Omron NT20S-ST121B-EV3 User Manual page 89

Connecting to the RS-232C Port at the Host
Note
68
The following table shows the words allocated in the DM Area and the set-
tings.
Allocated DM word
Port 1 Port 2
DM32000 DM32010
DM32001 DM32011
DM32006 DM32016
For example, when connecting PTs 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.)
Serial Communications Boards and Serial Communications 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.
CS1W-SCU21
SCU21
RDY
RUN
ERC ERH
SD1 SD2
RD1 RD2
Set the unit number to 0 through F so
UNIT
that it will not duplicate the numbers
F E
1 0
No.
D
3 2
C B used in other Units.
5 4
A
7 6
9 8
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 (PLC Setup) 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 execution of the
STUP instruction.
The following table shows the words allocated in the DM Area and the set-
tings.
Word m = DM30000 + 100 × unit number
Allocated DM word
Port 1 Port 2
m m+10
Value
8200 1:N NT Link mode
000A Communications baud rate (high-speed)
000@ @ = The largest model number of the con-
nected PT (0 - 7)
Value
8200 1:N NT Link mode
Section 2-6
Settings
Settings