2-way 1 RS-485 Intelligent share 
 First, use 
 2-way RS-485, 1 RS-485 Smart shared (Model: HUB2485Z the) for the two RS-485 host computer to control an RS-485 machine communication link. HUB2485Z RS-485 bus from the traditional to allow a host extended to allow two hosts. HUB2485Z have two host computer jack (DB-9 pin and is equipped with terminals) and a lower machine terminals, no need to modify the software and 5V power supply. 
 HUB2485Z applies to both the host computer RS-485 port to simultaneously drive a crowd machine RS-485 port. 
 Second, the installation and performance 

 HUB2485Z the outlook for the DB-9 (pin) / DB-9 (pin) adapter box the size of the DB-9 pin RS-485 pin assignments with Boshi 485A models of converter and distribution terminals. Two DB-9 pin host computer RS-485 port, as shown in Figure RS-485 (1) and RS-485 (2) is exactly the same and may be interchanged. Bit machine, the RS-485 terminals in Figure products on the side, with the power terminal. HUB2485Z requires an external 5V power supply, supporting the provision. 
 The the Boshi HUB2485Z intelligent the RS-485 hub able to identify two host computer RS-485 (1) and RS-485 (2) send the order to avoid at the same time send a result of system failures. In other words, even if the two host computer are sent simultaneously, HUB2485Z will select the host computer to send the start time leading right to send data until a host computer to send data after a host computer before they can begin sending data. HUB2485Z with two-way communications capabilities, the current bit machine to send the two host computer receives the same data does not distinguish between the address. 
 Appendix: 
 Two host computer RS-485 port 
 123 DB-9 pin end of the pin state 
 RS-485 (+) RS-485 (-B) GND (ground)