摘要:
An industrial control system communicating among various control elements via a serial network synchronizes the scanning loops associated with collecting and forwarding data along the network so as to substantially reduce transmission delay and jitter, using synchronization information passed along the network.
摘要:
Der erfindungsgemäße Gegenstand, also das erfindungsgemäße Verfahren und die erfindungsgemäße Vorrichtung übernehmen dabei die Funktion eines sogenannten Traffic Shaper. Der Gegenstand reguliert den Datenverkehr flussabhängig unter besonderer Berücksichtigung des höherprioren Echtzeit-Datenverkehrs. Darin unterscheidet er sich maßgeblich von bisher bekannten Traffic Shaper, welche den Datenverkehr nur portabhängig betrachten. Der vom Netzelement ausgehende Datenfluss in das Datennetz wird in einer Art und Weise gesteuert, dass die Datenrate und der maximale Burst für den Nachfolger festgelegt werden können.
摘要:
An operating system (32) for distributed industrial controllers (12a, 12b, 12c) ensures the completion of enrolled application programs (34) within a predetermined time span as is required for robust industrial control by preallocating dynamic and static hardware resources (24a, 24b, 24c) on a per application basis and in a manner that ensures execution of the application within the necessary time constraints. Portions of the distributed operating system (32) may be distributed at particular hardware resources (24a, 24b, 24c) to provide necessary modeling for those hardware resources in making the commitments to resource bandwidths.
摘要:
A distributed control system and methods of operating such a control system are disclosed. In one embodiment, the distributed control system is operated in a manner in which interrupts are at least temporarily inhibited from being processed to avoid excessive delays in the processing of non-interrupt tasks. In another embodiment, the distributed control system is operated in a manner in which tasks are queued based upon relative timing constraints that they have been assigned. In a further embodiment, application programs that are executed on the distributed control system are operated in accordance with high-level and/or low-level requirements allocated to resources of the distributed control system.
摘要:
In a distributed control system for one or more machines and/or one or more processes, data and control commands are transmitted via radio connections between nodes in the control system. The nodes operate with radio transmitters and radio receivers and comprise or are controlled by activation devices for activating their transmission and receiver functions. The nodes also operate with time-determination devices which comprise or control the abovementioned activation devices. The time-determination devices are arranged to determine the transmission or reception position of the nodes by means of the activation devices and allocated settings or controls. The abovementioned settings or controls can be determined by means of one or more schedules implemented in or for the control system, in which the nodes are given unique or co-ordinated transmission and reception times on the radio connections.
摘要:
A distributed control system and methods of operating such a control system are disclosed. In one embodiment, the distributed control system is operated in a manner in which interrupts are at least temporarily inhibited from being processed to avoid excessive delays in the processing of non-interrupt tasks. In another embodiment, the distributed control system is operated in a manner in which tasks are queued based upon relative timing constraints that they have been assigned. In a further embodiment, application programs that are executed on the distributed control system are operated in accordance with high-level and/or low-level requirements allocated to resources of the distributed control system.
摘要:
In a distributed control system for one or more machines and/or one or more processes, data and control commands are transmitted via radio connections between nodes in the control system. The nodes operate with radio transmitters and radio receivers and comprise or are controlled by activation devices for activating their transmission and receiver functions. The nodes also operate with time-determination devices which comprise or control the abovementioned activation devices. The time-determination devices are arranged to determine the transmission or reception position of the nodes by means of the activation devices and allocated settings or controls. The abovementioned settings or controls can be determined by means of one or more schedules implemented in or for the control system, in which the nodes are given unique or co-ordinated transmission and reception times on the radio connections.