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How to use 1-Wire viewer with a LinkUSB or LinkUSBi

 

A LinkUSB emulates a Dallas 2480B and a Dallas 9097U.  The Dallas/Maxim 1-Wire Viewer will work with a 9097U and will also work with a LinkUSB through the built in emulation.  You don’t need to do anything special to the LinkUSB to make it work with 1-Wire® Viewer.  However, making 1-Wire® Viewer work is not straightforward with any 1-Wire® master – either Dallas or iButtonLink.

Maxim provides detailed instructions on how to make 1-Wire® Viewer work.  You can find these directions here:  http://www.maxim-ic.com/products/ibutton/software/1wire/OneWireViewer.cfm.  These directions may be updated periodically so they will not be reproduced here.

There are some typical problems and questions that are not covered completely by the Maxim documentation.  These items are addressed below:

1)      When you download the Maxim drivers and 1-Wire® viewer you must select either the 32 bit version or the 64 bit version.  This must match the version of Java that you have installed.  It is possible for a 32 bit version of Java to be installed on a 64 bit version of Windows.  If this is the case, the 1-Wire® Viewer will not load.  You have two choices:  either download the other version of the 1-Wire® Viewer or download the other version of Java.  Either will solve the issue.

2)      For a LinkUSB, choose DS9097U as the adapter type.  This will require you to put in a COM port number.  If you are unsure of the COM port for your LinkUSB, please following the following steps:

a.       Make sure the LinkUSB is plugged in and that Windows has found a driver.  The driver should load automatically as it is included in the Windows distribution.

b.      Start Windows Explorer.

c.       Right click on “My Computer” or “Computer” and choose manage.

d.      Click on Device Manager in the Computer Management application.

e.      Find the Ports entry in the Device Manager and click the arrow to expand it.

f.        Look down the list to find a “USB Serial Port” entry.  Note the COM number in parenthesis for this entry.

g.       Enter the COM number in the 1-Wire® Viewer setup screen.

3)      The 1-Wire® Viewer program will only use COM port numbers 0-15.  It is possible for you to have a COM port number greater than 15.  If this occurs, use the following steps to change the COM port number for the LinkUSB.

a.       Make sure the LinkUSB is plugged in and that Windows has found a driver.  The driver should load automatically as it is included in the Windows distribution.

b.      Start Windows Explorer.

c.       Right click on “My Computer” or “Computer” and choose manage.

d.      Click on Device Manager in the Computer Management application.

e.      Find the Ports entry in the Device Manager and click the arrow to expand it.

f.        Look down the list to find a “USB Serial Port” entry. 

g.       Right clock on the USB Serial Port entry and choose Properties.

h.      Click on Port Settings and then the Advanced… button.

i.         In the COM Port Number field at the top use the drop down to select a new COM port number equal to or less than 15 which is not marked as used.

j.        Click OK and also click OK on the Properties window.

k.       Unplug and reinsert the LinkUSB.

l.         Enter the new COM number in the 1-Wire® Viewer setup screen.

 

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