Connecting Directly Between Rs-232C Ports - Omron Programmable Terminals NT631 Setup Manual

Connecting to the RS-232C Port at the Host
When Using the Memory
Link Method
4-1-2

Connecting Directly between RS-232C Ports

Allocated DM Area words
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 com-
puter 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 communications 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 communications condi-
tions listed in the following table. Set the same communications conditions at
the NT631/NT631C by the memory switch. (page 160).
Item
Input/Output port
Communications speed
Data bits length
Stop bits length
Parity
Flow control
The method for connection between the RS-232C ports of the NT631/
NT631C and the host is described here.
NT631/NT631C
R E S E T
R D
TR M
R D B
S D A
S D B
C S A
C S B
2 4V
+D C PR I N TER PORT B PORT A
Serial port A or B
(RS-232C, 9-pin type)
9-pin connector
Cable with RS-232C connectors
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.
Word m = DM30000 + (100 × unit number)
Setting Setting Contents
8200 1:N NT Link Mode
000A Baud rate (standard)
000@ @ = The highest unit number of the con-
nected PTs (0 to 7)
Settings at the host
RS-232C
1200, 2400, 4800, 9600, 19200, 38400 bps.
7 bits, 8 bits
1 bits, 2 bits
None, even, odd
None, RS/CS, XON/XOFF
Host Link Unit or CPU Unit
Section 4-1
SYSMAC
CS/CJ-series PLC,
C-series PLC,
CVM1/CV-series PLC,
SRM1
9-pin connector
or
25-pin connector
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