Functions of the MPI interfaces

• One MPI interface:
  • PG/OP services can be used
  • Status display via LEDs

The visualization components of the SIMATIC HMI such as WinCC or HMI devices can be connected via the MPI. The configuration workstation with CFC in test mode can be linked via this MPI interface.

Using the MPI, the PG and OP services i.e. service, commissioning and visualization, are supported but general process data exchange is not.

Functions of the PROFIBUS DP interfaces

• Up to 2 PROFIBUS DP interfaces:
  • Max. transfer rate 12 Mbit/s
  • Multimaster capability
  • Up to 244 byte of useful data per node
  • SYNC and FREEZE
  • Shared Input
  • Can also be used as slave
  • Configuration in HW Config (DP master / DP slave)
  • DP master supports acyclical services (reading / writing of acyclical data)
  • Status display via LEDs