JPS59178514A - System for interrupting emergency power supply of input/output device - Google Patents

Abstract

PURPOSE:To immediately cope with abnormality when the abnormality occurs, by detecting the cause of the abnormality, sending the detected cause to a central operation processor, and then, cutting off the power supply. CONSTITUTION:An input/output device 3 is equipped with an interface section 4 and mechanism section 5. When abnormality occurs at a part in the mechanism section 5, the input/output device 3 sends a signal representing the abnormality to an error controlling circuit 10 of the interface section 4. Upon receiving the signal, the controlling circuit 10 forms error data corresponding to the signal and sends the data to a central operation processor 1. Therafter, the controlling circuit 10 outputs a power supply cutoff signal and interrupts the power supply of a power supplying section 6 in the mechanism section 5. Since the cause of interruption of the power supply to the input/output device is informed to the central operation processor in this manner, any produced abnormality can be dealt with immediately.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to an emergency power cutoff method for an input/output device, and in particular to a method for maintaining the input/output device that causes the input/output device to be disconnected from its power supply. Emergency power cutoff method for input/output devices used for repairs, etc. (Q) Background of the technology Even for input/output devices connected to a central processing unit, such as a printer, there is a need to cut off the power to the device. , the cause of the disconnection is not limited to one.Therefore, knowing the cause of the power disconnection greatly facilitates maintenance, etc., and there is a strong demand for the development of such technical means.

(C) Conventional technology and problems Conventionally, when a printer that is connected to a central processing unit and is in operation has some kind of power-off cause, such as an abnormality in the hammer driver system, there is no way to eliminate the cause of the power-off. Without identifying it, I immediately turned off the power and turned it back on.

Therefore, after the power is turned off and the printer enters a hibernation state, there is no way to know what caused the power to be turned off.

This is a major reason why it takes more time than necessary for maintenance, repair, etc. Furthermore, if the power is turned on again without knowing the cause, secondary failures may occur depending on the cause of the disconnection.

(d) Purpose of the Invention The present invention has been devised in view of the drawbacks of the conventional system as described above, and its purpose is to provide an input/output device with an abnormality that requires the power to be cut off. To provide an emergency power-off system for input/output devices that detects the cause of an abnormality and turns off the power after sending the signal to the central processing unit, thereby allowing immediate response to an abnormality that occurs. be.

(E) Structure of the Invention The purpose of this invention is to provide an abnormality detection unit for detecting an abnormality occurring in an input/output device in an emergency power cutoff method for an input/output device in a processing system that connects the input/output device to an abnormality information processing device. and a means for notifying the detected abnormality information to the information processing device, and when an abnormality is detected, the power to the input/output device is cut off, and the detected abnormality information is transmitted to the abnormality information processing device. This is achieved by notifying the device and instructing it to take action on the abnormal information.

(-・) Examples of the invention Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In this figure, 1 is a central processing unit and 2 is its memory. The central processing unit 1 is connected to an input/output device 3. The input/output device 3 has an interface section 4 and a mechanism section 5.

The mechanism section 5 includes various sections that need to be powered off in the event of an abnormality, such as a power supply section 6. There are a hammer driver 7, a paper feed mechanism 8, etc., and each of these is configured to send a signal on a line 9 indicating an abnormality when an abnormality occurs therein.

Line 9 is connected to an error control circuit 10 of interface section 4. The error control circuit 10 sends out error data to lines 11-1 according to the cause of the abnormality, and generates an error data transfer control signal on line 12. Also, circuit 10
generates a power down signal on line 13P.

Reference numeral 14 denotes a memory, which temporarily stores error data sent from the error control circuit 10 via the AND gate 15 under the control of the address counter 16, and stores the stored error data in the address counter 16. Under control, read out via AND gate 17 to line 18. is configured to send to

A line 18 is connected to the central processing unit 1 so that error data read from the memory 14 and transferred via the line 18 is stored in the memory 2.

Next, the operation of the configuration device described above will be explained.

If an abnormality occurs in a part of the mechanical section 5 of the input/output device 3, such as a hammer dryer half, for some reason, a signal representing the abnormality is sent to the error detection circuit 10 via a line 9. The error detection circuit 1o responds to the signal on the line 9''2 by sending corresponding error data on the line 11;
An error data transfer control signal is sent onto the cotton 13.

The error data is sent to the memory 14 via the AND gate 15 and temporarily stored in the memory 14 under the control of the address counter 16.

After acquiring such error data (detected abnormality information),
Each section of the input/output device other than the interface section 4 is disconnected from the central processing unit 1, and the error control circuit 10 generates a power cutoff signal on the line 13 to cut off the power to the power supply section 6.

In addition, in response to the response from the central processing unit 1, the information that the input/output device has urgently shut off the power and the error data are stored in the memory 1.
4 and store them in the memory 2 of the central processing unit 1.

In this way, if the power supply of an input/output device is suddenly cut off for some reason, the central processing unit 1 is notified of the cause of the cutoff, and this information is retained, so that the central processing unit can turn off the input/output device. Knowing what caused the power to the input/output device to be cut off will allow you to take immediate action and prevent the input/output device from being turned off.

In the embodiment described above, the detected abnormality information provides (g) effects such as the effects of the invention.

[Brief explanation of drawings]

The accompanying drawings illustrate one embodiment of the invention. In the figure, ■ is the central/iii arithmetic processing unit, 3 is the input/output device,
4 is an interface section, 5 is a mechanism section, IO is an error control circuit, 14 is a memory, 15, 1.7 is an AND gate,
16 is an address counter.

Claims (2)

[Claims] (1) In the emergency power cutoff method for input/output devices in the processing system that connects the input/output devices to the abnormal information processing device,
The input/output device is equipped with an abnormality detection unit that detects an abnormality occurring therein, and means for notifying the abnormality information processing device of the detected abnormality information, and when an abnormality is detected, the power to the input/output device is cut off and An emergency power cutoff method for an input/output device, characterized in that the detected abnormality information is notified to the abnormality information processing device described above, and the system is configured to take measures against the foreign information. (2) 1-Providing an interface section in the input/output device,
A central processing unit Hehi input/output device as an abnormality tIV information processing device is connected through this interface section,
2. An emergency power cutoff method for an input/output device according to claim 1, wherein the interface section is provided with an abnormality detection section and a notification means.