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Chapter 1 Introduction
The UPort 1100 Series of USB-to-serial converters provide an easy way to add COM ports to your
computer. The UPort 1110 provides one RS-232 port, the UPort 1130 provides one
RS-422/RS-485 port, and the UPort 1150 and UPort 1150I each provide one RS-232/422/485 port.
As a plug and play USB device, the converters are perfect for mobile, instrumentation, and
point-of sale applications.
The UPort 1100 series include the following models:
UPort 1110: 1-port RS-232 USB-to-serial converter.
UPort 1130: 1-port RS-422/485 USB-to-serial converter.
UPort 1150: 1-port RS-232/422/485 USB-to-serial converter.
UPort 1150I: 1-port RS-232/422/485 USB-to-serial converter w/ isolation protection.
The following topics are covered in this chapter:
Overview
¾ ADDC™ (Automatic Data Direction Control) for RS-485
¾ ARDC (Automatic Recovery Data Communication)
Package Checklist
Product Features
Product Specifications
LED Indicators
¾ Adjustable Pull High/low, Terminator Resistors for the RS-485 Port