I think this is the DELTO1 parameter in the PIDA, which specifies the minimum
output change (in percent of full-scale) for the downstream block to see the
change. This should have no effect if the two blocks are in the same CP (that
is, all changes in PIDA.OUT should propagate to an ROUT.MEAS parameter in the
same CP), but you would need to set DELTO1 probably to zero if the ROUT is in a
different CP. It might be worth setting this parameter to zero in the PIDA
anyway, to check if it makes a difference.
Hope this helps.
Julian Pye
Process Development Leader
William Grant & Sons Distillers Ltd
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Maria Baumgartner
Sent: 21 March 2017 10:32
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] minimum step of 0.01 - where is this setting?
Hello dear list, I quite often have the problem, a PIDA wants to set a
ROUT block from 0.002 to 0.0. This action cannot be done as I was told there is
a minimum step limit of 0.01 somewhere. Then the PIDA has to be set to manual,
OUT is set to 0.02 and then to zero. Is there a way to edit this
0.01step limit? Where can I find this setting? best regards Baumgartner
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