RS485 serial port wiring description of smart lamp post smart gateway

Smart street lamp pole can carry equipment with different functions , Realization “ One shot is multi-purpose ” The efficiency of . At present, the equipment application support of intelligent street lamp pole includes intelligent lighting 、 Video surveillance 、 The environmental monitoring 、 Broadcast sound column 、 And other functional equipment and monitoring equipment . Some of these devices use RS485 communication interface ,BMG8200 The smart road lamp post gateway is specially designed with two 485 Interface , At the same time, the two interfaces are also aviation waterproof joints , And support 12V Power output .

The core equipment of the intelligent road lamp pole is the intelligent gateway , Different devices are connected to the smart road lamp post gateway , To facilitate centralized management 、 Monitoring and control . therefore , The gateway needs to be designed with communication interfaces and power supply interfaces that meet the docking of different devices .

Let's take a look at two RS-485 Definition of interface , some RS-485 The design has 4 A connection port , and 485 Normally, there are two wires A and B.

gateway RS-485 Serial port definition ：

existing RS-485 Interface definitions can be wired basically , But with waterproof wire and output voltage , Therefore, the wire rod can also distinguish multiple wires , At this time, it is necessary to define the configuration of waterproof wire .

gateway RS-485 Port wiring definition ：

Pin 1------ Yellow and green lines -----RS485A 

Pin 2------ Brown （ red ） Color line ----- Power Supply + 

Pin 3------ Black line ----- Power Supply - 

Pin 4------ blue （ green ） Color line -----RS485B