130 Rockwell Automation Publication 2080-UM002L-EN-E - November 2021
Chapter 8 Use the High-Speed Counter and Programmable Limit Switch
HSC Mode 7 – Quadrature Counter – Phased Inputs A and B with External Reset and Hold
HSC Mode 8 – Quadrature X4 Counter
Example 2
(2)
ß off (0) on (1) HSC Accumulator - 1 count
Example3 off (0) Hold accumulator value
Example 4 on (1) Hold accumulator value
Example 5 on (1) Hold accumulator value
Example 6 off (0) Hold accumulator value
(1) Count input A leads count input B.
(2) Count input B leads count input A.
Blank cells = don’t care,
= rising edge, = falling edge
Table 29 - HSC Mode 6 Examples (Continued)
Input Terminals Embedded Input 0 Embedded Input 1 Embedded Input 2 Embedded Input 3 CE Bit Comments
Inputs 0…11 are available for use as inputs to other functions regardless of the HSC being used.
Table 30 - HSC Mode 7 Examples
Input Terminals Embedded Input 0 Embedded Input 1 Embedded Input 2 Embedded Input 3 CE Bit Comments
Function Count A Count B Z reset Hold
Example 1
(1)
off (0) off (0) on (1) HSC Accumulator + 1 count
Example 2
(2)
ß off (0) off (0) off (0) on (1) HSC Accumulator - 1 count
Example3 ß off (0) off (0) on (1) Reset accumulator to zero
Example 4 on (1) Hold accumulator value
Example 5 on (1) Hold accumulator value
Example 6 off (0) on (1) Hold accumulator value
Example 7 off (0) off (0) Hold accumulator value
(1) Count input A leads count input B.
(2) Count input B leads count input A. Blank cells = don’t care,
= rising edge, = falling edge
Inputs 0…11 are available for use as inputs to other functions regardless of the HSC being used.
Table 31 - HSC Mode 8 Examples
Embedded Input 1(HSC0) (A) Embedded Input 1(HSC0) (B) Value of CE Bit Accumulator and Counter Action
OFF TRUE Count Up Acc. Value
ON TRUE Count Down Acc. Value
OFF TRUE Count Down Acc. Value
ON TRUE Count Up Acc. Value
OFF TRUE Count Down Acc. Value
ON TRUE Count Up Acc. Value
OFF TRUE Count Up Acc. Value
ON TRUE Count Down Acc. Value
OFF or ON OFF or ON X Hold Acc. Value
X X FALSE Hold Acc. Value
To Next Page
Loading...
Need help?
General
