Omron SYSMAC CJ1W-EIP21, Operation Manuals

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4 Determining IP Addresses
4-8
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
Precautions for Correct Use Precautions for Correct Use
If there is more than one node with the same IP address in the EtherNet/IP network, the Ether-
Net/IP Unit will connect to the node that it detects first. An IP Address Duplication Error will not
occur.

Online Connection Procedure
Connect the CPU Unit and the computer that runs the Sysmac Studio via USB or Ethernet, and then
perform the following procedure.
1
Select Controller
−
Communications Setup and click the OK Button in the Sysmac Studio
Project Window.
Additional Information
• If there is an error in the set IP address, the NJ-series CPU Unit behaves as follows:
• The NET RUN indicator on the CPU Unit does not light and the NET ERR indicator flashes
red.
• A TCP/IP Basic Settings Error is recorded in the event log.
Connect the Sysmac Studio through the NJ-series CPU Unit and correct the setting of the IP
address.
1:1 Connection 1:N Connection
Direct Connection
EtherNet/IP Connection
EtherNet/IP Connection