Omron Programmable Terminals NT31 NT31C Setup Manual page 78

Connecting to the RS-232C Port at the Host
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.)
Allocation DM area (CH)
Port 1
DM32000
DM32001 DM32001
DM32002
DM32006
When Using the NT Link (1:1) Method
Setting the Front Switches
Set the CPU DIP switches to 4 or 5 in accordance with the port NT31/NT31C is
connected to.
RUN
ERR/ALM
INH
PRPHL/COMM
SYSMAC CS1G
PROGRAMMABLE CONTROLLER
CPU4 2
OPEN
MCPWR BUSY
OPEN
PERIPHERAL
PORT
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.
Writing Value Writing Value
Port 2
DM32010 8000
0000
DM32011 DM32011
0007
DM32012 0000
DM32016 0000
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.
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.
Settings Settings
Host link mode, 2 stop bits, even parity, data
length 7 bits
Communication speed 9600 bps.
Communication speed 19200 bps.
Transmit delay time 0 ms.
No CTS control Unit No.0 for host link
Section 4-1
67