Omron NT21 - SETUP MANUAL 10-2001 Setup Manual page 70

Connecting to the RS-232C Port at the Host
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
*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.
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 0000 Hex, and DM 32006 to 0006 Hex.
Connecting to 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.)
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 RDY
ERC ERH
SD2
SD1
RD1 RD2
UNIT
F E
1 0
No.
D
3 2
C
5 4 B A
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.
The following table shows the words allocated in the DM Area and the settings.
Allocated DM word
Port 1 Port 2
m m+10
m+1 m+11
m+6 m+16
*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.
Value Value
8200 1:N NT Link mode
(*1)
0000 to 0009 Communications baud rate
(standard)
j = The largest model number of
000j
the connected PT (0 – 7)
Set the unit number to 0 through F so
that it will not duplicate the numbers
used in other Units.
Set the unit number to 0 through F so
that it will not duplicate the numbers
used in other Units.
m = DM30000 + (100 × unit number)
Value Value
8200 1:N NT Link mode
(*1)
0000 to 0009 Communications baud rate
(standard)
j = The largest model number of
000j
the connected PT (0 - 7)
Section 4-1
Settings Settings
Settings Settings
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