GC-ATC-820 USB to RS-485 Interface Converter User’s Manual Features 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 PIN# RS-485 1 4852 485+ 5 GND 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 Introduction & 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 cable) • 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). 4. Serial Converter: 1. 2. 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 continue. 3. 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: D:\DRIVER\Win98&Win2000. 4. Windows will detect the driver (FTDIBUS.INF) and shows the USB HS SERIAL CONVERTER. Click Next to continue installation. 5. 6. 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. 1. Unplug the USB-HS Serial Converter from your PC. 2. Run the D:\Driver\Win98&win2000\FTDIUNIN.EXE program from the software CD-ROM, Clik finish then 1. 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. 2. Turn on your computer and plug in the USB connector of the USB-HS Serial Converter into the USB port. 3. 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.