Advantech PC-LabCard PCI-1784 - Manual (Page 38)

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UL Counter underflow lock control
0 Counter continues counting (wraps over) when
counter underflow
1 Counter locked when counter underflow
DF Digital Filter
0 Quadrature input frequency without digital filter
1 Quadrature input frequency with digital filter
SW Software latch counter data
0 Disable software latch
1 Enable software latch
IX Index latch counter data
0 Disable index latch
1 Enable index latch
TM Timer latch counter data
0 Disable timer latch
1 Enable timer latch
DI0 DI0 latch counter data
0 Disable DI0 latch
1 Enable DI0 latch
DI1 DI1 latch counter data
0 Disable DI1 latch
1 Enable DI1 latch
DI2 DI2 latch counter data
0 Disable DI2 latch
1 Enable DI2 latch
DI3 DI3 latch counter data
0 Disable DI3 latch
1 Enable DI3 latch