Re: Control device via epics-snmp

["Priller, John via Tech-talk" <tech-talk at aps.anl.gov>]

You seem to be missing the last item on the OUT line, which is the SNMP format character to use when writing the value to the device.  That would be an 'i' for an integer or an 'F' for a float (yes, they use different case, no idea why).

So:

field(OUT,"@$(HOST) private $(MIB)::pduOutletSwitchedControlCommand.1.1  ( 100 i")

or if you wanted to use native format rather than strings, add the 'n' flag:

field(OUT,"@$(HOST) private $(MIB)::pduOutletSwitchedControlCommand.1.1  ( 100 in")

I'm assuming you're using my SNMP driver, which may be a mistake on my part because there are two other older ones out there.  But the documentation for mine is here:

https://groups.nscl.msu.edu/controls/files/devSnmp.html

---

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 20, 2024 4:20 AM
To: tech-talk at aps.anl.gov
Subject: Control device via epics-snmp

 

[EXTERNAL] This email originated from outside of FRIB

Hi，

I'm trying to control the device using the SNMP protocol. But I can caget to the value, when I caput, the value does not change.

 

the db file is as follows:

 

record(ao,"$(DEV):Switch1")

{

    field(DESC,"SNMP channel")

    field(DTYP,"Snmp")

    field(SCAN,"Passive")

    #field(PREC,"3")

    field(OUT,"@$(HOST) private $(MIB)::pduOutletSwitchedControlCommand.1.1  ( 100")

}

 

The mib file is as follows:

 

pduOutletSwitchedControlCommand OBJECT-TYPE

  -- FROM       ENLOGIC-PDU-MIB

  SYNTAX        INTEGER {immediateOff(1), immediateOn(2), delayedOff(3), delayedOn(4), immediateReboot(5), delayedReboot(6), outletUnknown(7)}

  MAX-ACCESS    read-write

  STATUS        current

  DESCRIPTION   "Getting this variable will return the outlet state.

                If the outlet is on, the immediateOn (2)

                value will be returned. If the outlet is off,

                the immediateOff (1) value will be returned. "

::= { iso(1) org(3) dod(6) internet(1) private(4) enterprises(1) enlogic(38446) pdu(1) pduOutlet(5) pduOutletSwitchedControlTable(5) pduOutletSwitchedControlEntry(1) pduOutletSwitchedControlCommand(4) 1 2 }

 

Is there an error somewhere in the db file?

Thanks