Installation manual

Publication 1747-RM001G-EN-P - November 2008
13-32 SLC Communication Channels
The host system’s BOOTP configuration file must be updated to service
requests from SLC 5/05 processors. The following parameters must be
configured.
Table 13.11 BOOTP Configuration Parameters
When BOOTP is enabled, the following events occur at power-up.
• The processor broadcasts a BOOTP-request message containing its
hardware address over the local network or subnet.
• The BOOTP server compares the hardware address with the addresses
in its look-up table.
• The BOOTP server sends a message back to the processor with the IP
address and other network information that corresponds to the
hardware address it received.
With all hardware and IP addresses in one location, you can easily change IP
addresses in the BOOTP configuration file if your network needs change.
The BOOTP request can be disabled by clearing the BOOTP Enable
parameter in the channel Configuration File. When BOOTP Enable is cleared
(disabled), the SLC 5/05 uses the existing channel configuration data.
Parameter Description
IP Address A unique IP Address for the SLC 5/05 processor.
Subnet Mask Specifies the net and local subnet mask as per the standard on subnetting
RFC 950, Internet Standard Subnetting Procedure.
Gateway Specifies the IP address of a gateway on the same subnet as the
SLC 5/05 that provides connections to another IP network.
TIP
You can use any commercially available BOOTP server. If
you do not have BOOTP Server capabilities on your
network, and you want to dynamically configure Channel 1,
you can download the free Rockwell Automation BOOTP
server from the Rockwell Automation website. Go to
www.ab.com/networks/bootp/index.html
IMPORTANT
If BOOTP is disabled, or no BOOTP server exists on the
network, you must use SLC 500 programming software to
enter/change the IP address for each processor.