The S7-400 has two different communication interfaces:
The cost-effective solution provided by the MPI integrated in the CPU
The high-performance solution provided by communication modules for point-to-point connections and for connection to PROFIBUS and Industrial Ethernet bus systems.
The following communications modules are available:
CP 440, CP 441-1 and CP 441-2 for point-to-point connections
CP 443-5 for connection to PROFIBUS
CP 443-1 for connection to Industrial Ethernet
CP 444 for connection to Industrial Ethernet using MMS services in accordance with MAP 3.0
Дальнейшая информация
Brochures
Information material for downloading can be found in the Internet: