Ensure the CPU is in STOP mode before connecting your programming cable. Establish Connection: Open STEP 5 and select PG Functions → Read PLC Direct Read:

Siemens STEP 5 is a testament to the company's commitment to innovation and excellence in industrial automation. With its rich history, advanced features, and wide range of applications, STEP 5 has become an industry standard for PLC programming. As we look to the future, it's clear that industrial automation will continue to play a vital role in shaping the world of manufacturing and process control. With Siemens STEP 5 and other innovative solutions, industries will be able to overcome the challenges of the future and achieve greater efficiency, productivity, and success.

A I 0.0 // AND input 0.0 = Q 4.0 // Assign to output 4.0 AN I 0.1 // AND NOT input 0.1 = Q 4.1

If you're just starting, don't dive into a live machine immediately. Follow the classic "carwash" tutorial found in the Siemens manual