Miray MR-SFM02D-S20 is a type of RS485/RS422 serial port to fiber optic Modem. Presently, many users make use of RS485/RS422 serial port fiber optic Modem to solve the electromagnetic interference in engineers and to extend the RS485/RS422 serial port transmission distance to several or even tens of kilometers. MR-SFM02D-S20 can provide users with RS485/RS422 serial port end-to-end transparent transmission. Since signals are transmitted over fibers and these optical signals are free of electrical conductivity, they have strong anti-interference capacity and are immune to high-voltage power or thunders. It is widely used in industrial control, automatic electricity system, and traffic control etc.
Applications
Industrial Automation: Seamlessly integrates serial devices with fiber-optic networks for machine control and monitoring systems.
Access Control Systems: Extend communication between devices in building security, such as card readers and security panels.
Public Transport & Tolling Systems: Ensures reliable data communication for ticketing and toll collection in remote or high-traffic locations.
Smart City Solutions: Enables robust communication for urban infrastructure systems, including traffic monitoring and environmental sensors.
Banking & Self-Service Kiosks: Provides a stable, interference-free connection for critical systems like ATMs and self-checkout machines.
Heavy Industry: Connects industrial machines, sensors, and controllers in harsh environments, ensuring high-performance communication.
Specifications
Standard
Accord RS-485, RS-422 standard
RS-485 signal
D+, D-, GND
D+: RS-485+
D-: RS-485-
GND: Ground
RS-422 signal
R+, R-, T+, T-, GND
T+: RS-422 Send +
T- : RS-422 Send -
R+ : RS-422 Received +
R-: RS-422 Received –
GND: Ground
Fiber signal
IN, OUT
Working format
Asynchronism, point to point or multi-point
Direction control
Adopt automatic send data control , auto distinguish and control data transfer direction
Band rate
0-120Kbps, auto serial band rate test
Fiber wavelength
Multi-mode 850nm, signal-mode 1310nm
Electricity port transmission
RS-485/422 port 1200M
Optic port transmission
Multi-mode 2KM, signal-mode 20, 40, 60KM Single-mode: 8.3/125, 8.7/125, 9/125, or 10/125 μm Multi-mode: 50/125, 62.5/125, or 100/140 μm
Loading
RS-485/422 port Support 32 port loop environment(or handtailor 128 point)