TCP/IP Properties: The General Page

The General Page

Use the General page of the TCP/IP properties window to configure the IP address of the EtherNet/IP communication module.

Open the TCP/IP properties window by clicking on the TCP/IP

icon in the Devices window.

NOTE: Refer to the topic Configuring Properties in the Devices Window for information on how to display property descriptions and edit property values.

Selecting a Configuration Mode

Use the Configuration list to specify a configuration mode. The configuration mode setting determines how the module obtains its IP address at startup. Choices are:

Configuration Mode	Description
Static	The module uses the module IP address, gateway IP address, and sub-network mask configured in this page.
Flash Memory	The module uses the IP address configured via the TCP/IP object and stored flash memory. An IP address configured by this process survives a warm re-start (during which power to the device is continuously maintained), but is lost in the case of a cold re-start (where power to the device is turned off for a time).
BOOTP	The module uses an IP address assigned by a BOOTP server.

Setting the Module Addresses in Static Mode

Three IP address properties need to be configured for the EtherNet/IP communication module in static configuration mode:

Property	Description
Module IP Address	The 32-bit identifier—consisting of both a network address and a host address—assigned to a device connected to a TCP/IP Internet network using the Internet Protocol (IP).
Gateway Address	The address of a device, if any, that serves as a gateway to the EtherNet/IP module.
Sub-Net Mask	The 32-bit value used to hide (or mask) the network portion of the IP address and thereby reveal the host address of a device on a network using the IP protocol.

Default Address Configurations

The module uses a default address configuration when it is not configured or when a duplicate IP address is detected. The default address is based on the MAC address of the module and makes it possible for several Schneider devices to use their default network configuration on the same network.

The module uses the following default address configurations.

Default IP Address

This default address starts with 10.10 and uses the last two bytes of the MAC address. As an example, a device with the MAC address of 00:00:54:10:8A:05 has a default IP address of 10.10.138.5 (0x8A=138, 0x05=5).
Default Subnet Mask

The default address is 255.0.0.0 (a class A mask).
Default Gateway Address

The default gateway address is identical to the default IP address.

Duplicate IP Address Checking

Before going online, the module sends out at least four ARP (Address Resolution Protocol) messages with a proposed IP address.

If an answer is returned
- There is a device already using the IP address.
- The module will not use the proposed IP address and uses the default IP address.
If an answer is not returned
- The module uses the IP address (along with the associated network parameters.)