1:N Connection Among Rs-422A Ports; 1:N Connection Among Rs-485 Ports - Omron NT31 Operation Manuals

Connecting to the Host's RS-422A/485 Port
5-2-5

1:N Connection among RS-485 Ports

Reference: Communication using the RS-422A type NT link (1:N) method is possible when a
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The connection method in which the RS-485 ports of multiple NT31/NT31Cs and
one host are connected in a 1:N connection is described here.
NT31/NT31C
Max. 2 m
RS-485 cables
(max. total length 500 m)
24V
DC PRINTER PORT B
serial communication board is installed at CS1 series CS1G/H, and when a com-
munication board is installed at the C200HX/HG/HE (–ZE).
Serial port B
(RS-485, 25-pin type)
25-pin connector
Relay terminal block
Section 5-2
CPU
CS1G/H
C200HX/HG/HE-ZE
9-pin connector