Der Unterschied zwischen der RS232-Schnittstelle und der RS485-Schnittstelle
First, The Physical Structure Of The Interface 1. RS232 interface: one of the computer communication interface, usually RS-232 interface in the form of 9-pin (DB-9) or 25-pin (DB-25)), there are generally two groups of personal computers on the RS-232 port, called COM1 and COM2. 2.