Bradley Smoker PLC-5 user manual 11-6Communicating with Devices on an Ethernet Network

11-6Communicating with Devices on an Ethernet Network

To enable BOOTP, use the Ethernet channel 2 configuration screen in your programming software. Specify YES for BOOTP Enable.

IMPORTANT

If you change this field from NO to YES, the change does not take effect until you cycle power.

Specify further configuration information using this screen.

When BOOTP is enabled, the following events occur at power-up:

•The controller 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 in the BOOTPTAB file.

•The BOOTP server sends a message back to the controller 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.

If you have BOOTP enabled and the message BOOTP response not received appears, check the cabling connections and the BOOTP server system.

Publication 1785-UM012D-EN-P - July 2005