Central processing unit for a process control system
AssigneeSiemens Aktiengesellschaft
InventorsGeorg Trummer, Werner Burger
Life of this patent
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Abstract
A process system, for example a storage-programmable control, having a central unit (1) and a number of peripheral devices, for instance I/O assemblies, controller assemblies, etc., which are connected to the central unit (1) via a bus system (7). The central unit (1) includes two processor systems (2, 4) which are separate from each other, one processor system (2) processing real-time tasks and one processor system (4) processing tasks which are not time-critical. The bus system (7) is split into two separate, individual buses (7′, 7″) which are associated with the processor systems (2, 4). In this way, the processor systems (2, 4) are uncoupled from each other upon access to the bus system (7).
Claims27
A process control system comprising a central unit and a plurality of peripheral devices which are connected to the central unit via a bus system, said central unit comprising:
- at least one control processor system including a control processor processing time critical tasks such as real-time tasks;
- and
- at least one additional remainder processor system which is separate from the control processor system and includes a remainder processor processing tasks which are not time critical;
- wherein the bus system includes a control bus and a remainder bus, the control bus being connected to the control processor system, and the remainder bus being connected to the remainder processor system;
- and
- wherein the plurality of peripheral devices are connected independently to each of the control bus and the remainder bus.
A central processing unit for a process control system comprising a central unit and a plurality of peripheral devices which are connected to the central unit via a bus system, said central unit comprising:
- at least one control processor system including a control processor processing time critical tasks such as real-time tasks;
- and
- at least one additional remainder processor system which is separate from the control processor system and includes a remainder processor processing tasks which are not time critical;
- wherein the bus system includes a control bus and a remainder bus, the control bus being connected to the control processor system;
- and
- wherein the plurality of peripheral devices are connected independently to each of the control bus and the remainder bus.
Dependencies are inferred from the claim text.