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Multipath signal processing method of embedded PLC system, and embedded PLC system

A multi-channel signal and processing method technology, applied in the field of embedded control, can solve the problem of high cost

Inactive Publication Date: 2017-10-20
HANGZHOU DIANZI UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The invention provides an embedded PLC multi-channel signal processing method and an embedded PLC system to solve the problem of high cost caused by installing multiple intelligent devices for communication with multiple master devices

Method used

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  • Multipath signal processing method of embedded PLC system, and embedded PLC system
  • Multipath signal processing method of embedded PLC system, and embedded PLC system
  • Multipath signal processing method of embedded PLC system, and embedded PLC system

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Experimental program
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Embodiment approach

[0065] Under this implementation mode, the first protocol conversion can be implemented in different ways according to different master devices 9, and then an embedded PLC system can be used to realize separate processing for different master devices 9. The way of equipment can effectively reduce the cost.

[0066] Before the step S11, in one of the implementation manners, further comprising: querying the one processing module 1 corresponding to the one master device 9 through a query module. The query module may be a function implemented by the processor 7 calling the code segment of the query module stored in the memory 8 . After passing the query, the query module can transmit the information sent by the master device 9 received by the first communication device 5 to the corresponding processing module 1 . In this embodiment, it can be applied to the case where the number of first communication ports 51 in the first communication device 5 is less than that of the processin...

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Abstract

The invention provides a multipath signal processing method of an embedded PLC system, and the embedded PLC system. The method comprises the following steps: performing first protocol conversion on a to-be-answered command sent by a main device through a processing module corresponding to the main device; in the case that effective answer data corresponding to the to-be-answered command are not recorded, putting the to-be-answered command subjected to the first protocol conversion in a corresponding queue in M queues by a learning engine; sending commands to an intelligent device in sequence according to the priorities of the M queues by a first communication apparatus, and receiving the effective answer data sent by the intelligent device, wherein the effective answer data are obtained by the intelligent device according to the to-be-answered command; performing second protocol conversion on the effective answer data through the processing module; and sending the effective answer data subjected to the second protocol conversion to the main device through a second communication apparatus.

Description

technical field [0001] The invention relates to the field of embedded control, in particular to an embedded PLC multi-channel signal processing method and an embedded PLC system. Background technique [0002] In the field of industrial control, embedded PLC (Programmable Logic Controller Programmable Logic Controller) communicates with smart devices according to the agreed protocol, reads the data of smart devices and perceives the state, or performs state control and parameter setting on the devices. [0003] In the field of industrial control, the "master-slave" communication method is a common communication method. In this mode, only the master device can initiate communication, and the smart device as a slave device can only respond to the communication initiated by the master device according to the communication content, and the slave device cannot actively initiate communication to the master device. [0004] In many scenarios such as monitoring application scenarios...

Claims

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Application Information

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IPC IPC(8): H04L12/413H04L12/40H04L29/06
Inventor 陈佰平邬惠峰赵建勇
Owner HANGZHOU DIANZI UNIV
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