Using the Extended Trend block, you can trend a value over a period of time. For example, suppose you want to trend an oven temperature for an hour using the configuration shown in the following figure.
You can accomplish this by creating an Analog Input block that receives its value from the oven temperature and an Extended Trend block to trend the data. Be sure to connect the two blocks by entering the name of the Extended Trend block into the Next field of the Analog Input block. This ensures the Extended Trend block receives data from the upstream Analog Input block.
Once you finish configuring the process database, create a chart to the T_DATA2 field of the Extended Trend block.
