1-3
1 Features and System Configuration
CJ-series DeviceNet Units Operation Manual for NJ-series CPU Unit(W497)
1-1 DeviceNet Unit Features
1
z User-set Allocations without the CX-Integrator
With CJ-series DeviceNet Units, you can allocate remote I/O communications in any area without
the CX-Integrator simply by using device variables for CJ-series Unit.
If you use the CX-Integrator, you can change the node address order for more flexible I/O alloca-
tions. This feature enables the proper area allocation for any application and simplifies program-
ming, which helps you make effective use of the CPU Unit Area on the memory used for CJ-series
Unit.
Note Refer to 4-4 User-set Allocations for details.
z Slave Functions
You can use CJ-series DeviceNet Units as both masters and slaves, and you can execute master
and slave communications either separately or simultaneously. A Unit that is used as a slave sup-
ports fixed and user-set allocations.
Note Refer to Remote I/O Slave Communications for details.
z Multiple Controllers in a Single Network
You can connect multiple DeviceNet Units in a single network for message communications between
CPU Units as well as for remote I/O communications between Controllers and slaves in multiple
groups. This feature allows a DeviceNet to be used as a common bus that can integrate all types of
control with less wiring.
Note Refer to 4-1 Master Remote I/O Communications for details.
CJ-series DeviceNet Unit
(Master)
Master Controller
DeviceNet
64 nodes max.
(Slave)
Slave Controller
CJ-series
DeviceNet Unit
CJ-series DeviceNet Unit
(Master)
Master Controller
(Slave)
Master Controller
Remote I/O
Slave
Controller
Remote I/O
DeviceNet
CJ-series
DeviceNet Unit
(Master)
CJ-series
DeviceNet Unit
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