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APPARATUS AND METHODS FOR COMMUNICATIVELY COUPLING FIELD DEVICES TO CONTROLLERS IN A PROCESS CONTROL SYSTEM USING A DISTRIBUTED MARSHALING ARCHITECTURE
APPARATUS AND METHODS FOR COMMUNICATIVELY COUPLING FIELD DEVICES TO CONTROLLERS IN A PROCESS CONTROL SYSTEM USING A DISTRIBUTED MARSHALING ARCHITECTURE
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机译:使用分布式编组结构在过程控制系统中将场设备与控制器进行通信耦合的装置和方法
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摘要
Apparatus, systems, and methods for communicating data between a controller and a multiplicity of field devices operating in a process plant are provided. The system includes distributed marshaling modules coupled by a head-end unit to I/O cards in communication with the controller. The distributed marshaling modules communicate with the field devices via respective electronic marshaling components converting signals between the field devices and the I/O cards. The distributed marshaling modules are coupled to the head-end unit by a ring communication architecture, such that the distributed marshaling modules may each be located relatively proximate to the field devices to which they are coupled.
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