JP2008141438A - Photoelectric sensor system of multiple optical-axis, multiple optical-axis photoelectric sensor, abnormality specifying apparatus, abnormality specifying method, and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photoelectric sensor system of multiple optical-axis to immediately correspond to an operational abnormality of a multiple optical-axis photoelectric sensor to be constituted in a manner that photoelectric sensor units of a plurality of multiple optical-axis to detect an abnormal state of a plurality of sorts of selves are connected in series. <P>SOLUTION: An abnormality specifying screen 50 is provided with abnormal state input portions 55a and 55b, and a display content of an error pilot lamp provided in each floodlight unit and each light-receiving unit is input to a computer. The abnormality specifying screen 50 is provided with an error cause displaying portion 57a and a coping method displaying portion 57b. The computer displays an abnormality cause by which each floodlight unit or each light-receiving unit comes into the abnormal state on the error cause displaying portion 57a, and also it displays a coping method to solve the abnormal state of each floodlight unit or each light-receiving unit on the coping method displaying portion 57b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a multi-optical axis photoelectric sensor system having a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting a plurality of types of abnormal states in series, a multi-optical axis photoelectric sensor, The present invention relates to an abnormality identification device, an abnormality identification method, and a storage medium.

  Conventionally, as a multi-optical axis photoelectric sensor for detecting an object arranged in a detection area, there is one as described in Patent Document 1, for example. The multi-optical axis photoelectric sensor includes a light projector configured such that a plurality of sensor units (light projecting units) including light projecting elements can be added in series, and a plurality of sensor units (light receiving units) including light receiving elements. Includes a light receiver that can be expanded in series connection, and a detection area is formed between the light projector and the light receiver.

In addition, each sensor unit has an error detection circuit that detects its own abnormal state such as overcurrent due to double light projection and excessive light reception, communication error due to poor connection between sensor units, and error display that informs these abnormal states A lamp is provided so that the state of each sensor unit can be grasped. The operator confirms the display content of the error indicator light, and compares the display content with the correspondence table described in association with the abnormal state (abnormal content) indicated by the display content. The abnormal part in is identified.
JP 2006-279676 A

  However, in the above-described method for identifying an abnormal location, as the number of sensor units to be connected increases, the combination of display contents of the abnormality increases. Therefore, it becomes difficult for an operator to identify the abnormal location, and the multi-optical axis photoelectric sensor It was not possible to respond quickly to abnormal operation.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting a plurality of types of abnormal states. An object of the present invention is to provide a multi-optical axis photoelectric sensor system, a multi-optical axis photoelectric sensor, an abnormality identification device, an abnormality identification method, and a storage medium that can quickly cope with sensor operation abnormality.

  In order to solve the above problems, a multi-optical axis photoelectric sensor unit configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting a plurality of types of abnormal states in series, and an abnormality of each of the multi-optical axis photoelectric sensor units. A multi-optical axis photoelectric sensor system comprising an abnormality identification device that identifies an abnormality of the multi-optical axis photoelectric sensor based on detection of a state, wherein the abnormality identification device is an abnormality in the multi-optical axis photoelectric sensor. Error information storage means for storing error information including a location in association with abnormality information related to the abnormal state of the multi-optical axis photoelectric sensor unit and positional information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor; Abnormality information acquisition means for acquiring abnormality information of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor; The error information corresponding to the abnormality information and the position information is read from the error information storage unit based on the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the stage, and the read error information And an abnormality notification means for informing the outside.

  According to this configuration, the abnormality notifying unit notifies the error information including the abnormal part in the multi-optical axis photoelectric sensor to the outside, so that the operator (operator) can detect the multi-optical axis photoelectric sensor based on the error information. An abnormal part can be easily grasped, and an operation abnormality of the multi-optical axis photoelectric sensor can be quickly dealt with.

  According to a second aspect of the present invention, in the multi-optical axis photoelectric sensor system according to the first aspect, the error information includes abnormal contents of the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in an abnormal state. The abnormality notification means notifies error information including the abnormality content.

  According to this configuration, the abnormality notifying unit notifies the error information including the abnormality contents of the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in an abnormal state to the outside, so that the operator Therefore, it is possible to easily grasp the contents of the abnormality based on the above and to quickly cope with the operation abnormality of the multi-optical axis photoelectric sensor.

  A third aspect of the present invention is the multi-optical axis photoelectric sensor system according to the first or second aspect, wherein the error information includes the multi-optical axis photoelectric sensor unit that is in an abnormal state. The abnormality notifying means notifies the error information including the abnormality cause.

  According to this configuration, the abnormality notification means notifies the outside of the error information including the cause of the abnormality in which the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in the abnormal state is in an abnormal state. Can easily grasp the cause of the abnormality based on the error information, and can quickly cope with the abnormal operation of the multi-optical axis photoelectric sensor.

  The invention according to claim 4 is the multi-optical axis photoelectric sensor system according to any one of claims 1 to 3, wherein the error information includes the multi-optical axis photoelectric sensor unit in an abnormal state. Including a coping method for eliminating the abnormal state of the optical axis photoelectric sensor, and the abnormality notifying means reports error information including the coping method.

  According to the same configuration, the abnormality notifying means notifies the outside of error information including a coping method for eliminating the abnormal state of the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in an abnormal state. The operator can directly grasp the coping method based on the error information, and can quickly respond to the abnormal operation of the multi-optical axis photoelectric sensor.

  According to a fifth aspect of the present invention, in the multi-optical axis photoelectric sensor system according to any one of the first to fourth aspects, the abnormality notification unit includes the abnormality information and the position acquired by the abnormality information acquisition unit. When a plurality of the error information is acquired based on the information, the error information is notified in association with the priority set for each error information.

  According to this configuration, when the abnormality notification unit acquires a plurality of error information based on the abnormality information and the position information acquired by the abnormality information acquisition unit, the priority information set for each of the plurality of error information is set. Since the notification is made in association with the degree, the operator can grasp the error information in association with the priority.

  A sixth aspect of the present invention is the multi-optical axis photoelectric sensor system according to any one of the first to fifth aspects, wherein the abnormality information acquisition unit is configured to inform an operator of a plurality of the multi-optical axis photoelectric sensor units. The user is prompted to input the abnormality information in an order corresponding to the connection order.

  According to the configuration, the abnormality information acquisition unit prompts the operator to input abnormality information in an order corresponding to the connection order of the plurality of multi-optical axis photoelectric sensor units, thereby reducing erroneous input of abnormality information by the operator. be able to.

  A seventh aspect of the present invention is the multi-optical axis photoelectric sensor system according to any one of the first to sixth aspects, wherein the abnormality information acquisition means acquires the abnormality information by selective input by an operator. To do.

  According to this configuration, the abnormality information acquisition means acquires abnormality information by selective input by the operator, so that it is easy for the operator to input abnormality information and input errors can be reduced. .

  The invention according to claim 8 is the multi-optical axis photoelectric sensor system according to claim 7, wherein the abnormality information acquisition means is selectively selected from the plurality of abnormality information corresponding to the plurality of types of abnormality states. Is obtained for each of the plurality of multi-optical axis photoelectric sensor units, in the multi-optical axis photoelectric sensor unit selectively input first Based on the abnormality information, related to the abnormality information in the multi-optical axis photoelectric sensor unit that is selectively input first among the plurality of abnormality information in the multi-optical axis photoelectric sensor unit that is selectively input next. Unusable abnormal information was made unselectable.

  According to the same configuration, the abnormality information acquisition means makes it impossible to select abnormality information that is not related to the abnormality information that has been selectively input first at the time of the next selection input. Can be reduced.

  According to a ninth aspect of the present invention, in the multi-optical axis photoelectric sensor system according to any one of the first to fifth aspects, the abnormality information acquisition unit detects an abnormal state of each of the multi-optical axis photoelectric sensor units. The abnormality information is acquired based on an input of an abnormality detection signal from each of the multi-optical axis photoelectric sensor units based on.

  According to the same configuration, the abnormality information acquisition means acquires abnormality information based on an input of an abnormality detection signal from each of the multi-optical axis photoelectric sensor units based on detection of an abnormal state of each of the multi-optical axis photoelectric sensor units. The error information can be obtained without the operator inputting the abnormality information to the abnormality information acquisition means.

  A tenth aspect of the present invention is the multi-optical axis photoelectric sensor system according to any one of the first to ninth aspects, wherein the number of connection units acquires the number of connections of the multi-optical axis photoelectric sensor units connected in series. The abnormality information acquisition means prompts an operator to input the number of abnormality information corresponding to the number of connected multi-optical axis photoelectric sensor units.

  According to this configuration, the abnormal information acquisition means prompts the operator to input the number of abnormal information corresponding to the number of connected multi-optical axis photoelectric sensor units, so that unnecessary input items are eliminated. Can be reduced. In addition, input errors by the operator can be reduced.

  The invention according to claim 11 is the multi-optical axis photoelectric sensor system according to any one of claims 1 to 10, wherein one multi-optical axis is selected from a plurality of types of the multi-optical axis photoelectric sensor. A model selection unit that selects a model of the photoelectric sensor is provided, and the error information storage unit stores error information including an abnormal portion in the multi-optical axis photoelectric sensor for each of the multi-optical axis photoelectric sensors of the plurality of types of models. The abnormality notification means includes the model of the multi-optical axis photoelectric sensor acquired by the model selection means, the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition means. Based on the error information storage means, the error information is read out, and the read out error information is notified to the outside.

  According to the same configuration, the abnormality notifying means notifies the error information read based on the model of the multi-optical axis photoelectric sensor and the abnormality information and position information to the outside. It is possible to quickly cope with an abnormal operation of the multi-optical axis photoelectric sensor system having the above, and versatility is improved.

  A twelfth aspect of the present invention is the multi-optical axis photoelectric sensor system according to any one of the first to eleventh aspects, wherein the abnormality notifying unit includes an abnormal point display unit that graphically displays the abnormal point. Prepared.

  According to this configuration, since the abnormal location is displayed graphically on the abnormal location display means, the operator can easily grasp the abnormal location, and can quickly respond to abnormal operation of the multi-optical axis photoelectric sensor system. Can respond.

  The invention according to claim 13 is a multi-optical axis photoelectric sensor comprising a plurality of multi-optical axis photoelectric sensor units that are capable of detecting a plurality of types of abnormal states and connected in series. Error information storage that stores error information including an abnormal location in association with abnormality information related to the abnormal state of the multi-optical axis photoelectric sensor unit and positional information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor. Means, abnormality information acquisition means for acquiring abnormality information of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor, and the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition means. The error information corresponding to the abnormality information and the position information is read from the error information storage unit based on the abnormality information and the position information. With an abnormality informing means for informing the error information that was read to the outside.

  According to this configuration, the abnormality notifying unit notifies the error information including the abnormal part in the multi-optical axis photoelectric sensor to the outside, so that the operator can easily detect the abnormal part of the multi-optical axis photoelectric sensor based on the error information. It is possible to quickly grasp the abnormal operation of the multi-optical axis photoelectric sensor.

  The invention according to claim 14 is an abnormality identification device for identifying an abnormality of a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting an abnormal state of a plurality of types in series. Error information including an abnormal part in the multi-optical axis photoelectric sensor is obtained by referring to abnormality information regarding the abnormal state of the multi-optical axis photoelectric sensor unit and position information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor. Error information storage means for storing in association with each other, abnormality information acquisition means for acquiring the abnormality information of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor, and the abnormality information acquisition means Corresponding to the abnormality information and the position information from the error information storage means based on the abnormality information and the position information of the multi-optical axis photoelectric sensor unit That reads the error information, including an abnormality informing means for informing the error information thus read out to the outside.

  According to this configuration, the abnormality notifying unit notifies the error information including the abnormal part in the multi-optical axis photoelectric sensor to the outside, so that the operator can easily detect the abnormal part of the multi-optical axis photoelectric sensor based on the error information. It is possible to quickly grasp the abnormal operation of the multi-optical axis photoelectric sensor.

  The invention according to claim 15 is an abnormality identification method for identifying an abnormality of a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting a plurality of types of abnormal states in series. An abnormality information acquisition step of acquiring abnormality information related to the abnormal state of the multi-optical axis photoelectric sensor unit in association with position information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor; Based on the abnormal information and the position information of the multi-optical axis photoelectric sensor unit acquired by the optical system, the abnormal information on the abnormal state of the multi-optical axis photoelectric sensor unit and the multi-optical axis photoelectric of the multi-optical axis photoelectric sensor unit. Before reading out the error information including the abnormal part in the multi-optical axis photoelectric sensor stored in association with the position information in the sensor And a abnormality notification step of notifying the error information to the outside.

  According to the configuration, in the abnormality notification acquisition step, the error information including the abnormal part in the multi-optical axis photoelectric sensor is notified to the outside, so that the operator can detect the abnormal part of the multi-optical axis photoelectric sensor based on the error information. Can be easily grasped, and an abnormal operation of the multi-optical axis photoelectric sensor can be quickly dealt with.

  According to the sixteenth aspect of the present invention, an abnormality of a multi-optical axis photoelectric sensor configured by a plurality of multi-optical axis photoelectric sensor units that are executed by a computer and can detect a plurality of types of abnormal states is connected in series. A storage medium storing a program for acquiring abnormality information related to the abnormal state of the multi-optical axis photoelectric sensor unit in association with position information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor Based on the information acquisition process, the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition means, abnormal information on the abnormal state of the multi-optical axis photoelectric sensor unit and its multiple light An abnormality in the multi-optical axis photoelectric sensor stored in association with the position information in the multi-optical axis photoelectric sensor of the multi-axis photoelectric sensor unit. Reads the error information including, an abnormality notifying process for notifying the error information thus read out to the outside storing a program for the computer executes.

  According to this configuration, when the computer executes the abnormality information acquisition process, the error information including the abnormal part in the multi-optical axis photoelectric sensor is notified to the outside. It is possible to easily grasp the abnormal part of the axial photoelectric sensor, and it is possible to quickly cope with the abnormal operation of the multi-optical axis photoelectric sensor.

  According to the present invention, it is possible to quickly cope with an operation abnormality of a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting a plurality of types of abnormal states in series. An optical axis photoelectric sensor system, a multi-optical axis photoelectric sensor, an abnormality identification device, an abnormality identification method, and a storage medium can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1, the multi-optical axis photoelectric sensor system according to the present embodiment includes a multi-optical axis photoelectric sensor 1 and an abnormality identification device 2 that identifies an abnormality of the multi-optical axis photoelectric sensor 1. .

  The multi-optical axis photoelectric sensor 1 includes a light projector 10 and a light receiver 20 that are arranged to face each other, and a controller connected to the light projector 10 and the light receiver 20 via cables 10a and 20a connected to the light projector 10 and the light receiver 20, respectively. 30.

  The light projector 10 includes a plurality of light projecting units 11a to 11c connected in series as sensor units. A second light projecting unit 11b, which is a subunit, is connected to the upper part of the first light projecting unit 11a, which is the main unit. The third light projecting unit 11c, which is another subunit, is connected to the upper part of the second light projecting unit 11b. Each of the light projecting units 11a to 11c is configured to be detachable, and the number (number of connections) of the light projecting units 11a to 11c constituting the light projector 10 can be changed to 1 to 3 in the present embodiment. It has become. In each of the light projecting units 11a to 11c, four light projecting elements 12 each made of a light emitting diode (LED) are arranged in a line at equal intervals in the longitudinal direction (vertical direction in FIG. 1).

  The light receiver 20 is formed by connecting light receiving units 21a to 21c as a plurality of sensor units in series. A second light receiving unit 21b, which is a subunit, is connected to the upper part of the first light receiving unit 21a, which is the main unit. A third light receiving unit 21c, which is another subunit, is connected to the upper part of the second light receiving unit 21b. Each of the light receiving units 21a to 21c is configured to be detachable, and the number (number of connections) of the light receiving units 21a to 21c constituting the light receiver 20 can be changed to 1 to 3 in the present embodiment. It has become. In each of the light receiving units 21a to 21c, four light receiving elements 22 each made of a photodiode (PD) are arranged in a line at equal intervals in the longitudinal direction (vertical direction in FIG. 1).

  In each light projecting element 12 arranged in the projector 10 and each light receiving element 22 arranged in the light receiver 20, elements arranged in the same order in the vertical direction are mutually normal counterparts. In the present embodiment, the light projector 10 and the light receiver are arranged on the 12 optical axes L based on the sequential time-division light projection from the lower end side by the 12 light projecting elements 12 and the 12 light receiving elements 22. A detection area of a predetermined range is formed between the two. When the detected object enters the detection area and the light passing between the projector 10 and the light receiver 20 is blocked, a message to that effect is output to the controller 30.

  The controller 30 includes a CPU and the like, and comprehensively controls the multi-optical axis photoelectric sensor 1. The controller 30 outputs a start pulse signal to the projector 10 and the light receiver 20. The light projector 10 and the light receiver 20 start the operation of the light projecting element 12 or the light receiving element 22 based on the start pulse signal output from the controller 30. Further, the controller 30 outputs a clock pulse signal to the projector 10 and the light receiver 20. The light projector 10 and the light receiver 20 operate the light projecting element 12 or the light receiving element 22 based on the clock pulse signal output from the controller 30. In the present embodiment, the controller 30 generates the synchronization signal of the start pulse signal and the clock pulse signal and outputs the synchronization signal to the projector 10 and the light receiver 20. For example, the projector 10 (projection control circuit 14). ) Or the light receiver 20 (light reception control circuit 24) may generate a synchronization signal and output it to the other side. In this case, the light projector 10 and the light receiver 20 may be connected by a synchronization line so that the start pulse signal and the clock pulse signal are output from the light projector 10 or the light receiver 20.

  The first light projecting unit 11 a of the light projector 10 is provided with a light projecting control circuit 14 that controls the light projecting element 12. The light projection control circuit 14 is connected to the controller 30 and outputs a drive signal synchronized with the clock pulse signal output from the controller 30.

  Each of the light projecting units 11a to 11c includes four switch elements connected to the four light projecting elements 12 respectively arranged in the light projecting units 11a to 11c, and one shift register connected to the switch elements. Is provided. Each light projecting circuit 15 is electrically connected via an electrical connection (not shown) provided at the connection of each light projecting unit 11a to 11c. The light projecting circuit 15 of the first light projecting unit 11a is connected to the light projecting control circuit 14, and the light projecting circuits 15 of the light projecting units 11a to 11c are connected to the light projecting control circuit 14 of the first light projecting unit 11a. Electrically connected.

  When a drive signal for turning on a predetermined switch element is sequentially output from the light projecting control circuit 14, each light projecting circuit 15 operates based on the drive signal. For example, the light projecting element 12 on the lower end side of the projector 10 is used. The operation of sequentially outputting drive signals from the light source to the light projecting element 12 on the upper end side is repeated in a short cycle. Thereby, the light signal synchronized with the clock pulse signal is sequentially emitted from the light projecting element 12 on the lower end side of the light projector 10 in a time division manner.

  The first light receiving unit 21 a of the light receiver 20 is provided with a light receiving control circuit 24 that controls the light receiving element 22. The light reception control circuit 24 is connected to the controller 30 and outputs a drive signal synchronized with the clock pulse signal output from the controller 30.

  Each of the light receiving units 21a to 21c includes four switch elements connected to the four light receiving elements 22 arranged in each of the light receiving units 21a to 21c, and one shift register connected to the switch elements. A light receiving circuit 25 is provided. Each light receiving circuit 25 is electrically connected via an electrical connecting portion (not shown) provided at a connecting portion of each light receiving unit 21a to 21c. The light receiving circuit 25 of the first light receiving unit 21a is connected to the light receiving control circuit 24, and the light receiving circuits 25 of the light receiving units 21a to 21c are electrically connected to the light receiving control circuit 24 of the first light receiving unit 21a.

  When a drive signal for turning on a predetermined switch element is sequentially output from the light reception control circuit 24, each light reception circuit 25 operates based on the drive signal, for example, from the light reception element 22 on the lower end side of the light receiver 20 to the upper end. The operation of sequentially supplying a drive signal to the light receiving element 22 on the side is repeated in a short cycle. Each switch element is always in an off state, and the light reception signal of the light reception element 22 connected to the switch element turned on by the drive signal given from the light reception control circuit 24 is synchronized with the clock pulse signal to control the light reception. The circuits 24 are sequentially fetched. That is, the controller 30 is arranged in the same order as the light projecting elements 12 at the moment when the light projecting elements 12 of a predetermined order among the light projecting elements 12 arranged in the vertical direction project the optical signals. Only the switch element connected to the light receiving element 22 is turned on. Thereby, only when each light receiving element 22 receives the optical signal from the light projecting element 12 of the other party, the light receiving signal output from the light receiving element 22 is taken into the light receiving control circuit 24 and output to the controller 30. Is done.

  The controller 30 determines the presence / absence of a detection object entering the detection area based on the light reception signal output from each light receiving element 22, and outputs a detection signal D corresponding to the determination result to an external device (not shown) such as a processing machine. ). Note that the presence / absence of the detection target may be determined by the light reception control circuit 24 instead of the controller 30. In this case, the detection signal D may be directly output from the light reception control circuit 24 to the external device. The external device stops when the detection signal D is output, and is held in a safe state.

  In addition, error detection circuits 16 and 26 are provided in each of the light projecting units 11a to 11c and the light receiving units 21a to 21c. The error detection circuits 16 and 26 are connected to the light projecting circuit 15 provided in each light projecting unit 11a to 11c or the light receiving circuit 25 provided in each light receiving unit 21a to 21c, and each light projecting unit 11a to 11c. And an abnormality in the light receiving units 21a to 21c is detected.

  In addition, each of the light projecting units 11a to 11c and the light receiving units 21a to 21c is provided with one error indicator lamp 13 and 23 constituting an abnormality notifying unit. The error indicator lamps 13 and 23 display the abnormal state detected by the error detection circuits 16 and 26 according to the abnormal content (for example, “1” to “7”, “C”, “F”, etc.). (Digital display, blinking, etc.)

  More specifically, the error indicator lamps 13 and 23 of the present embodiment are composed of a 7-segment display. For example, the error detection circuit 16 connected to the light projecting circuit 15 indicates a system abnormality between the light projector 10 and the light receiver 20. When detected, “1” is displayed on the error indicator lamp 13, and when connection abnormality of the light projecting units 11 a to 11 c is detected, “2” is displayed on the error indicator lamp 13. Further, when the error detection circuit 16 connected to the light projecting circuit 15 detects a failure in the internal circuit (light projecting circuit 15), the error indicator lamp 13 displays “F”. Further, for example, when the error detection circuit 26 connected to the light receiving circuit 25 detects a system abnormality between the projector 10 and the light receiver 20, the error indicator lamp 23 displays “1”, and the light receiving units 21 a to 21 c are connected. When an abnormality is detected, “2” is displayed on the error indicator lamp 23. The error detection circuit 26 connected to the light receiving circuit 25 displays “F” on the error indicator lamp 23 when detecting a failure in the internal circuit (light receiving circuit 25).

  The abnormality identification device 2 includes a personal computer having a CPU, a RAM, and a ROM, and includes a control unit 41 that constitutes abnormality information acquisition means, abnormality notification means, connection unit number acquisition means, model selection means, and abnormality location display means. Yes. The control unit 41 executes a program for specifying an abnormality of the multi-optical axis photoelectric sensor 1 stored in the storage device 42 such as a hard disk. This program is provided by being stored in a portable storage medium M (see FIG. 1) such as a flexible disk or a CD-ROM.

  A display device 43 such as a liquid crystal display is connected to the control unit 41, and an image (an abnormality identification screen 50 (see FIG. 2) or a display based on the image data generated by the control unit 41 is displayed on the display device 43. A content input screen 60 (see FIG. 3) or the like is displayed.

  In addition, an input device 44 such as a keyboard and a mouse is connected to the control unit 41, and the display contents of the error indicator lamps 13 and 23 (abnormal information regarding the abnormal state) and the corresponding light projecting units 11 a to 11 c or light receiving units. The connection order (position information) of the units 21a to 21c can be input by an operator. The control unit 41 associates the display contents of the error indicator lamps 13 and 23 of the light projecting units 11a to 11c or the light receiving units 21a to 21c with the connection order of the corresponding light projecting units 11a to 11c or the light receiving units 21a to 21c. Acquire (abnormal information acquisition processing).

  The storage device 42 is provided with an error information storage unit 42a as error information storage means. In the error information storage unit 42a, the error information including the abnormal part in the multi-optical axis photoelectric sensor 1 includes the display contents of the error indicator lamps 13 and 23 and the connection order of the light projecting units 11a to 11c or the light receiving units 21a to 21c. Associated and stored. In the present embodiment, the error information storage unit 42 a stores error information including abnormal portions in the multi-optical axis photoelectric sensor 1 for each of the multiple types of multi-optical axis photoelectric sensors 1. It is stored for each type (for example, one that notifies the abnormality content by digital display and one that notifies by flashing). Further, in the present embodiment, the error information includes the cause of the abnormality in which each of the light projecting units 11a to 11c or the light receiving units 21a to 21c is in an abnormal state, and each of the light projecting units 11a to 11c or the light receiving units 21a to 21c. And countermeasures to resolve the abnormal state. The cause of the abnormality and the coping method are displayed in text. Moreover, the priority is set to the error information in the order effective for the operation abnormality of the multi-optical axis photoelectric sensor 1 (for example, the order in which the operation abnormality can be dealt with more quickly). The control unit 41 reads error information from the error information storage unit 42a based on the type of the multi-optical axis photoelectric sensor 1, the acquired display content, and the connection order, and notifies the read error information to the outside (abnormality notification). processing).

  More specifically, when the abnormality identification device 2 is activated and a program for identifying an abnormality of the multi-optical axis photoelectric sensor 1 is executed, the control unit 41 first displays image data for displaying the abnormality identification screen 50. Generate and output to the display device 43.

As shown in FIG. 2, a model name display field 51 is provided in the upper center portion of the abnormality specifying screen 50, and the type (model name) of the target multi-optical axis photoelectric sensor 1 is displayed. .
A setting button 52 constituting a model selection means is provided in the lower center portion of the abnormality identification screen 50, and one multi-optical axis photoelectric sensor 1 is selected from a plurality of types of the multi-optical axis photoelectric sensor 1. The model can be selected.

  In the center portion of the abnormality specifying screen 50, a connection state display unit 53 constituting an abnormality notification unit and an abnormal part display unit is provided. The connection state of the projector 10 is graphically displayed on the left part of the connection state display unit 53, and the connection state of the light receiver 20 is schematically displayed on the right part of the connection state display unit 53.

  At the lower left corner of the abnormality identification screen 50, a connected number selection unit 54 constituting connection unit number acquisition means is provided. The number-of-connections selection unit 54 of the present embodiment is provided with three unit number selection buttons labeled “series connection configuration 1 unit”, “series connection configuration 2 units”, and “series connection configuration 3 units”, respectively. ing. The control unit 41 causes the connection state display unit 53 to display images in which the number of light projecting units 11 a to 11 c and the light receiving units 21 a to 21 c corresponding to the selected unit number selection button are connected in series.

  On the both sides of the connection state display unit 53 on the abnormality identification screen 50, abnormal state input units 55a and 55b constituting abnormality information acquisition means are provided, and the display contents of the error display lamps 13 and 23 are projected by the operator. Input is possible for each of the units 11a to 11c and the light receiving units 21a to 21c.

  Specifically, the abnormal state input unit 55a on the left side of the connection state display unit 53 is provided with unit selection buttons respectively corresponding to the light projecting units 11a to 11c, and the abnormal state input unit on the right side of the connection state display unit 53. 55b is provided with unit selection buttons corresponding to the respective light receiving units 21a to 21c. When one unit selection button is operated (selected) by the operator, as shown in FIG. 3, the control unit 41 controls the light projecting units 11 a to 11 c or the light receiving units 21 a to 21 c corresponding to the unit selection button. The display content input screen 60 is displayed. The display content input screen 60 is provided with a display content input unit 61 corresponding to the display content (numbers or symbols) displayed on the error indicator lamps 13 and 23, and the operator can select the corresponding light projecting unit 11a. -11c or the input buttons corresponding to the display contents of the error indicator lamps 13, 23 of the light receiving units 21a-21c are operated (selected). That is, the control part 41 acquires the display content of the error indicator lamps 13 and 23 by the selective input by an operator. A cancel button 62 is provided in the lower right part of the display content input screen 60, and when the cancel button 62 is operated, the screen returns to the abnormality specifying screen 50.

  A confirmation button 56 is provided at the upper right end of the abnormality identification screen 50. Further, an error cause display unit 57a that constitutes an abnormality notification unit is provided on the lower right side of the connection state display unit 53, and a coping method display unit that constitutes the abnormality notification unit is provided below the error cause display unit 57a. 57b is provided. When the confirmation button 56 is operated, the control unit 41 acquires the display content input by the operator in association with the connection order of the light projecting units 11a to 11c or the light receiving units 21a to 21c. Then, the control unit 41 acquires error information from the error information storage unit 42a based on the type, display content, and connection order of the acquired multi-optical axis photoelectric sensor 1, and stores the error information in the external To inform.

  Specifically, based on the acquired error information, the control unit 41 flashes and notifies the portion corresponding to the abnormal part of the multi-optical axis photoelectric sensor 1 displayed on the connection state display unit 53. Further, the control unit 41 gives an error indicating the cause of the abnormality in which the multi-optical axis photoelectric sensor 1 including each of the light projecting units 11a to 11c or the light receiving units 21a to 21c in the abnormal state is in an abnormal state based on the acquired error information. It is displayed on the cause display part 57a. Further, the control unit 41 solves the abnormal state of the multi-optical axis photoelectric sensor 1 including each of the light projecting units 11a to 11c or the light receiving units 21a to 21c in an abnormal state based on the acquired error information. Is displayed on the coping method display unit 57b. On the left side of the confirmation button 56, a clear button 56a for canceling the input content is provided.

  A display switching unit 58 is provided on the lower left side of the connection status display unit 53. When a plurality of pieces of error information are acquired based on the input display content and connection order, the error information is set for each of the plurality of error information. Is notified in association with the priority set in (1). Specifically, the display switching unit 58 is provided with a cursor button. When the control unit 41 acquires a plurality of pieces of error information based on the input display content and connection order, the control unit 41 responds to the operation of the cursor button. Thus, the error information is switched and notified in descending order of priority. The display switching unit 58 displays a number corresponding to each error information so that the operator can obtain one error information from, for example, a correspondence table based on the number. It is also.

An end button 59 is provided at the lower right corner of the abnormality identification screen 50. When this end button 59 is operated, the control unit 41 ends this process.
In such a multi-optical axis photoelectric sensor system, when an abnormality of the multi-optical axis photoelectric sensor 1 is specified, the operator first operates the setting button 52 to select the type of the target multi-optical axis photoelectric sensor 1 ( In the present embodiment, the abnormality content is notified by digital display). In addition, the operator operates the number-of-connections selection unit 54 and inputs the number of connections of the light projecting units 11 a to 11 c and the light receiving units 21 a to 21 c in the target multi-optical axis photoelectric sensor 1. And an operator checks the display content of the error indicator lamps 13 and 23 provided in each light projection unit 11a-11c of the light projector 10, and operates the abnormal condition input parts 55a and 55b, and inputs the display content. . For example, when inputting the error content of the first light projecting unit 11a, the operator selects a unit selection button corresponding to the first light projecting unit 11a provided in the abnormal state input unit 55a on the left side of the abnormality specifying screen 50. Then, a display content input screen 60 as shown in FIG. 3 is displayed. On the display content input screen 60, six input buttons displayed as “None”, “1”, “2”, “7”, “c”, “other than the above” are displayed. When nothing is displayed on the error indicator lamp 13 provided in the first light projecting unit 11a, the operator operates the input button displayed as “Non-display”, and “1”, “2”, “ When any of “c” is displayed, the corresponding input button is operated. When “3” to “6” are displayed, the input button displayed as “other than the above” is operated. When the input button is operated on the display content input screen 60, the abnormality specifying screen 50 is displayed again. The operator selects unit selection buttons corresponding to the other light projecting units 11b and 11c, and sequentially inputs the display contents of all the error indicator lamps 13 provided in the light projector 10, and operates the confirmation button.

  Then, as shown in FIG. 4, the part corresponding to the abnormal part of the multi-optical axis photoelectric sensor 1 displayed on the connection state display part 53 of the abnormality specifying screen 50 blinks. In addition, the cause of abnormality in which each of the light projecting units 11a to 11c or the light receiving units 21a to 21c is in an abnormal state is displayed on the error cause display unit 57a of the abnormality specifying screen 50, and each light projecting unit is displayed on the coping method display unit 57b. The coping method for eliminating the abnormal state of 11a-11c or the light receiving units 21a-21c is displayed. Therefore, even when a plurality of light projecting units 11a to 11c or light receiving units 21a to 21c are connected, the operator can easily input the display contents of the error indicator lamps 13 and 23 to easily detect the multi-optical axis photoelectric sensor 1. It is possible to identify the abnormal part.

Next, the operational effects of the above embodiment will be described below.
(1) The abnormality specifying device 2 notifies the outside of error information including an abnormal part in the multi-optical axis photoelectric sensor 1. Therefore, even when the number of connections of the light projecting units 11a to 11c or the light receiving units 21a to 21c is increased, the operator can easily grasp the abnormal portion of the multi-optical axis photoelectric sensor 1 based on the error information. Thus, it is possible to quickly cope with an abnormal operation of the multi-optical axis photoelectric sensor 1.

  (2) The abnormality specifying device 2 notifies the outside of the error information including the cause of the abnormality in which the light projecting units 11a to 11c or the light receiving units 21a to 21c (multi-optical axis photoelectric sensor 1) in the abnormal state are in an abnormal state. To do. Therefore, the operator can easily grasp the cause of the abnormality of the light projecting units 11a to 11c or the light receiving units 21a to 21c based on the error information, and can quickly cope with the operation abnormality of the multi-optical axis photoelectric sensor 1. .

  (3) The abnormality specifying device 2 externally outputs error information including a coping method for eliminating the abnormal state of the light projecting units 11a to 11c or the light receiving units 21a to 21c (multi-optical axis photoelectric sensor 1) which is in an abnormal state. To inform. Therefore, the operator can directly grasp the handling method based on the error information, and can quickly cope with the abnormal operation of the multi-optical axis photoelectric sensor 1.

  (4) When the abnormality specifying device 2 acquires a plurality of error information based on the acquired display content and connection order, the error identification device 2 notifies the error information in association with the priority set for each of the plurality of error information. The operator can grasp the error information in association with the priority.

  (5) Since the abnormality specifying device 2 acquires display contents by selective input by an operator, it is easy for the operator to input display contents and input errors can be reduced.

  (6) The abnormality specifying device 2 prompts the operator to input the number of display contents corresponding to the number of connection of the light projecting units 11a to 11c or the light receiving units 21a to 21c, so that unnecessary input items are eliminated. Thus, it is possible to reduce the labor required for the operator's input. In addition, input errors by the operator can be reduced.

  (7) The abnormality specifying device 2 has a plurality of types of multi-optical axis photoelectric sensors 1 in order to notify the error information read out based on the type of the multi-optical axis photoelectric sensor 1 and the display contents and connection order. It becomes possible to respond quickly to abnormal operation of the multi-optical axis photoelectric sensor system, and versatility is improved.

  (8) Since the abnormal part is graphically displayed on the display device 43 of the abnormality identifying device 2, the operator can easily grasp the abnormal part, and the operation abnormality of the multi-optical axis photoelectric sensor system can be quickly detected. It can correspond to.

  (9) When the abnormality specifying device 2 acquires a plurality of error information based on the acquired display content and connection order, the operator is notified of the plurality of error information in order to switch and notify the plurality of error information. Error information can be accurately grasped.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the abnormality specifying device 2 is configured to detect abnormalities from the light projecting units 11a to 11c or the light receiving units 21a to 21c based on the detection of the abnormal states of the light projecting units 11a to 11c or the light receiving units 21a to 21c. The display content may be acquired based on the input of the detection signal. According to such a configuration, error information can be obtained without the operator inputting display content to the abnormality identification device 2. In this case, for example, the multi-optical axis photoelectric sensor 1 (controller 30) and the abnormality specifying device 2 (control unit 41) are connected by a communication line. The abnormality detection signal may be input to the abnormality identification device 2 (control unit 41) via the controller 30, and the abnormality identification device 2 (control unit 41) directly from the light projecting units 11a to 11c or the light receiving units 21a to 21c. ).

  In the above embodiment, the error cause display unit 57a for displaying the cause of the abnormality and the coping method display unit 57b for displaying the coping method are provided, but these may be omitted. Moreover, you may provide the abnormal content display part by which the abnormal content of the light projection units 11a-11c or the light receiving units 21a-21c (multi-optical axis photoelectric sensor 1) which is in an abnormal state is displayed in a text.

  In the above embodiment, when a plurality of error information is acquired based on the input display content and connection order, the plurality of error information is switched and notified. For example, all error information is displayed. You may display simultaneously.

  In the above embodiment, all the unit selection buttons respectively corresponding to the light projecting units 11a to 11c or the light receiving units 21a to 21c are provided in advance in the abnormal state input units 55a and 55b of the abnormality specifying screen 50. It is not limited to such an aspect. For example, first, a unit selection button corresponding to the first light projecting unit 11a is displayed, and after the display content is input by the operator, unit selection buttons corresponding to the second light projecting unit 11b and the third light projecting unit 11c sequentially. May be displayed, and the operator may be prompted to input display contents in an order corresponding to the connection order. Moreover, when the unit selection button corresponding to the light projector 10 (light projection unit 11a-11c) is operated, the unit selection button corresponding to the light receiver 20 (light reception unit 21a-21c) may not be displayed. According to such a configuration, it is possible to reduce erroneous input of display content by the operator.

  In the above embodiment, for example, when the display content of the first light projecting unit 11a is selectively input first, the display content not related to the display content input previously (display content that cannot occur at the same time) The selection may not be possible when the display content of the two light projecting unit 11b is input. According to such a configuration, it is possible to reduce an input error by the operator when the next display content is selected and input.

  In the above embodiment, the abnormality specifying screen 50 is provided with the connected number selection unit 54, but may be omitted. The abnormality specifying screen 50 is provided with a setting button 52 as a model selection means, but may be omitted. Moreover, in the said embodiment, although the connection status display part 53 is provided in the abnormality specific screen 50, you may abbreviate | omit.

  In the above embodiment, the abnormality identification device 2 as the abnormality identification device is provided, but the multi-optical axis photoelectric sensor 1 may have a function as the abnormality identification device. According to such a configuration, it is not necessary to provide the abnormality specifying device 2 specially. Further, if the main unit (the first light projecting unit 11a and the first light receiving unit 21a) is provided with a function as an abnormality identifying device, the sub units (the second and third light projecting units 11b and 11c, the second and the third light emitting units) are provided. Even when the light receiving units 21b and 21c) are changed or added, the abnormal portion of the multi-optical axis photoelectric sensor 1 can be easily grasped. In the above embodiment, the abnormality specifying device 2 is a personal computer in which a program for specifying an abnormality of the multi-optical axis photoelectric sensor 1 is stored in advance, but a dedicated abnormality specifying device may be used.

  In the above embodiment, the program for specifying an abnormality of the multi-optical axis photoelectric sensor 1 is provided by being stored in a portable storage medium M such as a flexible disk or a CD-ROM. It may be provided via a network.

  In the above embodiment, the multi-optical axis photoelectric sensor 1 is composed of a maximum of three light projecting units 11a to 11c or light receiving units 21a to 21c, but may be two, or four or more. May be. In the above embodiment, the light projecting units 11a to 11c and the light receiving units 21a to 21c are provided with four light projecting elements 12 or four light receiving elements 22, but the number thereof can be changed as appropriate. In the above embodiment, the controller 30 may be omitted. In this case, for example, the projector 10 and the light receiver 20 are connected by a synchronization line, and the start pulse signal and the clock pulse signal are generated by the projector 10 (light projection control circuit 14) or the light receiver 20 (light reception control circuit 24). For example, the light receiving control circuit 24 determines the presence or absence of a detection object that enters the detection area. Further, the sync line may be omitted and the light projector 10 and the light receiver 20 may be synchronized with light.

  In the above embodiment, the present invention is applied to the multi-optical axis photoelectric sensor 1 including the light projector 10 and the light receiver 20, but for example, a photoelectric sensor that detects both reflected light from the detected object and includes both the light projecting element and the light receiving element. The present invention can also be applied to cases where the above are connected in series.

The schematic block diagram of a multi-optical axis photoelectric sensor system. Explanatory drawing of an abnormality specific screen. Explanatory drawing of a display content input screen. Explanatory drawing of an abnormality specific screen.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Multi-optical axis photoelectric sensor, 2 ... Computer as an abnormality specific apparatus, 11a ... 1st light projection unit as a sensor unit and a main unit, 11b, 11c ... 2nd and 3rd light projection as a sensor unit and a subunit Unit, 21a: First light receiving unit as sensor unit and main unit, 21b, 21c: Second and third light receiving units as sensor unit and sub unit, 41: Abnormal information acquisition means, abnormality notification means, connection unit number acquisition Control unit constituting the means, model selection means and abnormality location display means, 42a ... error information storage portion as error information storage means, 52 ... setting button constituting model selection means, 53 ... abnormality notification means and abnormality location display means Connection state display unit constituting 54, constituting connection unit number obtaining means Continued number selection unit, 55a, 55b ... abnormal state input unit constituting abnormality information acquisition means, 57a ... error cause display part constituting abnormality notification means, 57b ... coping method display part constituting abnormality notification means, 58 ... abnormality A display switching unit constituting the notification means.

Claims (16)

A multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting an abnormal state of a plurality of types in series, and based on detection of an abnormal state of each of the multi-optical axis photoelectric sensor units A multi-optical axis photoelectric sensor system comprising an abnormality identification device that identifies abnormality of a multi-optical axis photoelectric sensor,
The abnormality specifying device is:
Associating error information including an abnormal portion in the multi-optical axis photoelectric sensor with abnormal information regarding the abnormal state of the multi-optical axis photoelectric sensor unit and positional information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor. Error information storage means for storing
Abnormality information acquisition means for acquiring abnormality information of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor;
Based on the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition unit, the error information corresponding to the abnormality information and the position information is read from the error information storage unit and read out. The multi-optical axis photoelectric sensor system, further comprising: an abnormality notifying unit for notifying the error information to the outside. The multi-optical axis photoelectric sensor system according to claim 1,
The error information includes abnormal contents of the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in an abnormal state,
The abnormality notifying means notifies error information including the abnormality content, and is a multi-optical axis photoelectric sensor system. The multi-optical axis photoelectric sensor system according to claim 1 or 2,
The error information includes a cause of abnormality in which the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in an abnormal state is in an abnormal state,
The abnormality notifying means notifies error information including the cause of the abnormality, and is a multi-optical axis photoelectric sensor system. The multi-optical axis photoelectric sensor system according to any one of claims 1 to 3,
The error information includes a coping method for eliminating an abnormal state of the multi-optical axis photoelectric sensor including the multi-optical axis photoelectric sensor unit in an abnormal state,
The multi-optical axis photoelectric sensor system, wherein the abnormality notifying means notifies error information including the coping method. The multi-optical axis photoelectric sensor system according to any one of claims 1 to 4,
When the abnormality notification unit acquires a plurality of the error information based on the abnormality information and the position information acquired by the abnormality information acquisition unit, the error notification unit associates the error information with a priority set for each error information. And a multi-optical axis photoelectric sensor system. In the multi-optical axis photoelectric sensor system according to any one of claims 1 to 5,
The anomaly information acquisition unit prompts an operator to input the anomaly information in an order corresponding to a connection order of the plurality of the multi-optical axis photoelectric sensor units. The multi-optical axis photoelectric sensor system according to any one of claims 1 to 6,
The multi-optical axis photoelectric sensor system characterized in that the abnormality information acquisition means acquires the abnormality information by selective input by an operator. The multi-optical axis photoelectric sensor system according to claim 7,
The abnormality information acquisition means includes
Abnormal information for each of the multi-optical axis photoelectric sensor units, which is selectively acquired from the plurality of abnormal information respectively corresponding to the plurality of types of own abnormal states, is acquired for each of the plurality of multi-optical axis photoelectric sensor units. Is,
Based on the abnormality information in the multi-optical axis photoelectric sensor unit that is selectively input first, the abnormality information in the multi-optical axis photoelectric sensor unit that is selectively input next is selectively selected first. The multi-optical axis photoelectric sensor system, wherein abnormal information not related to the abnormal information in the input multi-optical axis photoelectric sensor unit cannot be selected. In the multi-optical axis photoelectric sensor system according to any one of claims 1 to 5,
The abnormality information acquisition means acquires the abnormality information based on an input of an abnormality detection signal from each of the multi-optical axis photoelectric sensor units based on detection of an abnormal state of each of the multi-optical axis photoelectric sensor units. Multi-optical axis photoelectric sensor system. The multi-optical axis photoelectric sensor system according to any one of claims 1 to 9,
A connection unit number obtaining means for obtaining the number of connections of the multi-optical axis photoelectric sensor units connected in series;
The anomaly information acquisition means prompts an operator to input the anomaly information in a number corresponding to the number of connections of the multi-optical axis photoelectric sensor units. The multi-optical axis photoelectric sensor system according to any one of claims 1 to 10,
Comprising a model selection means for selecting one model of the multi-optical axis photoelectric sensor from a plurality of types of the multi-optical axis photoelectric sensor;
The error information storage means stores error information including an abnormal portion in the multi-optical axis photoelectric sensor for each of the multi-optical axis photoelectric sensors of the plurality of types of models,
The abnormality notification unit is based on the model of the multi-optical axis photoelectric sensor acquired by the model selection unit and the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition unit. A multi-optical axis photoelectric sensor system, wherein the error information is read from the error information storage means, and the read error information is notified to the outside. The multi-optical axis photoelectric sensor system according to any one of claims 1 to 11,
The multi-optical axis photoelectric sensor system, wherein the abnormality notifying unit includes an abnormal point display unit that graphically displays the abnormal point. A multi-optical axis photoelectric sensor composed of a plurality of multi-optical axis photoelectric sensor units capable of detecting a plurality of types of abnormal states connected in series,
Associating error information including an abnormal portion in the multi-optical axis photoelectric sensor with abnormal information regarding the abnormal state of the multi-optical axis photoelectric sensor unit and positional information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor. Error information storage means for storing
Abnormality information acquisition means for acquiring abnormality information of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor;
Based on the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition unit, the error information corresponding to the abnormality information and the position information is read from the error information storage unit and read out. A multi-optical axis photoelectric sensor comprising an abnormality notifying unit for notifying the error information to the outside. An abnormality identification device for identifying an abnormality of a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting an abnormal state of a plurality of types in series,
Associating error information including an abnormal portion in the multi-optical axis photoelectric sensor with abnormal information regarding the abnormal state of the multi-optical axis photoelectric sensor unit and positional information of the multi-optical axis photoelectric sensor unit in the multi-optical axis photoelectric sensor. Error information storage means for storing
Abnormality information acquisition means for acquiring abnormality information of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor;
Based on the abnormality information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormality information acquisition unit, the error information corresponding to the abnormality information and the position information is read from the error information storage unit and read out. And an abnormality notifying means for notifying the error information to the outside. An abnormality identification method for identifying an abnormality in a multi-optical axis photoelectric sensor configured by connecting a plurality of multi-optical axis photoelectric sensor units capable of detecting an abnormal state of a plurality of types in series,
Abnormal information acquisition step of acquiring abnormal information related to the abnormal state of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor of the multi-optical axis photoelectric sensor unit;
Based on the abnormal information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormal information acquisition means, the abnormal information on the abnormal state of the multi-optical axis photoelectric sensor unit and the multi-optical axis photoelectric sensor unit An error notifying step of reading error information including an abnormal portion in the multi-optical axis photoelectric sensor stored in association with position information in the multi-optical axis photoelectric sensor, and notifying the read out error information to the outside. An abnormality identification method characterized by the above. A storage medium storing a program for identifying an abnormality of a multi-optical axis photoelectric sensor configured by a plurality of multi-optical axis photoelectric sensor units connected in series, which is executed by a computer and capable of detecting a plurality of types of abnormal states. There,
Abnormal information acquisition processing for acquiring abnormal information related to the abnormal state of the multi-optical axis photoelectric sensor unit in association with position information in the multi-optical axis photoelectric sensor of the multi-optical axis photoelectric sensor unit;
Based on the abnormal information and the position information of the multi-optical axis photoelectric sensor unit acquired by the abnormal information acquisition means, the abnormal information on the abnormal state of the multi-optical axis photoelectric sensor unit and the multi-optical axis photoelectric sensor unit An abnormality notification process for reading error information including an abnormal part in the multi-optical axis photoelectric sensor stored in association with position information in the multi-optical axis photoelectric sensor and notifying the read out error information to the outside. A storage medium storing a program to be executed by the computer.

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