Momentum Modbus Plus 170 PNT Series Podręcznik Użytkownika Strona 157

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Using the Ethernet Port
870USE10110 July 2004 157
When the
Processor
Adapter is
Powered-up with
a Configuration
for Specify IP
Address
When the processor adapter is powered-up with a configuration for Specify IP
Address, the following dialog box displays.
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.
When the
Processor
Adapter is
Powered-up with
a Configuration
for Use BOOTP
Server
When the processor adapter is powered-up with a configuration for Use BOOTP
Server, the following dialog box displays.
If the processor adapter is powered up without battery backup, and its IP address
was previously saved to flash, the adapter will issue three BOOTP requests five
seconds apart.
If a BOOTP response is received from the server, the IP address will be assigned
but will not be saved to flash. Use the programming software to save the IP
address to flash. If a power cycle occurs on the processor adapter, the IP address
that is currently saved in flash will be used.
If a BOOTP response is not received from the server, the processor adapter will
use the IP address that is stored in flash. Three ARP broadcasts are made, five
seconds apart, to check for duplicate IP addresses. Then, three gratuitous ARP
broadcasts are made two seconds apart with the station’s MAC address and IP
address.
To Retain
Settings
After setting the module’s address mode, you must save your program to Flash
memory if you want this setting to be retained when power is removed from the
module. This is not necessary if the module is attached to a ring adapter, which
provides battery back up (see p. 337).
Ethernet / I/O Scanner
Ethernet Configuration:
Specify IP Address
Use Bootp Server
Disable Ethernet
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