Using BOOTP or Stored IP
 
About us
Using an IP Address Served from a BOOTP Server
When using BOOTP or stored IP, you should configure the device’s configuration (runtime) parameters. If you do not configure the configuration parameters, the device will use a set of default parameters that may not be appropriate for your system.
To serve the IP address by BOOTP server:
Step
Action
1
Go to Communication Adapter Configuration page of the device.
2
Configure the configuration (runtime) parameters for your system.
3
Enter the configuration password (httpcfguser).
4
Enter the MAC address and IP address into the address table of either your BOOTP or a DHCP server.
  • To obtain an IP address by a BOOTP server, Schneider Electric recommends using the Ethernet Configuration Tool available with the Concept panel software.
5
Reboot the device.
Using an IP Address Stored in Flash
If the Momentum 170ENT11001 has IP parameters stored in Flash memory, the device uses those stored IP parameters.
To save an IP address in Flash:
Step
Action
1
Go to Communication Adapter Configuration page of the device.
2
Configure the configuration (runtime) parameters for your system.
3
Go to the Configure IP Parameters Web page.
4
Enter the IP parameters.
5
Select the Fall Back to Stored IP Parameters in the absence of an address server check box (IPFallBack flag).
6
Enter the configuration password (httpcfguser).
7
Click the Update Stored Values button.
8
Select reboot.
When the Momentum 170ENT11001 reboots, it will issue BOOTP requests for 30 seconds and then use the IP address stored in Flash.
Using a Default IP Address
If you do not have an FDR server or a BOOP/DHCP server available, access the Momentum 170ENT11001 by using its default IP address. When the device boots up and no BOOTP reply is received and there are no IP parameters stored in Flash, the Momentum 170ENT11001 will derive its default IP parameters from its MAC address. Accessing the device through its default IP address may require adding a route to your PC.
NOTE: When the Momentum 170ENT11001 uses default IP parameters, the device is in safe I/O mode (I/O communication is disabled) and does not communicate with the inputs and outputs of the module.
Obtaining an IP Address
When powered up, the device uses the following decision path to obtain an IP address.
If...
Then ...
Power is applied to the device
Device sends a message to a BOOTP/DHCP server requesting an IP address.
  • Device uses IP address served from a BOOTP server.
  • Device checks for configuration (runtime) parameters.
    • If configuration (runtime) parameters exist in Flash:
      Device uses configuration (runtime) parameters. Device is operational.
    • If configuration (runtime) parameters do not exist in Flash:
      Device uses default configuration parameters and is operational.
    Note: Default parameters may not be appropriate for your system.
Note: If the Disable BOOTP/DHCP Request, Use the Stored IP Parameters is selected on the Current IP Configuration Web page and there is a static IP address stored in the adapter, no request will be sent to a BOOTP/DHCP server.
BOOTP/DHCP server fails to respond with IP address
Device looks for configured IP address saved in Flash.
  • Device uses IP address saved in Flash.
  • Device checks for configuration (runtime) parameters.
    • If configuration (runtime) parameters exist in Flash:
      Device uses configuration parameters. Device is operational.
    • If configuration (runtime) parameters do not exist in Flash:
      Device uses default configuration parameters and is operational.
    Note: Default parameters may not be appropriate for your system.
Device fails to find IP address in Flash
Device uses a default IP address derived from the device’s MAC address.
  • Device is in safe I/O mode.
    I/Os are not operational.
Device has the option to always used saved IP
The unit will not do any BOOTP/DHCP requests but will use the last TCP/IP address saved in Flash. If there is no address saved to flash, the unit will continue to obtain an address by using BOOTP requests.