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asecawy
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Join Date: Jun 2008
Location: Alexandria
Posts: 9
Good Answers: 1

PID Temperature Controller of Simatic S7

06/12/2008 2:02 AM

hey! i want to simulate the pid temp controller (Continuous Temperature Control with FB58 "TCONT_CP") on step7. Advices on how to configure it will be of great help.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: PID Temperature Controller of Simatic S7

06/12/2008 3:30 AM

There should be a PID function block, and details of how to configure it will be in the S7 manual.

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HoleInTheSnow
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Join Date: May 2008
Location: Europe
Posts: 285
Good Answers: 9
#2

Re: PID Temperature Controller of Simatic S7

06/13/2008 1:50 AM

Hi asecawy, try looking at

http://www.siemens.com/automation/service&support you will get alot of information here. If you post an email address then I can forward you on some manuals that I have that may or may not be of use.

Regards

Mr. W.A Snow
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Caesar
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Join Date: Aug 2007
Posts: 2
#3
In reply to #2

Re: PID Temperature Controller of Simatic S7

06/13/2008 3:51 AM

Hi Mr.W.A.Snow

This my E-mail address :gopalswamy233@yahoo.co.in

Is it possible to send the manuals seimens S7.

This will be great help for me.

Thanks and best regards

Caesar
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HoleInTheSnow
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#4
In reply to #3

Re: PID Temperature Controller of Simatic S7

06/13/2008 1:18 PM

Caeser,

I just emailed you a number of manuals/ documents that maybe useful. Let me know if these were useful or if you want more.

Kind Regards

Mr. W.A. Snow
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asecawy
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Join Date: Jun 2008
Location: Alexandria
Posts: 9
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#5
In reply to #2

Re: PID Temperature Controller of Simatic S7

06/15/2008 1:38 AM

dear Mr. W.A Snow

manuals is a great support for me, here is my e mail msakka@asecresearch.com.

I hope to find examples also.

regards,

asecawy

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asecawy
Member

Join Date: Jun 2008
Location: Alexandria
Posts: 9
Good Answers: 1
#6
In reply to #2

Re: PID Temperature Controller of Simatic S7

06/15/2008 1:48 AM

hi Mr. W.A Snow

this is my e mail address, msakka@asecresearch.com i think manuals will be very useful.

warm regards

asecawy.

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HoleInTheSnow
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#7
In reply to #6

Re: PID Temperature Controller of Simatic S7

06/15/2008 4:55 AM

Hi asecawy,

I just emailed a number of manuals and other info to you. Perhaps it maybe of use, if not then you can simply delete.

You will probably find more information and possibly more relevant information than this if you spend sometime going through the website that I pointed out in a previous response.

Let us know how you get on.

Kind Regards

Mr. W.A. Snow
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peterd
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Join Date: Dec 2005
Location: Willenhall, UK
Posts: 159
#8

Re: PID Temperature Controller of Simatic S7

06/23/2008 7:32 AM

in step use "CONT_C" control blocks. if you want bumpless auto/manual switchover then you need to write a bit of prog to make the manual data register track the auto register when the block is in auto and remember that all inputs are ranged 0 to 100. The ranging of the feedforward also needs thinking about.

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Anonymous Poster
#9
In reply to #8

Re: PID Temperature Controller of Simatic S7

07/18/2010 2:10 PM

Hi, I am working now with FB58 and it works fine, but it is not bumpless, even though the manual said the integral action and derivative action are set and synchronized internally to provide bumpless manual/auto transfer.

How do I "write a bit of prog to make the manual data register track the auto register when the block is in auto"..... The bump also appears when the controller is reset (OB100 do a complete restart of the FB58, so the PID is in manual every time the PLC is restarted) and is changed manually to auto.

Thanks a lot in advanced for any help.

Marisol :)
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Users who posted comments:

Anonymous Poster (1); asecawy (2); Caesar (1); HoleInTheSnow (3); peterd (1); PWSlack (1)

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