
From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of ??? via Tech-talk <tech-talk at aps.anl.gov>
Sent: Wednesday, March 2, 2022 7:59 PM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: StreamDevice
?
Hi,
I am trying to use StreamDevice?on debian system to control device,?the device is universal frequency counter/timer.
When I execute the st.cmd file,it shows no error, but when I type caget, it shows pv name not found:
#!../../bin/linux-x86_64/sd
< envPaths
epicsEnvSet("IOC","iocsd")
epicsEnvSet("TOP","/home/iocusr/sd")
epicsEnvSet("MODULES","/opt/epics/base/../modules")
epicsEnvSet("AUTOSAVE","/opt/epics/base/../modules/autosave-R5-7-1")
epicsEnvSet("ASYN","/opt/epics/base/../modules/asyn-R4-41")
epicsEnvSet("BUSY","/opt/epics/base/../modules/busy-1-6-1")
epicsEnvSet("CALC","/opt/epics/base/../modules/calc-R3-7-4")
epicsEnvSet("CAPUTLOG","/opt/epics/base/../modules/caPutLog-3-5")
epicsEnvSet("IOCSTATS","/opt/epics/base/../modules/iocStats-3-1-16")
epicsEnvSet("MODBUS","/opt/epics/base/../modules/modbus-R3-2")
epicsEnvSet("NETDEV","/opt/epics/base/../modules/netDev-1-0-6")
epicsEnvSet("PC-MONITOR","/opt/epics/base/../modules/PC-MONITOR1-0-2")
epicsEnvSet("PROCSERVCONTROL","/opt/epics/base/../modules/procServControl-1-9")
epicsEnvSet("S7NODAVE","/opt/epics/base/../modules/s7nodave-2-1-3")
epicsEnvSet("S7PLC","/opt/epics/base/../modules/s7plc")
epicsEnvSet("SSCAN","/opt/epics/base/../modules/sscan-2-10")
epicsEnvSet("STREAM","/opt/epics/base/../modules/StreamDevice-2-8-9")
epicsEnvSet("SNCSEQ","/opt/epics/base/../modules/seq-2-2-6")
epicsEnvSet("EPICS_BASE","/opt/epics/base")
epicsEnvSet("EPICS_CA_SERVER_PORT", 5068)
epicsEnvSet("IOCNAME","sd")
cd "/home/iocusr/sd"
dbLoadDatabase "dbd/sd.dbd"
sd_registerRecordDeviceDriver pdbbase
dbLoadRecords "db/sd.db", "user=sd"
drvAsynIPPortConfigure("CAT1","169.254.2.30:5025",0,0,1)
epicsEnvSet("STREAM_PROTOCOL_PATH", ".:../../db")
cd "/home/iocusr/sd/iocBoot/iocsd"
iocInit
Starting iocInit
sevr=info s7plcInit: no stations configured
iocRun: All initialization complete
epics> dbl
sd:xh
caget sd:xh??
Channel connect timed out: 'sd:xh' not found.
epics> asynReport 1
CAT1 multiDevice:No canBlock:Yes autoConnect:Yes
????enabled:Yes connected:Yes numberConnects 1
????nDevices 0 nQueued 0 blocked:No
????asynManagerLock:No synchronousLock:No
????exceptionActive:No exceptionUsers 1 exceptionNotifys 0
????traceMask:0x1 traceIOMask:0x0 traceInfoMask:0x1
????Port 169.254.2.30:5025: Connected
The db files is as follows:
record(ai, "$(user):xh") {
??field(DTYP, "stream")
??field(SCAN, "1 second")
??field(INP, "@sd.proto DEVICENAME CAT1")
}
The proto files is as follows:
DEVICENAME{
????out "*IDN?"; ?
????in "%f";
}
The output of the epicsPrtEnvParams?command at the IOC prompt is as follows:
epicsPrtEnvParams ??????????????
EPICS_CA_ADDR_LIST: 169.254.2.30:5068
EPICS_CA_CONN_TMO: 30.0
EPICS_CA_AUTO_ADDR_LIST: NO
EPICS_CA_REPEATER_PORT: 5065
EPICS_CA_SERVER_PORT: 5068
EPICS_CA_MAX_ARRAY_BYTES: 16384
EPICS_CA_AUTO_ARRAY_BYTES: YES
EPICS_CA_MAX_SEARCH_PERIOD: 300.0
EPICS_CA_NAME_SERVERS is undefined
EPICS_CA_MCAST_TTL: 1
EPICS_CAS_INTF_ADDR_LIST is undefined
EPICS_CAS_IGNORE_ADDR_LIST is undefined
EPICS_CAS_AUTO_BEACON_ADDR_LIST is undefined
EPICS_CAS_BEACON_ADDR_LIST is undefined
EPICS_CAS_SERVER_PORT is undefined
EPICS_CA_BEACON_PERIOD: 15.0
EPICS_CAS_BEACON_PERIOD is undefined
EPICS_CAS_BEACON_PORT is undefined
EPICS_BUILD_COMPILER_CLASS: gcc
EPICS_BUILD_OS_CLASS: Linux
EPICS_BUILD_TARGET_ARCH: linux-x86_64
EPICS_TZ: CST6CDT,M3.2.0/2,M11.1.0/2
EPICS_TS_NTP_INET is undefined
EPICS_IOC_IGNORE_SERVERS is undefined
EPICS_IOC_LOG_PORT: 7004
EPICS_IOC_LOG_INET is undefined
EPICS_IOC_LOG_FILE_LIMIT: 1000000
EPICS_IOC_LOG_FILE_NAME is undefined
EPICS_IOC_LOG_FILE_COMMAND is undefined
IOCSH_PS1: epics>
IOCSH_HISTSIZE: 50
IOCSH_HISTEDIT_DISABLE is undefined
epics>?
The output of theprintenv | grep EPICS?command at the shell prompt where? running caput is as follows:
printenv | grep EPICS
EPICS_CA_ADDR_LIST=169.254.2.30:5068
EPICS_HOST_ARCH=linux-x86_64
EPICS_CA_AUTO_ADDR_LIST=NO
EPICS_BASE=/opt/epics/base
The description of the command of *IDN? is in the attachment.
I don't know what's wrong, how can I solve this problem?
Thanks,
Xiaomin
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