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4-1SectionConnecting to the RS-232C Port at the Host
67
Setting the Front Switches
Set the CPU DIP switches to 4 or 5 in accordance with the port NT31/NT31C is
connected to.
DIP switches (inside the battery storage)
• Set SW4 to ON (establishing communication in ac-
cordance with PC Setup) when connecting the
NT31/NT31C to the peripheral port.
• Set SW5 to OFF (establishing communication in ac-
cordance with PC Setup) when connecting the
NT31/NT31C to the RS-232C port.
Peripheral port
This is used mainly for
connection to the
Programming Device.
(This also supports the
RS-232C unit connection.)
RS-232 port
This is used mainly for
connection to the
RS-232C unit.
(This also supports the
CX-Programmer.)
SYSMAC CS1G
PROGRAMMABLE CONTROLLER
CPU4
2
OPEN
OPEN
PERIPHERAL
PORT
BUSY
RUN
ERR/ALM
INH
PRPHL/COMM
MCPWR
Connecting to CS1-series Serial Communications Board
Serial Communications Board equipped with a RS-232C port for CS1-series
CPU Units: CS1W-SCB41/21
Allocation DM Area Settings for CPU Unit
Settings are written from the Programming Device (a Programming Console or
CX-Programmer) directly into the allocation DM area (system setting area) of
the CPU. After the settings are written, they become effective by turning the
power ON, restarting the unit, restarting the communication port, or execution of
the STUP command.
In the following, the channel numbers of the allocation DM area and the settings
are shown.
Allocation DM area (CH)
Writing Value
Settings
Port 1 Port 2
W
r
iti
ng
V
a
l
ue
S
e
tti
ngs
DM32000 DM32010 8000
Host link mode, 2 stop bits, even parity, data
length 7 bits
DM32001
DM32011
0000 Communication speed 9600 bps.
DM32001
DM32011
0007 Communication speed 19200 bps.
DM32002 DM32012 0000 Transmit delay time 0 ms.
DM32006 DM32016 0000 No CTS control Unit No.0 for host link
When Using the NT Link (1:1) Method
Compatible Host Units
Some models and series of OMRON PCs have the NT link (1:1) function built in.
With CQM1H PCs, a Serial Communications Board can be added to provide 1:1
NT Link communications. Some C200HX/HG/HE(-Z)E CPUs can be connected
by the NT link (1:1) method by installing a Communication Board.
Check the model and series of the PC against the type of CPU before making the
connections.