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TrendView - DataLog problem

1/30/2013 7:45 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 3/27/2025 Posts: 164 Rating: (5)	Ok, So I have programmed a FB that will give me a Value I want to log every day at 23:58. The schedule task manager will Log the tag with LogTag (to historical data log) at 23:59, and the data is reset in the PLC at 00:00. My problem now is how the trendview displays my log when the cabinet has been powered off. Say I log three days: Day1: 1Hrs Day2: 2Hrs Day3: 3Hrs The log will display this correctly, but if the log is powered of for say three days the Day3 value will be shown in the trendview on all these days: for example: Day1: 1Hrs Day2: 2Hrs Day3: 3Hrs Day4: POWER OFF Day5: POWER OFF Day6: POWER OFF Day7: POWER ON Now the values displayed in the trend will look like this: Day1: 1Hrs Day2: 2Hrs Day3: 3Hrs Day4: 3Hrs Day5: 3Hrs Day6:3Hrs Day7: 3Hrs I want the days that where powered off to have a 0hrs value. I can't come up with a solution. SECOND PROBLEM: I write the log to CSV file to view in excel. It works fine but there isn't any Date and Time stamps on the values I record. Is this possible to achieve? Many thanks for the help! /Tim

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1/31/2013 3:31 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 3/27/2025 Posts: 164 Rating: (5)	So my second problems is solved but the first one is still there :/

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2/4/2013 5:01 PM	Rate (0)
Tweety Posts: 3037 Rating: (192)	Hello, You canlog your datas inyour own text file. See the example for WinCC flexible. How on a PC with WinCC flexible can you use a script to save and read out information in a text file? Tweety
Tweety Posts: 3037 Rating: (192)
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2/4/2013 8:37 PM	Rate (0)
rQx Bronze Member Joined: 12/9/2010 Last visit: 3/27/2025 Posts: 164 Rating: (5)	I've made the LOG in TIA portal using Historical data and the function LogTag. The problem is that the TrendView displays the trend in a wierd way. Days who haven't got a value will display the last known value. So if I day 1 have 5hrs logged value. Day2-7 have no value logged what so ever, and day 8 will have 2hrs logged value. The file will look something like this: 11/12 2013 - 23:58 5hrs 18/12 2013 - 23:58 2hrs This is perfect and will work for my project. HOWEVER. When displayed in trend view the curve will look like this: ______________________________ \| \| \| \|__ __\| \|___ day1 day2 day3 day4 day5 day6 day7 day8 I want it to look like this: ___ \| \| \| \| ___ __\| \|___________________________\| \|___ day1 day2 day3 day4 day5 day6 day7 day8 Sorry for the wierd post, but hopefully you get the picture :P

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