Experimental Physics and
Industrial Control System

Benjamin Franksen <[email protected]> · Mon, 16 Feb 2009 12:07:12 +0100

Hi,

it seems that CA output links do not work at all during PINI processing if 
the target record is on the same IOC.

The following simple database demonstrates this:

record(bo,"source") {
    field(PINI,"YES")
    field(VAL,"1")
    field(OUT,"target CA")
}
record(bo,"target") {
}

aragon: ~/tmp > camonitor -n source target
source                         *** Not connected (PV not found)
target                         *** Not connected (PV not found)
source                         2009-02-16 11:53:05.079778 1 LINK INVALID
target                         <undefined> 0 UDF INVALID

This is what the IOC says about the records after iocInit:

epics> dbpr target
ASG:                DESC:               DISA: 0             DISP: 0             
DISV: 1             NAME: target        RBV: 0              RVAL: 0             
SEVR: INVALID       STAT: UDF           TPRO: 0             VAL: 0              
epics> dbpr source
ASG:                DESC:               DISA: 0             DISP: 0             
DISV: 1             NAME: source        RBV: 0              RVAL: 1             
SEVR: INVALID       STAT: LINK          TPRO: 0             VAL: 1              

I think this is a bug, as I could not find any note on this behaviour in the 
Developer's Guide.

Cheers
Ben
-- 
"TDD replaces a type checker in Ruby in the same way that a
strong drink replaces sorrows."       (byorgey on #haskell)

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System