B&B Electronics OP10 - Manual - Manual (Page 31)

2.5.13 Trend Line
Some parameters in industrial control applications vary at a slow rate. Often, the operators
want to know the variations of these parameters in a certain of time. Trend line should be the best
choice.
Press to show a dotted box that moves with the cursor. Move the cursor to the proper
position and click the left button to locate the trend line there.
„ Register
The address of the register corresponding to the trend line
„ Full Value
The register value when the trend line reaches the 100% of the scale
„ Zero Value
The register value when the trend line reaches the 0% of the scale
„ Data Collection (number of dots)
The total of the sample points in the whole trend line. The more sample dots does the
trend line has, the more detail it can provide. Certainly more sample dots make the time
period longer. The largest number of the dots is the width of the trend Line minus 2.
„ Timing Interval
The interval between two sample points . Max: 65535 seconds, Min: 1 second
„ Size
The length and width of the trend line. Max: 192*64 point, Min: 16*16point
Note:
1. A trend line component can display only one line.
2. There is no limit to the amount of the trend lines on the screen. But the amount of data
collection can’t be more than 384 on one screen.
3. The newest data is appeared on the right side of the trend line. When a new data comes,
other former data move to the next left grid.
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