08
4 DESCRIPTION OF THE FUNCTIONS
4.1 Counter Interface
Fig. 2: Block diagram
The UFC 430 module features three equivalent counter channels (X1, X2, and X3) each with an interpolator,
a counter, two latch registers, one load register, one control and one status register.
Counter operating modes
Three counter operating modes are available:
Event counter with direction input and clear input
Counting of square-wave signals with times 1, times 2 or times 4 evaluation for encoders with TTL signals
Counting of square-wave signals with times 1, times 2 or times 4 evaluation and additional times 20,
25, 50 or times 100 interpolation can be programmed.
Used DLL function:
Name
Page
Function
UFC_SetInterpolMode
19
Switch between the three operating modes and simultaneously set
the interpolation factor
Table 5: DLL functions, counter operating modes
