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WinCC prof active alarms

Created by: Oscar_83PL at: 3/25/2014 10:07 AM (6 Replies)

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3/25/2014 10:07 AM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 12/14/2022 Posts: 355 Rating: (5)	Hi, I am new with tia12and there is something I cannot handle. I use wincc tia12. Alarms are configured in "HMI alarms" tab. To display I use "Alarm_window". PLC active alarmsare notdisplayed. I see that alarms appear on rising edge of plc tag but if there is no edge the alarms are not displayed. Is it normal? The problem is when the scada is switched on after plc. Then there is no edge and there is no any alarm on screen. Is the problem something to do with WinCC RT? Do I have to install WinCC RT to engeenring version?

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3/27/2014 3:42 PM	Rate (0)
K!ke Posts: 1299 Rating: (133)	Hello, which Runtime do you use? I never noticed such behaviour with WinCC Runtime Professional. There are always all pending alarms displayed even if they occured before runtime start K!ke
K!ke Posts: 1299 Rating: (133)
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4/3/2014 8:50 AM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 12/14/2022 Posts: 355 Rating: (5)	I use TIA12WinCC PROF. The alarms in RTbecome active on rising/falling edge of alarmbit.That is something new to me andI connot understand why it is made in this way. If You start the RT the pending alarms are not visible.

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4/3/2014 12:53 PM	Rate (0)
K!ke Posts: 1299 Rating: (133)	Hello, do you have sp1 installed? K!ke
K!ke Posts: 1299 Rating: (133)
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4/3/2014 1:31 PM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 12/14/2022 Posts: 355 Rating: (5)	Fully updated and upgraded.

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4/4/2014 4:03 PM	Rate (0)
m_turk Posts: 25 Rating: (0)	Try puting the start value of the tag to 0 if the alarm is on rising edge, or on 1 if it's on falling edge.. It should work..
m_turk Posts: 25 Rating: (0)
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5/14/2014 3:04 PM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 12/14/2022 Posts: 355 Rating: (5)	But what if I start SCADA after PLC. The plc already haveset alarm bit and there is no edge for wincc. Strange for me it is.

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