183
FINS Commands Section 5-3
Comments Parameters will be written regardless of the operating mode of the CPU Unit.
There are some settings in the PLC Setup that cannot and will not be written if
the CPU Unit is in RUN mode, but the end code will be 0000 nevertheless. It is
the user’s responsibility to program steps to prohibit this command from being
executed when the CPU Unit is in the RUN mode if such protection is neces-
sary. Execute CPU UNIT STATUS READ (command code 0601) to read the
CPU Unit’s mode. (Refer to 5-3-17 CPU UNIT STATUS READ: 06 01.)
Data can only be written to the I/O registration table when the CPU Unit is in
PROGRAM mode.
All words in the specified parameter area must be written at the same time to
ensure complete data. A maximum of 498 words can be written with each
command. Nothing will be written if more than 498 words are specified. To
write larger parameter areas, use multiple commands and specify the begin-
ning word for each.
Except for the routing table area, each area must be read or written in its
entirety.
5-3-9 PARAMETER AREA CLEAR: 02 03
Writes all zeros to the specified number of consecutive parameter area words
to clear the previous data. The I/O table can be cleared only when the CPU
Unit is in PROGRAM mode.
Note Some PLC Setup parameters cannot be written in RUN or MONITOR mode.
Execution Conditions
Command Format
Response Format
Parameters Parameter area code (command)
Specify the parameter area to clear.
Beginning word (command)
Always 0000.
Number of words (command)
Specify the number of words to clear. (One word = 16 bits.) If the number of
write words is set to 0000, no words will be written and a normal end code will
be returned.
Access right at
other device
UM read
protection
DIP switch UM
write protection
Network write
protection
No OK No No
RUN mode MONITOR mode PROGRAM mode
OK OK OK
02 03
Parameter
area code
Beginning
word
No. of
words
00 00 00
00
DataCommand
code
End codeCommand
code
02 03
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