GM-FTDI-8 User Manual
Contents
1. Gela rimo Model GM FTDI 8 USB to RS 232 Commercial Interface Converter Instruction Manual 1 Summary 3 2 Functions 3 3 Hardware Installation and Application 3 4 Performance Parameters 3 5 Connector and Signal 4 6 Communication Connection Chart 4 7 USB to RS 232 Communication 5 8 Problems and Troubleshooting 5 Summary With rapid development of computer industry USB is taking the place of various kinds of traditional low speed peripheral interfaces However RS 232 interface designs are still used in many facilities under current industrial environments therefore USB to serial converter are used by many users to implement the data transmission from a local host USB port of a computer to RS 232 equipment GM FTDI 8 is a universal USB to RS 232 interface converter with no external power supply needed Compatible with USB and RS 232 standards GM FTDI 8 is capable of performing the conversion from a single ended USB signal into UART signal of RS 232 DB9 male connectors are used for connection from RS 232 interface The unique I O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically The converter is plug and play All these features ensure a universal application on all the existing communication software and hardware interfaces The data communication rate can be as high as 300 921 6Kbps by the point to point communication by GM FTDI 8 interface2. 5 to 95 13 Supports Win98 2000 2003 2008 XP Vista 7 8 CE Mac Linux Connector and Signals 1 DB9 PIN RS 232 output signals and Pin assignment DB9 PIN RS 232C Protection Grounding DCD Receive Data SIN RXD DB9Pin Sending Data SOUT TXD PA Data Terminal Ready DTR 8 Clearsending TS gt Ring Indication RI 2 USB A type USB signal input and pin assignment VCC DATA DM DATA DP GND a Standard USB A type male connector Fine Shell Black MCU adopts the product of British FTDI company Standard DB9 male connector ee i te USB to RS 232 Communication 1 DCD 2 RXD 3 TXD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI DODODDODOD TXD RXD GND DCDTXDRXDDSRGNDDTRCTSRTS RI RS 232 Device RS 232 Device Problems and Troubleshooting 1 Data Communication Failure a oa oo f Check the USB cable connection Check the RS 232 interface connection Check the power supply PC or Device Check terminal connection Check receive indicator and see if it flashes Check send indicator and see if it flashes 2 Data missing or incorrect d Check to see whether the data rate and format at both ends of the communication equipment are consistent
3. Power indicator light and data traffic indicator light are also available with the converter for malfunction indication Conversion from USB to RS 232 is supported Functions GM FTDI 8 interface converter supports the following communication mode 1 Point to point communication mode Hardware Installation and Application Read the user manual carefully before installing the GM FTDI 8 interface converter Put the signal cable of the equipment into the USB port USB and DB9 male connectors pictured on the left are adopted for the input output interface connection for this product 1 Standards Conforming to USB V 1 1 1 0 and 2 0 and EIA RS 232 2 USB signals VCC DATA DATA GND FG 3 RS 232 signals DCD RXD TXD DTR GND DSR RTS CTS RI 4 Working mode Asynchronous mode point to point mode 5 Direction control Adoption of automatic data stream control for automatic recognition and control the data transmission direction 6 Baud rate 300 921 6Kbps automatically detection the transmission rate of the serial interface signal 7 Transmission distance 5 meters for RS 232 interface and no more than 5 meters for the USB 8 Interface protection surge protection 15KV ESD protection 9 Interface Forms USB male interface connector and DB9 male connector for RS 232 10 Transmission media twisted pair cable or shielded cable 11 Dimensions 200mm 12 Working environment 40 C to 85 C relative humidity of
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