4-1SectionConnecting to the RS-232C Port at the Host
62
CPU Unit Allocation DM Area Settings
Setting
is written from the Programming Device
(a Programming Console or CX-
Programmer) directly into the allocated DM Area (PC Setup) of the CPU Unit.
After
the setting is written, it becomes ef
fective by turning the
power ON, restart
-
ing the Unit, restarting the communication port, or execution of the STUP
instruction.
The
following table shows the words allocated in the DM Area and the settings.
Allocated DM word
ngs
DM32000 DM32010 8200 1:N NT Link mode
DM32001 DM32011 000A Communications baud rate (high-speed)
DM32006 DM32016 000j
j = The largest model number of the
connected PT (0 – 7)
For
example, when connecting PT
s with model
numbers 3, 4, 5, and 6 to port 1,
set
DM 32000 to 8200
Hex, DM 32001 to 000A Hex, and DM 32006 to 0006 Hex.
Connecting to a CS/CJ-series Serial Communications Unit
A CS-series Rack-mounted Unit: CS1W-SCU21
CJ-series: CJ1W-SCU41 (Port 2 is an RS-232C port.)
Reference: Serial
Communications Boards and Serial Communications Units with lot num
-
ber
991220
(12/20/99) and later support the high-speed 1:N NT Link. Boards and
Units with earlier lot numbers cannot be used.
Setting the Front 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 following.
Set
the unit number to 0 through F so
that it will not duplicate the numbers
used in other Units.
SCU21
RUN
ERC
SD1
RD1
RDY
ERH
SD2
RD2
No.
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
UNIT
CS1W-SCU21
CJ1W-SCU41
Set the unit number to 0 through F so
that it will not duplicate the numbers
used in other Units.
Allocation DM Area Settings for CPU Unit
Setting
is written from the Programming Device
(a Programming Console or CX-
Programmer) directly into the allocated DM Area (PC Setup) of the CPU Unit.
After
the setting is written, it becomes ef
fective by turning the
power ON, restart
-
ing the Unit, restarting the communication port, or execution of the STUP
instruction.
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