68
Connecting to the RS-232C Port at the Host
Section 2-6
The following table shows the words allocated in the DM Area and the set-
tings.
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.)
Note
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.
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 = D 100
×
unit number
Allocated DM word
Value
Settings
Port 1
Port 2
DM32000
DM32010
8200
1:N NT Link mode
DM32001
DM32011
000A
Communications baud rate (high-speed)
DM32006
DM32016
000
@
@
= The largest model number of the con-
nected PT (0 - 7)
Allocated DM word
Value
Settings
Port 1
Port 2
m
m+10
8200
1:N NT Link mode
CS1W-SCU21
CJ1W-SCU41
SCU21
RUN
ERC
SD1
RD1
RDY
ERH
SD2
RD2
No.
FE
D
C
B
A
9
8
7
6
5
4
32
10
UNIT
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.
Summary of Contents for NT20
Page 1: ...Programmable Terminal Cat No V091 E1 01 NT20 USER S MANUAL ...
Page 2: ...NT series Programmable Terminal User s Manual Produced March 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 15: ...xvi ...
Page 21: ...xxii EC Directives 6 ...
Page 37: ...16 Before Operating Section 1 6 ...
Page 153: ...132 Transferring the Resource Data Section 3 11 ...
Page 185: ...164 Numeral Setting Section 4 8 ...
Page 267: ...246 Key to Programs Section 6 8 ...
Page 281: ...260 Specifications Appendix A ...
Page 285: ...264 Transporting and Storing PTs Appendix C ...
Page 303: ...282 Function Restrictions Depending on the Support Tool Appendix I ...
Page 307: ...286 Index ...
Page 309: ...288 Revision History ...