Appendix - Omron DEVICENET SAFETY - SYSTEM CONFIGURATION 07-2009 System Configuration Manual

A-1 Connecting to the Network via a CS/CJ-series PLC
A-1-1 Connecting to the DeviceNet Network
The Network Configurator can be connected online to the DeviceNet network via a serial communications port
on a CS/CJ-series CPU Unit or via a CS/CJ-series DeviceNet Unit, as shown in the following figure. This sec-
tion describes the procedure.
Refer to 3-3 Connecting to the Network to connect to the network via the USB port on the NE1A-series Con-
troller, a DeviceNet Interface Card installed in the computer, or an EtherNet/IP port on an NE1A-series Control-
ler that supports EtherNet/IP.
1. Connect the COM port on the computer to a serial communications port on the CS/CJ-series CPU Unit (i.e.,
the peripheral port or the RS-232C port) or a Serial Communications Board/Unit (i.e., a RS-232C port or a
RS-422A/485 port) using a peripheral bus (ToolBus) or Host Link connection.
To connect to the DeviceNet network, the PLC must have a CS/CJ-series DeviceNet Unit (i.e., the CS1W-
DRM21(-V1) or CJ1W-DRM21).
CS/CJ-series
DeviceNet Unit
DeviceNet network
The DeviceNet can be connected to crossing multiple network layers (3 layers max.) using serial communica-
tions, as shown in the following figure.
Controller Link Unit
Serial Connection
(ToolBus or Host Link)
Controller Link network
Across network layers
Appendix A
Network Configurator
COM port
Serial connection (ToolBus or Host Link)
Serial communications port (peripheral port or
RS-232C port) of the CS/CJ-series CPU Unit or
serial communications port (RS-232C port) of a
Serial Communications Board/Unit
Network Configurator
COM Port Controller Link Unit
CS/CJ-series DeviceNet Unit
DeviceNet network
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