Description

Function modules (FMs) are intelligent modules for the SIMATIC S7 controller family. They execute technological tasks independently and, consequently, relieve the load on the CPU.
Function modules are used for applications demanding ultimate precision and dynamic response.
STEP 7 and STEP 7-Micro/WIN provide a series of configuration tools for parameterizing FMs. All parameterization and commissioning procedures are performed on easy-to-use interactive screen forms.
In the interest of integration, there is great similarity between the FMs of the S7-300 and S7-400 series in the areas of functionality and parameterization. These FMs mostly differ only in their performance profile. User programs can be used both in the S7-300 and in the S7-400. The function modules of the S7-300 may be used in the ET 200M distributed I/O system.

Area of application

Benefits