Bộ Chuyển Đổi USB Ra 4 Cổng RS-485/422 UT-861

Giới thiệu

UT-861 is a universal USB/RS-485/422 converter which doesn’t need external power supply and has built-in opto-isolator and DC/DC power isolation module. It is compatible with USB ,RS-422 and RS-485 standards, and it can convert single-end USB signal to balanced differential RS-422 or 485 signal. The built-in photoelectric isolator can provide isolating voltage up to 2500Vrms and it equips with high-speed transient voltage supressor which is designed to protect the RS-422/RS-485 interface. The advanced TVS (TRANSIENT VOLTAGE SUPPRESSOR) presents high-impedance state under normal conditions, and it can rapidly decrease the resistance between its two ends while it’s withstanding transient high-power impulse so as to absorb the high current and clamp the voltage across it to a preset value, and then the following components will not be damaged by the transient high-voltage impulse.

This suppressor can effectively restrain lightning and ESD (electro-static discharge) with lightning surge protection power of 600W for each line, and it also can restrain surge voltage and transient over-voltage on the lines for any reason. Extremely small interelectrode capacitance ensures high speed data transmission of RS-422/RS-485 interface.The RS-422/RS-485 end is connected through male DB9 connector.It has built-in automatic transmit-receive switch without time delay. The unique I/O circuit can be used to automatically control the direction of data flow without any hand-shaking signals(such as RTS and DTR) and full-duplex(RS-422) and half-duplex (RS-485) can be implemented without jumper configuration,so as to make it plug-and-play and applicable to all existing communication software and interface hardware.

1.   USB 2.O,compliable rming to USB1.1, 1.0 and EIA RS-485 and RS-422 standard
2.   USB signals: VCC, DATA+, DATA-, GND, FG
3.   RS-485 signals:T/R+, T/R-, GND
4.   RS-422 signals:  T/R+, T/R-, RXD+, RXD-, GND
5.   Operating mode: Asynchronous, P2P or point-to-multipoint mode, 2-wire half-duplex, 4-wire full-duplex
6.   Automatic data flow control:automatically adapt and control data flow
7.   Baud rate: 300-128000bps, automatically detecting the data rate
8.   Load capacity: point-to-multipoint mode, Max.=128 RS-422/485 devices are supported
9.   Communication distance:5 KM for RS-485/422 (128000-9600bps) and <5 m for USB
10.   Interface protection: 600W lightning strike and surge protection for each port, ±15KV ESD portection
11.   Isolation degree: 2500Vrms isolation voltage for each port, 500DC contineous specialized DC/DC module
12.   Isolation type: master/slave ,slave/slave
13.   Interface connection: B type female at USB side and DB9 male at RS-485/422 side
14.   Signal indication: 9 signal indicator lights,Power(PWR) transmit (TXD)  receive (RXD)
15.   Transmission medium: STP or UTP
16.   Baudrate: 128000bps to 300M
17.                       38400bps to 2.4KM
18.                       9600bps to 5KM
19.  Dimension: 210mm×130mm×32mm
20.  Environmental parameters: temperature of -25°C to 70°C, relative humidity of 5% to 95%
21.  Supported Win98/Win2000/WinXP/Win7/Linux

Download Datasheet: UT-861

Download Hướng dẫn: UT-861

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