Re: PINI field not working with modbus

["Marco A. Barra Montevechi Filho via Tech-talk" <tech-talk at aps.anl.gov>]

Adding a few things i found out, if it helps in anything:

I added

> asynSetTraceMask NEG_EMODBUS_1_1_Rd_VTarget -1 9

To the end of my st.cmd file. The resulting behavior is not what i expected. When i set my record to

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")

    field(PINI, "YES")

    field(PRIO, "LOW")

}

i run the st.cmd and get constant 1-second-periodic updates such as:

iocRun: All initialization complete

#create_monitor_set("/usr/local/epics/apps/config/NEG/NEG_save_restore.req", 5, "BL=${BL}, H=${H}, EQ=${EQ}")

## Start any sequence programs

#seq sncxxx,"user=gabrielfedelHost"

epics> 2022/07/26 18:41:18.535 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/26 18:41:18.535 drvModbusAsyn::readInt32 port NEG_EMODBUS_1_1_Rd_VTarget function=0x3, offset=00, value=0x4b0

2022/07/26 18:41:19.114 drvModbusAsyn::readInt32 port NEG_EMODBUS_1_1_Rd_VTarget function=0x3, offset=00, value=0x4b0

2022/07/26 18:41:19.583 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/26 18:41:20.114 drvModbusAsyn::readInt32 port NEG_EMODBUS_1_1_Rd_VTarget function=0x3, offset=00, value=0x4b0

2022/07/26 18:41:20.631 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

and so on...
However, when i change my record scan to "Passive", i still get 1-second-periodic updates, but now in the format:

iocRun: All initialization complete

#create_monitor_set("/usr/local/epics/apps/config/NEG/NEG_save_restore.req", 5, "BL=${BL}, H=${H}, EQ=${EQ}")

## Start any sequence programs

#seq sncxxx,"user=gabrielfedelHost"

epics> 2022/07/26 18:44:34.525 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/26 18:44:35.567 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/26 18:44:36.602 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/26 18:44:37.650 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

2022/07/26 18:44:38.697 drvModbusAsyn::doModbusIO port NEG_EMODBUS_1_1_Rd_VTarget READ_REGISTERS

even if the PINI field is in Passive. Am i supposed to receive this message every second even though there is no scan for this record? And it seems the modbus function was never actually called. Why is that?

Thanks for the help,

Marco

---

From: Marco A. Barra Montevechi Filho <marco.filho at lnls.br>
Sent: 26 July 2022 11:09
To: Mark Rivers <rivers at cars.uchicago.edu>; tech-talk at aps.anl.gov <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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