HGT20573-1995分散型控制系统.doc

UDC TRADE STANDARD ?OF THE PEOPLES REPUBLIC OF CHINA 中华人民共和国标准Code for Distributed Control System Engineering Design 分散型控制系统工程 设计规定 Issued on August 28, 1995 Implement on November 1, 1995 Ministry of Chemical Industry of The People’s Republic of China Document of Ministry of Chemical Industry HJF (1995) 647 The notification about issuing the professional standard Code for distributed control system engineering design To the provinces, autonomous regions, municipalities, municipal chemical agencies (bureaus, companies) listed in the state plan, the relevant organizations: The Code for distributed control system engineering design constituted by China Chengda Chemical Engineering Co., Ltd. under the organization of the Central Station of Automation Design Technology of our ministry has been approved to be voluntary professional standard; the number is HG/T 20573-95. It will enter into force from Nov 1, 1995. This standard is under the administration of the Central Station of Automation Design Technology of the ministry and will be published and issued under the charge of the Center for Engineering Construction Standard Compilation of the ministry. Ministry of Chemical Industry August 28, 1995 TRADE STANDARD ?OF THE PEOPLES REPUBLIC OF CHINA 中华人民共和国标准Chief Editing organization: China Chengda chemical engineering Co., Ltd. Approval department: Ministry of Chemical Industry Implementation date: November 1, 1995 Center for Engineering Construction Standard Compilation, Ministry of Chemical Industry 1995, Beijing Contents 1 General 5 1.1 Purpose 5 1.2 Scope of application 5 1.3 Referenced standards and codes 5 2 DCS application principle 6 2.1 Necessity 6 2.2 Feasibility 6 3 Basic functions of DCS 7 3.1 Process control function 7 3.2 Operating function 7 3.3 Display function 7 3.4 Alarm function 7 3.5 Tabling and printing function 7 3.6 Information management function 7 3.7 Communication function with upper computer and PLC 8 3.8 Sys