4-11
4 Support Software
CJ2 CPU Unit Hardware User’s Manual
4-2 Connection Methods
4
4-2-3 Connecting to Ethernet (CJ2H-CPU6@-
EIP and CJ2M-CPU3@ Only)
Precautions for Correct UsePrecautions for Correct Use
Connecting to a Programming Device through the built-in EtherNet/IP port will not be possible if
the following errors occur:
• I/O bus error
• Too many I/O points error
• Unit number duplication error
• Rack number duplication error
• I/O setting error
If any of the above errors occurs and connecting to the Programming Device through the built-in
EtherNet/IP port is not possible, connect through the USB port.
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