Omron NT11 - 01-2004, User Manual

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Connection to a PLC by the Host Link (RS-422A Type)
Section 2-5
2-5-2 Parts Required for Connection
The RS-422A cable used for RS-422A communications is not supplied by
OMRON. Make this cable in accordance with the environment (PLC used and
transmission distance between the NT11 and PLC).
One connector, one connector cover and one cable are required to make up a
connecting cable. One connector and one connector cover is supplied with
the PLC. However, a cable of the type recommended by OMRON must be
prepared.
For details on making the cable, refer to Appendix D Making the Cable
(page 153). The table below lists the components supplied with each unit and
the recommended cables.
Check the required parts and prepare them in advance.
Note 1. Always use crimp terminals for wiring.
2. Before connecting or disconnecting cables between devices, make sure
that the power supply to all of the connected devices (NT11, PLC, etc.) is
OFF.
Examples of applicable terminals
2-5-3 Method for Connection
For RS-422A type communication, an RS-422A cable is used as the transmis-
sion channel connecting the NT11 and PLC.
As shown in the figure below, the RS-422A cable is connected directly to the
NT11.
Name Model Maker Remarks
Connector
set XM2S-0911-
S003 OMRON 9-pin connector
Connector and Connector hood
Connector XM2A-0901 9-pin connector
Made by OMRON
Connector
hood XM2S-0911 9-pin connector
Made by OMRON
Connector
set XM2S-0911-
S003
9-pin
Made by OMRON,
connector and
hood included
Cable TKVVBS4P-03 Tachii Electric Wire
Co., Ltd.
Crimp ter-
minals 1.25-N3A
(fork type) Japan Solderless
Terminal MFG Recommended cable size:
AWG22 to 18
(0.3 to 0.75 mm
2
)
Y1.25-3.5L
(fork type) Molex Inc.
Fork type
6.2 mm or less
Round type
6.2 mm or less