Bidirectional converter interfaces RS-232 and RS-485 between applied between the master form between the host computer and the microcontroller or peripheral point to point, multipoint remote multi-machine communication network, multi answering machine communication, widely used in industrial automation control systems, card access control systems, parking systems, self-service banking system, bus fare collection system, canteen canteen system, employees attendance management systems, highway toll station systems, etc. .
The converter can convert RS-232 serial port TXD and RXD signal into balance half-duplex two-wire RS-485 signals. No external power supply, directly from 3 feet RS-232 port stealing, while seven feet request?RTS?Pin 4 Data Terminal Ready?DTR?Auxiliary power supply to the converter, automatic flow control so you do not have to re-set the hardware and installation is very simple.
Serial features: Interface compatible with EIA / TIA RS-232C, RS-485 standard
Electrical Interface: RS-232C terminal DB9 female connector port, RS-485 terminal DBP pin connector port with terminals?Four or six wiring
Working mode: asynchronous half-duplex
Transmission media: common wire, twisted pair or shielded cable
Transfer rate: 300-115200BPS
Transmission distance: 5 m?RS-232 terminal? 1200 meters?RS-485 terminal?
Communication tocol: Transparent
Signal: RS-232: TXD, RXD, RTS, CTS, DTR, DSR, DCD, GND
RS-485: Date +, Date-, GND
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