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Connecting to the RS-232C Port at the Host Section 4-1
Reference: CS-series Serial Communications Boards and Units with lot number 991220
(12/20/99) and later support the high-speed 1:N NT Link. Boards and Units
with earlier lot numbers cannot be used.
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.
For example, when connecting PTs with model numbers 3, 4, 5, and 6 to port
1, set the value 8200 hex to DM32000, 000A hex to DM32001, and 0006 hex
to DM32006.
Connecting to a CS/CJ-series Serial Communications Unit
A CS/CJ-series Rack-mounting Unit: CS1W-SCU21(-V1),
CJ1W-SCU21(-V1)/41(-V1)
Reference: CS-series Serial Communications Boards and Units with lot number 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 fol-
lowing.
Allocation DM Area Settings for CPU Unit
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 table, the channel numbers of the allocation DM area and set-
tings are shown.
Allocated DM Area words Setting Setting Contents
Port 1 Port 2
DM32000 DM32010 8200 1:N NT Link Mode
DM32001 DM32011 000A Baud rate (standard)
DM32006 DM32016 000@ @ = The highest unit number of the con-
nected PTs (0 to 7)
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
Set the unit number to 0 through F so
that it will not overlap with the numbers
used in other units.