Rockwell Automation 1746-HSCE2 Multi-Channel High Speed Counter Module User Manual

Page 116

Publication 1746-UM002B-EN-P - August 2004

6-24 Application Examples

Ladder File 8 - HSCE2

0000

S:1

MOV

Move
Source

0 <
Dest

B3:0

0000000011000001<

MOV

Move
Source

0 <
Dest

N11:0

170 <

MOV

Fill File
Source

Dest

Length

#O:1.0

FLL

Copy File
Source

#I:1.2

Dest

Length

#N10:25

COP

MUL

Multiply
Source A

10 <
Source B

N11:2

17 <
Dest

N11:1

170

MUL

0001

0002

0003

S:1

B3:0

JSR

Jump To Subroutine
SBR File Number

U:9

JSR

FIRST_PASS

B3:0

HSCE2_INIT_DONE

HSCE2_ERROR

DATA_BLOCK_OFFSET

MAX_BLOCK_ADDR

#HSCE2_CFG_BLK

END

Prior to use, the programmer sets N11:2 to the total number of data blocks which will be entered into file N10 (not including the Counter Control
Block) and initializes the data blocks in file N10. Ten integer data blocks are used (instead of eight) to simplify the display in data windows.

The first pass of the program initializes the following values:

1. The HSCE2 initialization done bit (B3/0) is unlatched.

2. The HSCE2 error bit (B3/1) is cleared.

3. The Counter Configuration Block is cleared. Note: The init HSCE2 routine (ladder file 9) is bypassed during the first pass to ensure the

While the HSCE2 is not initialized, and the HSCE2 has not errored, call the HSCE2
initialization routine.

This rung copies the count value to the preset value, demonstrating how to retain counts. The
rung assumes that the counter control block (last configuration block) is still in the output image
to the 1746-HSCE2.