Omron NT11 - 01-2004, User Manual

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Connection to a PLC by the Host Link (RS-232C Type)
Section 2-4
*2: The CQM1H-CPU11 does not have a built-in RS-232C port, so connect to the PT at the peripheral port
with a CS1W-CN118 Connecting Cable.
*3: CPU Units of CVM1/CV-series PLCs without the suffix -EV @ cannot be connected.
2-4-2 Connecting the NT11
Refer to the illustrations below to select the appropriate cable for the unit con-
nectors and connect the NT11 to the PLC.
To make a connector cable, refer to Appendix D Making the Cable (page 153).
!Caution Before inserting or removing the connectors, make sure that the NT11 and the
PLC are turned OFF.
!Caution After connecting a communication cable, always secure it with the screws.
Otherwise the cable may disconnect, causing operation to fail.
!Caution The cable’s tensile load is 30 N. Do not subject it to loads greater than this.
Otherwise a discontinuity may occur, causing operation to fail.
Connecting to a PLC with a 25-pin Connector
Use a connector cable with a 25-pin connector on one end and a 9-pin con-
nector on the other end (NT11 side) to connect the NT11 to a PLC with a 25-
pin connector.
Connecting to a PLC with a 9-pin Connector
Use a connector cable with a 9-pin connector on both ends to connect the
NT11 to a PLC with a 9-pin connector.
The method for connection between the RS-232C ports of the NT11 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.
Host I/F connector
(RS-232C 9-pin type)
C200H,
C200HS
Host link unit/CPU unit
9-pin connector 25-pin connector
RS-232C connector cable
NT11
Host I/F connector
(RS-232C 9-pin type)
C200H,
C200HS
Host link unit/CPU unit
9-pin connector
RS-232C connector cable
9-pin connector
NT11