4 CPU Unit Initialization
4-2
CJ2 CPU Unit Software User’s Manual
4-1 Overview of CPU Unit Initialization
Both hardware settings with the DIP switch and rotary switches on the front of the CPU Unit and soft-
ware settings to set parameters with the CX-Programmer or other software must be made to make the
initial settings required for the CPU Unit.
z DIP Switch
Set the DIP switch according to the application.
z Rotary Switches
A unit number and node address are allocated to the built-in EtherNet/IP port on the CJ2H-CPU6@-EIP
and CJ2M-CPU3@ in the same way as for a CPU Bus Unit. Words are allocated to the built-in Ether-
Net/IP port in the CPU Bus Unit Areas in the CIO Area and DM Area according to the unit number set-
ting.
For details on hardware settings, refer to 3-1 CPU Units in the CJ2 CPU Unit Hardware User’s Manual
(Cat. No. W472).
4-1-1 CPU Unit Initial Settings
Hardware Settings
Location Purpose Setting method
DIP switch on front of
CPU Unit
Main purposes:
• Program write protection: Turn ON pin 1.
• Automatic transfer at startup: Turn ON pin 2.
• Toolbus connection with RS-232C: Turn ON pin 5.
• User-defined pin: Turn ON pin 6.
• Simple backup: Turn ON pin 7.
Make the settings with
the power supply OFF,
and then turn the
power supply ON.
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