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PLC and DCS integrated control system

A control system and controller technology, applied in the field of PLC and DCS combined control system, can solve the problems of communication functions and management capabilities that are inferior to DCS, no large-scale control system, large size, etc., and achieve high reliability, small size, and price. low effect

Pending Publication Date: 2017-05-10
HARBIN TIANSHUN CHEM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Programmable Logic Controller (PLC) and Distributed Control System (DCS) are the two most widely used control technologies in the field of industrial control. They each have obvious advantages and disadvantages. For example, PLC plays a dominant role in high-speed sequence control, DCS has an advantage in complex process control; PLC is small in size, flexible in use, and relatively low in price, but it is inferior to DCS in terms of communication functions and management capabilities. Although DCS has strong communication and management capabilities, it is large in size and relatively priced. higher
In this case, users expect to get a control system that combines the advantages of PLC and DCS, but there is no large-scale control system that perfectly combines PLC and DCS in current engineering control

Method used

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  • PLC and DCS integrated control system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] figure 1 It is a structural schematic diagram of the present invention, such as figure 1 As shown, the combined control system includes operator station 1, operator station 2, data server, Ethernet switch, PLC controller, UPS power supply, FCU field communication unit, primary host, secondary host, tertiary host and Configuration interface; the operator station 1, operator station 2, primary host, secondary host and tertiary host are connected to the PLC controller and the FCU field communication unit for information communication through the Ethernet switch.

[0016] Among them, the first-level host is connected to the second-level host and the third-level host through Ethernet; the second-level host is connected to the PLC controller through Ethernet; the signal input port of the FCU field communication unit is connected to the communication signal output port of the PLC controller; The signal input port 2 of the FCU field communication unit is connected to the opera...

example 2

[0019] The combined control system includes operator station 1, operator station 2, data server, Ethernet switch, PLC controller, UPS power supply, FCU field communication unit, primary host, secondary host, tertiary host and configuration interface ; The operator station 1, operator station 2, primary host, secondary host and tertiary host are connected to the PLC controller and the FCU field communication unit for information communication through an Ethernet switch.

[0020] Among them, the first-level host is connected to the second-level host and the third-level host through Ethernet; the second-level host is connected to the PLC controller through Ethernet; the signal input port of the FCU field communication unit is connected to the communication signal output port of the PLC controller; The signal input port 2 of the FCU field communication unit is connected to the operator station 2 through the FBM component and the RS232 interface; the control signal output port of th...

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PUM

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Abstract

The invention presents a PLC (Programmable Logic Controller) and DCS (Distributed Control System) integrated control system, and belongs to the field of industrial production field control. The integrated control system comprises an operator station I, an operator station II, a data server, an Ethernet switch, a PLC, a UPS (Uninterrupted Power Supply), an FCU (Field Communication Unit), a first-level host, a second-level host, a third-level host, and a configuration interface. The operator station I, the operator station II, the first-level host, the second-level host and the third-level host are in information communication connection with the FCU through the Ethernet switch and the PLC. With the system, perfect logic and sequence control can be realized, and process control can be well completed. Moreover, the system has a management function and such advantages as small size, low price, and high reliability.

Description

technical field [0001] The invention relates to a PLC and DCS combined control system, which belongs to the field of industrial production site control. Background technique [0002] Programmable Logic Controller (PLC) and Distributed Control System (DCS) are the two most widely used control technologies in the field of industrial control. They each have obvious advantages and disadvantages. For example, PLC plays a dominant role in high-speed sequence control, DCS has an advantage in complex process control; PLC is small in size, flexible in use, and relatively low in price, but it is inferior to DCS in terms of communication functions and management capabilities. Although DCS has strong communication and management capabilities, it is large in size and relatively priced. higher. In this case, users expect to get a control system that integrates the advantages of PLC and DCS, but there is no large-scale control system that perfectly combines PLC and DCS in current engineer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G05B19/05
CPCG05B19/042G05B19/05
Inventor 孟凡钧孟子顺张会
Owner HARBIN TIANSHUN CHEM TECH DEV CO LTD