Panasonic FP-E Programming Manual page 1060

Precautions Concerning Programs
4.2 Use of Duplicated Output
4.2.1 Duplicated Output
Duplicated output refers to repeatedly specifying the same output in a program.
If the same output is specified for the "OT" and "KP" instructions, it is considered to
be duplicated output.
Even if the same output is used for multiple application instructions, such as the SET
or RST instruction, or high−level instruction for data transfer, it is not regarded as
duplicated output.
If you enter RUN mode while the duplicated output condition exists, under normal
conditions, it will be flagged as an error. The ERROR (ERROR/ALARM) LED will light
and the self-diagnostic error flag R9000 will go on.
How to check for duplicated use
You can check for duplicated outputs in the program using the programming tool, by the
following method:
Using FP Programmer II:
Operate the TOTAL CHECK function.
(Key operation: (−) )
READ
9 ENT
OP
If there are any duplicated outputs, an error message (DUP USE) and the address will
be displayed.
Using programming tool software (NPST-GR):
Excute the "TOTALLY CHECK A PROGRAM" on "CHECK A PROGRAM."
If there are any duplicated outputs, an error message (DUPLICATED OUTPUT
ERROR) and the address will be displayed. If you execute "SEARCH AN ERROR," the
error message will be displayed, and the first address number will be displayed.
Enabling Duplicated Output
If you need to use output repeatedly due to the content of the program, duplicated
output can be enabled.
In this case, change the setting of system register 20 to "enable" (when using FP
programmer II, set K1).
When this is done, an error will not occur when the program is executed.
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