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Doc No: PH485Ux2i-Dual-UM-001
8 July 2015
USER’S MANUAL
PH485Ux2i-Dual
USB to #2 Port RS-485/RS-422 Bi-Directional Converter
IPEX
(IP Electronix)
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IPEX (IP Electronix) PH485Ux2i-Dual: User’s Manual
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Contents
1. INTRODUCTION .................................................................................................................................... 4
2. SPECIFICATIONS ................................................................................................................................... 4
3. PACKAGE CHECKLIST ............................................................................................................................. 5
4. DEVICE VIEWS ...................................................................................................................................... 6
5. INSTALLATION ON WINDOWS XP .......................................................................................................... 7
6. INSTALLATION IN WINDOWS 7 ........................................................................................................... 14
7. CHANGING COM PORT NUMBER ......................................................................................................... 20
8. HOW TO FIND DEVICE PORTS COM NUMBER ...................................................................................... 23
9. RS-485 CONNECTING METHODS .......................................................................................................... 24
10. RS-422 CONNECTING METHODS ..................................................................................................... 25
11. GUARANTEE ................................................................................................................................... 26
12. TECHNICAL SUPPORT ...................................................................................................................... 26
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1. Introduction
IPEX PH485Ux2i-Dual™ is a USB to RS-485 and RS-422 Converter that adds a two Windows Serial COM Ports via
its USB connection and is compatible with RS-485 standard devices differential (Data+ & Data-); and RS-422
standard devices differential (TX+,TX- & RX+,RX-) signals. PH485Ux2i-Dual™ is fully Plug & Play and no external
power supply is required as PH485Ux2i-Dual™ takes its power from the USB Bus. It is designed for industrial
usage and is useful for Industrial Automation, Telecommunications, SCADA Systems and DCS Systems …
Protection against Surge, ESD and EMI is considered in its design and also has 3kV isolation between USB and
RS-485/422 sides. Since RS-485 is a Half-Duplex standard, switching between Transmit and Receive is doing
automatically and no further signal (such as RTS) is required. PH485Ux2i-Dual™ supports Point-to-Point and
Point-to-Multi Point Party Line network topologies.
PH485Ux2i-Dual™ comes complete with drivers for Microsoft Windows XP/CE/2003/2008/7/8. Drivers are also
available for Linux, Mac OS and Android.
2. Specifications
USB to RS-485 and RS-422 Bidirectional Converter
Hi-speed USB 2.0 supported (up to 480 Mbps)
Add two COM Port to your PC
Fully Plug & Play
RS-485 Signal: Data+, Data-, GND
RS-422 Signal: TX+, TX-, RX+, RX-, GND
Maximum Communication Distance: 1200m (4000 feet)
Loading: RS-485 and RS-422 Side Support up to 32 Nodes
Bus Powered (No External Power Supply Required)
Serial Transmission Speed Up to 230.4 kbps
Driver Supported: Microsoft Windows XP/CE/2003/2008/7/8, Linux, Mac OS and Android (32 & 64 Bits)
Operating Systems
Isolation Protection: 3kV Instantaneous, 500V DC continuous
Power (Green) LED Indicator
Transmit (Blue) and Receive (Yellow) LED Indicator
1 Year Guarantee and 5 Years Support
Operating Temperature: -40°C to +85°C (-40°F to +185°F)
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3. Package Checklist
Before installing the PH485Ux2i-Dual, verify that the package contains the following items:
1) PH485Ux2i-Dual 2) USB Cable
3) Guarantee Card 4) #2 7Pin Screwed Terminal
5) Installation CD-ROM
NOTE: Notify your sales representative if any of the above items is missing or damaged.
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4. Device Views
Top View
Front View
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5. Installation on Windows XP
After you plug PH485Ux2i-Dual to USB port, you can see a new device in the Device Manager window as below:
(To run Device Manager, right click on My Computer, select Properties and then select Hardware tab, finally
click on Device Manager button like following picture or simply use "WIN-KEY + R" and then type DEVMGMT and
press Enter)
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However, installation progress will be start automatically, and following window will be seen,
Select option "No, not this time" and then click "Next",
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Select "Install from a list or specific location (Advanced)" and click "Next",
Select "Include this location in the search:" and click on "Browse",
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Select "Driver Folder" on the Installation CD and click OK.
Now, click on "Next",
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The driver will be installed,
Now, click "Finish",
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After finishing installation, you should see a new "USB Serial Port" in "Ports (COM&LPT)" section of Device
Manager.
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6. Installation in Windows 7
Installation in Windows 7, is same as Windows XP, in case that installation progress do not be start
automatically, you can install driver manually as follow:
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7. Changing COM Port Number
To change COM Port Number, right click on the USB COM Port on Device Manager and select properties,
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Select port setting:
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And then click on "advanced…",
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Now, you can choose a number from COM Port Number section and finally click ok.
8. How to Find Device Ports COM Number
To find which COM Port belongs to PH485Ux2i-Dual, you can use a terminal utility like "HYPER TERMINAL".
Select a COM port and transmit some characters, now you can find port by watching TX LED (Blue LED) on the
device.
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9. RS-485 Connecting Methods
9.1) RS-485: Point to Point Connection
9.2) RS-485: Multipoint Network
NOTICE 1: Normally, D+ connects to D+, and D- connects to D-; but in some devices, D+ and D- signals are vice
versa, so you should connect D+ to D- and D- to D+ in these cases.
NOTICE 2: In noisy environments, it is better to use GND signal too.
RS-485 Cable: The best cable type for RS-485 side is shielded twisted pair. CAT5 or CAT6 cables are good
choices. Maximum cable length could be 1200m. Connect D+ and D- pins to one pair and GND signal to shield.
Terminator Resistor: A 120 ohm terminator resistor is installed internally and further external terminator
resistor is NOT REQUIRED.
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10. RS-422 Connecting methods
According to the signal labels on the device, the RS-422 signals are: TX-, TX-, RX+ and RX- that their connections
are as below:
10.1) 00BRS-422: Point to Point
10.2) 00BRS-422: Multi Drop Network
RS-422 Cable: The best cable type for RS-422 side is shielded twisted pair. Maximum cable length could be
1200m.
Terminator Resistor: A 120 ohm terminator resistor is installed internally and further external terminator
resistor is NOT REQUIRED.
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11. Guarantee
All products manufactured by IPEX are under warranty regarding defective materials for a period of one year
from the date of delivery to the original purchaser.
12. Technical Support
If you have any technical question or need any technical support, please contact us using this Email address:
support@ipelectronix.com
.
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