Rockwell Automation 9323-PA1E USER MANUAL APS 6.0 - Manual (Page 303)

Preface
Advanced Programming Software User Manual
16–10
Example
1. Access the data monitor by pressing
CONFIG OFFLINE
CONFIG
DATA
MONITOR
F8
. Enter the address of a counter
file and press [ENTER] . In the following display, the accumulator value is 16
and the DN bit is set. Reset the counter by making rung 4 true momentarily.
The ACC value and DN bit are reset to zero.
Press a key or enter value
C5:0/CU =
REM CSN
no forces formatted decimal addr PROC ADDR 1
address CU CD DN OV UN UA PRE ACC
C5:0 0 0 1 0 0 0 3 16
2. While you are online, change the preset and accumulator values at the counter
data file display. Move the cursor to the preset, PRE, and enter 32,767
(maximum value). Move the cursor to the accumulator, ACC, and enter 32766.
The display appears as follows:
address CU CD DN OV UN UA PRE ACC
C5:0 0 0 0 0 0 0 32767 32766
3. Increment the counter by turning on I:O.0/0. The accumulator value equals the
preset value, the done bit DN is set, and rung 2 is true. Increment the counter
again. The counter is in an overflow condition, setting the overflow bit OV.
Rung 3 in the ladder program is now true.
address CU CD DN OV UN UA PRE ACC
C5:0 0 0 1 1 0 0 32767 -32768
The accumulator is on the 32,768th count, shown in the display as -32768. As
the count continues to increment, the accumulator shows negative numbers of
decreasing absolute value.