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question about CTRL_PID (FB61)

Created by: fabioga66 at: 2/15/2010 3:09 PM (5 Replies)

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2/15/2010 3:09 PM	Rate (0)
fabioga66 Bronze Member Joined: 3/25/2008 Last visit: 10/30/2024 Posts: 240 Rating: (2)	Hello friend's , I use a CTRL_PID into PCS7 7.0 . [schnippschnapp] 2'nd question Usually the operator adjust the SP_OP ( internal mode ). For process reasoni need to change the SP_OP only one time. For example at the startof plant, i wantrestore a defaultset point. After this the operator, can changhetheset point. The SP_OP is'nt linkable. I have change the S7_link attribute to true andi have linked a parameter, but is always write and the operator cannot change the sp How i can do? Thank you in advance
	Last edited by: O_Moderator at: 2/28/2010 4:55 PM new subject after splitting from /tf/WW/en/Posts/40284#top
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2/16/2010 5:52 AM	Rate (0)
daga Gold Member Joined: 3/18/2009 Last visit: 12/6/2024 Posts: 306 Rating: (94)	[schnippschnapp] capraloris Usually the operator adjust the SP_OP ( internal mode ). For process reasoni need to change the SP_OP only one time. For example at the startof plant, i wantrestore a defaultset point. After this the operator, can changhetheset point. The SP_OP is'nt linkable. I have change the S7_link attribute to true andi have linked a parameter, but is always write and the operator cannot change the sp How i can do? Instead of that, use the external SP input and bumplessly transfer to internal mode at startup.
	Last edited by: O_Moderator at: 2/28/2010 4:57 PM
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2/16/2010 3:26 PM	Rate (0)
CBo Gold Member Joined: 4/5/2006 Last visit: 12/12/2024 Posts: 917 Rating: (63)	Hi capraloris , in add what dagafor point nr. 2, it possible to use SFC to write value: just create a cyclic SFC writing tha value when condition satifyed -for example during startup-. regards

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6/23/2014 3:02 PM	Rate (0)
Narrator1 Bronze Member Joined: 3/25/2013 Last visit: 3/21/2019 Posts: 176 Rating: (1)	New question split intoapplication example using CTRL_PID. With best regards, Narrator1

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6/23/2014 4:48 PM	Rate (0)
Nih Posts: 24 Rating: (1)	Could you use a script in WinCC to write to the tag thta would otherwise be modified by the Op? This way there is no need to mess with the PLC code.
Nih Posts: 24 Rating: (1)
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7/7/2014 9:05 PM	Rate (0)
Evertom Scopim Bronze Member Joined: 12/23/2008 Last visit: 12/6/2024 Posts: 29 Rating: (6)	SP_Ext and SP_LiOp and check SP_int = SP_ext Check those inputs. SP_LiOp = 1 to make the program select the SP (SP_Ext). Make the SP_Op = SP_Ext (Bumpless change)

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