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TrendView - help with configurating

Created by: rQx at: 1/16/2013 7:43 PM (4 Replies)

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1/16/2013 7:43 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 9/18/2024 Posts: 162 Rating: (4)	Hi! I have a motor that runs x hrs every day. I want to display this on a trendView. I want to have ONE point every day with the time. The trend will be running over several years. I believe this can be achieved but I don't really know how. I think I have to use "historical data", but I can't find out how to configure this. if it's possible I want to have the LOG accessible to download to USB. I think that the option with "historical data" will provide this also, correct? The problem is that I want ONE point every day with my value, that's my main issue. Thanks

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1/17/2013 3:50 PM	Rate (0)
Tweety Posts: 3037 Rating: (192)	Hello, Which panel do you use? Tweety
Tweety Posts: 3037 Rating: (192)
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1/17/2013 6:44 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 9/18/2024 Posts: 162 Rating: (4)	Hello! Opps, forgot the elementary facts. HMI: TP700 PLC: S7-1200 /Tim

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1/18/2013 9:30 AM	Rate (0)
Tweety Posts: 3037 Rating: (192)	Hello, You can log about your tag aboutthe function "logtag". You find more about this function in the help. You can log with this function your tag once on the day. Then you display this log in a trend. You must use in the trend view the Trend type "Data log". WinCC WinCC Comfort/Advanced V11.0 SP2 Tweety
Tweety Posts: 3037 Rating: (192)
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1/18/2013 3:56 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 9/18/2024 Posts: 162 Rating: (4)	I've tried to find out how to do it but the problem isn't only how to write the tag to a log. It is how I will make it do it one time a day only. To start with the cycles only go to 18h max. Then I thought I could make it with the schedule task but also here is 18h max. Then I was thinking of make the PLC tell the HMI when to log "with logtag" but then came the other problem. Say I leave a timer running when the motor runs every day, then I must reset the timer at each day change but before this I must write it to the log. However if the control cabinet is powered OFF at this time, how will I make sure that the timer is correct? I suppose that I can reset the timer at the CPU start up , but if the CPU is just turned OFF and ON a brief period of time, I don't want the timer to reset. Ok, so with the Schedule task you can use the "Daily" schedule but same problem here, if the HMI is powered off during the scheduled time, how do I manage the reset function of my PLC timer?
	Last edited by: rQx at: 1/18/2013 4:00 PM
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