Omron NT21 - SETUP MANUAL 10-2001 Setup Manual page 73

Connecting to the RS-232C Port at the Host
Reference: Serial Communications Boards and Serial Communications Units with lot num-
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 effective 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
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.)
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.
CS1W-SCU21
SCU21
RUN
ERC
SD1
RD1
UNIT
F E
1 0
No.
3 2
5 4
7 6
9 8
CJ1W-SCU41
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 effective by turning the power ON, restart-
ing the Unit, restarting the communication port, or execution of the STUP
instruction.
Value Value
8200 1:N NT Link mode
000A Communications baud rate (high-speed)
j = The largest model number of the
000j
connected PT (0 – 7)
RDY
ERH
SD2
RD2
Set the unit number to 0 through F so
D
that it will not duplicate the numbers
C
B A
used in other Units.
Set the unit number to 0 through F so
that it will not duplicate the numbers
used in other Units.
Section 4-1
Settings Settings