User guide

POINT I/O 5V DC and 24V DC Very High Speed Counter Module 17
Publication 1734-IN003F-EN-E - January 2014
The module uses several words to communicate real-time input and output data as well as
non-real-time module information (for example, description, and revision) and
Filter Selection
07 06 05 04 03 02 01 00 0
0 ZFBFAFFS
0000No filter
000150 kHz (10 μs + 0 μs/-1.6 μs)
00105 kHz (100 μs + 0 μs/-13.2 μs)
0100500 Hz (1.0 ms + 0 ms/-125 μs)
100050 Hz (10 ms + 0 ms/-1.25 ms)
0 A input not filtered
1 A input filtered
0 B input not filtered
1 B input filtered
0 Z input not filtered
1 Z input filtered
Assumes a 50% duty cycle signal.
Scalar Selection
07 06 05 04 03 02 01 00 Scalar
(1)
00000001Z – F
min
= 0.149 Hz
00000 010Z/2 – F
min
= 0.298 Hz
00000100Z/4 – F
min
= 0.596 Hz
00001000Z/8 – F
min
= 1.192 Hz
00010000Z/16 – F
min
= 2.384 Hz
0010 0000Z/32 – F
min
= 4.768 Hz
01000000Z/64 – F
min
= 9.537 Hz
10000000Z/128 – F
min
= 19.073 Hz
1 B input filtered
0 Z input not filtered
1 Z input filtered
(1)
Where F
min
indicates the frequency at which the zero frequency detect is asserted due to counter overflow.