RS485, also known as RS485 standard interface, is an industrial specification. It allows long-distance wiring and supports multi-point communication. Generally speaking, the transmission distance of RS485 signals is several hundred meters, which can meet the needs of most users. However, in the face of some ultra-long-distance data transmission needs, it needs to extend the serial RS485 communication distance.
How to extend serial RS485 communication distance?
Method1: Extend serial RS485 transmission Via Fiber
By converting the RS485 interface into optical signals through optical fiber and baudcom console server converter, the transmission distance of RS485 can be extended up to 80 kilometers.
Such as Serial Port RS485 Fiber Converter.
Method2: Extend serial RS485 Via Ethernet
Extending RS485 to Ethernet through Ethernet converters or serial interface converters. The RS485 serial signal is converted into ethernet data, then transmission in ethernet network.
Such as 2Channel RS485 Serial to Ethernet converter.
Method3: Extend serial RS485 Communication Distance Via Wi-Fi
Extending RS485 to wireless networks through serial WIFI converter or wireless device servers.
Method4: Extend serial RS485 Distance Via Hub
Through a hub, multiple RS485 branches can be aggregated onto one main trunk line, which enables maintaining the original communication rate.
Method5: Extend serial RS485 Communication Via Serial Interface Repeater
A serial interface repeater can be used to connect two RS485 buses. It can reduce the length of each transmission line, thus increasing the transmission distance and transmission rate of RS485.
Method6: Extend serial RS485 Via Modem
Cellular modems can satisfy the need for widely distributed RS485 connected devices in complex topographies.
Method7: Extend serial RS485 Via Radio Channel
The communication distance of RS485 can also be extended by radio channel.
Conclusion
RS485 offers a longer transmission distance than RS232, but as technology continues to evolve, so do the demands of users. The original serial RS485 communication distance may no longer meet user requirements, and there is often a need to extend the RS485 distance.
