Maintenance
and Troubleshooting
9–9
Maintenance and Troubleshooting
Output points can be set on or off in the DL05 series CPUs. If you want to do an I/O
check out independent of the application program, follow the procedure below:
Step Action
1
Use a handheld programmer or DirectSOFT
to communicate online to
the PLC.
2 Change to Program Mode.
3 Go to address 0.
4
Insert an “END” statement at address 0. (This will cause program
execution to occur only at address 0 and prevent the application pro-
gram from turning the I/O points on or off).
5 Change to Run Mode.
6
Use the programming device to set (turn) on or off the points you wish
to test.
7
When you finish testing I/O points delete the “END” statement at
address 0.
WARNING: Depending on your application, forcing I/O points may cause
unpredictable machine operation that can result in a risk of personal injury or
equipment damage. Make sure you have taken all appropriate safety precautions
prior to testing any I/O points.
BIT REF X
16P STATUS
From a clear display, use the following keystrokes
Y 10 Y 0
Use the PREV or NEXT keys to select the Y data type
Y2X0
END
X2
X3X1
X4
X5 X7
END
Insert an END statement
at the beginning of the
program. This disables
the remainder of the
program.
STAT ENT
NEXT
0
A
ENT
Y 10 Y 0
Use arrow keys to select point, then use
ON and OFF to change the status
Y2 is now on
SHFT
ON
INS
Testing Output
Points
Handheld
Programmer
Keystrokes Used
to Test an Output
Point
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