Siemens automation introduces a successful automation system by registering the SIMATIC trademark with the German Patent Office. Siemens proudly displayed the first generation of a “modular system for contactless controls,” SIMATIC G, ” at the Paris Machine Tool Fair in 1959. SIMATIC G was designed to meet the needs of small and medium-sized engineering businesses. Eikenburg has often remarked on the similarity between having a SIMATIC Controller in your hands and having an actual product to utilize in the process plant.
Relays and contactors have been the primary switching elements in traditional electromechanical systems. Because they were compact and resistant to mechanical wear, transistors were used in SIMATIC G. Because especially dependable control elements are crucial in power plants and transformer stations. These applications for SIMATIC G were the primary ones. Modern hydroelectric power plants and transformer stations require an increasing number of distribution automation functions. Ranging from supervisory control over relays and also, contactors to routine switching control. In 1959, Siemens Automation exhibited its first-generation modular control system, SIMATIC.
The era of programmable logic controllers began in the early 1970s. These devices’ functions were now determined by software rather than fixed wiring, which made programming much simpler. Computing power increased at the same time.