Series

SIMATIC S7-300

Siemens’ modular mid-range PLC family. CPUs, I/O, function and communication modules mount side by side on a profile rail; ET 200M remote I/O stations use the same modules.

256 part numbers

About the series

Manufacturer
Siemens
Product type
Modular PLC (mid-range)
Software
STEP 7 (V5.x) and TIA Portal
Communication
MPI, PROFIBUS DP, PROFINET / Industrial Ethernet (depending on CPU and CP module)
Lifecycle status
In Siemens phase-out; since 1 October 2025 supplied only in spare-part quantities
Successor
SIMATIC S7-1500 (ET 200MP for ET 200M)

Series information is compiled from manufacturer sources. Part-specific technical data is sent with the quote.

All part numbers