300
PLC Setup Section 7-1
NT Link Settings
Mode: Communications Mode
Baud Rate (bps)
NT Link Max. (Maximum Unit Number in NT Link Mode
)
Peripheral Bus Settings
Communications Settings
Mode: Communications Mode
Programming 
Console address
Settings Function Related 
flags and 
words
When set-
ting is read 
by CPU Unit
Word Bit(s)
+160 8 to 11 02: 1:N NT Link
Default: 0
This setting determines whether the RS-
232C port will operate in host link mode or 
another serial communications mode.
Note Communications will not be possible 
with PTs set for 1:1 NT Links.
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)
+161 0 to 7 00: Standard
0A: High-speed NT 
Link*
Default: 00
* Set to 115,200 bps when setting this value 
from the CX-Programmer. To return to the 
standard setting, leave the setting set to 
“PLC Setup” and set the baud rate to 9,600 
bps.
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)
+166 0 to 3 0 to 7
Default: 0
This setting determines the highest unit 
number of PT that can be connected to the 
PLC.
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: PLC Setup (cus-
tom)
Default: 0
*The default settings are for a baud rate of 
9,600 bps.
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 8 to 11 04: Peripheral bus
Default: 0
This setting determines whether the RS-
232C port will operate in host link mode or 
another serial communications mode. (Host 
link can be specified with 00 or 05.) 
The Peripheral Bus mode is for communica-
tions with Programming Devices other than 
the Programming Console.
A61902
(RS-232C 
Port Settings 
Changing 
Flag)
At the next 
cycle.