Publication 1766-RM001A-EN-P - October 2008
Using the High-Speed Counter and Programmable Limit Switch 117
The main high-speed counters support 10 types of operation mode and
the sub high-speed counters support 5 types (mode 0, 2, 4, 6, 8). If the
main high-speed counter is set to mode 1, 3, 5, 7 or 9, then belong the
sub high-speed counter will be disabled.
HSC Operating Modes
Mode
Number
Type
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
HSC Function Operating Modes & Input Assignments
Modes of Operation Input 0 (HSC:0)
Input 4 (HSC:1)
Input 8 (HSC:2)
Input 2 (HSC:3)
Input 6 (HSC:4)
Input 10 (HSC:5)
Input 1 (HSC:0)
Input 5 (HSC:1)
Input 9 (HSC:2)
Input 3 (HSC:3)
Input 7 (HSC:4)
Input 11 (HSC:5)
Input 2 (HSC:0)
Input 6 (HSC:1)
Input 10 (HSC:2)
Input 3 (HSC:0)
Input 7 (HSC:1)
Input 11 (HSC:2)
Mode Value in
User Program
Counter with Internal
Direction
(mode 1a)
(1)
Count Not Used Not Used Not Used 0
Counter with Internal
Direction, External Reset
and Hold
(mode 1b)
(2)
Count Not Used Reset Hold 1
Counter with External
Direction (
mode 2a)
(1)
Count Direction Not Used Not Used 2
Counter with External
Direction, Reset and Hold
(mode 2b)
(2)
Count Direction Reset Hold 3
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