Address Server Configuration/Fast Device Replacement

Overview

The address server provides two capabilities:

Standard BOOTP server behavior: Enter the MAC address and IP configuration. The NOE BOOTP server will provide the IP configuration when the device sends a BOOTP request.
Fast Device Replacement (FDR) behavior: Enter the role name or the MAC address of the device. The device will send its role name or the MAC address with its DHCP request. With the DHCP response from the NOE, the device will receive its IP Configuration, plus the name and location of a configuration file.

The next step for an FDR-compliant device is to download its configuration from the NOE.

NOTE: Consult your Schneider Electric sales representative for the current list of FDR-compliant devices.

The address server in the NOE supports both modes at the same time. You select a mode by entering either the MAC address or the role name in the Address Server Node Configuration page. You may enter only one or the other, but not both.

The Fast Device Replacement capability allows automatic configuration of FDR-compliant devices.

Identifying a Role Name

Role names play an important role in Fast Device Replacement. A role name is a logical name that the user assigns to a device, a logical name that has a meaning within the application. Example role names might be:

ENT_6: The sixth Momentum ENT in your application.
OUTPUT_VALVE_2: The second output valve in your application

NOTE: Role names are case-sensitive.

Role Name

The logical role name should be written on devices. The technician can get the new device from stores, enter the corresponding role name into the device, and place the device in the system. The device automatically gets its configuration and starts running with no further input from the technician. This process is designed to get your machine up and running quickly. All the technician has to do for any FDR compliant device is to enter the role name into the new device.

Address Server Limits

This table displays the parameters and limits of the address server:

Parameter	Limit
Maximum number of address server entries	128
Maximum size of the configuration file per device	4K bytes
Total size of Fast Device Replacement storage	512K bytes
Maximum role name size	16 Characters

NOTE: For the DHCP server to work correctly the following must be observed.

Address class and subnet class configured for the devices must match.
Address class of the NOE and of the devices must be the same.

Operating on a Corporate Network

Keep these points in mind when operating on a corporate network:

Before placing the NOE on a corporate network, Schneider Electric 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 have to 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.

Available FDR Agents

Three FDR agents are available:

Momentum ENT
Micro ETZ
ATV58

The role-name.prm configuration files are stored in the NOE in non-volatile memory. Therefore, after a power failure all configurations will be available.

BOOTP and DHCP Compatible Devices

Use either the MAC address or the role name to assign IP addresses. Therefore, you may use the DHCP server with devices that support BOOTP only, such as Momentum ENT v1.