PART 3: CX-Server Runtime
CHAPTER 3 – Communications OMRON
CX-Server Runtime_Page 32 Revision 2.0
Connecting via an NS-series PT
Overview
An online connection from the CX-Programmer through an NS-series PT to a PLC connected to the PT is
possible.
CX-Programmer NS-series PT PLC
USB, Ethernet, or
Controller Link connection
Serial, Ethernet, or
Controller Link connection
Ladder programs and other data can be uploaded and downloaded.
System Configuration
The CX-Programmer can be connected through an NS-series PT to a PLC across two network layers.
CX-Programmer NS-series PT (See note 1.)
PLC 1
1. Connection between
computer and PT
2. Connection
between PT
and PLC
PLC 2 PLC 3
Network layers
crossed: 1 layer
Network layers
crossed: 2 layers
1. Connection between computer and PT
Connection method Connection
USB Yes
Ethernet Yes
Controller Link Yes
Serial No
Modem No
2. Connection between PT and PLC
Connection Connection method
PLC 1 PLC 2 PLC 3
Ethernet Yes Yes Yes
Controller Link Yes Yes Yes
1:N NT Link Yes No
(See note 2.)
No
(See note 2.)
1:1 NT Link No No No
Host Link No No No
Serial
Memory Link No No No
Note 1: When connecting an NSJ Controller to a computer or PLC, always use the serial port or
Ethernet port on the Display Section. The above connection method is not possible if the NSJ
Controller is connected to an Expansion Unit or serial port on the Controller Section.
Note 2: If you connect the PT to PLC 1 using a serial connection, you will not be able to connect online
to PLC 2 or PLC 3 across the network layers.
Note: The CX-Integrator cannot be used if the computer is connected to the PLC through a PT.
Note: Screen display refresh speed and touch panel response may be slower when the CX-
Programmer is connected through a PT.
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