The Master IP address and Electronic keying feature can increase the system security level for device replacement.
Some devices have a Master IP address parameter so that only one, declared Master, controller has access to the devices.
For more details, refer to Master IP Address Parameter.
Electronic Keying signatures are used to identify the device.
Electronic Keying is information about the network device contained within the firmware of the device (Vendor Code, Product Code, etc.).
When the scanner starts, it compares the electronic keying values of the device with those stored in the application.
If the device values are not the same as the application values, the controller no longer communicates with the device.
For more details, refer to Electronic Keying with EtherNet/IP.
