Select a register to be tracked, then select other unassigned registers as the destination for the results. Select when or how often the tracking should be reset.

You may automate the assignment of result registers. The default starting registers are the first registers not allocated to I/O points. You may change these if you like. Then click Auto Allocate to fill in all result registers for all tracked registers.

The trend data is updated periodically at the period given. This period is subdivided into the number of slices given. A sliding window average of this number of slices is maintained, and this filtered value is processed as the trend data. Thus the minimum data value will be the lowest average of N slices over any given Period of time, and the maximum data value will be the highest average of N slices over any given Period of time.

The "When logged" selection for reset means when logged to any file. Therefore, trending should only be logged to a single file if "When logged" is selected for reset. All result registers for a given tracked register are reset upon logging of any one of the result registers if "When logged" is selected for reset. However, all of the resets will wait until the entire log record has been compiled for the given log cycle so that no partial results are logged.