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Automatic material handling system based on programmable logic controller (PLC) control and control method thereof

A control method and material technology, applied in the direction of comprehensive factory control, comprehensive factory control, electrical program control, etc., can solve the problems of long development and debugging time, affecting the production time of processing plants, etc., to meet the effect of timely response

Active Publication Date: 2013-07-10
苏州新施诺半导体设备有限公司
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Problems solved by technology

The manufacturing execution system (MES-Manufacturing Execution System) system and each machine (Cluster-tool) subsystem control software need to be developed from the bottom layer, so the development and debugging time is long, which affects the production time of the processing plant

Method used

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  • Automatic material handling system based on programmable logic controller (PLC) control and control method thereof
  • Automatic material handling system based on programmable logic controller (PLC) control and control method thereof

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Embodiment Construction

[0025] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0026] see figure 1 , the present invention relates to an automatic material handling system controlled by a programmable logic controller (PLC-Programmable Logic Controller), which includes a manufacturing execution subsystem (MES-Manufacturing Execution System), a master control PLC, an overhead crane (OHT- Over Head Hoist Transports) subsystem, overhead crane (OHS-Over Head Shuttles) subsystem, storage (Stocker) subsystem, processing unit subsystem, and machine (Cluster-tools) subsystem within the processing unit subsystem, of which ,

[0027] Overhead Hoist Transports (OHT-Over Head Hoist Transports) subsystem: including multiple overhead cranes (OHT) and one-to-one corresponding overhead crane (OHT) PLC controllers;

[0028] Overhea...

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Abstract

The invention provides an automatic material handling system based on programmable logic controller (PLC) control and a control method thereof. On the basis of a control structure of an existing automatic material handling system (AMHS), all levels of controllers of an original automatic material handling system are replaced by a PLC control system, meanwhile a manufacturing execution system (EMS) developed by WinCC is combined, an overhead hoist transport (OHT) subsystem is modeled according to functional categories on a scheduling algorithm of the OHT subsystem, quantitative limitation is carried out on the quantity of OHT subsystems in the Intrabay and in the Interbay according to an upper limit method respectively, and scheduling is applied according to the categories and is carried out according to a type replacement method. Types of all the OHT subsystems are divided into four types, so the four types are modeled through a rotation mode in scheduling so as to meet in-time response of a tool.

Description

technical field [0001] The invention relates to automatic production equipment and a control method, in particular to an automatic material transfer system based on PLC control and a control method thereof. Background technique [0002] Most of the manufacturers of the existing automatic material handling system (AMHS-Automatic Material Handling System) use industrial computers to control all levels of equipment and machine (Cluster-tool) subsystems and manufacturing execution systems (MES-Manufacturing Execution System) For the structure, the control network adopts Ethernet to connect all levels of equipment. The manufacturing execution system (MES-Manufacturing Execution System) system and each machine (Cluster-tool) subsystem control software need to be developed from the bottom layer, so the development and debugging time is long, which affects the production time of the processing plant. Contents of the invention [0003] The object of the present invention is to ove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 褚明杰曲道奎徐方贾凯刘一恒杨奇峰刘世昌陈廷辉
Owner 苏州新施诺半导体设备有限公司
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