Experimental Physics and
Industrial Control System

Mark Rivers <[email protected]> · Thu, 6 Nov 2014 11:35:31 +0000

The record fields right after iocInit:  SEVR: INVALID       STAT: READ 

Could it be that your driver returned an error status on the read that occurred during iocInit?  Can you turn on debugging in the driver to see what happened the first time that the record processed?

Mark

________________________________________
From: [email protected] [[email protected]] on behalf of Jörn Wüstenfeld [[email protected]]
Sent: Thursday, November 06, 2014 5:31 AM
To: [email protected]
Subject: Re: Record processing during iocInit?

Hi,

I looked now with TPRO set to "1" for one variable and this is what I get
during initialization of the ioc:

>############################################################################
>## EPICS R3.14.12.4 $Date: Mon 2013-12-16 15:51:45 -0600$
>## EPICS Base built Apr 30 2014
>############################################################################
>_main_: Process CRPC:HZDR:VME:CR1:psSerial
>iocRun: All initialization complete
>epics> dbpr CRPC:HZDR:VME:CR1:psSerial
>ASG:                DESC: PS serial number                  DISA: 0
>DISP: 0             DISV: 1             NAME: CRPC:HZDR:VME:CR1:psSerial
>SEVR: INVALID       STAT: READ          SVAL:               TPRO: 1
>VAL:
>epics>

Now looking at the variable in detail:
epics> dbpr CRPC:HZDR:VME:CR1:psSerial 5
>ACKS: INVALID       ACKT: YES           APST: On Change     ASG:
>ASP: (nil)          BKPT: 00            DESC: PS serial number
>DISA: 0             DISP: 0             DISS: NO_ALARM      DISV: 1
>DPVT: 0x5d10a0      DSET: 0xb6bd7558    DTYP: Snmp          EVNT: 0
>FLNK:CONSTANT 0
>INP:INST_IO @fwkmg097 $(WCR_PREF)psSerialNumber.0 STRING: 100 s
>LCNT: 0             LSET: 0x5d19f8
>MLIS: 00 00 00 00 00 00 00 00 00 00 00 00                   MLOK: 90 29 54 00
>MPST: On Change     NAME: CRPC:HZDR:VME:CR1:psSerial        NSEV: NO_ALARM
>NSTA: NO_ALARM      OVAL:               PACT: 0             PHAS: 0
>PINI: YES           PPN: (nil)          PPNR: (nil)         PRIO: LOW
>PROC: 0             PUTF: 0             RDES: 0x5299f0      RPRO: 0
>RSET: 0xb6b989d4    SCAN: Passive       SDIS:CONSTANT       SEVR: INVALID
>SIML:CONSTANT       SIMM: NO            SIMS: NO_ALARM      SIOL:CONSTANT
>SPVT: (nil)         STAT: READ          SVAL:
>TIME: 2014-11-06 12:22:21.393529070     TPRO: 1             TSE: 0
>TSEL:CONSTANT       UDF: 0              VAL:
It looks like it's processed during initialization, but no acces to the real
hardware is done.

And now triggering the variable:

epics> dbtr CRPC:HZDR:VME:CR1:psSerial
>_main_: Process CRPC:HZDR:VME:CR1:psSerial
>ACKS: INVALID       ACKT: YES           APST: On Change     ASG:
>BKPT: 00            DESC: PS serial number                  DISA: 0
>DISP: 0             DISS: NO_ALARM      DISV: 1             DTYP: Snmp
>EVNT: 0             FLNK:CONSTANT 0
>INP:INST_IO @fwkmg097 $(WCR_PREF)psSerialNumber.0 STRING: 100 s
>LCNT: 0             MPST: On Change     NAME: CRPC:HZDR:VME:CR1:psSerial
>NSEV: NO_ALARM      NSTA: NO_ALARM      OVAL: 4089008       PACT: 0
>PHAS: 0             PINI: YES           PRIO: LOW           PROC: 0
>PUTF: 0             RPRO: 0             SCAN: Passive       SDIS:CONSTANT
>SEVR: NO_ALARM      SIML:CONSTANT       SIMM: NO            SIMS: NO_ALARM
>SIOL:CONSTANT       STAT: NO_ALARM      SVAL:
>TIME: 2014-11-06 12:25:55.567251857     TPRO: 1             TSE: 0
>TSEL:CONSTANT       UDF: 0              VAL: 4089008

Now the value is realy read from the hardware. Why not during initialization?

Regards,
Jörn

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System