Moxa Technologies UPORT 1110 User Manual

UPort 1100 Series Introduction
1-6
Adjustable Pull High/low, Terminator Resistors for the
RS-485 Port
In some critical environments, you may need to add termination resistors to prevent the reflection of serial
signals. When using termination resistors, it is important to set the pull high/low resistors correctly so that the
electrical signal is not corrupted. The UPort uses DIP switches to set the pull high/low resistor values for each
serial port.
To set the pull high/low resistors to 150 KΩ, make sure both of the assigned DIP switches are in the OFF
position.
To set the pull high/low resistors to 1 KΩ, make sure both of the assigned DIP switches are in the ON
position. This is the default setting.
SW
1 2 3
Pull High Pull Low Terminator
ON 1KΩ 1KΩ 120 Ω
OFF
150 KΩ
150 KΩ
Disable

Moxa Technologies UPORT 1110 Specifications

General

Display	-
Baud rate	921.6 Kbit/s
RS-232 signals	Rx, Tx
Serial interface type	RS-232
Serial ports quantity	1
Electrostatic Discharge (ESD) protection	15 kV
Product color	Blue, Grey
Operating temperature (T-T)	0 - 55 °C
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
LED indicators	USB
Linux operating systems supported	Yes
Windows operating systems supported	Windows 2000, Windows 2000 Professional, Windows 98, Windows 98SE, Windows ME, Windows Vista Business, Windows Vista Business x64, Windows Vista Enterprise, Windows Vista Enterprise x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64