Method for separating transceiver from bus under multipoint architecture

Abstract

The invention relates to a method for separating a transceiver from a bus under a multipoint architecture, which makes a central processing unit and a universal asynchronous transceiver in a system electrically connected with a controller storing and transmitting data, wherein the controller is connected with the bus through a transceiver for logging data and a relay for connecting and disconnecting the bus with the transceiver, and the controller comprises a signal comparator for comparing data differences and an error detection controller for determining the connection or the disconnection between the bus and the transceiver, thus when the transceiver has failure, the transceiver can be separated from the bus so that the bus can still work even when the transceiver is damaged; besides, a signal pass-back mechanism can be used so that a maintainer can shorten the time for detecting error so as to reduce the operation loss of enterprises caused by the halt of communication equipment.

Description

technical field [0001] The invention relates to fault diagnosis and processing of an industrial bus control system, in particular to a method for disconnecting a transceiver from a bus under a multi-point architecture. Background technique [0002] At present, with the popularization of the Internet and the continuous evolution of technology, enterprises with high traditional manpower intensity have gradually turned to the use of communication and data transmission between various devices to replace a large number of manpower manufacturing methods. The construction of highly automated equipment can not only make Enterprises reduce the expensive expenditure of labor costs, and also reduce the risk of talent flow. Under the construction of various automation equipment, the overall process of production operations is mostly carried out through equipment, and currently multipoint (Multipoint / Multidrop) Network architecture technology serves as a communication and communication m...

AI Technical Summary

Problems solved by technology

[0005] Please refer to FIG. 6 again, which is a schematic diagram of the bus short-circuit situation in the prior art. It can be clearly seen in the figure that there are multiple communication devices C1 on the bus C, and when the communication device C11 of the multiple communication devices C1 short-circuits In this case, other multiple communication devices C12 on the bus C will not be able to operate. Under this structure, it is also impossible to know whether there is a problem with the transceiver B or the communication device C11 of the bus C. The maintenance personnel must waste extra time to solve the problem Find out if transceiver B or communication device C11 is faulty

[0006] Also refer to FIG. 7, which is a schematic diagram of a bus short circuit caused by damage to the transceiver in the prior art. It can also be clearly seen in the figure that there are multiple communication devices C1 on the bus C. When the transceiver B is damaged, not only will the Multiple communication devices C1 on the bus C are abnormal, causing the communication between the multiple communication devices C1 to fail smoothly. When the maintenance personnel arrive, it is impossible to clearly know whether there is a problem with the transceiver B or multiple communications on the bus C. Device C1 fails, so it takes a lot of time to recheck for each communication device

[0007] In this way, for enterprises whose main production method is machine equipment manufacturing, when the transceiver error affects the bus, it will not work, and the time for checking the error device is also quite long. In this case, the mutual influence of enterprise equipment caused The downtime is very long, not only the tangible cost and profit will be lost, but also the intangible reputation may not be shipped to the customer smoothly, and the continuous cooperation with them will cause difficulties. In today's competitive era, the ontology of the enterprise would cause great harm

Images