Advanced Ethernet Settings

Use the Advanced Ethernet Settings dialog box to configure advanced Ethernet settings for an RT target. Click Advanced Ethernet Settings on the Network Settings tab to access these settings.

Note  Use caution when attempting to change the Ethernet settings of an RT target. Changing the Ethernet settings of an RT target can affect the network performance of the target.

This dialog box includes the following components:

• Ethernet Devices (by MAC Address)—Lists by media access control (MAC) address all the Ethernet devices detected in the system. The first device in the list is the default device.
• Make Primary—Makes the selected device the primary device. The previous primary device is disabled. You can re-enable the previously primary device unless it is the default device. The button is disabled if the selected device is already the primary device.
• Mode—If the selected device is the primary network device, Mode is TCP/IP Network. The primary device can only be used for TCP/IP (DHCP or Static) or be disabled. For devices other than the primary device or the default device, Mode specifies how the device is used. The menu is disabled if the selected device is the primary or default device. You can reserve other network devices for application-specific purposes by selecting other modes, including Time-Triggered and EtherCAT, if supported. When you reserve a device, you set that device aside for an application that takes control of it at a later time. It is not configured or initialized at boot time like devices set for TCP/IP.
• IP Address—For devices other than the primary device or the default device, specifies the IP address for that device. The fields are disabled if the selected device is the primary device or the default device or if the Mode of the device is not TCP/IP Network. If the selected device is the primary device, the IP address is the primary IP address of the target as specified on the main Network Settings tab.
• Subnet Mask—For devices other than the primary device or the default device, specifies the subnet mask for that device. The fields are disabled if the selected device is the primary device or the default device or if the Mode of the device is not TCP/IP Network. If the selected device is the primary device, the subnet mask is the primary subnet mask of the target as specified on the main Network Settings tab.
• Preferred Media Mode—For devices whose Mode is set to TCP/IP Network (including the primary device), selects the mode the device uses to communicate on the wire. The menu is displayed only if the device's Mode is TCP/IP Network and shows only those options the device supports.

  Note  The remote target does not have to honor this setting. The actual mode used by the remote target may differ.

  
  
  You can set the following speed/duplex items:
  

  10	Sets the connection speed of the Ethernet hardware to 10 Mbps.
  100	Sets the connection speed of the Ethernet hardware to 100 Mbps.
  Gigabit	Sets the connection speed of the Ethernet hardware to 1,000 Mbps, or 1 gigabit per second (Gbps)
  Half	The RT target allows one-way communication through the Ethernet connection. The RT target can send data or receive data, but not simultaneously.
  Full	The RT target allows two-way communication through the Ethernet connection. The RT target can send and receive data simultaneously.
  	Note  Setting the duplex of RT targets from full to half can increase network performance for some targets.

• Packet Detection—For devices whose mode is set to TCP/IP Network (including the primary device), selects the method the device uses to detect incoming packets. For targets that support the Advanced Ethernet DDP command, only the actual capabilities of the driver are enabled. For targets that do not support the Advanced Ethernet DDP command, both items are enabled regardless of the actual capabilities of the driver. The menu is disabled if the device's mode is not TCP/IP Network.
  
  You can set the following mode settings for an RT target:
  

  Interrupt	The operating system of the RT target waits for an interrupt that signals the arrival of new data through the Ethernet connection. The operating system then retrieves the new data.
  Polling	he operating system of the RT target periodically checks for the arrival of new data through the Ethernet connection. If new data is available, the operating system retrieves the new data. You must set the polling interval if you select the polling mode.

• Polling Interval—For devices that are set to use polling for packet detection, specifies how often the driver should check for new packets. Permissible values range from 1 to 10000 ms. The field is disabled if the device is not set to use polling for packet detection.
• Maximum Number of Sockets—Specifies the maximum number of sockets that can be open simultaneously on the target. Some sockets are required for services such as the DDP server, the FTP server, and LabVIEW itself, so the number specified here is not the same as the number of network connections the user can make to the system. Permissible values range from 20 to 65534 sockets.
• IP Fragment Hold Time—Specifies how many seconds IP fragments are held waiting for the remaining fragments to be received to complete the packet. Permissible values range from 2 to 255 seconds.