CoolGear USBG-422MiNi User manual

Mini USB to Terminal
RS422 RS485 FTDI Plug-in
Adapter
Product Manual
Coolgear, Inc.
Version 1.1
April 2018
Model Number: USBG-422MiNi
www.coolgear.com

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Revision History
Revision Date Author Comments
1.1 04/05/2018 Coolgear New Manual
About this document
This product manual outlines installation and features of the USBG-422MiNi Mini USB to
Terminal RS422 RS485 FTDI Plug-in Adapter.
Scope
The scope of this manual is to give the user of the product an understanding of its use
with detailed diagrams and verbiage. The manual allows the users to apply the product
to their application.
Intended Audience
This product is intended for use in numerous industries including but not limited to
applications such as; Factory automation equipment, multi-drop data collection devices,
barcode readers, time clocks, scales, data entry terminals, PC-to-PC long distance
communications and serial communication.
Product Support
[email protected]

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Table of Contents
1. Introduction.........................................................................................................4
1.1 Features .................................................................................................................. 4
2. Driver Installation ................................................................................................5
2.1 Install in Windows 8, 7, Server 2012, 2008 Rs........................................................ 5
2.2 Install in Windows XP, Vista, Server 2003 and 2008 .............................................. 5
2.3 Pin-outs of the Terminal Block Connector.............................................................. 5
3. RS422 / RS485 Pin-outs ........................................................................................6
4. Signal Wiring........................................................................................................7
5. Notes, Tips, and Warnings ....................................................................................9
6. Supporting References .......................................................................................10
Table of Figures
Figure 1 – Pin-outs of the Terminal Block Connector.……………………………………………….…..5
Figure 2 – 4 Wire Cabling Scheme….……………………………………………………….…..………….….…7
Figure 3 – 2 Wire Cabling Scheme………………………………………………….……..……………..………..7

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1. Introduction
This mini is a surge and static protected USB to RS-422/485 Plug-in Adapter. The USBG-
422MiNi USB-to-Industrial Single RS-422/485 Plug-in Adapter is designed to provides
instant connectivity to RS-422/485 communication device for factory automation
equipment, multi-drop data collection devices, barcode readers, time clocks, scales,
data entry terminals, PC-to-PC long distance communications and serial communication
in harsh environments.
WEIGHT .043 lbs
DIMENSIONS 1.91(L) x 1.55(W) x .736in(H)
CABLE LENGTH 3ft.
UPC 736983901668
WARRANTY 1 year from date of purchase
COLOR Blue
PORTS (1) 6-wire terminal connector
1.1 Features
•TAA Compliant
•Supported by Windows 10.
•Adds a high speed RS-422 / 485 serial
port.
•256 bytes receive buffer for high speed
data throughput.
•128 bytes transmit buffer for high
speed data throughput.
•Requires no IRQ, DMA, I/O port.
•Data rates: 300 bps to 1M bps.
•Connector: one 6-pin terminal block
connector.
•Auto transmit buffer control for 2-wire
RS-485 half-duplex operation.
•Wide ambient temperature operation
0°C to 60°C (32°F to 140°F).
•
Monitor LEDs of TxD, RxD indicating
port status.
•Easy operating mode configuration and
setting.
•Provides 15KV ESD protection and
600W surge protection for all serial
signals.
•FTDI virtual COM port drivers provided
for Windows 10, 8, 7, Vista, Server
2012, 2008, 2003, XP, 2000
•Linux kernel 2.4 and up built-in
support.
•No driver installation required.
•CE, FCC approval Works with USB 1.1 &
2.0 host port.

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2. Driver Installation
In most cases, the driver of USB-COMi-PL will be installed automatically.
2.1 Install in Windows 8, 7, Server 2012, 2008 Rs
Connect your computer to the Internet and plug the USB-COMi-PL to the USB port. The
driver will be installed automatically via the Internet.
2.2 Install in Windows XP, Vista, Server 2003 and 2008
Connect your computer to Internet and plug USB-COMi-PL to the USB port, when asked
to install the drivers, allow your computer to search the Internet to load and install the
drivers automatically.
2.3 Pin-outs of the Terminal Block Connector
Figure 1
Terminal block connector pin numbers

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3. RS422 / RS485 Pin-outs
RS-422/485 Full Duplex Mode Pin-out
The table below shows the RS-422 / 485 full duplex mode pin-out of the terminal block
connector.
Pin Number Pin Type Description
1 Output TxD-Transmit Data, negative polarity
2 Output TxD+ Transmit Data, positive polarity
3 Input RxD+ Receive Data, positive polarity
4 Input RxD-Receive Data, negative polarity
5 Power VCC DC +5V
6 Ground GND Signal Ground
RS-485 Half Duplex Mode Pin-out
The table below shows the RS-485 half duplex mode pin-out of the DB-9 Male
connector.
Pin Number Pin Type Description
1 Out / In Data-Transmit / Receive Data, negative polarity
2 Out / In Data+ Transmit / Receive Data, positive polarity
5 Power VCC DC +5V
6 Ground GND Signal Ground
RS-485 half duplex pin-out for terminal block connector.

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4. Signal Wiring
The RS-422/485 signal requires dedicated wire pairs for transmit and receive. The
transmit wires are used to send data to as many as 10 receivers, as stated in the
specifications of RS-422. Since the USBG-422MiNi uses RS-485 line driver technology, up
to 32 receivers are possible. The following diagram shows RS-422 and RS-485 4-wire
scheme: Settings are listed as follows:
Figure 2
RS-485 2-Wire Scheme
The following diagram shows RS-485 2-Wire scheme:
Figure 3

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The RS-485 operation of USBG-422MiNi allows for 2-wire cabling. Several RS-485 2-wire
devices are connected in parallel to the wires, which is call bus topology. Each device
can either send or receive data at a given time, so it is operating in half-duplex mode.

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5. Notes, Tips, and Warnings
Note N/A
Tip N/A
Warning N/A
Safety
•Read the entire Product Manual before implementing this product for
your application. This manual contains important information about
electrical connections that must be followed for safe and proper
operation.
•Inspect the product closely for visual defects before putting it to use.
•Keep away from areas where moisture builds, this product contains
electrical components that can be damaged by moisture build up, this
can adversely affect your equipment connected to it.
•Do not disassemble the product. Handling the product’s internal
components can expose it to ESD (Electro-Static Discharge) hazards
that can affect the function of the device.
•If this product is not functioning properly, email our support team at
[e-mail].

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6. Supporting References
Document Link
Website Product Page https://www.coolgear.com/product/mini-usb-to-terminal-
rs422-rs485-ftdi-plug-in-adapter
© 2017 Coolgear, Inc. All Rights Reserved. All products and accompanying digital documentation including images are the property
and / or trademarks of Coolgear Inc. Coolgear Inc. are continuously improving upon its products. Product specifications are subject
to change without notice.