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System Setup, Auxiliary Area Allocations, and Built-in I/O Allocations Appendix C
Start Code and End Code
Number of Received Bytes
RS-232C Port Settings for PLC Link (PC Link (Slave))
Serial Communications Mode
Baud Rate
PLC Link Unit No. (PC Link Unit Number)
Address Settings Function Related flags and
words
When setting is
read
Word Bits
+164 00 to 07 00 to FF hex
Default: 00 hex
The frame format for
no-protocol commu-
nications data (mes-
sages) can be
specified.
Specifies the end
code. This setting is
valid when bits 08 to
09 of +165 are set to
01.
A410.15 (RS-232C Port
Settings Changing Flag)
At next cycle (Also
can be changed
with STUP (237).)
08 to 15 00 to FF hex
Default: 00 hex
Specifies the start
code. This setting is
valid when bit 12 of
+165 is set to 1.
+165 12 0: Don’t add start code
1: Add start code
Default: 0
Specifies whether
the frame format for
no-protocol commu-
nications is speci-
fied.
Specifies whether to
add a start code.
08 and
09
00: Don’t add end code
and use number of
received bytes setting
01: Add end code
11: Add CR+LF
Default: 00
Specifies whether to
add an end code.
Address Settings Function Related flags and
words
When setting is
read
Word Bits
+165 00 to 07 00 hex: 256 bytes
01 to FF hex: 1 to 255
Default: 00 hex
Specifies the data length to send and
receive for no-protocol communica-
tions. The start code and end code are
not included in the data length.
This setting is valid only when bits 08
and 09 of +165 are set to 00.
The default setting for each TXD(236)/
RXD(235) instruction is 256 bytes. This
setting can be set to 01 to FF to set 255
bytes or less.
A410.15 (RS-232C Port
Settings Changing Flag)
At next cycle (Also
can be changed
with STUP (237).)
Address Settings Function Related flags and
words
When setting is
read
Word Bits
+160 08 to 11 07 hex: Serial PLC Link
Slave (Polled Unit)
Default: 00 hex
This setting determines whether the
RS-232C port will operate in Serial PLC
Link Slave mode or another serial com-
munications mode. Set 07 for Serial
PLC Link Slave Mode.
A410.15 (RS-232C Port
Settings Changing Flag)
At next cycle (Also
can be changed
with STUP (237).)
Address Settings Function Related flags and
words
When setting is
read
Word Bits
+161 00 to 07 00 hex: Standard setting
Default: 00 hex
Only the standard setting of 38,400 can
be used for the Serial PLC Link Slave
Serial Communications Mode.
A410.15 (RS-232C Port
Settings Changing Flag)
At next cycle (Also
can be changed
with STUP (237).)
Address Settings Function Related flags and
words
When setting is
read
Word Bits
+167 00 to 03 0 to 7 hex
Default: 0 hex
Sets the unit number of the FQM1 as a
Serial PLC Link Slave.
A410.15 (RS-232C Port
Settings Changing Flag)
At next cycle (Also
can be changed
with STUP (237).)