Upward Counter; Downward Counter; Fig. 8-9: Run Down Of The Upward Counter; Fig. 8-10: Run Down Of The Downward Counter - Addi-Data APCI-3010 Technical Description

APCI-3xxx

Upward counter

After reaching the reload value, the counting value is set on 0 and continues
to be counted. At an overflow an interrupt can be generated.

Downward counter

Fig. 8-10: Run down of the downward counter

In order to get the same counting value as in the upwards mode, the reload
value must be set on 3. The counter counts down to 0 and will be reset to the
reload value from the next edge cycle on.

Fig. 8-9: Run down of the upward counter

Functions of the board
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