The S5 series pioneered programming with Step 5 and TTY/RS-232 communication. The S7-200 family with Microwin offered compact solutions for small machines. The S7-300/400 with Simatic Manager (Step 7) became the standard for mid-range and high-end applications, with field buses like MPI, Profibus DP and Ethernet communication (ISO/TCP, PROFINET).

With the arrival of TIA Portal (Totally Integrated Automation), Siemens unified PLC, HMI and drive programming in a single environment. The S7-1200 and S7-1500 integrate a web server, native OPC UA communication, and advanced diagnostic tools. In this section you will find practical guides for all generations.