Rockwell-automation 1746-HSCE2 Multi-Channel High Speed Counter Module Manual de usuario descargar pdf (Pagina 110)

Publication 1746-UM002B-EN-P - August 2004

6-18 Application Examples

Data Table for N10 File (hexidecimal)

Data Table for N11 File (decimal)

Example 5 - Change Presets

Dynamically

This example shows the user how to dynamically change the preset

value using the Min/max Count Block.

1. The following procedure uses the Example 2 program (SLC 5/03

or higher processor in Class 4, mode 1).

2. The Min/max Count Value requires the use of handshaking bits

to get the preset values into the 1746-HSCE2. Therefore, the

handshaking code is in a separate subroutine (ladder file 14).

The ladder rungs which trigger the dynamic preset change are in

the 1746-HSCE2 routine (ladder file 8).

3. Before and after the Min/max Count Block with the new preset

value is transferred to the 1746-HSCE2, the Counter Control

Block (with the transmit bit reset), is in the 1746-HSCE2’s output

image. Leaving the Counter Control Block in the module’s

output image allows for easy disabling of the counters and

implementing of soft presets.

Programming Blocks Offset 0123456789

Module Setup N10:0 1 101 80000000

Counter Configuration N10:10 302 1C 0 C 000000

Min/Max Count Value Counter 1 N10:20 400230082000

Min/Max Count Value Counter 2 N10:30 104 0 0 7 C8 00000

Min/Max Rate Value N10:408FF9C064000000

Program Ranges N10:50 410 10043E71000

Program Ranges N10:60 410 25093E72000

Program Ranges N10:70 410 4 A 0 E 3E7 1000

Program Ranges N10:80 410 8 F 0 13 3E7 2000

Program Ranges N10:90 410 10 14 0 18 3E7 1000

Program Ranges N10:100 410 20 19 0 1D 3E7 2000

Program Ranges N10:110 410 40 1E 0 22 3E7 1000

Program Ranges N10:120 410 80 23 0 27 3E7 2000

Program Ranges N10:130 110 100 0 0 1 31F 4000

Program Ranges N10:140 110 200 1 320 3 257 8000

Program Ranges N10:150 110 400 3 258 5 18F 4000

Program Ranges N10:160 110 800 5 190 7 C7 8000

Counter Control N10:170 80 8001 8001 0 0 FF00 FFF 0 0 0

Offset 0123456789

N11:0 170 170 17

1 2 ... 105 106 107 108 109 110 111 112 113 114 115 ... 139 140

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Rockwell-automation 1746-HSCE2 Multi-Channel High Speed Counter Module Manual de usuario Pagina 110