This video major introduce historical data display and query.
Historical data display and query
Hello, welcome to the touch screen operation video tutorial, we talk about the history data display and query. The historical data display function is a function of data collection when the results of data collection in the form of a table, in accordance with the set sampling frequency constantly refreshed display, it can not only display the original value, string, but also the original data processing, the first can be displayed into binary or hexadecimal, the second can be logical operations, including setting the gain, offset, the third statistics can be queried The second function is a query function, the third export, the fourth can clear the history data, the following practical operation to demonstrate. The following talk about the historical data display components, click the menu bar, components - list - historical data display, open the historical data display property page, the data source is listed in advance in the data sampling, pause need to check a button, address selected LB11, this side of the display is a list of the contents, including line number, serial number, date, etc. The first one is the current channel statistics, which can count the minimum value LW11, the maximum value LW12, the average value LW13, LW1 we use to enable the numerical operation, the gain is 5, there is also a data display type it and the numerical operation is two choose one, it can display binary or 102 day, query by time period is also the same, lw100 ~ 105 in order to indicate the start of the query year, month, day, hour, minute and second, lw106 ~ 111 in order to indicate the end of the year, month, day, hour, minute and second, in order to query, lw100 is 0 for the day, 1 for yesterday, 2 for the day before yesterday, and so on, query by keyword, query channel here need to set the address, for example, choose 0 ~ 0, lw. b0.0 for on, that means query the first channel, for off means no query, and so on, the query register should also be set, the last one is the register control query, address set to 120, lw120 for 0 means query by date, 1 means query by time range, 2 means query by order, 3 means query by keyword, here by date query for example, tick export csv LW1, LW2, you can see in the channel, next look at the query, fill in the query date, click query, you can see the results, this side of the minimum, maximum and average value of the query, click query, the page is no longer scrolling display, and then click query, the page began to refresh, click export, followed by the export progress, 100% means that the export has been completed, there is a clear historical data, click Component - switch - function key, function key property page function setting select system operation, function operation select clear all historical data, label fill in clear (clear), click OK, again offline simulation, click clear, you can see the page data is cleared. This is the end of the history data display and query explanation, thank you for watching.
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