Communication control device for test control network

Abstract

The invention provides a communication controlling device of a telemetering and command network, the telemetering and command network comprises a plurality of intelligent electronic devices; the communication controlling device comprises communication ports and port driving units, the port driving units control the intelligent electronic devices through the communication ports, the communication controlling device also comprises a general control unit which is connected with the port driving units through a bus, the port driving units are separated from each other and respectively communicatewith the general control unit concurrently through the bus, the general control unit respectively configures all the port driving units according to the loaded configuration files. Compared with the prior control device, the device can greatly improve the refreshing frequency of the intelligent electronic devices, improve the utilization ratio of system resources, and flexibly construct industrial telemetering and command equipment and network.

Description

technical field [0001] The invention relates to a communication control technology, in particular to a communication control device for an industrial measurement and control equipment network. Background technique [0002] In the field of industrial control and measurement, it is often encountered that multiple intelligent electronic devices need to form an industrial measurement and control equipment network, that is to say, it is necessary to coordinate and control multiple intelligent electronic devices at the same time. In order to effectively coordinate and control multiple intelligent electronic devices, it is necessary to set up a control device and adopt a certain communication method so that the control device can effectively communicate with each device. [0003] At present, the communication control device of the measurement and control network is mainly provided with multiple communication ports and a port driver unit. The port driver unit can be, for example, a ...

AI Technical Summary

Problems solved by technology

However, there are certain problems in the control device of the industrial measurement and control equipment network constructed in this way.

First of all, when the number of intelligent electronic devices increases, there will be too many devices under one communication port. If the communication time of each device is kept constant, then each device can be accessed, that is, the time required for one week of polling will be reduced. With the increase, this reduces the refresh frequency and prolongs the refresh time, which cannot meet the requirements of high-speed real-time refresh

Furthermore, since the port driver unit also adopts the polling access method for the communication ports it controls, the increase of intelligent electronic devices will also affect the communication between other communication ports and the port driver unit, prolonging the refresh time

Secondly, if a certain intelligent electronic device fails, or a certain communication port fails, the entire bus where the faulty device or port is located cannot work normally. Still need to participate in polling, which takes up polling time, makes system resources unable to be fully utilized, and reduces system resource utilization

[0006] Therefore, when building an industrial measurement and control equipment network, the above-mentioned control devices can no longer meet the requirements of further increasing the real-time refresh rate and improving the utilization rate of system resources, and gradually become a bottleneck in the development of industrial measurement and control equipment network technology.

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