Omron Sysmac NJ-series User Manual page 217

Additional Information
If the following dialog box appears in the Network Configurator when you go online with an
NJ/NX-series CPU Unit, refer to the following table for possible causes and corrections.
The cable is not connected correctly.
Connection with the Controller is blocked
due to the firewall settings.
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
Assumed cause
7 Tag Data Link Functions
Correction
Check if the cable is disconnected or loose.
If connection with the Controller is blocked due to the
firewall settings, disable the blocking.
For the firewall settings, refer to A-4 Precautions for
Using the Network Configurator on Windows XP, Win-
dows Vista, or Windows 7.
7
7-57