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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), CS1W-SCB41(-V1) (See note.)
Note Cannot be used with the CS1D-CPU65H/CPU67H.
CPU Unit Allocation DM Area Settings
Setting is 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 setting is written, it becomes effective by turning the
power ON, restarting the Unit, restarting the communications port, or execu-
tion of the STUP command.
In the following, the channel numbers of the allocation DM area and settings
are shown.
*1
Set any value between 0000 and 0009 Hex for the communications baud
rate. The same baud rate will be used regardless of the value as long as it
is between 0000 and 0009 Hex.
When connecting PTs with model numbers 3 to 6 to port 1, for example, set
the value 8200 Hex to DM32000, 0000 Hex to DM32001, and 0006 Hex to
DM32006.
Connecting to CS/CJ-series Serial Communications Unit
CS/CJ-series Rack-mounting Unit: CS1W-SCU21(-V1), CJ1W-SCU21(-V1),
CJ1W-SCU41(-V1)
Peripheral port
RS-232 port
DIP switches (inside the battery storage)
SYSMAC CS1G
PROGRAMMABLE CONTROLLER
CPU42
OPEN
OPEN
PERIPHERAL
PORT
BUSY
RUN
ERR/ALM
INH
PRPHL/COMM
MCPWR
This is used mainly for
connection to the
Programming Device.
(This also supports the RS-
232C unit connection.)
This is used mainly
for connection to the
RS-232C unit.
(This also supports
the CX-Programmer.)
• Set SW4 to ON (establishing communications in
accordance with PLC Setup) when connecting
the NT31/NT31C to the peripheral port.
• Set SW5 to OFF (establishing communications
in accordance with PLC Setup) when
connecting the NT31/NT31C to the RS-232C
port.
Allocated DM Area words Setting Setting Contents
Port 1 Port 2
DM32000 DM32010 8200 NT link (1:N) mode
DM32001 DM32011
0000 to 0009
(*1)
Communications baud rate (stan-
dard)
DM32006 DM32016 000@ @ = The largest model number of
the connected PT (0 – 7)
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