Rockwell Automation 2080 Micro800 Digital and Analog Plug-in Modules - Manual (Page 34)

26 Rockwell Automation Publication 2080-UM004B-EN-E - December 2013
Appendix 4 High Speed Counter – 2080-MOT-HSC
Number of Counters: 1 to 2
The module may be configured, using HSC_Mode, to use the inputs as 1 or 2
counters.
1 counter: A, B, Z = Counter 0
2 counters: A, Z = Counter0; B = Counter 1
Counter Pin Usage
125 Hz (DC 4 ms) 195 Hz (DC 2.6 ms) 131 Hz (DC 3.79 ms)
62.5 Hz (DC 8 ms) 97.3 Hz (DC 5.2 ms) 65.9 Hz (DC 7.6 ms)
31.25 Hz (DC 16 ms) 38.8 Hz (DC 10.3 ms) 32.9 Hz (DC 15.2 ms)
IMPORTANT For low frequency pulses, filter times should be set appropriately to
avoid extra pulses from a noisy environment. For high frequency
pulses, shielded cable must always be used.
Nominal Filter Settings Maximum Guaranteed
Block Pulse Width Minimum Guaranteed Pass
Pulse Width
A
B
Z
Counter
HSC_Mode = 2 to 11
A
Z
Counter
HSC_Mode = 0, 1, 12, and 13
Counter B
Input Operational Modes
Mode Description
0 Up Counter – The accumulator is immediately cleared (0) when it reaches the high
preset. A low preset cannot be defined in this mode.
1 Up Counter with external reset and hold – The accumulator is immediately cleared (0)
when it reaches the high preset. A low preset cannot be defined in this mode.
2 Counter with external direction.
3 Counter with external direction, reset, and hold.
4 Two input counter (up and down).
5 Two input counter (up and down) with external reset and hold.
6 Quadrature counter (phased inputs A and B).
7 Quadrature counter (phased inputs A and B) with external reset and hold.
8 Quadrature X4 counter (phased inputs A and B).
9 Quadrature X4 counter (phased inputs A and B) with external reset and hold.
10 Quadrature X2 counter (phased inputs A and B).