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Product Details:
Payment & Shipping Terms:
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High Light: | multimode media converter,fibre media converter |
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RS 422 / 485 to Optical Media Fiber to Serial Converter , 460KBPS
Interface:Supports RS-232/RS-485/RS-422 interfaces
Asynchronous transmission:point-to-point with a rate as high as 460KBPS
Working wave length:1310nm (multi-mode) and 1310nm(single-mode)
Input voltage:DC9 / 48V / 350mA
Specifications:
Interface |
Supports RS-232/RS-485/RS-422 interfaces |
Asynchronic transmission |
point-to-point with a rate as high as 460KBPS |
Transmission distance |
4,000 meters for multi-mode and 20,000 meters for single-mode |
Working temperature |
-40℃ to 80℃, relative humidity from 5% to 95% |
Working wave length |
1310nm (multi-mode) and 1310nm(single-mode) |
Electric interfaces |
RS-232: pole-shaped connector. RS-485/422: pole-shaped connector |
Fiber interface |
ST interface (SC/FC interface can be customed) |
RS-232 interface features |
Standard RS-232 three line interface +/-15KV(anti-static), ESD protection, maximum rate of 460KBPS. Input voltage DC9-48V@350mA |
RS-485/422 interface features |
Self-adaptive interface technology enables the self adaptation of rate regulation from interface, no switch needed, and the +/-15KV(antistatic) ESD protect supports as much as 32 points of polling.and 600W surge protection each line for RS-422 and RS-485 interfaces |
Connector (PIN) |
Signal |
RS-422Full-duplex |
RS-422Full-duplex |
1 |
T/R+ |
Send(A+) |
RS-485 (A+) |
2 |
T/R- |
Send(B-) |
RS-485 (B-) |
3 |
RXD+ |
RXD(A+) |
N/C |
4 |
RXD+ |
RXD(B-) |
N/C |
5 |
TXD |
RS-232(Send) |
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6 |
RXD |
RS-232(RXD) |
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7 |
GND |
RS-232(GND) |
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8 |
VCC |
Power input (DC9-48V) |
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9 |
GND |
GND |
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10 |
ETH |
ETH |
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Description:
Being a multi-function fiber modem in support of asynchronism RS-232,RS-485 and RS-422 communication interface, UT-277 is the best choice for the connection from remote terminal unit (RTU) to host(HOST) or Supervisory Control and Data Acquisition (SCADA) . It supports multiple asynchronism communication protocols including RS-232,RS-485 and RS-422, and it also supports a combination of two of the RS-232,RS-485 or RS-422 interfaces as well as both of the working modes, i.e. Two-line(half-duplex) RS-485 and four-line(full duplex) RS-422.The ability to support RS-485 mode for data TXD or SD sending control greatly improves its compatibility with various kinds of software besides a sharp simplification of control method. Various kinds of fiber connection between asynchronism serial interfaces are supported by UT-277 fiber modem. Both half duplex and full duplex communications through fiber between two asynchronism interface devices are supported with a communication distance as far as 4 kilometers for multi-mode and 20 kilometers for single-mode. The transmission rate for RS-232 can reach a maximum of 115.2KBPS,while for RS-485/RS-422 a maximum of 460KBPS can be achieved.Interfaces of different electric standards can be mixed for use with nice EMI/RFT performance,e.g. RS-232 devices can be connected to RS-485/RS-422 devices,and the interface converter or photoelectric isolator can be replaced from RS-232 to RS-485.Two data signal transmissions are supported by UT-277: data sending and data receiving. At the same time, automatic control circuit is also provided for RS-485/RS-422 data transmission. Zero delay for converting time is achieved. ST interfaces are used for fiber connection.
Two separate optical sender and receiver are used by UT-277 with a wave length of 1310nm (multi-mode) and 1310nm(single-mode) and both with standard ST interface. Multi-mode fiber cable of almost all sizes can be used,including 50/125um,100/140um and 200um. Single-mode :9/125umUnder point-to-point mode,two fibers are to be used for two fiber modems and the directions of the data transmission are opposite.
Contact Person: Mr. Brandy Xie
Tel: +86-755-27886063 Ext.602
Fax: 86-755-27886083