Re: [foxboro] Unlinked Input Secured Error

Jeff,

You should also read the specifications for LOCSW and REMSW. These two 
parameters may give you much more flexibility for controlling the local or 
remote setpoint than merely using the LR parameter.

Terry Doucet, Eng.

Objet : Re: [foxboro] Unlinked Input Secured Error

Do you want it to "control" down to zero, or go immediately to zero?

Control down: tie the .rsp to a register in another block that has a zero value.

Go down fast: instead of the LR use tracking, with tracking you can use 0.0.

I use the last method on a few flow loops, I use tracking to rapidly open the 
valve to 25%, 
then when the pump has settled, turn tracking off and the PIDA starts 
controlling from 25 instead of 0.

Ken Moore
Celanese 

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On 
Behalf Of Jeff Hurt
Sent: Friday, August 22, 2008 1:48 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Unlinked Input Secured Error

I received this error after making a new connection.  Can anyone tell me what 
this error means?  I made a boolean connection to the LR parameter on a PIDA 
block.  I have RSP set to 0.0 in the block.  When LR goes true, I want the 
setpoint to become 0.  What am I missing here?
 
Thanks,
Jeff
 
 
 
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