Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	RE: PINI field not working with modbus
From:	Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>
To:	"Marco A. Barra Montevechi Filho" <marco.filho at lnls.br>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Tue, 26 Jul 2022 23:37:13 +0000

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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Replies:: 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

References:: 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

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ANJ, 14 Sep 2022

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System