Functions - Siemens SIMATIC S7-4100 Equipment Manual

Functions

The CPU is approved for use only in the SIMATIC S7‑4100 controller.
Functions
• The primary task of the CPU is the execution of the user program.
• The internal interfaces enable connection for the data exchange with other components,
e.g. connection of distributed I/O:
– Function of the PN/IE interfaces (PROFINET IO/Industrial Ethernet) (Page 26)
– Function of the PROFIBUS DP interface (Page 28)
• The diagnostic data of the complete controller or the complete automation system is
provided via the CPU.
You can find information about this in the engineering online help.
• Buffering of the module time in the CPU
Configuration limits
You can find information about the available memory, IO numbers and additional data under:
Technical specifications of CPU 4168-H (Page 43)
Functions of the programs of the CPU
SIMATIC distinguishes between the firmware and the user program.
• Firmware (Page 24)
• User program (Page 24)
More information
You can find additional information about the application of the CPU in the following
documentation:
SIMATIC S7-4100, controller (Page 53)
CPU 4168-H
Equipment Manual, 11/2022, A5E51584364-AA
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