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<== Date ==> <== Thread ==>

Subject: RE: Initialising an ao record from a constant DOL
From: "Kim, Kukhee" <[email protected]>
To: "'Owens, PH \(Peter\)'" <[email protected]>, <[email protected]>
Date: Wed, 21 Apr 2004 14:27:11 +0900
Dear Pete;

Have you try to use closed_loop mode with constant DOL such as the
following.

record(ao, "$(device):SETSIZE") {
    field(DESC, "Pump Size")
    field(DTYP, "ornlSerial")
    field(OUT,  "@digitel mpc size p=1 u=$(port) m=$(unit) p1=$(pump)")
    field(PINI, "YES")
    field(DOL,  "100.0")
    field(OMSL, "closed_loop")
    field(EGU,  "l/s")
    field(DRVL, "0.0")
    field(DRVH, "1200.0")
    field(LOPR, "0.0")
    field(HOPR, "1200.0")
    field(PREC, "0")
}

-------------------------------

Kukhee Kim
Instrument & Control, KSTAR
Korea Basic Science Institute
52 Yeoeun-dong, Yusung-gu, Daejeon 305-333
Korea
Email: [email protected]
Tel: +82 42 870 1616     Fax: +82 42 870 1609      Cell: +82 17 513 4849

 


-----Original Message-----
From: Owens, PH (Peter) [mailto:[email protected]] 
Sent: Saturday, April 17, 2004 12:11 AM
To: [email protected]
Subject: Initialising an ao record from a constant DOL

I'm trying to initialise an analog output record
by putting a constant in the DOL field (see below).

But the VAL field gets set to zero rather than 100.
The record does process and outputs this zero.

I can work around this by Initialising from another record
using clsed loop mode but it does seem to be a bit of a cludge
(see commented out lines).

What am I doing wrong?

record(ao, "$(device):SETSIZE") {
    field(DESC, "Pump Size")
    field(DTYP, "ornlSerial")
    field(OUT,  "@digitel mpc size p=1 u=$(port) m=$(unit) p1=$(pump)")
    field(PINI, "YES")
    field(DOL,  "100.0")
#    field(DOL,  "$(device):INITSIZE")
#    field(OMSL, "closed_loop")
    field(EGU,  "l/s")
    field(DRVL, "0.0")
    field(DRVH, "1200.0")
    field(LOPR, "0.0")
    field(HOPR, "1200.0")
    field(PREC, "0")
}
record(ai, "$(device):INITSIZE") {
    field(VAL, "200.0")
}

Pete
---------------------------------------
mailto:[email protected]
phone:+44 (0)1925 603974
fax:    +44 (0)1925 603124

CLRC
Daresbury Laboratory
Keckwick Lane
Warrington
WA4 4AD
UK




References:
Initialising an ao record from a constant DOL Owens, PH (Peter)

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