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Negative & positive trigger alarm

Created by: samkcr at: 6/27/2009 3:59 PM (10 Replies)

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6/27/2009 3:59 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi... I have to generate alarm for both high & low status of a single bit. Is it possible? Example consider M0.0 - HIGH- ALARM ON M0.0 - LOW- ALARM OFF
	All is well :-)
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6/27/2009 4:27 PM	Rate (0)
Nil96 Posts: 325 Rating: (14)	Hi, U can append a new line in the alarm. Then u can specify the message tag & text for this alarm. Insert one more alarm field. In this case specify the same message tag as u created for the first one and make sure that u enable "is created on a negative edge". With this u make sure that a same tag is used for alalrm for both high & low values(ie. 1 & 0). Hope this helps Regards Nil
Nil96 Posts: 325 Rating: (14)	Last edited by: Nil96 at: 6/27/2009 4:28 PM
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6/27/2009 7:10 PM	Rate (0)
Eastern Posts: 557 Rating: (64)	hi you can try this.... A M0.0 = M10.0 HIGH- ALARM ON AN M0.0 = M10.0 LOW- ALARM OFF Regards
Eastern Posts: 557 Rating: (64)
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6/27/2009 8:43 PM	Rate (0)
ddg Posts: 261 Rating: (42)	Nil96 Hi, U can append a new line in the alarm. Then u can specify the message tag & text for this alarm. Insert one more alarm field. In this case specify the same message tag as u created for the first one and make sure that u enable "is created on a negative edge". With this u make sure that a same tag is used for alalrm for both high & low values(ie. 1 & 0). Hope this helps Regards Nil I thinkin between two the first alarm line will be in action. Eastern hi you can try this.... A M0.0 = M10.0 HIGH- ALARM ON AN M0.0 = M10.0 LOW- ALARM OFF Regards if I am not wrong Eastern want to say. ********** A M0.0 = M10.0 HIGH- ALARM ON AN M0.0 = M10.1 LOW- ALARM OFF ******************* Regards ddg
ddg Posts: 261 Rating: (42)	Last edited by: ddg at: 6/27/2009 8:55 PM Last edited by: ddg at: 6/27/2009 8:47 PM
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7/1/2009 2:11 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi... I tried with this logics butit is not working properly.... In runtime msgarchive list both alarms are displaying.... I think it is not possible.... But in the msg list it is working Sequencially... What may be the problem ?
	All is well :-)
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7/1/2009 2:49 PM	Rate (0)
Saravana kumar Gold Member Joined: 2/6/2009 Last visit: 9/1/2025 Posts: 940 Rating: (119)	Hi, You can use two Memory Bits for the generation of alarm by using the attached logic. As per the attached logic M 10.0 will be the Positive Edge alarm for M0.0 and M 10.1 will be the Negative Edge alarm for the M0.0. Link the "M 10.0 as M0.0 - HIGH- ALARM ON"and "M 10.1 as M0.0 - LOW- ALARM OFF"in the WinCC alarm logging. I hope this helps you. Attachment Alarm.pdf (219 Downloads)
	_______________________________________________________________ Best Regards T.Saravana Kumar "All for the Best"
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7/2/2009 9:15 AM	Rate (0)
CBo Gold Member Joined: 4/5/2006 Last visit: 7/30/2025 Posts: 917 Rating: (63)	Hi samkcr, i'm a lil confused samkcr ...I have to generate alarm for both high & low status of a single bit... if you have ALARM status, you should have a GOOD status also...where is the good state in your example? In histirochal alarm you already have the "GONE" status recorded with different timestamp from "INCOMING" status. When you create 2 different alarm message on the same source, it's normal receive 2 contemporaneous events... Lets me know if I misenderstood sometthing Regards

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7/2/2009 11:52 AM	Rate (0)
rit03 Silver Member Joined: 6/13/2006 Last visit: 2/11/2023 Posts: 341 Rating: (24)	Hi You can creat special message class say "Message2" for your requirement and in Column Status text if M0.0 is high write "High" for Came In and "Low" for Went Out See Attachement for clarity. Now in Alarm Control , Go to General Tab select "Long Term Archive List " to view Came In(High) and Went Out(Low) in Alrm Window. Also don't forget to select "Message2" in alarm log editor for this particular alarm textwhen M0.0 goes high. regards, rit03 Attachment Alram.JPG (259 Downloads)
	Last edited by: rit03 at: 7/2/2009 3:21 PM
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7/4/2009 4:16 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi... I tried with same logic u mentioned +ve & -ve trigger for M0.0.But the result is same. In online montoring through msg list it changing... But in longterm archive list i get three msgs high -- alarm on alarmoff alarm on low -- alarm off alarm on alarm off like this.... But i didn't try came in & went out i will check it out and then revert back...
	All is well :-)
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8/1/2009 4:36 PM	Rate (0)
samkcr Bronze Member Joined: 3/24/2009 Last visit: 8/7/2023 Posts: 406 Rating: (3)	Hi... I tried with camein and wentout logic it is working fine...But the problem is when i deactivate project and then reactivate the project in this case what are all the alarms remain in high statein the time of deativationit is again created in alarm screen with the time stampingof activation time. How to overcome this?
	All is well :-)
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