Expansion limits

Depending on the selected header module (interface module, S7-1500, SP-CPU, or open controller) and parameter assignment, there are different limit values which restrict the maximum configuration of an ET 200SP station.

• Up to 1 m station width (without header module)
• PROFINET:
  • up to 64 I/O modules
  • up to 1440 bytes
• PROFIBUS:
  • up to 32 I/O modules
  • up to 244 bytes of user data including quality information
  • up to 244 bytes of parameters (this limit value only applies for configuring via a GSD file)

Mixed configuration with ET 200AL

It is possible to integrate up to 16 I/O modules of the ET 200AL (IP65/IP67) I/O system in an installation of the scalable I/O system ET 200SP (IP20) via a "BU-Send" BaseUnit and a "BA-Send" BusAdapter.