Re:Re: epics snmp

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

Thank you for your  help，I changed the port to 5064. Now I have a new problem. 

The value I get with the snmpget command is 219:

snmpget -v1 -c public 192.168.0.1 ENLOGIC-PDU-MIB::pduInputPhaseSTATUSEntry.6.1.1

ENLOGIC-PDU-MIB::pduInputPhaseSTATUSVoltage.1.1 = INTEGER: 219

 

The value obtained with caget is 0, which does not match the actual value:

caget  TEST:Voltage

TEST:Voltage      0

 

The db file is as follows:

 

record(ai,"$(DEV):Voltage")

{

    field(DESC,"SNMP channel")

    field(DTYP,"Snmp")

    field(SCAN,".2 second")

    field(PREC,"3")

    field(INP,"@$(HOST) public $(MIB)::pduInputPhaseSTATUSVoltage.1.1 Float 100")

}

 

The mib file is as follows:

pduInputPhaseSTATUSVoltage OBJECT-TYPE

  -- FROM       ENLOGIC-PDU-MIB

  SYNTAX        Integer32

  MAX-ACCESS    read-only

  STATUS        current

  DESCRIPTION   "Returns the voltage, in Volts(V)"

::= { pduInputPhaseSTATUSEntry 6 }

Is there an error somewhere in the db file?

Thanks,

White

At 2024-03-13 18:30:54, "Priller, John via Tech-talk" <tech-talk at aps.anl.gov> wrote:

It doesn't appear to be related to SNMP (that's my driver, if you need help with it), it looks like the issue is you're changing the EPICS_CA_SERVER_PORT in your st.cmd.  

By default, caget is going to use port 5064.  Do you also set an environment variable for this in the console you're running caget in?

To make doubly sure that your IOC does in fact have a TEST:Current record, what are the results of a "dbl" command in your IOC's shell?  You can add the dbl command to the end of your st.cmd to check the output from that, if you're not running the IOC with an active shell under procServ or similar.

---

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of White via Tech-talk <tech-talk at aps.anl.gov>
Sent: Wednesday, March 13, 2024 4:44 AM
To: tech-talk at aps.anl.gov
Subject: epics snmp

 

[EXTERNAL] This email originated from outside of FRIB

Hi，

I'm trying to control the device using the SNMP protocol and the db file is as follows:

 

record(ai,"$(DEV):Current")

{

    field(DESC,"SNMP channel")

    field(DTYP,"Snmp")

    field(SCAN,".2 second")

    field(PREC,"3")

    field(INP,"@$(HOST) public $(MIB)::pduInputPhaseSTATUSCurrent.1.1 Float 100")

}

 

The st.cmd file are as follows:

< envPaths

 

epicsEnvSet("EPICS_CA_SERVER_PORT", 6310)

epicsEnvSet("EPICS_PVA_SERVER_PORT", 6710)

epicsEnvSet("MIBDIRS", "+$(TOP)/mibs:/usr/local/share/snmp/mibs")

epicsEnvSet("IOCNAME","npdu")

cd "${TOP}"

## Register all support components

dbLoadDatabase "dbd/npdu.dbd"

npdu_registerRecordDeviceDriver pdbbase

devSnmpSetSnmpVersion(192.168.0.1:161,SNMP_VERSION_1)

devSnmpSetMaxOidsPerReq(192.168.0.1:161,50)

dbLoadRecords "db/dbpdux.db", "DEV=TEST, HOST=192.168.0.1, MIB=ENLOGIC-PDU-MIB"

cd "${TOP}/iocBoot/${IOC}"

iocInit

But there is an error:

 caget TEST:Current

Channel connect timed out: 'TEST:Current' not found.

If there is no error in the DB, the device is not connected, is there an error in the st.cmd file?

Thanks,

White