Functional characteristics:
First, industrial level photoelectric isolation: it provides more than 3KV photoelectric isolation for all RS-485 interfaces, and effectively solves the transmission problem caused by external lightning surge and ground potential difference.
Two, short circuit open circuit protection: a RS-485 port fault alarm function, and can automatically cut off the fault port, this design can ensure the equipment connected to the RS-485 port when the fault occurs, the problem of RS-485 port will be isolated, to ensure the normal work of other network equipment.
Three, star connection: provide more flexible RS-485 star bus structure. RS-485 interface input and output terminals are driven by independent way, changing the single structure of the original bus, which brings great benefits for the network structure and the stability of the engineering and system.
Four, electrical interface: serial port interface terminal terminal.
Five, the transmission medium: five super shielded twisted pair line or 485 special line.
Six, working way: asynchronous work, point to point or point, 2 line and half duplex.
Seven, transmission distance: the RS-485 end is 1200 meters, and the RS-232 end is not more than 5 meters.
Eight, application: for point to point and point to multipoint communication, industrial control automation, traffic control automation, smart card, access control, attendance, meal selling system, industrial distribution distribution system, CCTV, security systems, POS systems, building automation systems, self-service bank system.
Nine, installation way: Standard 35mm guide type installation.