Rice Lake TransAct 2.0 - Manual (Page 51)

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If you have correctly interfaced the scale with the computer, you will be able
to read the scale weight in the right side of the window. The correct weight
should also appear in the Weight box at the bottom of the window.
Click Done to return to the Set Scale Port Parameters window.
Click Pause to stop the window from scrolling.
If the test screen is blank or shows something other then the above picture,
the computers settings are not correct for the scale indicator.
7.7.3 Dual Scales
Some applications may dictate using one scale as for Weigh In and another
separate scale for Weigh Out. To initialize a second scale indicator, your PC
must have an available serial port. You can configure and use a second scale
in the TransAct Weigh form. When enabled, both scale displays appear in
the Weigh form.
After you set up the scale port, click the Test button to view data from the
scale. If you have difficulty connecting with the scale you may need to
change one or more of the settings. The following screen shows a test
display from a correctly interfaced scale.