Re: modbus-tcp

[Simon Rose via Tech-talk <tech-talk at aps.anl.gov>]

Can you send a link to your code (python and otherwise)? It might be helpful to see that…

 

Cheers,

 

Simon

______________________

 

Simon Rose

Software Engineer

Control System Software and Services

 

European Spallation Source ERIC

P.O. Box 176, SE-221 00 Lund, Sweden

Visiting address: Partikelgatan 2, 224 84 Lund

Mobile: +46 72 179 23 07

E-mail: simon.rose at ess.eu

 

 

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of liuxiaomin via Tech-talk <tech-talk at aps.anl.gov>
Reply to: liuxiaomin <liuxiaomin at sari.ac.cn>
Date: Tuesday, 11 October 2022 at 04:47
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Subject: modbus-tcp

 

 

Hi,

I am trying to control a device which can get the temperature values ,I used modbus_tk under python to get the value. In order to match with EPICS, I used the support module PyDevice which is an EPICS device support for Python interpreter, When I run the st.cmd file,the complete output when the IOC boots as follows:

 ./st.cmd

#!../../bin/linux-x86_64/waveioc

< envPaths

epicsEnvSet("IOC","waveioc")

epicsEnvSet("TOP","/home/iocusr/iocs/WAVEIOC")

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("PYDEVICE","/opt/PyDevice")

epicsEnvSet("EPICS_BASE","/opt/epics/base")

epicsEnvSet("EPICS_CA_SERVER_PORT", 5064))

epicsEnvSet("IOCNAME","waveioc")

cd "/home/iocusr/iocs/WAVEIOC"

## Register all support components

dbLoadDatabase "dbd/waveioc.dbd"

waveioc_registerRecordDeviceDriver pdbbase

Executing Python code: import pydev

Executing Python code: import builtins

Executing Python code: builtins.pydev=pydev

Executing Python code: import pydev

pydev("import sys; sys.path.insert(0,'/home/iocusr/iocs/WAVEIOC/iocBoot/waveioc')")

Executing Python code: import sys; sys.path.insert(0,'/home/iocusr/iocs/WAVEIOC/iocBoot/waveioc')

pydev("import modbus_tk")

Executing Python code: import modbus_tk

pydev("from wave import Temp")

Executing Python code: from wave import Temp

pydev("temp1 = Temp('192.168.0.11','502')")

Executing Python code: temp1 = Temp('192.168.0.11','502')

dbLoadRecords "db/dbWaveform.db", "user=waveioc"

# Configure IP port

# drvAsynIPPortConfigure("CAT1","10.40.15.9:502",0,0,1)

# Configure modbus

# modbusInterposeConfig("CAT1",ModbusLinkType,timeoutMsec,writeDelayMsec)

# drvModbusAsynConfigure("WORDIR","CAT1",slaveAddress,modbusFunction,modbusStartAddr,modbusLen,dataType,posMsec,"plcType")

cd "/home/iocusr/iocs/WAVEIOC/iocBoot/waveioc"

iocInit

Starting iocInit

############################################################################

## EPICS R7.0.5

## Rev. 2021-08-27T15:52+0800

############################################################################

sevr=info s7plcInit: no stations configured

drvStreamInit: Warning! STREAM_PROTOCOL_PATH not set. Defaults to "."

iocRun: All initialization complete

# List all PVs to PV information files.

#dbl >> ${PVINFOFILE}

epics> [31.1  0.   0.  ... 21.2  0.   0. ]

[31.1  0.   0.  ... 21.2  0.   0. ]

[31.1  0.   0.  ... 21.2  0.   0. ]

db[31.1  0.   0.  ... 21.2  0.   0. ]

l

waveioc:TEMP

waveioc:RISE

waveioc:PEAK

waveioc:GETDATA

​        epics> [31.   0.   0.  ... 21.4  0.1  0. ]

[31.   0.   0.  ... 21.4  0.1  0. ]

[31.   0.   0.  ... 21.4  0.1  0. ]

[31.   0.   0.  ... 21.4  0.1  0. ]

[31.   0.   0.  ... 21.4  0.1  0. ]

 

​Is there any way to prevent the epics terminal from automatically displaying the values obtained?

​