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tomwalker1949Flag for United States of America

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Connecting to Mettler Toledo PS60 Scale, no COM port

We bought a used Mettler Toledo PS60 scale with a USB port, intending to connect it to the shipping manager in QuickBooks Enterprise.  I downloaded the manuals for the scale and went through the configuration process to insure the default communication settings were 9600,E,7,1.  When I connect it up to my PC, the little beep sounds that Windows has recognized a new USB device.  

The manual has a procedure to test the connection using HyperTerm, but therein lies my problem.  You have to tell HyperTerm which COM port to connect to, and the device does not seem to get assigned a COM port for me to talk to.  I have tried connecting the scale to  WinXP-Pro, WinXP-Home and Win7-Ultimate PCs with the same result.  I have tried using the AC adapter as a power source versus USB power, and it makes no difference.

Not trusting the serial port drop-down box in HyperTerm, I looked in Windows device manager, and there were no COM ports shown.

Can someone point me in the right direction to troubleshoot this?  If the scale is faulty, I should be able to get a replacement, but I was hoping perhaps somebody may have had some experience with this scale and there is something I may be overlooking.

Thanks in advance!
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Callandor
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Is there no way then to test the scale's connectivity here at my office using HyperTerm?

If not, it will be a couple of days before I can to get it over to the location where the QuickBooks server is to physically hook up the scale and test.
One of the links you provided above gave the Mettler Toledo technical support number (800-786-0812), which I called.  They showed me how to go into Windows device manager and look under the Human Interface Device section.  Looking at the properties of anything showing under there as a USB device, revealed a device whose location is shown as PS60.  That is the only way to see that the scale is properly connected and ready to go -- HyperTerm is only possible with an RS-232 connection, not USB.  

The only way to talk to the scale is with the actual shipping application software, unless someone has some VB code which will mimic 2-way communication with a USB serial device.
Thanks for getting back to me so quickly -- at least I have confirmed that the scale is behaving properly, even though I can't communicate with it until I get it connected to QuickBooks.