MPI Adapter Manual
MPI Adapter is also called PC Adapter in this manual. It is used to realize translation from RS232
interface to RS485 interface and from RS232 to MPI (MultiPoint Interface) protocol, and used to
connect the MPI port of S7-300 / 400 PLC to PC COM port (RS232).
MPI is a type of adapter with photoelectric isolation for industrial design. There is surge
protection and the lightning protection circuit in RS232 port and RS485 port, can be safely