A Troubleshooting Method Based on Modbus Extended Communication

Abstract

The invention discloses a fault handling method based on Modbus extended communication. The textile machine is provided with a master station, a slave station for controlling the textile machine to weave, an encoder for reading the weaving execution angle, and reading the completed weaving during the weaving process. The counter of the number of wefts, the master station and the slave station are connected through the Modbus data bus. Internal verification, if the verification is passed, the communication will be normal, if the verification fails, the fault signal will be transmitted to the outside or the current execution status will be collected for troubleshooting. When the speed of data transmission needs to be accelerated, it will enter the Modbus extended communication mode. The physical layer supported by the Modbus extended communication mode Same physical layer as Modbus standard communication. The invention provides a Modbus-based extended communication method which does not need a lot of time for frequently checking data.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a fault processing method based on Modbus extended communication. Background technique [0002] At present, in the textile industry, it is a common setting method to communicate the master station and the slave station through the data bus. Due to the large pattern data, it takes a lot of time in the transmission process. The accuracy of the data needs to verify the pattern data of the slave station. When debugging or cascading failures, it will greatly delay the working time and reduce the working efficiency. [0003] Chinese Patent Publication No. CN106209843A, published on July 12, 2016, the name of the invention is a method for analyzing abnormal data streams for Modbus protocol. The application includes the following steps: Step 1: Initialization stage, generating Modbus protocol data traffic Abnormal analysis model; Step 2: In the initialization phase, generate the M...

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Problems solved by technology

[0004] The present invention is to overcome the problem that a large amount of time is required for frequently verifying data in the prior art, and provides a fault handling method based on Modbus extended communication that does not require a large amount of time for frequently verifying data

When the fault signal is read, it is not completely sure whether the fault will cause communication obstruction or data damage of the slave station. For example, if an abnormal signal of voltage or current is read, such an abnormality can cause part of the equipment to be damaged. , so that the communication cannot be carried out normally or the data of the slave station is damaged. Since the consequences cannot be accurately judged, when an abnormal signal is detected, the communication path is checked to check whether the communication path is smooth. The data of the slave station is checked to confirm whether the data of the slave station has received interference. When confirming the data of the slave station, due to the large data of the slave station, it takes a lot of time to transmit with the Modbus standard communication mode. At this time, the Modbus extended communication is used. Mode, Modbus extended communication mode can transmit a large amount of data at one time, greatly improving the transmission speed

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