Schneider Electric Processor Adapter - Manual (Page 151)

Using the Ethernet Port
870 USE 101 10 V..2 151
Assigning Ethernet Address Parameters, Continued
When the
Processor
Adapter is
Power-up with a
Configuration for
“Specify IP
Address”
If the processor adapter is powered-up without battery backup and its IP address
was previously saved to flash; the adapter will listen for any Bootp messages but
will not will not issue any Bootp requests. Instead it will use the IP address that is
specified in the configuration. Then, three ARP broadcasts are made, five seconds
apart, to check for duplicate a IP address. Then, three gratuitous ARP broadcasts
are made, two seconds apart, with the station’s MAC address and IP address.
To Retain the IP
Address After setting the module’s IP address, you must save it to flash memory if you want
this setting to be retained when power is removed from the module. This is
necessary even if the module is attached to a ring adapter that provides battery
back up. See
Saving to Flash with Concept on page 399.