UPort 2000 Series
Driver Installation
2-17
If both UPorts are unplugged from the computer, and then UPort D2 is plugged back in, the computer will now
assign COM10 and COM11 to the UPort’s serial ports. When UPort D1 is plugged back in, COM numbers COM12
and COM13 will be assigned the UPort’s serial ports.
When “Fixed-base COM Mode” is enabled for the first time, all COM port numbers and serial port parameters
will be reset to their default values. You can then set the COM numbers and configuration parameters to the
values needed for your application.
For example, let’s assume that before you enable “Fixed-base COM Mode” you set the parameters of the UPort
2000 as follows:
Port Number: COM5
Friendly Name: POS Device 1
Fast Flush: Disable.
If you now enable “Fixed-base COM Mode,” all parameters will be reset to their default values:
Port Number: COM3
Friendly Name: MOXA UPort COM
Fast Flush: Enable
At this point you can set the COM numbers and other serial parameters to the values needed for your
application. If you subsequently disable “Fixed-base COM Mode,” all parameters will be restored to the original
settings:
Port Number: COM5
Friendly Name: POS Device 1
Fast Flush: Disable
In “Fixed-base COM Mode,” you can reset the COM numbers and configuration parameters of individual ports
to the values needed for your application at any time.
(D1)
(D2)
COM12-COM13
COM10-COM11
2
1
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