Omron CJ - 10-2005 Manual page 53

Checking Program Operation
The PLC will start executing the program in MONITOR mode.
MONITOR
PROGRAM
RUN
2. Access the initial display.
CLR
3. Switch to the cyclic task.
FUN
0
4. Monitor the I/O bit status step by step during program execution.
Press the Up and Down Keys to read the program and monitor I/O bit sta-
tus as shown below. This operation is called monitoring I/O bit status.
The status resulting from one complete cycle of execution is shown on the
display when monitoring I/O bit status, not the status during program exe-
cution.
When a normally closed bit is OFF, the I/O bit status will be displayed as
"1."
5. Monitor bit status as described next.
Check to see whether or not CIO 000100 turns ON and holds itself ON
when CIO 000000 is turned ON.
a) Monitor CIO 000000. (Simple I/O Monitor)
CLR
SHIFT
MONITOR
RUN PROGRAM
CS-series PCs
<MON>
CJ-series PCs
<MON>
3:JPN~ENG
000000 IT002
...
0:CYCLE TASK
CHG
1:INTRPT
000000 CT00
WRITE
000000 CT00
↓
LD
000001 CT00
↓
OR
000002 CT00
↓
AND N
000003 CT00
↓
OUT
000000 CT00
...
000000
CONT
BIT
#
Section 2-5
BZ
BZ
0
OFF
000000
0
OFF
000100
1
ON
000001
0
OFF
000100
000000
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