GM-FTDI-36 User Manual
Contents
1. Gela rimo Model GM FTDI 36 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 Signals 4 6 Communication Connection Chart 4 7 USB to RS 232 Communication 5 8 Problems and Troubleshooting 5 Summary With rapid growth and development of computer industry USB technology is taking the place of various kinds of traditional low speed peripheral interfaces However RS 232 interface designs are still used in many important facilities under current industrial environments therefore the USB to RS 232 converter is used by many to implement the data transmission from the USB port of a computer to RS 232 devices GM FTDI 36 is a universal USB to RS 232 interface converter that doesn t require an external power supply Compatible with USB and RS 232 standards the GM FTDI 36 is fully 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 the2. point to point communication by GM FTDI 36 interface 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 36 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 36 interface converter Put the signal cable of the equipment into the USB ports USB DB9 male connectors are adopted for input output interface connection for this product Performance Parameters 1 2 3 4 5 Standards Conforming to USB V1 0 1 1 and 2 0 and EIA RS 232 USB signals VCC DATA DATA GND FG RS 232 signals DCD RXD TXD DTR GND DSR RTS CTS RI Working mode Asynchronous point to point Direction Control Adoption of automatic data stream control for automatic recognition and control of data transmission direction Baud rate 300 921 6Kbps automatically detecting of the transmission rate of the serial interface signal Transmission Distance 5 meters for RS 232 and less than 5 meters for USB Interface protection 15KV Electrostatic protection Interface forms B interface female connector and DB9 male connector for USB 10 Signal Indication 9 indicator lights for Power PWR Send TXD and Receive RXD 11 Transmission Media twisted pair cable or
3. shielded cable 12 Dimensions 900mm O OND 13 Working environment 40 C to 85 C relative humidity of 5 to 95 14 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 a Data Terminal Preparation OTR 6 Data Equipments Preparation DSR 8 Gearsendcts OOOO OO OOOO OSS O e Ring Indication RI 2 USB B female USB output signals and PIN assignment VCC DATA DM DATA DP GND oS 900 10mm gt Standard USB A type male connector Fine shell black MCU adopts the product of the British FTDI company Standard DB9 male connector ae oS a 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 Check to make sure USB cable is OK b Make sure RS 232 output interface connection is correct c Make sure power supply is OK d Make sure the wire terminal connection is OK e Make sure the indicator lights flash when receiving f Make sure the indicator lights flash when sending 2 Data missing or incorrect a Check to see whether the data rate and format at both ends of the communication equipment are consistent
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