Hardware reference guide

Ethernet Modules
35013379 02 October 2007 331
DHCP Server
Dynamic Host Configuration Protocol (DHCP) is a superset of the BOOTP Protocol.
Your 140NOE771x1 has a DHCP Server. The DHCP Server is compliant with RFC
1531. The DHCP Server can be used to provide the IP configuration to devices
using BOOTP or devices using DHCP.
The DHCP Server has entries that use the MAC address to serve the IP
configuration and entries in the Server that use the role name to serve the IP
configuration. See the Address Server Configuration/Faulty Device Replacement
chapter in the Quantum NOE 771 xx Ethernet Modules User Guide for details on
configuring your NOE’s address Server.
If you are migrating a BOOTP configuration from a 140NOE771x0 module to the
new 140 NOE 771 x1 module, see the Address Server Configuration/Faulty Device
Replacement chapter in the Quantum NOE 771 xx Ethernet Modules User Guide for
details on automatic upgrade of your configuration for the new DHCP Server.
Global Data Global Data service is a real time Publisher/Subscriber mechanism providing the
most efficient data exchange for PLC application coordination.
Devices supporting Global Data are arranged in a distribution group for the purpose
of application variable exchange and synchronization. Each Global Data device can
publish up to one network (application) variable and subscribe up to 64 network
(application) variables.
The Quantum NOE’s embedded Web Global Data Configuration Page provides a
configuration screen to determine which and how many application variables are
exchanged with this service. After configuration, the exchanges between all stations
belonging to the same distribution group are done automatically.
The Global Data service uses the 4x register space for Global Data exchanges.
Note: The DHCP Server is available on the 140NOE771x1 models.
Note: OPERATING ON A CORPORATE NETWORK
Before placing the NOE on a corporate network, Schneider Automation
recommends that you discuss the installation with your MIS department. It is likely
that your company's corporate network has at least one DHCP Server running
already. If the NOE's DHCP Server is running on the same network, it may disturb
the network.
To avoid any possible problem related to the NOE's DHCP Server on the corporate
network, you must ensure that the DHCP Server is not running in the NOE by not
having address entries in the configuration. If there are no configured devices in
the address Server configuration page, then the NOE will not start the DHCP
Server.
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com