User`s manual

UPort 1200/1400/1600 Series User’s Manual Driver Installation
Fixed-base COM
Moxa’s UPort 1200/1400/1600 Series Utility gives users a convenient tool for configuring and
maintaining products from the UPort series. In this section, we introduce the “Fixed-base COM
Mode” function that enables user to set COM names on the host PC. We use the UPort 1250 as an
example.
Enable Fixed-base COM Mode
Moxa’s UPort 1200/1400/1600 series provides a unique fixed-base COM function that allows
users to set a specific initial COM port number. Regardless of which UPort is plugged into the host,
the COM port numbers for the UPort’s serial ports will be numbered sequentially starting with the
initial COM port number. The default setting is disabling Fixed-base COM Mode. To use
“Fixed-base COM Mode,” be sure to check the “Enable Fixed-base COM Mode” check box.
“Fixed-base COM Mode” allows users to specify which COM number will be assigned first. In
addition, COM numbers are assigned sequentially, and are not tied to specific UPort converters.
For example, assume that you have set COM10 as the first COM number that will be assigned. If
UPort D1 is plugged into your computer first, your computer will assign COM10 and COM11 to
the UPort’s serial ports. When UPort D2 is plugged in, the computer will assign COM numbers
COM12 and COM13.
UPort D1
COM10-COM11
COM12-COM13
UPort D1 Plug in first
UPort D2
2-22