Direct Connection Between Rs-422A Ports At Both Units - Omron NT31 Setup Manual

Connecting to the Host's RS-422A/485 Port

5-2-2 Direct Connection between RS-422A Ports at Both Units

Connecting an NT31/NT31C and Host (RS-422A)
When connecting to the host with 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 with 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 following table. Set the same communication conditions at the NT31/NT31C
by the memory switch. (page 163).
Item
Input/Output board
Communication speed
Data bits length
Stop bits length
Parity
Flow control
The connection method in which the RS-422A ports of an NT31/NT31C and a
host are connected is described here.
NT31/NT31C
Serial port B
25-pin
(RS-422A, 25-pin type)
connector
RS-422A cable with connectors (max. length: 500m)
NT31/NT31C
Wiring When Connecting a C-series Host Link Unit or CPM1 (Host Link)
Applicable units:
C200H-LK202-V1
3G2A5-LK201-EV1
Setting at Host
RS-422A
1200, 2400, 4800, 9600, 19200, 38400 bps.
7 bits, 8 bits
1 bit, 2 bits
None, even, odd
None, XON/XOFF
Host link/CPU/
Communication unit
RS-422A
Section 5-2
SYSMAC
CS-series PLC,
C-series PLC,
CVM1/CV-series
PLC, SRM1
9-pin connector or
25-pin connector
Host
115