Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 55)

Publication 1761-UM006E-EN-P - August 2005
ENI/ENIW Configuration (Nodes 241 to 254) 4-15
Node 252 - BOOTP Configuration
The ENI/ENIW allows the BOOTP request to be disabled by clearing
the BOOTP Enable parameter in the channel Configuration File.
BOOTP Enable behaves as follows:
When BOOTP Enable is disabled, the ENI/ENIW will wait for a
manual configuration.
The BOOTP enable/disable setting is only evaluated on power-up.
Changes to the BOOTP configuration will not take effect until the next
power cycle.
Node 251 - Email Server
The TCP/IP address stored in this location defines the mail server. The
ENI/ENIW sends all email requests to this server, which then sends
the email message to the destination.
Node 250 - TCP/IP Configuration
This procedure describes configuration for the TCP/IP parameters.
The TCP/IP parameters are configured by sending a message
Table 4.3 BOOTP Configuration Settings
Node
252
Setting ENI Configuration
Utility Setting Description ENI/
ENIW
Series
0 Obtain via BOOTP and
save initial BOOTP configuration, where ENI/ENIW saves the result in non-volatile RAM
(NVRAM) and uses that saved configuration on subsequent power cycles A, B, C, D
1 Nothing checked IP address must be configured via the Configuration Utility or via a write to node 250. A, B, C, D
2 Obtain via BOOTP and
Fallback special BOOTP where ENI/ENIW saves the result in non-volatile RAM (NVRAM), but
tries BOOTP first. BOOTP is used only to change the IP address of the ENI/ENIW. B, C, D
3 Always obtain via BOOTP traditional BOOTP where ENI/ENIW does not save the result in NVRAM and relies on
the BOOTP response for every power cycle
B, C, D
4 DHCP traditional Dynamic Host Configuration Protocol (DHCP) where the ENI/ENIW does
not save the result in NVRAM and relies on a DHCP response for every boot B, C, D
IMPORTANT
If BOOTP/DHCP is disabled, or no BOOTP/DHCP
server exists on the network, you must use a soft
configuration method to enter or change the IP
address for each ENI/ENIW. See page 4-1 for more
information.