301
PLC Setup Section 7-1
Baud Rate (bps)
No-protocol Settings
Standard/Custom Settings
Serial Communications Mode
Data Length
Stop Bits
Programming 
Console address
Settings Function Related 
flags and 
words
When set-
ting is read 
by CPU Unit
Word Bit(s)
+161 0 to 7 00: 9,600 bps
06: 9,600 bps
07: 19,200 bps
08: 38,400 bps
09: 57,600 bps
0A: 115,200 bps
Default: 00
Settings 00 and 06 through 0A are valid 
when the communications mode is set to 
peripheral bus.
A61902
(RS-232C 
Port Settings 
Changing 
Flag)
At the next 
cycle.
Programming 
Console address
Settings Function Related 
flags and 
words
When set-
ting is read 
by CPU Unit
Word Bit(s)
+160 15 0: Standard
1: Custom
Default: 0
The standard settings are as follows:
1 stop bit, 7-bit data, even parity, 2 stop bits, 
9,600 bps
A61902
(RS-232C 
Port Settings 
Changing 
Flag)
At the next 
cycle.
(Also can be 
changed with 
STUP (237).)
Programming 
Console address
Settings Function Related 
flags and 
words
When set-
ting is read 
by CPU Unit
Word Bit(s)
+160 08 to 11 03 Hex: No-protocol
Default: 00 Hex
This setting determines whether the RS-
232C port will operate in no-protocol mode 
or another serial communications mode.
A61902
(RS-232C 
Port Settings 
Changing 
Flag)
At the next 
cycle.
(Also can be 
changed with 
STUP (237).)
Programming 
Console address
Settings Function Related 
flags and 
words
When set-
ting is read 
by CPU Unit
Word Bit(s)
+160 3 0: 7-bit
1: 8-bit
Default: 0
This setting is valid only in no-protocol com-
munications mode. Set the Standard/Cus-
tom setting (word 160, bit 15) to 1 to enable 
this setting. 
A61902
(RS-232C 
Port Settings 
Changing 
Flag)
At the next 
cycle.
(Also can be 
changed with 
STUP (237).)
Programming 
Console address
Settings Function Related 
flags and 
words
When set-
ting is read 
by CPU Unit
Word Bit(s)
+160 2 0: 2 bits
1: 1 bit
Default: 0
This setting is valid only in no-protocol com-
munications mode. Set the Standard/Cus-
tom setting (word 160, bit 15) to 1 to enable 
this setting. 
A61902
(RS-232C 
Port Settings 
Changing 
Flag)
At the next 
cycle.
(Also can be 
changed with 
STUP (237).)