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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