Function blocks for safety-related functions are key to the success of safety control systems. Although initially they were more or less an image of the functions and properties found on safety relays, gradually the range has been developed to include blocks for special uses such as press applications or burner management. Today, function blocks are available for almost every conceivable safety-related application. All of these have been tested by certified bodies and offer users optimum safety for everyday use.
The concept of function blocks was originally intended for the safety control system, but was then developed to form configurable function blocks for configurable safety relays as described, making applications more customer-friendly. This approach of using configurable function blocks will also be part of a continually developing programming environment for the safety control systems. The user can choose between classic programming e.g. in IEC 61131 and a configuration similar to that of the configurable safety relays.
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| Certified function blocks in hardware and software. |
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