CANopen field bus input/output device with short-circuit protection and self-diagnosis function

Abstract

The invention discloses a CANopen field bus input / output device with a short-circuit protection and self-diagnosis function, which comprises a CANopen interface unit and an input / output short-circuit protection and self-diagnosis unit, wherein the CANopen interface unit is used for carrying out data communication with a CANopen field bus, carrying out field data communication with the input / output short-circuit protection and self-diagnosis unit and acquiring input interface state diagnosis data and output interface state diagnosis data; and the input / output short-circuit protection and self-diagnosis unit is used for carrying out the data communication with peripheral equipment, and cutting off power to provide short-circuit protection and transmitting the input interface state diagnosis data and / or the output interface state diagnosis data to the CANopen interface unit when an input interface circuit and / or an output interface circuit are / is short-circuited. The CANopen I / O device of the invention has the short-circuit protection and self-diagnosis function, and can cut off the power and provide self-diagnosis information when the interface power is short-circuited and then return to work automatically after the short-circuit fault is removed.

Description

technical field [0001] The invention relates to the field of computer application technology, in particular to a CANopen field bus input and output I / O device with short-circuit protection and self-diagnosis functions. Background technique [0002] At present, in order to communicate between devices, traditional input / output I / O devices need to connect the external endpoints of the device with the endpoints of the controller one-to-one through wires. This hard-wired connection method requires a lot of energy for on-site assembly. And debugging, and with the complexity of the system will increase a lot of hard wiring costs. [0003] The above-mentioned traditional input / output I / O device does not have any protection and diagnosis functions, for example, it does not have the function of disconnecting the power supply in time when the interface power supply is short-circuited, and cannot provide any protection and diagnosis information, so once I When the I / O device is faulty,...

AI Technical Summary

Problems solved by technology

[0006] But, for above-mentioned CANopen bus line, its input / output I / O device that it has at present does not possess any protection and diagnosis function equally, therefore, urgently need to develop a kind of input and output of CANopen field bus line with short-circuit protection and self-diagnosis function The output I / O device has short-circuit protection and self-diagnosis function, which can cut off the power supply in time when the interface power supply is short-circuited, avoiding burning due to short-circuit current, and provides self-diagnosis information, which is convenient for maintenance personnel to monitor the fault of the device and troubleshooting

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