Omron NT21 - SETUP MANUAL 10-2001 Setup Manual page 74

Connecting to the RS-232C Port at the Host
When Using the Memory
Link Method
4-1-2 Connecting Directly between RS-232C Ports
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
In the memory link method, the connection can be made to a personal computer
with RS-232 and an FA computer, etc.
When connecting to the host in the memory link method, it is necessary to create
a program for the memory link at the host side.
The following are the communication conditions that can be used in the memory
link method. For the host (a personal computer, an FA computer, etc.), its setting
should be compatible to one of the communication conditions listed in the follow-
ing table. Set the same communication conditions at the NT21 by the memory
switch. (page 132).
Item
Input/Output port
Baud rate
Data bits
Stop bits
Parity
Flow control
The method for connection between the RS-232C ports of the NT21 and the host
is described here.
Recommended Connector Cable
When making the connector cable, as far as possible use the recommended
connectors, connector hoods, and cables indicated in the table below. Some
Units come supplied with one connector and one connector hood.
Check the required components and prepare them in advance.
Name Model
XM2A-0901
Connector
XM24-2501
Word m = DM30000 + 100 × unit number
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)
Settings at the host
RS-232C
1,200, 2,400, 4,800, 9,600, 19,200, or 38,400 bps.
7 bits, 8 bits
1 bits, 2 bits
None, even, odd
None, RS/CS, XON/XOFF
Remarks
9-pin
Made by OMRON
25-pin
Made by OMRON
Section 4-1
Settings Settings
Delivered with
CS-series CS1G/CS1H,
CS1G-H/CS1H-H
CJ-series CJ1G
C-series CQM1,
C200HS,
C200HX/HG/HE(-Z)E,
CVM1/CV-series CPU
Units
CV500-LK201
CV500-LK201
C200H-LK201-EV1
63