5/27/2014 5:14 PM | |
Posts: 510 Rating:
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In your graphic, COM_RST is On. This is a complete restart which initializes the block. Turn it off and you should get an output. Good Luck, billwest |
5/27/2014 6:34 PM | |
Joined: 7/17/2011 Last visit: 3/20/2024 Posts: 20 Rating:
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Dear All, I think my COM_RST is off, as the signal "Circul_Pump6.1_On_DI" is on and I take a negation for it.
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5/27/2014 7:46 PM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating:
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Hello billwest Edrichas used an Inverted signal at COM_RST so the actual signal sensed by FB41 is '0' , which is perfectly fine.
Hello Edric pl check the following : Keep the"EN" ( Enable ) signal - connected to "1" LMN_LLM and LMN_HLM - Output Value Minimum and Maximum values are not visible in your screenshot. Pl check ( default is 0% and 100% ) TI ( Integral Time is set to 50 minutes Pl check if this will solve your problem Hope this helps Cheers Navnag |
There is no such thing as the last bug in a program |
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5/27/2014 8:39 PM | |
Joined: 1/28/2009 Last visit: 8/26/2024 Posts: 6846 Rating:
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I think it is not logical to discuss based on a brief snpashots of an FBD block.To judge with the whole details,I suggest all list of possible signals in a list in a VAT: COM_RST MAN_ON PVPER_ON SP_INT PV_IN MAN LMN_HLM LMN_LLM LMN_P LMN_I PV ER There are some scenarios for always zero in LMN:
PID is simple math with several parameters to be considered all together in a table! |
Last edited by: hdhosseini at: 5/27/2014 9:05 PM// Dear Navnag, I didn''t ask a question.I have no snapshot to share ,I think we should wait for "Edric" for more data. Thanks for information regarding CYCLE ;-) |
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5/27/2014 9:00 PM | |
Joined: 11/21/2007 Last visit: 8/12/2024 Posts: 2325 Rating:
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In fact it is even easier to analyse if you can post a snapshot of your instance DB with Online values. Hello Edric One more question, you have specified the cycle time as 100ms. For this you must call your FC69every 100ms ( e.g. in a 100ms time interrupt OB ) Hope this helps Cheers Navnag |
There is no such thing as the last bug in a program |
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