Re: [foxboro] Ramp Question
- From: "Johnson, Alex (Foxboro)" <ajohnson@xxxxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Wed, 12 Jan 2005 12:03:33 -0500
The ramp rate is different for the two ramp buttons.
What bumps to you get with each of the two buttons?
Regards,
=20
Alex Johnson
Invensys Process Systems
Invensys Systems, Inc.
10707 Haddington
Houston, TX 77043
713.722.2859 (voice)
713.722.2700 (switchboard)
713.932.0222 (fax)
ajohnson@xxxxxxxxxxx
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx =
[mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of IQUEIROLOO@xxxxxxxxxxxxx
Sent: Wednesday, January 12, 2005 10:51 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Ramp Question
I supposed that, but in my application I have a percent control range =
of 5.0
and when I pick the ramp the variable goes 0.5 from the last value. If =
the
DM assumed this percentage (5.0) of the 0-100 span, I think that the
variable would move 5.0 not 0.5 from the last value because is the 5 =
percent
of 100. Am I right?
=20
Regards,
=20
Ignacio Queirolo Olivera
Control Avanzado
Complejo Industrial Ensenada
Repsol YPF - Qu=EDmica
Tel.: 54 221 429-8400 ext. 26481
Fax: 54 221 429-8400 ext. 26209
iqueiroloo@xxxxxxxxxxxxx <mailto:iqueiroloo@xxxxxxxxxxxxx>=20
=20
Re: [foxboro] Ramp Question
* From: "Johnson, Alex (Foxboro)" <ajohnson@xxxxxxxxxxx>=20
* To: foxboro@xxxxxxxxxxxxx=20
* Date: Tue, 11 Jan 2005 15:56:14 -0500=20
The Rxy parameters are OM objects that contain 3 floating point values.
=20
Rxy[0] - High scale - HSCxy
Rxy[1] - Low scale - LSCxy
Rxy[2] - Change Delta - DELTxy
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The DM/FV is smart enough to set the big (double arrow) and small =3D
(single
arrow) ramp buttons to a percentage of the span IF the Rxy parameter is
specified on the tag name, e.g.,=3D20
=20
C:B.SPT|RI1
=20
Might be used for a PIDA block setpoint ramp.
=20
=20
If the Rxy parameter is not specified, 0-100 is assumed and the RAMP =
=3D
buttons
will use a percentage of that span.
=20
=20
Does this help?
=20
Regards,
=3D20
Alex Johnson
Invensys Process Systems
Invensys Systems, Inc.
10707 Haddington
Houston, TX 77043
713.722.2859 (voice)
713.722.2700 (switchboard)
713.932.0222 (fax)
ajohnson@xxxxxxxxxxx
=20
=20
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