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2026-04-24 01:50本頁面

　　

【正文】 o more mon. Mainly these two relatively cheap and you can meet the oldfashioned, simple (or simple) industrial equipment. So he can see them now, however these two control modes (relay and discrete electronic circuits) are these fatal flaws: (1) cannot adapt to the plex logic control, (2) only for the current project, the lack of patibility and (3) not reforming the system with equipment improvements. Spring for the development of China39。s modern industrial automation technology the substantial increase in the level of industrial automation, pleted the perfect relay of the puter too much. In terms of controlling the puter showed his two great advantages: (1) each of the hardware can be installed on one or more microprocessors。 (2) the official designer of the software writing content control is all about. Now in several ways in the context of industrial automation can often be seen in three ways: (1) Programmable Logical Controller (referred to as IPC)。 (2) Distributed Control System (DCS for short), and (3) the Programmable Logical Controller (PLC for short). PLC and the IPC and DCS contrast contrast 1, each of the three technologies of origins and development requirements for fast data processing makes it invented the puter. The men brought in terms of hardware there, using a high level of standardization, can use more patibility tools, is a rich software resources, especially the need for immediacy in operational systems. So the puter can effectively control is used to control and meet its speed, on the virtual model, realtime and in putational requirements. Distributed system started with a control system for industrial automatic instrument used to control, whereas now it is successfully developed into industrial control puter used as a central collection and distribution system and transition of distributed control system in analogue handling, loop control, has begun to reflect the use of a huge advantage. Though distributed system has great advantages in loop regulation, but only as a means of continuous process control. Optimization of PLC is the corresponding relay needs was born, its main use in the work order control, early primary is replaced relay this hulking system, focused on the switch controlling the running order of functions. Marked by the microprocessor in the early 1970 of the 20th century emerged, microelectronics technology has developed rapidly, people soon microelectronics processing technology will be used in the Programmable Logical Controller (that is

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