Rockwell Automation 9323-PA1E USER MANUAL APS 6.0 - Manual (Page 292)

Changing Processor Modes
15–11
To test a single rung at a time, do the following:
1. Press
CONFIG OFFLINE
CONFIG
SINGLE
STEP
F2
, then
CONFIG OFFLINE
CONFIG
EXECUTE
STEP
F8
. The processor executes an initialization
scan. The blinking power rail indicates the next rung to be scanned (Rung 2:0).
2. Press
CONFIG OFFLINE
CONFIG
EXECUTE
STEP
F8
again. The processor then executes file 2, rung 0. The power
rails on the next rung to be scanned now blink (Rung 2:1).
3. Repeat step 2 to proceed through your program one rung at a time.
To test a group of rungs, do the following:
1. Press
CONFIG OFFLINE
CONFIG
SINGLE
STEP
F2
, then
CONFIG OFFLINE
CONFIG
SET
END RNG
F1
. Enter the ending file and rung number the
processor is to scan. For example: 2:10 (file 2, rung 10).
2. Press [ENTER] . The processor executes an initialization scan and then
executes from the blinking rung to the specified ending rung. The power rails
on the specified end rung now blink indicating that it is the next rung to be
scanned.
3. Press [ENTER] and scan from the blinking rung through the end of the
program and back to the blinking rung, or enter a new ending file and rung
number and press
[ENTER] . The processor scans from the existing rung with
blinking power rails to the newly specified end rung.
4. Repeat step 3 to continue scanning groups of rungs.
To resume processor execution from rung 0 (or start over), exit the Single Step
Test mode and enter the Program mode or any other mode. Then re-enter the
Single Step Test mode.