Dear Pete;
Have you tried 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
---------------------------------------
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fax: +44 (0)1925 603124
CLRC
Daresbury Laboratory
Keckwick Lane
Warrington
WA4 4AD
UK
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