Control system for controlling safety-critical and safety-critical processes

摘要

Control system for controlling safety-critical and safety-critical processes and / or plant components, which preferably is constructed in modular fashion, with at least one first control unit (1), which for the control of the non safety-critical process and / or of the non safety-critical system components is provided with at least an input / output unit (11), (21), which by means of an internal input / output bus (b2) with the first control unit (1) is connected, and with at least one communication coupler (5), (6), which by means of an internal kopplerbus (b1) with the first control unit (1) and is connected via a field bus (fb) with further decentralized units (7), (8), wherein at least a second control unit (2) for the control of the safety-critical process and / or of the safety-critical system components is provided, characterized in that– the second control unit (2) for providing the failsafe functions at least two processors (22a), (22b) and a first dual - port ram (dpr), wherein only one of the two processors (22a), (22b) with the first dual - port ram (dpr) is connected,– the second control unit (2) via the first dual - port ram (dpr) and the internal kopplerbus (b1) with the first control unit (1) and the first control unit (1), the data from the second control unit (2) at the communication coupler (5) via the internal kopplerbus (b1) and a further in the communication coupler (5) integrated dual - port ram (dpr2).