Bradley Smoker PLC-5 user manual Using Bootp to Enter Configuration Information, Broadcast Address

Communicating with Devices on an Ethernet Network 11-5

This Field Specifies Configure by Doing the Following

Advanced Functions

Broadcast Address	The broadcast address to which the
	controller should respond.

See page 11-9for information about advanced network functions, including the use of broadcast addressing.

This function does not allow for sending one message simultaneously to multiple PLC-5E controllers.

Subnet Mask	The controller’s subnet mask.	See page 11-11for information about subnetworks and gateways.
	The subnet mask is used to interpret IP
	addresses when the network is
	divided into subnets.
Gateway Address	The IP address of the gateway that	See page 11-11for information about subnetworks and gateways.
	provides a connection to another IP
	network.
	This field is required when you
	communicate with other devices not
	on a local subnet.
Link ID	A DH+ link number	Enter a link ID number. The valid range is 0-199.
	Use the link ID number to identify the
	network when configuring a
	ControlLogix system using the
	Gateway software.

You can also use BOOTP to obtain subnet masks and gateway addresses. See page 11-12.

Using BOOTP to Enter Configuration Information

BOOTP is a protocol that will supply the controller with configuration information at power-up. BOOTP lets you dynamically assign IP addresses to controllers on the Ethernet link.

To use BOOTP, a BOOTP server must exist on the local Ethernet subnet. The server is a computer (either a personal computer, VAX, or UNIX system) that has BOOTP-server software installed and reads a text file containing network information for individual nodes on the network.

Publication 1785-UM012D-EN-P - July 2005