A data conversion method between a host control system and a remote device

Abstract

The invention belongs to the technical field of automatic control, and in particular relates to a data conversion method of an upper control system and a remote device. Including the following steps: (1) Installation of hardware equipment, including host monitoring PC, Siemens PCS7 system, gateway HPM‑610 and Rosemount pressure transmitter; (2) installing gateway HPM‑610 software HT‑123 to the host monitoring PC, Set the gateway HPM-610 under the software HT-123; (3) The real-time data of the Rosemount pressure transmitter is transferred to the Siemens PCS7 system after protocol conversion by the protocol converter and displayed by the host monitoring PC; (4) ) Use the structured programming language SCL to write the source code of the data conversion program, and form a function block FB with data conversion function; (5) Perform configuration in the continuous function block CFC, compile and download the configured continuous function block CFC to realize Data conversion functions. The invention realizes communication and data conversion between different bus protocols, and realizes compatible application and complementary advantages of various buses.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a data conversion method of an upper control system and a remote device. Background technique [0002] Fieldbus is a digital communication technology that realizes two-way serial multi-node between measurement and control equipments, which is applied in the production site. The fieldbus control system FSC (Fieldbus Control System) belongs to the networked control system NCS (Networked Control System). The advantages of autonomy and adaptability to the field environment have realized the fully distributed control completely dispersed in the field. [0003] Since the advent of fieldbus technology, with the development of technology, many companies have proposed a variety of fieldbus communication protocols according to industry needs, such as Profibus (Process Fieldbus) is an international bus for factory process automation; HART (highway addressable remote ...

AI Technical Summary

Problems solved by technology

[0003] Since the advent of fieldbus technology, with the development of technology, many companies have proposed a variety of fieldbus communication protocols according to industry needs, such as Profibus (Process Fieldbus) is an international bus for factory process automation; HART (highway addressable remote transducer) bus, developed by Rosemount Company, which solves the problem of excessive transition from analog instruments to digital instruments; CAN (Controller Area Network) bus was developed by German Bosh Company in 1986 to solve the communication between many measuring components and controllers in modern automobiles Serial data communication bus; FF (Foundation Fieldbus) Field Foundation bus is a bus developed to adapt to process automation control systems; these bus protocols have their own unique advantages, but their compatibility is poor, user autonomy is low, and it cannot be realized Communication of data between different bus types

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