Omron CJ1W-EIP21 Operation Manuals page 106

4 Determining IP Addresses
Additional Information
If you cannot obtain the IP address from the BOOTP server or the obtained IP address is not cor-
rect, select the Fixed setting Option in the IP Address Area and manually set the IP address,
subnet mask, and default gateway. Requests to the BOOTP server to obtain the IP address will
continue if there is a failure to connect to the BOOTP server.
Obtaining the IP Address from the BOOTP Server Once When the Power Is Turned ON
and Then Not Allow It to Change
After the I/O address is downloaded, the IP address from the BOOTP server is automatically
saved in the EtherNet/IP Unit and then the same address is used.
Additional Information
• The TCP/IP Settings Display is not updated even if the IP address is obtained normally from
the BOOTP server. To check the IP address that was obtained from the BOOTP server on the
TCP/IP Display, upload the project from the NJ-series Controller.
• If the Controller power supply is turned ON when the IP address was not normally obtained
from the BOOTP server, the setting remains at the default setting (i.e., at a fixed setting).
• After the IP address is obtained from the BOOTP server, the EtherNet/IP Unit IP address set-
ting is automatically set to Fixed setting.
4-6 CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)