User manual

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DPMS XPQ User Manual
not be changed. “Trending record backup pointer” is used by the controller,
it stores the serial number that the controller will read, it can not be changed
by the meter either. It is used to compare “trending record pointer” with input
data from the controller, when the two are equal, bit4 of “system status” will be
cleared ensuring all data has been read by the controller.
Bit4 of “system status” will be set to 1 when there is a new record.
Trending records will not be lost during power off. “Trending record pointer”,
“trending record backup pointer” and Bit4 of “system status” will be set to 0 after
power on.
Here is an example:
Fig 4.19 Trending Log