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Ethernet Configuration for More Than One GPIB ENET/100 Devices under Windows

Hardware: Instrument Connectivity Other>>Ethernet>>GPIB-ENET/100

Problem:
I have more than one GPIB ENET/100 device and I need to connect to one PC Host with Windows. What do I need to do?

Solution:
In order to be able to connect more than one GPIB-ENET/100 device to your PC host you should guarantee an unique IP address for each GPIB-ENET/100 device and for every ENET port. You can set network configuration through DHCP or, in same cases, you should set a static IP address.
You can choose among two different type of connections:

Connect each GPIB-ENET/100 and your PC Host to a HUB:
By this way, you can connect and configure your GPIB-ENET/100 devices in a simple way.

  1. Connect every GPIB-ENET/100 to the HUB ports.
  2. Connect the HUB out port to the PC ENET port;
  3. Switch on the GPIB-ENET/100 modules;
  4. Configure each module by following the instructions of the Add GPIB-ENET/100 wizard, as described in the KnowledgeBase 3E3ALM4B.

Connect each GPIB-ENET/100 to a single PCI ENET on your PC Host:
You need to set an uniqe static IP address for every TCP/IP port:

  1. Select Start»Control Panel and open Network Connections;
  2. Right click on the Local Area Connection and set properties;
  3. Double click on Internet Protocol (TCP/IP) to open its properties;
  4. Under General tab, check Use the following IP address;
  5. Set a static IP address.

The first three bits of the most significant octet of an IP address came to imply the "class" of the address. Every TCP/IP port should has a different class. For instance, for ENET port A and ENET port B you can set IP AAA.xxx.xxx.xxx and IP BBB.xxx.xxx.xxx
it is now possible to connect and set your GPIB-ENET/100 device:

  1. Connect every GPIB-ENET/100 to the ENET ports through a crossed cable;
  2. Switch on the GPIB-ENET/100 modules;
  3. Configure each module by following the instructions of the Add GPIB-ENET/100 wizard or use the NI Ethernet Device Configuration utility;
  4. Set a static IP address.

Every GPIB-ENET/100 should has the same IP class of the ENET port to which is connected. For instance, for GPIB-ENET/100 A connected to ENET port A you can set IP AAA.xxx.xxx.yyy

NOTE: NI Ethernet Device Configuration is an utility that allows you to detect each NI device connected to the network of your PC host. You can open it on Measurement and Automation Explorer by selecting Tools»NI Serial»NI Ethernet Device Configuration. Select the device of interest and right click on the  Properties.. button to open a window on which verify and eventually change the network settings of your device.



Related Links:
NI GPIB-ENET/100
KnowledgeBase 3E3ALM4B: Setting Up the GPIB-ENET/100
KnowledgeBase 25MDIKEC: Updating the GPIB-ENET/100 with the Latest Firmware
KnowledgeBase 2D58DU6E: How Do I Manually Reset the IP Address of My GPIB-ENET/100?
KnowledgeBase 37NDF1GP: How Do I Set Up the Ethernet Configuration for a GPIB ENET/100 Device?
KnowledgeBase 23E7KUR4: Which Operating Systems Are Supported by the GPIB-ENET/100?
Distributed GPIB-ENET/100 Sample 2

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Report Date: 09/18/2008
Last Updated: 10/02/2008
Document ID: 4PH9OK46

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