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Help CenterUT-2578SM, Fiber to Serial Converter, RS-232 / RS-485 / RS-422, Multi-mode / Single-mode
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Certification:CE,FCC,ROHS
UT-2578SM, Fiber to Serial Converter, RS-232 / RS-485 / RS-422, Multi-mode / Single-mode
Applications:
|
Interface |
Support 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. 40,000 meters can be customized |
|
Working temperature |
-40℃ to +85℃, 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 |
SC interface (other interface can be ordered ST/FC) |
|
RS-232 interface features |
Standard RS-232 three line interface ±15KV(anti-static), ESD protection, maximum rate of 115.2Kbps. Input voltage DC9-48V@200mA |
|
RS-485/422 interface features |
Self-adaptive interface technology enables the self adaptation of rate regulation from interface, no switch needed, and the ±15KV(anti-static) ESD protect supports as much as 32 points of polling. And 600W surge protection each line for RS-422 and RS-485 interfaces. |
Connector and signal
|
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) |
|
|
6 |
RXD |
RS-232(RXD) |
|
|
7 |
GND |
RS-232(GND) |
|
|
8 |
VCC |
Power input (DC9-48V) |
|
|
9 |
GND |
GND |
|
|
10 |
ETH |
ETH |
Being a multi-function fiber modem in support of asynchronism RS-232,RS-485 and RS-422 communication interface, UT-2578 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-2578 fiber modem. Both half duplex and full duplex
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