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<== Date ==> <== Thread ==>
Subject: Re: PINI field not working with modbus
From: "Marco A. Barra Montevechi Filho via Tech-talk" <tech-talk at aps.anl.gov>
To: Mark Rivers <rivers at cars.uchicago.edu>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date: Wed, 27 Jul 2022 11:53:38 +0000
Hi Mark!

I did the recommended and append the results below. I also commented every modbus function that was not
NEG_EMODBUS_1_1_Rd_VTarget
 and every record that was not
${BL}:${H}:${EQ}:TargetVoltRead
so i could focus the debug on this. Using wireshark captures and filtering by the device I.P., i noticed something interesting (I append the capture files in this e-mail): even when TargetVoltRead SCAN is set to Passive, my computer keeps sending modbusTCP queries for the device and it even gets the answer. Should that be happening? It seems to me that the only difference between Passive and 1 Second scan is that passive doesnt store the queried info in the database while 1 second scan does, but both query the device. 

About the recommended debug: my st.cmd file now looks like:

#!/home/marco/work/cnpem_git/LCI/NEGPowerMINI/bin/linux-x86_64/NEG

< /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG/envPaths
epicsEnvSet("BL","LCI")
epicsEnvSet("H","X")
epicsEnvSet("EQ","NEGPowerMINI")
epicsEnvSet("IOCNAME","NEG")

# Configuração da linha de luz
< /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG/NEG.config
epicsEnvSet("STREAM_PROTOCOL_PATH","${TOP}/db")

cd ${TOP}

## Register all support components
dbLoadDatabase "dbd/NEG.dbd"
NEG_registerRecordDeviceDriver pdbbase

drvAsynIPPortConfigure("EMODBUS","10.20.41.90:502",0,0,1)
modbusInterposeConfig("EMODBUS",0,3000,0)
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_SoftwareVersion", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ}, 0x1000, 1,  2, ${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_HardwareVersion", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x1002,1,2,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_PowerSuppIntState", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2000,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_LoggingState", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2001,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_SysUptime", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2002,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_InternalTemperature", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2004,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_PumpTemperature", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2005,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_OutVolt", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2006,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_OutCurr", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2007,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_TimeRunning", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2008,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_Alarms", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200A,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_TempAlarms", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200C,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_WorkTime", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200E,2,0,${MBUS_POLL}, "");
drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_VTarget", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x3000,1,0,${MBUS_POLL}, "");
asynSetTraceMask NEG_EMODBUS_1_1_Rd_VTarget -1 9
dbLoadRecords("db/dbNEG.db", "BL=${BL}, H=${H}, EQ=${EQ}")

cd ${TOP}/iocBoot/${IOC}
iocInit


the resumed output, along with the typed dbpf is below. Interestingly, after the dbpf, cagetting into te record retrieved its right value: 12, and not 0.

iocRun: All initialization complete
## Start any sequence programs
#seq sncxxx,"user=gabrielfedelHost"
epics> 2022/07/27 11:48:18.848 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:19.879 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:20.905 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:21.932 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

dbpf LCI:X:NEGPowerMINI:TargetVoltRead 2
DBR_DOUBLE:         2                  
epics> 2022/07/27 11:48:22.528 drvModbusAsyn::readInt32 port NEG_EMODBUS_1_1_Rd_VTarget function=0x3, offset=00, value=0x4b0
2022/07/27 11:48:22.963 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:23.994 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:25.025 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS


I dont think there is any new info in the following but if needed: the complete ioc init log output is:

#!/home/marco/work/cnpem_git/LCI/NEGPowerMINI/bin/linux-x86_64/NEG
< /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG/envPaths
epicsEnvSet("IOC","iocNEG")
epicsEnvSet("TOP","/home/marco/work/cnpem_git/LCI/NEGPowerMINI")
epicsEnvSet("NFS","/usr/local/epics-nfs")
epicsEnvSet("SUPPORT","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support")
epicsEnvSet("ASYN","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/asyn-R4-33")
epicsEnvSet("STREAM","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/stream-R2-7-7c")
epicsEnvSet("MODBUS","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/modbus-R2-11")
epicsEnvSet("AUTOSAVE","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/autosave-R5-9")
epicsEnvSet("EPICS_BASE","/usr/local/epics-nfs/base/R3.15.6")
epicsEnvSet("ALIVE","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/alive-R1-1-0")
epicsEnvSet("BUSY","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/busy-R1-7")
epicsEnvSet("CALC","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/calc-R3-7-1")
epicsEnvSet("CAMAC","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/camac-R2-7-1")
epicsEnvSet("CAPUTRECORDER","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/caputRecorder-R1-7-1")
epicsEnvSet("DAC128V","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/dac128V-R2-9")
epicsEnvSet("DELAYGEN","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/delaygen-R1-2-0")
epicsEnvSet("DXP","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/dxp-R5-0")
epicsEnvSet("DXPSITORO","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/dxpSITORO-R1-1")
epicsEnvSet("DEVIOCSTATS","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/iocStats-3-1-15")
epicsEnvSet("IP","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/ip-R2-19-1")
epicsEnvSet("IPAC","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/ipac-2-15")
epicsEnvSet("IP330","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/ip330-R2-9")
epicsEnvSet("IPUNIDIG","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/ipUnidig-R2-11")
epicsEnvSet("LOVE","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/love-R3-2-6")
epicsEnvSet("LUA","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/lua-R1-2-2")
epicsEnvSet("MCA","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/mca-R7-7")
epicsEnvSet("MEASCOMP","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/measComp-R2-1")
epicsEnvSet("MODBUS_2_10_1","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/modbus-R2-10-1")
epicsEnvSet("MOTOR","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/motor-R6-10-1")
epicsEnvSet("OPTICS","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/optics-R2-13-1")
epicsEnvSet("QUADEM","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/quadEM-R9-1")
epicsEnvSet("SOFTGLUE","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/softGlue-R2-8-1")
epicsEnvSet("SOFTGLUEZYNQ","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/softGlueZynq-R2-0-1")
epicsEnvSet("SSCAN","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/sscan-R2-11-1")
epicsEnvSet("STD","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/std-R3-5")
epicsEnvSet("VAC","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/vac-R1-7")
epicsEnvSet("VME","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/vme-R2-9")
epicsEnvSet("YOKOGAWA_DAS","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/Yokogawa_DAS-R1-0-0")
epicsEnvSet("XXX","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/xxx-R6-0")
epicsEnvSet("AREA_DETECTOR","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/areaDetector-R3-3-1")
epicsEnvSet("ADCORE","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/areaDetector-R3-3-1/ADCore")
epicsEnvSet("ADSUPPORT","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/areaDetector-R3-3-1/ADSupport")
epicsEnvSet("ADSIMDETECTOR","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/areaDetector-R3-3-1/ADSimDetector")
epicsEnvSet("SNCSEQ","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/seq-2-2-5")
epicsEnvSet("ALLEN_BRADLEY","/usr/local/epics-nfs/modules/R3.15.6/synApps/R6.0/support/allenBradley-2-3")
epicsEnvSet("BL","LCI")
epicsEnvSet("H","X")
epicsEnvSet("EQ","NEGPowerMINI")
epicsEnvSet("IOCNAME","NEG")
# Configuração da linha de luz
< /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG/NEG.config
epicsEnvSet("E_SHM","eurotherm")
epicsEnvSet("MBUS_SL_ADDR",1)
epicsEnvSet("MBUS_READ",3)
epicsEnvSet("MBUS_WRITE",6)
epicsEnvSet("MBUS_POLL",1000)
epicsEnvSet("STREAM_PROTOCOL_PATH","/home/marco/work/cnpem_git/LCI/NEGPowerMINI/db")
cd /home/marco/work/cnpem_git/LCI/NEGPowerMINI
## Register all support components
dbLoadDatabase "dbd/NEG.dbd"
NEG_registerRecordDeviceDriver pdbbase
#######NOT USED ANYMORE. KEEPING FOR HISTORICAL REASONS###
## Configured by http://cars9.uchicago.edu/software/epics/modbusDoc.html
## Parameters to ModBus on /dev/ttyUSB0
## used to USB
#drvAsynSerialPortConfigure("EMODBUS","10.20.41.90:4001",0,0,0)
drvAsynIPPortConfigure("EMODBUS","10.20.41.90:502",0,0,1)
########NOT USED ANYMORE. KEEPING FOR HISTORICAL REASONS###
# Set up ASYN HYPPIE ports
# pxiCreateSM(asyn, shared memory name)
# drvasynPXIConfig(port, COM port, shared memory name, serial type)
#asynSetOption("EMODBUS", 0, "${BAUD}", "9600")                  
#asynSetOption("EMODBUS", 0, "bits", "8")                      
#asynSetOption("EMODBUS", 0, "parity", "none")                
#asynSetOption("EMODBUS", 0, "stop", "1")                      
###############################################################################
###############################################################################
## Configure
modbusInterposeConfig("EMODBUS",0,3000,0)
# drvModbusAsynConfigure(portName,      => create a name
#                       tcpPortName,    => defined before
#                       slaveAddress,   => defined on equipament
#                       modbusFunction, => 3 : Read Holding Register (16-bit)
#                       modbusStartAddress, => adress of register
#                       modbusLength,  => the length of data segment
#                       dataType,  => default data type
#                       pollMsec,
#                       plcType);     => Equipament name, not used
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_SoftwareVersion", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ}, 0x1000, 1,2, ${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_HardwareVersion", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x1002,1,2,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_PowerSuppIntState", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2000,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_LoggingState", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2001,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_SysUptime", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2002,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_InternalTemperature", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2004,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_PumpTemperature", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2005,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_OutVolt", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2006,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_OutCurr", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2007,1,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_TimeRunning", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2008,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_Alarms", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200A,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_TempAlarms", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200C,2,0,${MBUS_POLL}, "");
# drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_WorkTime", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200E,2,0,${MBUS_POLL}, "");
drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_VTarget", "EMODBUS", 1,3,0x3000,1,0,1000, "");
asynSetTraceMask NEG_EMODBUS_1_1_Rd_VTarget -1 9
#drvModbusAsynConfigure("NEG_EMODBUS_1_1_Wr_VTarget", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_WRITE},0x3000,1,0,${MBUS_POLL}, "");
## Load record instances
dbLoadRecords("db/dbNEG.db", "BL=LCI, H=X, EQ=NEGPowerMINI")
cd /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG
iocInit
Starting iocInit
############################################################################
## EPICS R3.15.6
## EPICS Base built Sep 27 2021
############################################################################
2022/07/27 11:48:18.322 drvModbusAsyn::readInt32 port NEG_EMODBUS_1_1_Rd_VTarget function=0x3, offset=00, value=0x0
iocRun: All initialization complete
## Start any sequence programs
#seq sncxxx,"user=gabrielfedelHost"
epics> 2022/07/27 11:48:18.848 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:19.879 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:20.905 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:21.932 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

dbpf LCI:X:NEGPowerMINI:TargetVoltRead 2
DBR_DOUBLE:         2                  
epics> 2022/07/27 11:48:22.528 drvModbusAsyn::readInt32 port NEG_EMODBUS_1_1_Rd_VTarget function=0x3, offset=00, value=0x4b0
2022/07/27 11:48:22.963 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:23.994 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/27 11:48:25.025 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

As always, thanks for the help.


Marco

From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: 26 July 2022 20:37
To: Marco A. Barra Montevechi Filho <marco.filho at lnls.br>; tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: RE: PINI field not working with modbus
 

Hi Marco,

 

Please start the IOC with TargetVoltRead.SCAN=Passive and .PINI=YES.  Set the asynTraceMask for the NEG_EMODBUS_1_1_Rd_VTarget driver to 9, but do that immediately after you create the driver, not at the end of the startup script.  Then when the startup is complete type the following command and send the output.  Also send the output of all driver trace messages that occur before you type dbpf.

 

dbpf TargetVoltRead 2

 

Of course you need to add all of the prefixes for TargetVoltRead.

 

Mark

 

From: Marco A. Barra Montevechi Filho <marco.filho at lnls.br>
Sent: Tuesday, July 26, 2022 9:10 AM
To: Mark Rivers <rivers at cars.uchicago.edu>; tech-talk at aps.anl.gov
Subject: Re: PINI field not working with modbus

 

Of course!

it is defined in the st.cmd as:

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_VTarget", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x3000,1,0,${MBUS_POLL}, "");


I append the full st.cmd file below. I also tried to define other functions PINI to YES and FNLK to "${BL}:${H}:${EQ}:TargetVoltRead", but to no avail.

Any suggestions on how to improve the st.cmd are also welcome.

#!/home/marco/work/cnpem_git/LCI/NEGPowerMINI/bin/linux-x86_64/NEG

< /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG/envPaths

epicsEnvSet("BL","LCI")

epicsEnvSet("H","X")

epicsEnvSet("EQ","NEGPowerMINI")

epicsEnvSet("IOCNAME","NEG")

 

# Configuração da linha de luz

< /home/marco/work/cnpem_git/LCI/NEGPowerMINI/iocBoot/iocNEG/NEG.config

epicsEnvSet("STREAM_PROTOCOL_PATH","${TOP}/db")

 

cd ${TOP}

 

## Register all support components

dbLoadDatabase "dbd/NEG.dbd"

NEG_registerRecordDeviceDriver pdbbase

 

drvAsynIPPortConfigure("EMODBUS","10.20.41.90:502",0,0,1)

 

########NOT USED ANYMORE. KEEPING FOR HISTORICAL REASONS###

# Set up ASYN HYPPIE ports

# pxiCreateSM(asyn, shared memory name)

# drvasynPXIConfig(port, COM port, shared memory name, serial type)

 

#asynSetOption("EMODBUS", 0, "${BAUD}", "9600")                  

#asynSetOption("EMODBUS", 0, "bits", "8")                      

#asynSetOption("EMODBUS", 0, "parity", "none")                

#asynSetOption("EMODBUS", 0, "stop", "1")                      

 

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

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

 

## Configure

modbusInterposeConfig("EMODBUS",0,3000,0)

 

# drvModbusAsynConfigure(portName,      => create a name

#                       tcpPortName,    => defined before

#                       slaveAddress,   => defined on equipament

#                       modbusFunction, => 3 : Read Holding Register (16-bit)

#                       modbusStartAddress, => adress of register

#                       modbusLength,  => the length of data segment

#                       dataType,  => default data type

#                       pollMsec,

#                       plcType);     => Equipament name, not used

 

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_SoftwareVersion", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ}, 0x1000, 1,    2, ${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_HardwareVersion", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x1002,1,2,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_PowerSuppIntState", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2000,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_LoggingState", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2001,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_SysUptime", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2002,2,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_InternalTemperature", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2004,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_PumpTemperature", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2005,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_OutVolt", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2006,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_OutCurr", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2007,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_TimeRunning", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x2008,2,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_Alarms", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200A,2,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_TempAlarms", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200C,2,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_WorkTime", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x200E,2,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Rd_VTarget", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_READ},0x3000,1,0,${MBUS_POLL}, "");

drvModbusAsynConfigure("NEG_EMODBUS_1_1_Wr_VTarget", "EMODBUS", ${MBUS_SL_ADDR},${MBUS_WRITE},0x3000,1,0,${MBUS_POLL}, "");

 

## Load record instances

dbLoadRecords("db/dbNEG.db", "BL=${BL}, H=${H}, EQ=${EQ}")

 

cd ${TOP}/iocBoot/${IOC}

iocInit


Thanks for the help 🙂

Marco

From: Mark Rivers <rivers at cars.uchicago.edu>
Sent: 26 July 2022 10:33
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>; Marco A. Barra Montevechi Filho <marco.filho at lnls.br>
Subject: Re: PINI field not working with modbus

 

Hi Marco,

 

Can you show us how the NEG_EMODBUS_1_1_Rd_VTarget port is configured?

 

Mark

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Marco A. Barra Montevechi Filho via Tech-talk <tech-talk at aps.anl.gov>
Sent: Tuesday, July 26, 2022 7:45 AM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: PINI field not working with modbus

 

Hello all.

I have an analog in record for reading a modbus register from a device. The record is defined as follows:

record(ai, "${BL}:${H}:${EQ}:TargetVoltRead"){  

    field(DESC, "Voltage set on target [V].")

    field(DTYP, "asynInt32")

    field(EGU, "V")

    field(ASLO, 0.01)

    field(INP, "@asyn(NEG_EMODBUS_1_1_Rd_VTarget,0,1000)MODBUS_DATA")

    field(SCAN, "1 second")

}


Which reads fine. However, if i set the PINI field to YES and the scan to passive:

record(ai, "${BL}:${H}:${EQ}:TargetVoltRead"){  

    field(DESC, "Voltage set on target [V].")

    field(DTYP, "asynInt32")

    field(EGU, "V")

    field(ASLO, 0.01)

    field(INP, "@asyn(NEG_EMODBUS_1_1_Rd_VTarget,0,1000)MODBUS_DATA")

    field(SCAN, "Passive")

    field(PINI, "YES")

}



i get only 0 as value when cagetting the PV. Am i doing something wrong?

Thanks in advance.

Marco

 

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Attachment: capture_passive_scan.pcapng
Description: capture_passive_scan.pcapng

Attachment: capture_1_second_scan.pcapng
Description: capture_1_second_scan.pcapng

Replies:
Re: PINI field not working with modbus Mark Rivers via Tech-talk
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PINI field not working with modbus Marco A. Barra Montevechi Filho via Tech-talk
Re: PINI field not working with modbus Mark Rivers via Tech-talk
Re: PINI field not working with modbus Marco A. Barra Montevechi Filho via Tech-talk
RE: PINI field not working with modbus Mark Rivers via Tech-talk
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