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Connecting to Mettler Toledo PS60 Scale, no COM port

Posted on 2012-03-13
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Last Modified: 2012-03-13
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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Question by:tomwalker1949
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Callandor earned 300 total points
ID: 37714187
From reading the technical specs on it, you don't need to set the COM port; the scale comes with both USB and an RS-232 port and you want to use the USB port.  This site (http://www.balances.com/mettler/ps60-parcel-scale.html) says it is compatible with QuickBooks ShipRush, and these are the suggestions for setting it up (from http://forums.zfirm.com/showthread.php?4244-PS60-USB-Scale-Issues):

"Try this first:
1. Start by making sure all cables are securely connected to PC and Scale.

2. Verify that there are no items on scale platter (the platter DOES need to be on the scale). The scale display should be reading 0.00 with a line over the LB sign and a line over the 0 with arrows pointing at it.

3. There are two buttons on the scale display – one with two arrows going in circle (we will call this button A) and the other button with a zero in the center and two arrows pointing at it (we will call this button B).

a. Start by holding down button A firmly for about 8-10 seconds until you see the word “SETUP” on the display – then let go of the button (“SETUP” will change on the display)
b. Tap button A until you see the word “END” appear on your screen.
c. Tap button B until you see the word “DEF 4” appear
e. Go back to button A and hold down for a moment and then let go.
f. The scale will take a few moments and re-configure itself then should return back to 0.00.

In the settings for ShipRush:
Make sure you are selecting the proper scale, which would be the USB indicated scale. Test there and then test in ShipRush. It should pull in automatically into the airbill on the screen.

SYSOPS"
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Author Comment

by:tomwalker1949
ID: 37715888
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.
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Author Comment

by:tomwalker1949
ID: 37716283
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.
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Author Closing Comment

by:tomwalker1949
ID: 37716314
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.
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