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Wincc Flexible 2008 Example Trend Screen for pumping application

Created by: resolve at: 6/9/2010 11:09 AM (7 Replies)

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6/9/2010 11:09 AM	Rate (0)
resolve Posts: 3 Rating: (0)	Dear All, I need some tips how to create/show pumping station Trend screen example: 1. Level of the tank (Axis range 0-100) 2. Flow of the Pump (Axis range 0-200) 3. Duty/Standby Pump Running my Question is how can i show the pump runnig (boolean) on the trend screen. I need to show logged value on the trends, which pump was running and what was the flow and level at the time. reply me if some one has idea/ screen shots
resolve Posts: 3 Rating: (0)
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6/9/2010 12:55 PM	Rate (0)
IBN-Service Posts: 8946 Rating: (1000)	javedjax1980 ... my Question is how can i show the pump runnig (boolean) on the trend screen. ... You can use a (binary) variable, i.e: 0 = pump off, 1 = pump ON. Than you have a curve with ON/OFF status in your trend.
IBN-Service Posts: 8946 Rating: (1000)
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6/9/2010 3:20 PM	Rate (0)
resolve Posts: 3 Rating: (0)	Please correct me if i am wrong. I used this way for Boolean Variable, Trend Type: Log In the Source setting: Log: Trend Name... Log Entry: Tag name (Boolean) Gives me Error message "This Value is invalid" How can i use a binary tag with the Trends.......???????
resolve Posts: 3 Rating: (0)
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6/9/2010 3:42 PM	Rate (0)
Sandman Platinum Member Joined: 4/29/2010 Last visit: 1/20/2025 Posts: 1557 Rating: (161)	Hello, binarys tags aren`t supportet by a trend view. best regards.
	Last edited by: Sandman at: 6/9/2010 3:42 PM
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6/9/2010 5:56 PM	Rate (0)
Scott Posts: 81 Rating: (9)	I guess after being told you can't do that. A couple of solutions are: 1) To tie a script on change value to force a value into an internal (int or real) tag based on state of pump. i.e. pump state off = 0 pump state on = 100. This will put it in the same range as your other variables. 2) Or actually do this in your controller and read that tag into WinCC Flex. Then tie either of those tags to the trend view. Good luck
Scott Posts: 81 Rating: (9)
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6/9/2010 6:18 PM	Rate (2)
IBN-Service Posts: 8946 Rating: (1000)	Sandman Hello, binarys tags aren`t supportet by a trend view. best regards. OK, for this guys with less HMI - experience: use an integer curve-tag and transfer, depending form the conditions, different values, like Scott allready has said. Example: STOP -> 0 RUN -> 100 FAULT -> 50 ... ... ... Usevalues that will work with your scaling...
IBN-Service Posts: 8946 Rating: (1000)	Last edited by: IBN-Service at: 6/9/2010 6:22 PM
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6/12/2010 8:11 AM	Rate (0)
ALGUDKAR RAO Posts: 621 Rating: (10)	Hi create the tag integer type and under proerties select the limitiaon between 0-100 and devlop the plc logic program reached the limitaion value.make one momentry out put. when that output is high the same bit is change the color of trends. you can try it may be it is possible for your concept Best regards algudkar
ALGUDKAR RAO Posts: 621 Rating: (10)
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6/13/2010 12:40 PM	Rate (0)
resolve Posts: 3 Rating: (0)	Hai, my idea is, I need to use Bar type trends. Changing the color of the trend is not possible, we can change the color of the trend axis. for example see my attacment which i did it in paint. i need to know is this possible in wincc flexible trend control. one more question, how can i use more than one left axis in trends Thanks in advance...... Attachment untitled.JPG (422 Downloads)
resolve Posts: 3 Rating: (0)
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