Connecting with a 1:1 NT Link
Section 3-4
Supported Host Units
Some models and series of OMRON PLCs have a built-in 1:1 NT Link func-
tion.
Some PLCs can also be connected in a 1:1 NT Link by adding a Serial Com-
munications Board or Communications Board.
When connecting the PT to a PLC, check the series and model of the PLC
and the model of the Board mounted to the PLC.
Refer to Appendix E Standard Models for details on the Units that can be con-
nected to NP-series PTs as hosts using RS-232C, RS-422A or RS-485 com-
munications in a 1:1 NT Link.
Precautions
for Correct Use
CS/CJ series CPU Units cannot be connected in a 1:1 NT Link. Use a
1:1 connection through 1:N NT Links (normal or high speed). For
details, refer to 3-5 Connecting with 1:N NT Links or 3-6 High-speed
1:N NT Links .
Connecting to CPM2C
PLCs
The CPM2C has a single connector that is the same shape as a CS-series
peripheral port. Internally, the connector has signal lines that are for use with
the CPU's built-in RS-232C port and the peripheral port. Therefore, when
using the CPM2C, use the settings for the CPU's built-in RS-232C port or for
the peripheral port according to the converter cable and port used. When
using a CPM2C1-CIF21 Simplified Communications Unit, connect it to the
RS-232C port.
Refer to the CPM2C Operation Manual (W356) for details.
Use CS1W-CN118 Connecting Cable to connect the CPM2C to the NP-series
PT using the built-in RS-232C port of the CPM2C. The peripheral port cannot
be used to connect the PT.
Port for connecting PT
CS1W-CN118 port (D-Sub 9-pin)
PLC Setup
Set for built-in RS-232C.
CS1W-CN118 CPM2C
RS-232C port
(D-SUB 9-pin female)
When using a CPM2C1-CIF21 Simplified Communications Unit, connect it to
the RS-232C port.
RS-232C port
25
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