The history of Simatic controllers dates back to the 1950s. On 2 April 1958, Siemens’s SIMATIC G was launched. That was an industrial process controlling system. Numerous modifications to the controllers, which the brand introduced for nearly fifteen years, were not easily programmable. This was, to some extent, a shortcoming of the innovative product. In the 1970s, the history of freely programmable PLC controllers, the characteristic feature of which is their modular design, was initiated. The central unit was able to communicate with extension modules, which influenced the comfort of work and provided a lot of possibilities for industrial automation. This was an innovative solution, which still works well in the automation of machines and industrial processes. There’s no denying that Simatic controllers are an incredibly popular and functional innovation.


With the Simatic controllers, you are guaranteed excellent control of the operated objects. For several years, these controllers have proven themselves in the construction of control systems designed to facilitate the operation of industry. Automation of industrial processes includes numerous improvements and enhancements to productivity. Durability, predictability and repeatability are definitely the advantages of Simatic controllers. The solution is also quite flexible, as we are dealing with a modular structure. The strength of Simatic controllers is also their performance and the fact that programming is extremely intuitive and uncomplicated. No wonder that systems based on Simatic controllers are being increasingly popular, which requires the manufacturer to constantly improve the product and adapt to the needs of today’s customers. Industrial automation benefits greatly from the use of Simatic controllers.


In order to fulfill the demands of industry professionals, the manufacturer had to upgrade its controllers to provide them with perfect performance and flexibility. For a trustworthy and configurable system, the Simatic S7 is the obvious choice. Since the S5 series, which has proven itself over many years, was discontinued in 2003, the transition to the Simatic S7 system seems reasonable. Spare parts for S5 will no longer be manufactured in 2015.


Upgrading from S5 to S7 requires expertise and the necessary competencies to ensure that the process runs smoothly and the effect does not cause any problems for the user. The modernization process may be associated with errors that may result in damage to the controlled objects. And to avoid machinery or production line breakdowns, we recommend choosing engineers who are familiar with both the S5 and the Simatic S7.

Upgrading to the S7 system will ensure that there is no downtime caused by a possible failure of the system, which is still functioning today through the S5 system. The limited availability of spare parts on the market means a higher cost of servicing S5-based machines and a difficulty in obtaining replacements in the event of a serious breakdown. The switch to S7 means lower operating costs.