JP2017041142A - Contact point input control device and contact point input control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that can improve the reliability of operation of a contact point input control device while reducing the implementation costs of the contact point input control device.SOLUTION: A contact point input control device 200 includes: a contact point input unit 210 into which an input signal is input from an external apparatus 100; and a control unit 230 that performs a process corresponding to the inputted input signal. The contact point input control device further includes a relay processing unit 220 that inputs the input signal input by the contact point input unit 210 into the control unit 230. The contact point input unit 210 includes: a main-system contact point input unit that inputs the input signal to the relay processing unit 220; and a sub-system contact point input unit that inputs the same input signal as input by the main-system contact point input unit into the relay processing unit 220. The relay processing unit 220 inputs the input signal input by the main-system contact point input unit into the control unit 230 when the main-system contact point input unit can communicate normally, and inputs the input signal input by the sub-system contact point input unit into the control unit 230 when the main-system contact point input unit cannot communicate normally.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a contact input control device and a contact input control program.

  The contact input control device executes a predetermined process when the contact input that has received the input signal inputs the received input signal to the corresponding control unit. For example, when an input signal related to fire alarm input is received from “contact input 1”, the control device of the contact input control device executes processing related to “fire alarm input” corresponding to “contact input 1”.

  However, when the contact input of the contact input control device fails, an input signal to the failed contact input is not transmitted to the control device thereafter. Then, the control device of the contact input control device cannot execute processing corresponding to the failed contact input. For example, when the “contact input 1” fails and the input signal to the “contact input 1” is not transmitted to the control device, the control device cannot execute the process related to “fire alarm input”.

  Japanese Patent Laid-Open No. 2012-56382 (Patent Document 1) states that “the N check signal and the R check signal output from the 1-system control unit and the 2-system control unit are switched by the external synchronization signal and output. Contact input from the conmon side of the input contact groups R1 to Rn is performed in a time-sharing manner by the N verification signal and the R verification signal output from the control unit and the 2-system control unit, and the number of input circuits and the number of input control lines are halved. In addition, when a fixed failure occurs in the N check signal and R check signal of the 1 system control unit and the 2 system control unit, the fixed failure is detected and the relay COR is operated and the check signal of the failed control unit is sent. A technique for improving the reliability of contact input by separating from a verification signal of a control unit of another system is disclosed.

JP 2012-56382 A

  In the technology disclosed in Patent Document 1, the reliability of the operation of the contact input control device can be improved by making the input circuit redundant and separating the failure part at the time of failure. However, the technique disclosed in Patent Document 1 has a problem that the mounting cost of the contact input control device increases because the input circuit is made redundant.

  An object of the present invention is to provide a technique that can improve the reliability of operation of a contact input control device while reducing the mounting cost of the contact input control device.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  A contact point input control device according to an embodiment of the present invention includes a contact point input unit that receives an input signal from an external device, and a contact point input control that includes a control unit that executes processing corresponding to the input signal that is input. The apparatus further includes a relay processing unit that inputs the input signal input from the contact input unit to the control unit. In addition, the contact input unit inputs a main system contact input unit that inputs the input signal to the relay processing unit, and the same input signal as the input signal that the main system contact input unit inputs to the relay processing unit. It functions as one of the sub system contact input parts to input. Further, the relay processing unit inputs the input signal input from the main system contact input unit to the control unit when the main system contact input unit can normally communicate, and the main system contact input unit When the communication cannot be normally performed, the input signal input from the sub system contact input unit is input to the control unit.

  A contact input control program according to an embodiment of the present invention is a contact input control program for causing a computer of a contact input control device to execute, and an input signal input from an external device to a main system contact input unit The computer is caused to execute a first input step of inputting to the relay processing unit. Further, the sub system contact input unit causes the computer to execute a second input step of inputting the same input signal as the input signal input by the main system contact input unit to the relay processing unit. The relay processing unit inputs the input signal input in the first input step to the control unit when the main system contact input unit can communicate normally, and the main system contact input unit When the communication cannot be normally performed, the computer is caused to execute a relaying step of inputting the input signal input in the second input step to the control unit.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to the representative embodiment of the present invention, it is possible to improve the reliability of the operation of the contact input control device while reducing the mounting cost of the contact input control device.

It is a figure which shows the outline | summary of the structural example of the security system in one embodiment of this invention. It is a figure which shows the outline | summary of the structural example of the setting file read by the relay process part of the contact input control apparatus in one embodiment of this invention. It is a figure which shows the outline | summary of the setting information stored in the register | resistor of the contact input control apparatus in one embodiment of this invention. It is a figure explaining the operation example of the contact input control apparatus in one embodiment of this invention. (A) shows an operation example when the main system contact input unit can normally communicate, and (b) shows an operation example when the main system contact input unit cannot communicate normally. It is a figure which shows the outline | summary of the initial setting process in one embodiment of this invention. It is a figure which shows the outline | summary of the abnormality detection process in one embodiment of this invention. It is a figure which shows the outline | summary of the contact input utilization availability determination process in one embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

<System configuration>
FIG. 1 is a diagram showing an outline of a configuration example of a security system 10 according to an embodiment of the present invention. As shown in FIG. 1, the security system 10 includes an external device 100 and a contact input control device 200.

  The external device 100 and the contact input control device 200 are implemented by predetermined hardware and software. For example, the external device 100 and the contact input control device 200 include a processor, a memory, and the like, and the program on the memory executed by the processor functions as the security system 10 as the computer of the external device 100 and the contact input control device 200 Let

  The external device 100 has a plurality of contact output units 110. The contact output unit 110 of the external device 100 periodically inputs an input signal to the contact input unit 210 of the contact input control device 200.

  One contact output unit 110 inputs the same input signal to a plurality of contact input units 210. For example, one contact output unit 110 outputs the same input signal to a main system contact input unit (originally a contact input unit that inputs an input signal to the control unit 230 via the relay processing unit 220). 210) and a sub system contact input unit (a contact input unit that inputs an input signal to the control unit 230 via the relay processing unit 220 instead when the main system contact input unit fails).

  The contact input control device 200 includes a plurality of contact input units 210. Further, the contact input unit 210 relays the main system contact input unit that inputs the input signal input from the external device 100 to the relay processing unit 220 or the same input signal as the input signal input by the main system contact input unit. It functions as either one of the sub system contact input units that input to the unit 220.

  The relay processing unit 220 of the contact input control device 200 is, for example, an FPGA control process that is software for controlling (FPGA (Field Programmable Gate Array)).

  The relay processing unit 220 of the contact input control device 200 reads a setting file (described later, FIG. 2) after the contact input control device 200 is activated. Also, the relay processing unit 220 stores the contents of the setting items of the read setting file in a register (described later, FIG. 3). Then, based on the contents of the setting items stored in the register, the relay processing unit 220 corresponds to the contact input unit 210 to which an input signal is input from the external device 100 and the control unit 230 that executes processing corresponding to the input signal. Determine the relationship.

  The relay processing unit 220 monitors whether the contact input unit can normally communicate by monitoring the communication speed of the input signal input by the contact input unit (main system contact input unit or sub system contact input unit) 210. judge. Then, the relay processing unit 220 stores a state value indicating whether or not the contact input unit can normally communicate in the register.

  The relay processing unit 220 determines whether the main system contact input unit can normally communicate based on the value of the state stored in the register. Then, when the main system contact input unit can communicate normally, the relay processing unit 220 inputs an input signal input from the main system contact input unit to the corresponding control unit 230 (processes the input signal). Further, when the main system contact input unit cannot communicate normally, the relay processing unit 220 inputs an input signal input from the sub system contact input unit to the corresponding control unit 230 (processes the input signal).

  The control unit 230 executes a corresponding process based on the input signal that is input. For example, the control unit 230 controls the external device 100 and a control target device (not shown) that is a device other than the external device 100 and the contact input control device 200 based on the input signal.

  As an example, when the external device 100 is a card reader, an input signal for blinking the LED of the card reader is input to the contact input unit 210 of the contact input control device 200. The contact input unit 210 inputs the input signal to the relay processing unit 220. Thereafter, the relay processing unit 220 of the contact input control device 200 inputs an input signal to the control unit 230 specified based on the setting file. Then, the control unit 230 to which the input signal is input causes the LED of the external device 100 to blink.

  As another example, when the external device 100 is a fire alarm device including a fire alarm sensor, an input signal indicating that fire alarm is detected is input to the contact input unit 210 of the contact input control device 200. . The contact input unit 210 inputs the input signal to the relay processing unit 220. Thereafter, the relay processing unit 220 of the contact input control device 200 inputs an input signal to the control unit 230 specified based on the setting file. Then, the control unit 230 to which the input signal is input inputs information indicating that there is a fire report to a fire information storage server that is a device other than the external device 100 or the contact input control device 200. Thereafter, the fire information storage server stores the input information.

<Setting file>
FIG. 2 is a diagram showing an outline of a configuration example of a setting file read by the relay processing unit 220 of the contact input control device 200 according to the embodiment of the present invention. As shown in FIG. 2, the setting file includes a contact input number for identifying the contact input unit 210, an item number assigned to the setting item, a setting item corresponding to the item number, and a setting value for the setting item. It consists of.

  The setting file includes setting items for each contact input number. The setting items include a physical contact number, a communication speed, an internal contact number, a main / sub system, a sub system compatible external communication number, and the like.

  The physical contact number indicates a port number for identifying a physical port of the contact input unit 210 of the contact input control device 200. Then, the relay processing unit 220 identifies the contact input unit 210 to which an input signal is input by referring to a physical contact number stored in a register (described later, FIG. 3). Note that the physical contact number and the contact input number may match.

  The communication speed indicates a communication speed when information is exchanged in the contact input control device 200. The relay processing unit 220 determines whether or not the contact input unit 210 can normally communicate by monitoring the communication speed stored in the register.

  The internal contact number indicates a number for identifying the control unit 230. The relay processing unit 220 can identify the input destination of the input signal input to the contact input unit 210 by referring to the internal identification number stored in the register.

  The main system / sub system indicates whether the contact input unit 210 is a main system contact input unit or a sub system contact input unit. When the set value is “0”, it indicates that the contact input unit 210 is a main system contact input unit. On the other hand, when the set value is “1”, it indicates that the contact input unit 210 is a sub system contact input unit. The relay processing unit 220 identifies whether the contact input unit 210 is the main system contact input unit or the sub system contact input unit by referring to the main system / sub system value stored in the register. .

  The sub system-compatible external communication number indicates the physical contact number of the sub system contact input unit that inputs an input signal to the control unit 230 instead of the failed main system contact input unit when the main system contact input unit fails. The relay processing unit 220 refers to the sub system-compatible external communication number stored in the register, and when the main system contact input unit fails, the relay processing unit 220 sends the input signal instead of the failed main system contact input unit. The contact input unit 210 to be input to 230 is specified.

<Register setting example>
FIG. 3 is a diagram showing an outline of setting information stored in the register of the contact input control device 200 according to the embodiment of the present invention.

  As shown in FIG. 3, the contents of each setting item for each contact input unit 210 are stored in the register. Setting items for one contact input unit 210 are stored in a register area within a predetermined range. Each register area is assigned a register area number (the register area number matches the contact input number).

  The state indicates whether or not the contact input unit 210 can normally communicate. When the value of the state is “0”, it indicates that the contact input unit 210 can normally communicate. On the other hand, when the value of the state is “1”, it indicates that the contact input unit 210 cannot communicate normally.

  The relay processing unit 220 of the contact input control device 200 reads the setting file, and stores the contents of the setting items for each contact input unit 210 in the order of item numbers. For example, for the contact input unit 210 with contact input numbers 1 to n, the relay processing unit 220 has a physical contact number corresponding to item number 1, a communication speed corresponding to item number 2, and an internal corresponding to item number 3. The contact number, the main / sub system corresponding to item number 4, and the sub system corresponding external communication number corresponding to item number 5 are stored in the register area corresponding to the item number in order. Further, the relay processing unit 220 determines whether or not the contact input unit 210 can normally communicate, and stores a state value based on the determined result in a corresponding register area.

<Operation example>
FIG. 4 is a diagram for explaining an operation example of the contact input control device 200 according to the embodiment of the present invention. 4A shows an operation example when the main system contact input unit 410 can normally communicate, and FIG. 4B shows an operation example when the main system contact input unit 410 cannot communicate normally. .

  As shown in FIG. 4A, the FPGA 460 includes the same input signal (LED) from the main system contact input unit (# 3 in the figure) 410 and the sub system contact input unit (# 2 in the figure) 420. Signal) is input.

  In the example shown in FIG. 4A, the main system contact input unit 410 can communicate normally. Therefore, the FPGA 460 does not input the input signal input from the sub system contact input unit 420 to the control unit 430 that controls the LED. On the other hand, the FPGA 460 inputs the input signal input from the main system contact input unit 410 to the control unit 430 that controls the LED.

  On the other hand, as shown in FIG. 4B, when the main system contact input unit 410 cannot communicate normally, the FPGA 460 does not normally input the input signal. The FPGA 460 inputs an input signal input from the sub system contact input unit 420 to the control unit 430 that controls the LEDs.

<Initial setting process>
FIG. 5 is a diagram showing an overview of the initial setting process according to the embodiment of the present invention. First, in S501, the OS (Operating System) of the contact input control device 200 is activated.

  Next, in S502, the relay processing unit 220 of the contact input control device 200 is activated. The relay processing unit 220 is automatically activated when the OS is activated.

  Next, in S503, the OS determines whether or not the relay processing unit 220 has been normally activated. When the OS determines that the relay processing unit 220 has not been normally activated (S503-No), the process proceeds to S509. On the other hand, when the OS determines that the relay processing unit 220 has been normally activated (S503-Yes), the process proceeds to S504.

  Next, in S504, the relay processing unit 220 reads the setting file (described above, FIG. 2).

  In step S <b> 505, the relay processing unit 220 determines whether the setting file has been successfully read. When the relay processing unit 220 determines that reading of the setting file has failed (S505-No), the process proceeds to S509. On the other hand, when the relay processing unit 220 determines that the setting file has been successfully read (S505-Yes), the process proceeds to S506.

  Next, in S506, the relay processing unit 220 stores the contents of the setting items of the setting file read in S505 in a register (described above, FIG. 3).

  In step S <b> 507, the relay processing unit 220 determines whether the setting item contents have been successfully stored in the register. When the relay processing unit 220 determines that storage in the register has failed (S507: No), the process proceeds to S509. On the other hand, when it is determined that the relay processing unit 220 has been successfully stored in the register (S507-Yes), the process proceeds to S508.

  In step S <b> 508, the contact input control device 200 starts an operation in the first mode in which the relay processing unit 220 relays the input signal to the control unit 230. Thereafter, the contact input control device 200 periodically performs an abnormality detection process (described later, FIG. 6).

  If NO in S503, S505, or S507, the contact input control device 200 starts an operation in the second mode in which the relay processing unit 220 does not relay the input signal to the control unit 230 in S509. .

<Abnormality detection processing>
FIG. 6 is a diagram showing an outline of the abnormality detection process in one embodiment of the present invention. First, in S <b> 601, the relay processing unit 220 selects a physical contact number of the contact input unit 210 that determines whether or not an abnormality has occurred, from the physical contact numbers of all the contact input units 210. Note that the relay processing unit 220 selects a physical contact number that has not been selected in S601.

  Next, in S602, the relay processing unit 220 receives input from the contact input unit 210 (the contact input unit 210 specified from the physical contact number selected in S601) to the relay processing unit 220 for a predetermined time. Aggregate the number of signals.

  Next, in S603, the relay processing unit 220 is identified from the contact input unit 210 (the physical contact number selected in S601) based on the number of input signals input during the predetermined time counted in S602. The communication speed of the contact input unit 210) is calculated.

  Next, in S604, the relay processing unit 220 acquires the communication speed stored in the register. The relay processing unit 220 refers to the register area corresponding to the physical contact number selected in S601, and acquires the communication speed stored in the referenced register area.

  Next, in S605, the relay processing unit 220 determines whether or not the contact input unit 210 (the contact input unit 210 specified from the physical contact number selected in S601) can normally communicate. When the relay processing unit 220 determines that the contact input unit 210 cannot communicate normally (S605-No), the process proceeds to S607. On the other hand, when the relay processing unit 220 determines that the contact input unit 210 can normally communicate (S605-Yes), the process proceeds to S606.

  The relay processing unit 220 determines that the contact input unit 210 cannot communicate normally when the communication speed calculated in S603 is not faster than the communication speed acquired from the register in S604. On the other hand, the relay processing unit 220 determines that the contact input unit 210 can normally communicate when the communication speed calculated in S603 is faster than the communication speed acquired from the register in S604.

  Next, in S606, the relay processing unit 220 stores “0” indicating that the state value is normal in the register area corresponding to the physical contact number selected in S601. After S606, the process proceeds to S608.

  If No in S605, in S607, the relay processing unit 220 stores “1” indicating that the state value is abnormal in the register area corresponding to the physical contact number selected in S601.

  In step S608, the relay processing unit 220 determines whether all physical contact numbers have been selected in step S601. When the relay processing unit 220 determines that all physical contact numbers have not been selected in S601 (S608-No), the process returns to S601. On the other hand, when the relay processing unit 220 determines that all physical contact numbers have been selected in S601 (S608-Yes), the abnormality detection process is terminated.

<Contact input availability judgment processing>
FIG. 7 is a diagram showing an overview of contact input availability determination processing in one embodiment of the present invention. The contact input availability determination process is executed every time an input signal is input from any contact output unit 110 of the external device 100 to any contact input unit 210 of the contact input control device 200.

  First, in step S <b> 701, the contact input unit 210 to which an input signal is input from the external device 100 inputs the physical contact number assigned to itself and the input signal to the relay processing unit 220.

  Next, in S702, the relay processing unit 220 acquires the value of the state of the contact input unit 210 corresponding to the physical contact number input in S701 from the register. The relay processing unit 220 refers to the register area corresponding to the physical contact number input in S701, and acquires the communication speed stored in the referenced register area.

  Next, in S703, the relay processing unit 220 determines whether the state value acquired in S702 is “1” indicating abnormality or “0” indicating normal. To do. In S703, when the relay processing unit 220 determines that the value of the state acquired in S702 is “0” indicating normal (S703-normal), the process proceeds to S712. On the other hand, in S703, when the relay processing unit 220 determines that the value of the state acquired in S702 is “1” indicating that it is abnormal (S703—abnormal), the process proceeds to S704.

  Next, in S704, the relay processing unit 220 acquires the main / sub system values of the contact input unit 210 corresponding to the physical contact number input in S701 from the register. The relay processing unit 220 refers to the register area corresponding to the physical contact number input in S701, and acquires the main / sub system values stored in the referenced register area.

  In step S <b> 705, the relay processing unit 220 determines whether the main / sub system value acquired in step S <b> 704 is “main system” or “sub system”. When the relay processing unit 220 determines that the value of the main / sub system acquired in S704 is “sub system” (S705-sub system), the contact input availability determination process ends. On the other hand, when the “main system” relay processing unit 220 determines that the main system / sub system value acquired in S704 is “main system” (S705-main system), the process proceeds to S706.

  Next, in S706, the relay processing unit 220 refers to the register area corresponding to the physical contact number input in S701, and refers to the sub system-compatible external communication number (sub system in the sub system) stored in the referred register area. The value of the physical contact number of the contact input unit 210 is acquired.

  Note that when there are a plurality of secondary contact input units 210, the relay processing unit 220 refers to the register area corresponding to the physical contact number input in S701, and stores all the information stored in the referenced register area. The sub system-compatible external communication number (physical contact number of the sub system contact input unit 210) is acquired.

  Next, in S707, the relay processing unit 220 checks the status value from all the sub system-compatible external communication numbers (physical contact numbers of the sub system contact input unit 210) acquired in S706. A sub system-compatible external communication number of the input unit 210 is selected. Note that the relay processing unit 220 selects a sub system-compatible external communication number that has not been selected in S707 so far.

  Next, in S708, the relay processing unit 220 refers to the register area corresponding to the sub system-compatible external communication number selected in S707, and acquires the value of the state stored in the referenced register area.

  Next, in S709, the relay processing unit 220 determines whether the value of the state acquired in S708 is “1” indicating abnormality or “0” indicating normal. To do. In S709, when the relay processing unit 220 determines that the value of the state acquired in S708 is “0” indicating normal (S709—normal), the process proceeds to S713. On the other hand, if it is determined in S709 that the relay processing unit 220 is “1” indicating that the value of the state acquired in S708 is abnormal (S709—abnormal), the process proceeds to S710.

  Next, in S710, the relay processing unit 220 determines whether or not all the sub system-compatible external communication numbers of the sub system contact input unit 210 have been selected in S707. When the relay processing unit 220 determines that all the sub system-compatible external communication numbers have not been selected (S710-No), the process returns to S707. On the other hand, when it is determined that the relay processing unit 220 has selected all the sub system-compatible external communication numbers (S710-Yes), the process proceeds to S711.

  Next, in S711, the relay processing unit 220 determines that a failure has occurred in the contact input control device 200, and ends the input signal relay destination determination process.

  If it is determined in S703 that it is normal, in S712, the relay processing unit 220 refers to the register area corresponding to the physical contact number input in S701, and stores the internal information stored in the referenced register area. Get contact number. Then, the relay processing unit 220 inputs the input signal input in S701 to the control unit 230 specified from the acquired internal contact number.

  In S712, the relay processing unit 220 refers to the register area corresponding to the physical contact number input in S701, and the main / sub system value stored in the referred register area is “main system”. It may be determined whether or not. In this case, the relay processing unit 220 controls the input signal input in S701 from the internal contact number acquired in S712 only when the main / sub system value is “main system”. 230.

  If it is determined in S709 that it is normal, in S713, the relay processing unit 220 refers to the register area corresponding to the sub system corresponding external communication number selected in S707, and is stored in the referenced register area. Get the internal contact number. Then, the relay processing unit 220 inputs the input signal input from the sub-system contact input unit 210 in S701 to the control unit 230 identified from the acquired internal contact number.

<Effects of the present embodiment>
According to the contact input control device 200 in the present embodiment described above, the relay processing unit 220 controls the input signal input from the main system contact input unit when the main system contact input unit can communicate normally. 230, when the main system contact input unit cannot communicate normally, an input signal input from the sub system contact input unit is input to the control unit 230, thereby reducing the mounting cost of the contact input control device. The reliability of the operation of the input control device is further improved. Further, it is possible to provide a contact input control device capable of reusing resources by making it possible to acquire an input signal from another contact input portion when the contact input unit fails.

  In addition, the relay processing unit 220 monitors the communication speed of the input signal input from the contact input unit, and determines whether the contact input unit can normally communicate, so that the contact input unit normally communicates. Whether or not it is possible can be detected quickly, and the operation reliability of the contact input control device can be further improved.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say. For example, each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a memory, a hard disk, a recording device such as an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

  Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown.

100 ... External device, 110 ... Contact output unit,
200 ... contact input control device, 210 ... contact input unit, 220 ... relay processing unit, 230 ... control unit.

Claims (3)

A contact point input control device having a contact point input unit to which an input signal is input from an external device, and a control unit that executes processing corresponding to the input signal to be input,
A relay processing unit that inputs the input signal input from the contact input unit to the control unit;
The contact input unit inputs a main system contact input unit that inputs the input signal to the relay processing unit, and inputs the same input signal as the input signal that the main system contact input unit inputs to the relay processing unit. Functions as one of the sub system contact input part,
The relay processing unit inputs the input signal input from the main system contact input unit to the control unit when the main system contact input unit can communicate normally, and the main system contact input unit is operated normally. When the communication cannot be performed, the input signal input from the sub system contact input unit is input to the control unit,
Contact input control device. The contact input control device according to claim 1,
The relay processing unit determines whether or not the contact input unit can normally communicate by monitoring a communication speed of the input signal input by the contact input unit.
Contact input control device. A contact input control program for causing a computer of a contact input control device to execute,
A first input step in which the main system contact input unit inputs an input signal input from an external device to the relay processing unit;
A second input step in which the sub system contact input unit inputs the same input signal as the input signal input by the main system contact input unit to the relay processing unit;
The relay processing unit inputs the input signal input in the first input step to the control unit when the main system contact input unit can communicate normally, and the main system contact input unit is operated normally. A relay step of inputting the input signal input in the second input step to the control unit when communication is impossible;
Is a contact input control program for causing the computer to execute.

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