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Connecting to the RS-232C Port at the Host Section 4-1
Connecting to CS-series Serial Communications Board
Serial Communications Board equipped with a RS-232C port for CS-series
CPU Units: CS1W-SCB21(-V1)/41(-V1) (See note.)
Note Cannot be used with the CS1D-CPU65H/67H.
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 Unit. After the settings are written, they become effective by turn-
ing the power ON, restarting the Unit, restarting the communications port, or
execution of the STUP command.
In the following, the channel numbers of the allocation DM area and the set-
tings are shown.
Connecting to a CS/CJ-
series Serial
Communications Unit
CS/CJ-series Rack-mounting Unit:
CS1W-SCU21(-V1)
CJ1W-SCU21(-V1)/41(-V1)
Setting the Front-panel Switches
Set the unit number of the Serial Communications Unit by using the rotary
switch located on the front panel. Set each switch with a flat blade screwdriver
so that the values or symbols in the setting value window agree with the fol-
lowing.
DIP switches (inside the battery storage)
SYSMAC CS1G
PROGRAMMABLE CONTROLLER
CPU42
OPEN
OPEN
PERIPHERAL
PORT
BUSY
RUN
ERR/ALM
INH
PRPHL/COMM
MCPWR
• Set SW4 to ON (establishing communications in
accordance with PC Setup) when connecting the
NT631/NT631C to a peripheral port.
• Set SW5 to OFF (establishing communications
in accordance with PC Setup) when connecting
the NT631/NT631C to a peripheral 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.)
Allocation DM area (words) Writing Value Settings
Port 1 Port 2
DM32000 DM32010 8000 Host link mode, 2 stop bits, even parity, data
length 7 bits
DM32001 DM32011 0000 Communications speed 9600 bps.
0007 Communications speed 19200 bps.
DM32002 DM32012 0000 Transmit delay time 0 ms.
DM32003 DM32013 0000 No CTS control Unit No.0 for host link