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Archived: ENET/100: Why Does the GPIB Hardware Wizard Fail While Sequentially Verifying Interfaces?

This document has been archived and is no longer updated by National Instruments



Hardware: GPIB>>External Controllers/Convertors>>GPIB-ENET/100

Problem:
I have connected my ENET/100 by cross-over cable to my computer. When I run the GPIB Hardware Wizard, it tells me that the GPIB Sequential Interface has failed.

Solution:
This error usually indicates that your ENET/100 is not configured correctly. You must assign it a legal IP address and Subnet mask. To know what IP address and Subnet mask to assign it, check what IP Address your computer has. This can be done using the ‘ipconfig’ command from a command prompt window. For Windows 2000/XP, you can open a command prompt window by going to Start»Run... and typing CMD in the run window, and click OK.

When the command prompt window comes up, type in ‘ipconfig’ and press enter. This will give you the IP address and Subnet mask of your computer. Write them down for later reference.

Set your ENET/100 device to configuration mode by holding the CFG RESET switch for 3 seconds (The Configuration Reset (CFG RESET) switch is a recessed switch located beside the ENET connector on the rear panel). The PWR/RDY LED alternates rapidly between red and yellow to indicate the GPIB-ENET/100 is in network configuration mode.

In MAX, your device will appear under ‘Devices and Interfaces’. By right-clicking your device, you will be able to select the ‘Device Configuration’ option.

Select your device in the NI Ethernet Device Configuration window and click the properties button to change the configuration settings.

In the properties window, enter an IP address that is similar but not the same as your computer’s IP address by changing only the last digit (i.e.: if your computer’s IP address is 130.164.54.227, set your device as 130.164.54.100). Note: TCP/IP address ranges and subnet masks may not always work when configured this way by changing the last octet of your IP address and assigning that IP address to your ENET/100 device. This example assumes that you are using a subnet mask of 255.255.255.0 on both your PC and your ENET/100 and that no other devices on the network will conflict with your newly chosen IP address. Please see documentation on TCP/IP subnetting or contact your network administrator for more information.

Enter the exact same subnet mask as your computer has.

Once you click OK, your device should reboot and show a green solid light. Your device should be working correctly now and you will be able to scan for attached instruments under MAX.

If the device still fails the Sequential Interface test, double-check to make sure that you can ping the ENET/100 device from the command prompt of the host machine. Then delete the ENET/100 device in MAX and go through the steps to reconfigure your ENET/100 device again. Your device should be recognized with its ping-able IP address. Now try scanning for attached instruments in MAX.

Related Links:
KnowledgeBase 37NDF1GP: How Do I Setup the Ethernet Configuration for a GPIB ENET/100 Device?
KnowledgeBase 2OCAJQBS: GPIB-ENET/100 Direct Connection to a Host Computer Without Using a Network
Product Reference Manual: Getting Started with Your GPIB-ENET/100 and NI-488.2 for Windows 2000/NT

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Report Date: 10/06/2004
Last Updated: 11/11/2005
Document ID: 3E5H8OMQ

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