Mitsubishi MELSEC Q Series Reference Manual page 170

Code
When SFC designated
ASCII code
When SFC not designated
When SFC designated
Binary mode
When SFC not designated
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3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
c) When file and step number are not designated (02
used) in the monitor conditions, the filename and extension are
replaced by a string of spaces or 20
condition designated is selected by a subcommand.
The attribute becomes a space or 20
d) When a monitor condition was selected not to be designated by a
subcommand, it is not required to specify the file name, file
extension and attributes.
e) The attributes can be checked using the file search function
described in Sections 3.8.5 and 3.8.16.
7) SFC pattern
This is one of the data that determine when to read data during the
execution of the designated sequence step number of the MELSAP3
program (hereinafter abbreviated as SFC).
a) When a subcommand selected that monitor conditions should be
designated, and the monitor condition of 3) designated are file
and step number, the SFC pattern is designated by the data
shown below.
Other patterns cannot be designated.
Write data
"0003"
"0000"
0003
0000
b) When file and step number was selected not to be designated as
monitor conditions, the SFC pattern becomes "0000"/"0000
even if the subcommand selected that monitor conditions should
be designated.
c) When the SFC pattern has the value "0003" /0003
device memory data is read during the END processing of the
programmable controller CPU when the sequence step number
designated by 9) and the block number designated by 8) are
executed.
d) When a monitor condition was selected not to be designated by a
subcommand, it is not required to specify the SFC pattern.
POINT
(1) For a detailed description of MELSAP3 that supports the Q/LCPU, refer to the
Programming Manual and Operating Manual for MELSAP3
(2) The SFC step number designated in 8) and the sequence step number
designated in 9) correspond to the following displayed parts when the
MELSAP3 program is edited.
4 characters are sequentially transmitted beginning from the first character ("0").
H
Transmits the 2-byte value shown, beginning from the low byte (L: bits 0 to 7).
H
Step No. Sequence step No.
and 04
H
codes even if the monitor
H
code.
H
Remarks
, the designated
H
are
H
"
H
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