GC-ATC-820 User`s Manual

USB to RS-485 Interface Converter
User’s Manual
Wiring configuration
The GC-ATC-820 converter can be configured for RS485
The RS-485 termination of the Interface is implemented as
two-wire (Half Duplex) networks. When operating in
a DB9 plug. The pin assignments for the connector can be
two-wire RS485 the data transfer control is automatically
found in the following table as well as on a sticker applied to
done by the converter.
the unit.
The GC-ATC-820 has a 384 byte receive buffer with an
RS-485 Pinout at DB9 Male
adjustable timeout and a 128 byte transmit buffer with
auto-transmit control. The AL-820 makes it easier to add
RS485 devices to your system with easy plug-and-play.
Computer interface: USB 1.1 2.0 Plug and Play.
Operational system virtual serial port driver.
LED indication
Supports Windows 98/ME/XP/2000/CE/Vista, MAC
Red LED ----- Data Sending From USB port to RS-485
& Linux 2.4.20 or superior.
The GC-ATC-820 module is a cost-effective way to convert
Field Interfaces: RS-485 Half Duplex ,
RS485 industrial buses to a USB interface. When
Automatic flow control for RS485 Half Duplex.
connected to a PC USB port the GC-ATC-820 module is
Transmission rate: from 300 bps to 1Mbps.
automatically detected and is installed as a native COM port
MaximumRS-485 cable length : 1200 m
which is compatible with any existing serial communication
Maximum number of devices in the RS485
application. Multiple modules can be installed when using
network: Half Duplex to 32 devices
USB hubs thus allowing a hassle-free configuration of a
Power: from the USB port.
multi serial system without any IRQ or DMA configuration.
Consumption: <100 mA.
They have 600W protect between the USB port and RS485
RS-485 bus protection: 600W.
protects the PC from spikes or possible misconnections in
the communication bus.
USB connection: Mini-B connector. 100mm cable
with the module.
RS-485 connector: DB 9Male
ABS enclosure: 60 x 57 x 24 mm(not include
Operating environment: 0 to 70°C, 10 to 90%
relative humidity, non-condensing.
Serial Port side
Green LED ----Data Receiving from RS-485 Serial port side
to USB port
Wiring examples
Driver Installation
General tab, please change the Port value to USB
Follow the steps below to install driver of USB-High Speed
Serial Port (COM3).
Serial Converter:
After finishing these processes, you can use USB to
Power on your computer and make sure that the USB
Serial Bridge Cable to connect RS232 Serial 56K FAX
port is enabled and working properly.
Modem and execute the Dial-up function to connect
Plug in the USB-High Speed Serial Converter into the
Internet, and send the FAX with the FAX software(ie:
USB port and run the Add New Hardware Wizard to
Microsoft FAX) properly.
assist you in setting up the new device. Click Next to
Insert the USB-HS Serial Converter software driver into
the CD-ROM drive and click Next to continue. For
Setting Up the RS232 Serial Device
Windows 98, click Search for the best driver for your
Follow the steps below to connect your RS232 Serial
device and click to search driver from the floppy drive
Device (ie: Modem) to the USB port of your PC:
Windows will detect the driver (FTDIBUS.INF) and
shows the USB HS SERIAL CONVERTER. Click Next
to continue installation.
Click Next to continue and let Windows copy the
Uninstalling the Driver Program
needed files to your hard disk.
If you want to remove the USB-HS Serial Converter driver
When Windows finished installing the software required
program, you can uninstall it by following the steps below:
for the new USB to Serial Cable, click Finish.
Unplug the USB-HS Serial Converter from your PC.
Run the D:\Driver\Win98&win2000\FTDIUNIN.EXE
program from the software CD-ROM, Clik finish then
Turn off your Modem. Plug the DB 9 (or DB 25)
connector of the USB-HS Serial Converter into your
Modem. Connect the other end of the USB-HS Serial
Converter to an USB type A to type B cable. Turn on
the Modem afterwards.
Turn on your computer and plug in the USB connector
of the USB-HS Serial Converter into the USB port.
If you have already installed a Modem device before,
click Start, Settings, Modems. Open Modems
Properties, select the Modem, and click Properties. In
reboot the PC.
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