User manual

Hot Standby
33002479 06 07/2008 313
NOE Configuration and Hot Standby
TCP/IP
Configuration
When an NOE goes into service the first time, the NOE attempts to get its IP address
from a BOOTP server. If a BOOTP server is not available, the NOE derives its IP
address from its MAC address. Connecting to a BOOTP server or deriving the IP
address from a MAC address gives you a connection to the NOE, and you can then
download a project to the PLC.
All standard rules apply to IP addressing with the additional restriction that the IP
address cannot be greater than 253 or broadcast address minus 2. Also, no other
device can be assigned the configured IP + 1 address.