Method for judging local area network (LAN) fault state in LAN-based extensions for instrumentation (LXI) device

A fault state and state technology, applied in the direction of data exchange through path configuration, digital transmission system, electrical components, etc., can solve the problems of unfavorable fault confirmation and elimination, and achieve easy confirmation and elimination, good compatibility and good practicability Effect

Inactive Publication Date: 2010-07-14
HARBIN INST OF TECH
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Problems solved by technology

[0011] The purpose of the present invention is to solve the problem that the LAN state indicator in the existing LXI equipment uses an uninterrupted red state to indicate the fault states of four LANs, which is not conducive to the confirmation and elimination of the fault by the user, and provides a method for judging the LAN fault state in the LXI device

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  • Method for judging local area network (LAN) fault state in LAN-based extensions for instrumentation (LXI) device
  • Method for judging local area network (LAN) fault state in LAN-based extensions for instrumentation (LXI) device
  • Method for judging local area network (LAN) fault state in LAN-based extensions for instrumentation (LXI) device

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specific Embodiment approach 1

[0037] Specific implementation mode one: the following combination figure 1 and figure 2 Illustrate this embodiment, the LAN state indicating device comprises two-color LED1, FPGA2 and embedded processor 3 in the present embodiment LXI equipment, the GPIO output end of embedded processor 3 is connected with the state signal input end of FPGA2, and the output end of FPGA2 is connected with Two-color LED1 input connected,

[0038] After the LXI device is powered on, the user activates the LCI program in the embedded processor 3, and the FPGA2 adjusts the timing to display the LAN fault status. The specific process is as follows:

[0039] The LCI program in the embedded processor 3 has five working states, which are: undefined state, error 1 state, error 2 state, no error state and device identification state, the initial working state of the LCI program of the embedded processor 3 is in an undefined state,

[0040] state 1: undefined state,

[0041] In the undefined state, ...

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Abstract

The invention discloses a method for judging the local area network (LAN) fault state in LAN-based extensions for instrumentation (LXI) device, belonging to the field of mechanical and electrical integration. The invention is designed to solve the problem that an LAN state indicator in the existing LXI device displays four LAN fault states by an interrupted red state, which is not beneficial to a user about the fault confirmation and elimination. The invention does not disobey the LXI standard and carries out the expansion design on the LAN state indication function of the LXI device without needing of changing the LXI device hardware. The invention respectively displays different LAN fault or error states of the LXI device by the states not used by the LXI standard, provides the convenience for the user to confirm and eliminate the LAN fault or error of the LXI device, and increases the practicability of the LXI device. The invention can be applied to various LXI instrument designs and has excellent compatibility.

Description

technical field [0001] The invention relates to a method for judging a LAN fault state in an LXI device, and belongs to the field of electromechanical integration. Background technique [0002] The LXI specification stipulates that "LXI equipment has LED status indicators for power, LAN, and IEEE1588 status indicators in some applications." Wherein, the function of the LAN status indicator is different from that of the standard LAN activity indicator, and the standard LAN activity indicator is usually set on the RJ-45 connector. The LXI specification recommends that the LAN status indicator should be a bicolor (red / green) LED, which provides two functions: LAN error indication and device identification. , and its state is shown in Table 1: [0003] Table 1 Status identification table of LAN status indicator with dual-color (red / green) LED [0004] [0005] The LXI specification stipulates that: LXI devices must use the LAN status indicator to report to the user LAN fai...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/24H04L12/28
Inventor 刘兆庆彭宇俞洋支飞虎于涛彭喜元
Owner HARBIN INST OF TECH
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