JP5659840B2 - Control equipment for machinery - Google Patents

Description

  The present invention relates to a control device for mechanical equipment.

  A conventional machine equipment control device is configured using a programmable logic controller (PLC) as a device for electrically controlling the operation of machine equipment such as a rolling mill of a factory, for example, a steel mill. PLC systems are used. With recent advances in information technology, PLC systems are also developing in the direction of higher speed and higher capacity.

  With the development of this PLC system, it has become possible to consolidate control functions previously implemented by a plurality of PLCs into a single PLC. That is, in the past, one PLC was assigned to a mechanical facility that has one function, but it became possible to control a plurality of mechanical facilities with one PLC.

  By the way, when an abnormality occurs in a sensor, an actuator, or the like used for controlling the mechanical equipment, it is necessary to quickly stop the operation of the mechanical equipment related to the abnormality. In this case, in order to ensure the safety as much as possible, the execution of the control program in the PLC that controls the mechanical equipment in which the abnormality has occurred is stopped, and the control signal is transmitted from the PLC to the mechanical equipment. The control power supply needs to be opened (disconnected).

  In the past, since one PLC controlled a mechanical facility having one function, the functional unit of the mechanical facility was equal to the PLC unit. Therefore, when an abnormality occurs in a mechanical facility controlled by a certain PLC, the operation of the PLC that controls the mechanical facility is stopped and the control power supply related to the PLC is turned off. The PLC was stopped and the control power was turned off.

  In the field of information processing, an information processing system is intended to control the operation of a device by a program and to link the end of the control program and the power supply to the device to be controlled by the control program. Before starting up each of a plurality of programs that operate in the above, obtain information on the device used in the program in advance, turn on the power of the device to be used, and at the end of the program, the device used in the program Among them, one that cuts off the power of a device that is not used by another program is known (see, for example, Patent Document 1).

  Further, in an external expansion device controlled by a control program executed in the information processing apparatus (computer), the external program can be transmitted by transmitting a predetermined signal from the control program to the external expansion device when the control program starts and ends. A device that synchronizes power supply to an extension device is also known (for example, see Patent Document 2).

JP-A 63-053622 JP 2007-323410 A

  However, in a conventional machine equipment control device that consolidates control functions for a plurality of machine equipment in a single PLC, the PLC that controls the machine equipment responsible for a certain function also controls the machine equipment of other functions. ing. Therefore, there is a discrepancy between the functional unit of the machine facility and the PLC unit. For this reason, when the operation of the PLC that controls the machine facility in which an abnormality has occurred is stopped and the control power supply related to the PLC is cut off, the machine in which the abnormality controlled by the PLC has not occurred There is a problem that even the control of the facility is stopped.

  And if the control is stopped for the mechanical equipment outside the range where the abnormality occurs, there is a high possibility that the control power to the unexpected equipment that does not need to be stopped will be cut off / on, which is a safety issue. There is also a problem that there is a risk of occurrence.

  The present invention has been made to solve such a problem, and when an abnormality occurs in the mechanical equipment, it is possible to automatically stop the operation of only the mechanical equipment related to the abnormality. It is possible to obtain a control device for mechanical equipment that can improve the efficiency.

The control device for mechanical equipment according to the present invention is a control device for mechanical equipment that electrically controls the operation of a plurality of mechanical equipment provided for each of a plurality of functional units, and detects the state of the mechanical equipment. A plurality of equipment state detection means for outputting detection signals, a plurality of signal input means provided for each of the equipment state detection means and receiving the detection signals from the equipment state detection means, and the signal input means receiving And a control device main body having a plurality of control means realized by executing a plurality of machine software including programs for controlling the operation of each machine facility based on the detection signal, and a plurality of the machines A plurality of signal output means provided for each equipment for outputting a control signal from the control means to the machine equipment, and based on contents programmed in the machine software The mechanical soft should stop execution when an abnormal detection signal is input, an association table created by association means for associating to said signal input means to which the abnormal detection signal is inputted, the abnormality When the detection signal is inputted, the power supply for the signal output means of the mechanical equipment that is the control target of the machine software associated with the signal input means to which the abnormal detection signal is inputted. And a power supply release means for releasing the power.

  In the control device for mechanical equipment according to the present invention, when an abnormality occurs in the mechanical equipment, the operation of only the mechanical equipment related to the abnormality can be automatically stopped, and safety can be improved. There is an effect.

It is a figure explaining the whole structure of the control apparatus of the mechanical installation which concerns on Embodiment 1 of this invention. It is a figure explaining the whole structure of the control apparatus of the mechanical installation which concerns on Embodiment 2 of this invention. It is a figure explaining the whole structure of the control apparatus of the mechanical installation which concerns on Embodiment 3 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating the overall configuration of a control device for mechanical equipment according to Embodiment 1 of the present invention. In FIG. 1, reference numerals 1a to 1c denote a plurality of mechanical facilities provided for each functional unit. Here, it is assumed that there are three of the first mechanical equipment 1a, the second mechanical equipment 1b, and the third mechanical equipment 1c. The operations of the first machine facility 1a, the second machine facility 1b, and the third machine facility 1c are electrically controlled by the PLC 2.

  The PLC 2 includes a calculation unit, a storage unit, and an input / output unit (not shown). The arithmetic unit executes arithmetic processing according to the control program read from the storage unit. The storage unit stores in advance a control program for controlling each mechanical facility, and temporarily stores data that needs to be temporarily stored during execution of the control program. The input / output unit is a connection unit between the PLC 2 and the first communication network 3a, and the PLC 2 outputs the control signal calculated by the calculation unit to the first communication network 3a via the input / output unit. Or receiving an input of a signal necessary for control from the first communication network 3a or the like.

  The PLC 2 and the first mechanical equipment 1a, the second mechanical equipment 1b, and the third mechanical equipment 1c that are controlled by the PLC 2 are connected to be electrically communicable by the first communication network 3a. . The first communication network 3a is, for example, a control network IO Bus (Input / Output Bus) or LAN (Local) laid on the site of a factory or the like where the PLC 2 and the controlled machine facilities 1a to 1c are installed. (Area Network) and the like.

  The first communication network 3a and the machine facilities 1a to 1c are not directly connected but connected via the output device 4. The output device 4 has a plurality of IOs according to the machine facilities 1a to 1c. An interface IF is provided between the plurality of IOs and the first communication network 3a, and the output device 4 and the first communication network 3a exchange signals via the interface IF.

  That is, the first mechanical equipment 1a is connected to the first communication network 3a via the interface IF and the IO1 of the output device 4, and the second mechanical equipment 1b is connected to the first communication network 3a, the interface IF and the output. The third mechanical equipment 1c is connected to the first communication network 3a via the interface IF and the output device 4 IO3.

  Here, a configuration related to the exchange of signals between the PLC 2 side and the machine facilities 1a to 1c side via the output device 4 (and the interface IF) will be described. The exchange of signals through the output device 4 is performed between the circuit board of the output device 4, the input circuits of the machine equipments 1a to 1c, and the board circuit of these output devices 4 and the input circuits of the machine equipments 1a to 1c. This is performed via an interface circuit provided.

  Signal transmission between the substrate circuit and the interface circuit of the output device 4 is performed using, for example, a relay or a photocoupler, and these circuits are electrically disconnected. In addition, signal transmission between the interface circuit and the input circuits of the machine equipment 1a to 1c (particularly transmission of operation control signals of actuators of the machine equipment 1a to 1c) is also performed using, for example, a relay. Circuits are often electrically disconnected.

  As described above, the circuit on the output device 4 side and the machine equipment 1a to 1c side and the interface circuit exchange various control signals and sensor detection signals through the relays, the photocouplers, and the like while being electrically disconnected. It is configured as follows. This is to prevent an electronic device on the circuit from malfunctioning due to noise.

  As described above, the substrate circuit of the output device 4, the input circuits of the machine facilities 1a to 1c, and the interface circuit are electrically separated, so that power supplies for supplying power to the respective circuits are prepared separately. Has been. That is, power is supplied from the substrate power source to the substrate circuit of the output device 4, from the drive power source to the input circuits of the mechanical facilities 1a to 1c, and from the control power source to the interface circuit.

  The substrate power supply is a power supply for operation of a substrate circuit of the output device 4, that is, a semiconductor device or an electronic component inside the output device 4. These components are often low power operation type, and the substrate power source is a relatively low voltage. Specifically, it is supplied to the substrate circuit of the output device 4 as a voltage of about DC 5 V from a direct current stabilized power source. There is a case where a lower voltage is generated and used by a voltage regulator provided on the substrate circuit.

  The driving power source is a power source that supplies electric power for driving a power source such as an actuator, a solenoid, or a motor included in each of the mechanical facilities 1a to 1c. Since the electric power supplied from this driving power source is used as the power for driving the power source of each of the mechanical facilities 1a to 1c, this driving power source has a relatively high voltage three-phase alternating current (for example, about AC 200V to several thousand V). Often used.

  The control power supply is a power supply that supplies power for driving on / off the relays and photocouplers in the interface circuit. When the signal exchanged in the interface circuit is an analog signal (when the interface circuit is an analog circuit), this control power source becomes a voltage source / current source necessary for transmission of the analog signal. The control power supply uses a relatively high voltage such as DC12V to 48V · 100V or AC12 to 24V · 100V to 240V in order to enhance noise resistance. In the case of using a DC power supply, an insulation type is used.

  Each interface circuit of the output device 4 is provided with a control power switch 4a for turning on / off power supply from the control power supply to each interface circuit. Each control power switch 4 a is built in the output device 4. The operation of the control power switch 4a can be controlled by giving a control power on / off command signal to the output device 4 from the first communication network 3a. In other words, the output device 4 is configured to be able to operate the control power switch 4a incorporated therein in response to a control power on / off command signal from the first communication network 3a.

  From the machine facilities 1a to 1c, detection signals from sensors that detect the operation states of these machine facilities 1a to 1c, feedback signals from actuators that drive the operations of these machine facilities 1a to 1c, and the like are output. In FIG. 1, these signal transmission sources are represented by state detection units 5a to 5c. Specifically, signals from sensors and actuators provided in the first mechanical facility 1a are transmitted from the first state detection unit 5a. Signals from sensors and actuators provided in the second mechanical facility 1b are transmitted from the second state detection unit 5b. And the signal from the sensor and actuator provided in the 3rd machine installation 1c is transmitted from the 3rd state detection part 5c.

  These state detection units 5a to 5c are also electrically connected to the PLC 2 through the first communication network 3a. The first communication network 3a and the state detection units 5a to 5c are not directly connected but connected via the input device 6. The input device 6 has a plurality of IOs corresponding to the state detection units 5a to 5c. An interface IF is provided between the plurality of IOs and the first communication network 3a, and the input device 6 and the first communication network 3a exchange signals via the interface IF.

  That is, the first state detection unit 5a is connected to the first communication network 3a via the interface IF and the IO 4 of the input device 6, and the second state detection unit 5b is connected to the first communication network 3a and the interface IF. And the third state detection unit 5c is connected to the first communication network 3a via the interface IF and the IO 6 of the input device 6.

  As described above, a control program for controlling the operation of each of the machine facilities 1a to 1c is stored in the storage unit of the PLC 2 in advance. Specifically, the control program for controlling the operation of the first machine facility 1a is the first machine software 7a, and the control program for controlling the operation of the second machine facility 1b is the second machine software 7b. The control program for controlling the operation of the third machine facility 1c is the third machine software 7c.

  And in PLC2, the 1st machine software 7a is performed by the calculating part of PLC2, and the 1st control means which controls operation | movement of the 1st machine equipment 1a is comprised. Similarly, the second machine software 7b is executed by the computing unit of the PLC 2, thereby constituting a second control means for controlling the operation of the second machine facility 1b, and the third machine software 7c is connected to the PLC 2. The third control means for controlling the operation of the third mechanical facility 1c is configured by being executed by the arithmetic unit.

  The tasks in which the first machine software 7a, the second machine software 7b, and the third machine software 7c are executed in the PLC 2 are executed independently and in parallel. In other words, in these tasks, the execution state of one task does not affect the execution state of other tasks, unless there is a special circumstance such as linking the operations of multiple mechanical facilities. . Therefore, each task can be started / stopped individually.

  A setting terminal 8 is connected to the PLC 2 via a LAN that is the second communication network 3b. The setting terminal 8 includes machine software 7a to 7c that are duplicated in advance to store the machine software 7a to 7c in the storage unit of the PLC 2 via the second communication network 3b. Then, the setting terminal 8 analyzes the contents of the copied machine software 7a to 7c, associates each IO of the input device 6 with the machine software 7a to 7c, and stores the association table 9 as a result of the association. create.

  The association between each IO of the input device 6 and the machine software 7a to 7c is that which machine software 7a to 7c should be stopped when an abnormal signal from each IO of the input device 6 is input to the PLC 2. It prescribes. Each machine software 7a-7c prescribes | regulates the control content of each machine equipment 1a-1c, respectively. The control of the machine facilities 1a to 1c is performed based on various signals output from the state detection units 5a to 5c. Therefore, in each machine software 7a-7c, which state detection unit 5a-5c uses the signal output from the state detection unit 5a-5c to control the machine equipment 1a-1c that is the control target of each machine software, in other words, the input It is programmed in advance which IO of the device 6 is to use the input signal.

  The setting terminal 8 uses the signal output from the state detection units 5a to 5c in the machine software 7a to 7c for control (which IO of the input device 6 is used for control) Machine software 7a to 7c that uses signals input from the IO for each IO of the input device 6 to control the machine software that should stop execution when input from the abnormal signal from the IO Associate as. Then, this association is stored in the association table 9.

  Here, the signals output from the state detectors 5a to 5c include various sensor output signals and feedback signals. In these signals, the degree of influence when an abnormality occurs also varies. Therefore, some of these signals require that the operation of the mechanical equipment be stopped immediately when an abnormality occurs, while others do not. Therefore, in the setting terminal 8, when the user instructs the IO in the input device 6 of a signal that needs to stop the operation of the mechanical equipment when an abnormality occurs, the setting terminal 8 Only the machine software 7a to 7c is associated. In this way, it is possible to monitor abnormalities in highly important signals without monitoring all signals input from the input device 6, and to reduce the load on this monitoring.

  The setting terminal 8 does not necessarily have a dedicated terminal, and may be configured by executing software that realizes an association table creation function in a general-purpose computer. The setting terminal 8 may be provided with editing functions of the machine software 7a to 7c of the PLC 2 together.

  When an abnormal signal is input from the state detection units 5a to 5c to the PLC 2 via the input device 6, the PLC 2 refers to the association table 9 of the setting terminal 8, and if necessary, the machine software 7a Stop execution of ~ 7c. That is, when an abnormal signal is input from the input device 6, the PLC 2 stops the execution of the machine software 7 a to 7 c associated in the association table 9 with respect to the IO of the input device 6 of the abnormal signal. .

  Further, the PLC 2 is provided with an output open circuit 10. The output release circuit 10 outputs a control power supply release command signal to the output device 4. The control power supply release command signal includes information that specifies which control equipment of the interface circuit related to which mechanical equipment 1a to 1c is to be opened. And the input apparatus 6 will cut | disconnect the control power switch 4a of the interface circuit which concerns on the designated machine installations 1a-1c, and will open a control power supply, if this control power supply release command signal is received.

  In the control apparatus for machine equipment configured as described above, the PLC 2 executes the machine software 7a to 7c to output the IO of the input device 6 and the first communication network that are output from the state detection units 5a to 5c. Based on a signal input to the PLC 2 via 3a, a control signal for controlling the operation of each of the mechanical facilities 1a to 1c is calculated. This control signal is output from each IO of the output device 4 to each machine facility 1a to 1c via the first communication network 3a. And each machine equipment 1a-1c operate | moves according to this output control signal.

  When an abnormal signal is output from the state detection units 5a to 5c, the abnormal signal is input to the IO of the input device 6. The abnormal signal input to the IO of the input device 6 is input to the PLC 2 via the first communication network 3a. When the abnormal signal is input, the PLC 2 stops the execution of the machine software 7a to 7c associated in the association table 9 with respect to the IO of the input device 6 to which the abnormal signal is input.

  At the same time, the output release circuit 10 of the PLC 2 sends a control power supply release command signal to the output device 4 to release the control power supply of the interface circuit related to the machine equipment 1a to 1c that is the control target of the machine software 7a to 7c whose execution has been stopped. To send. This control power supply release command signal is received by the output device 4 via the first communication network 3a. Upon receiving the control power supply release command signal, the output device 4 disconnects the control power switch 4a of the interface circuit related to the mechanical facilities 1a to 1c specified by the control power supply release command signal, and opens the control power supply.

  As described above, in the PLC 2 having the plurality of machine softwares 7a to 7c for controlling the plurality of machine facilities 1a to 1c, the sensors and the like (state detection units 5a to 5c) of the respective machine facilities 1a to 1c. When an abnormality occurs in the signal, by referring to the association table 9, execution of the machine software 7a to 7c whose control target is the machine equipment 1a to 1c whose operation is controlled based on the signal is stopped. be able to. In addition, a control power supply release command signal is transmitted to the output device 4 from the output release circuit 10 of the PLC 2. And the control power supply of the interface circuit of the output apparatus 4 which mediated transmission of the control signal to the machine equipment 1a-1c which is the control object of the machine software 7a-7c whose execution has been stopped can be released.

  The machine equipment control apparatus configured as described above is provided in each of the state detection units, which are a plurality of equipment state detection means for detecting the state of the machine equipment and outputting a detection signal, and the equipment state detection means. A plurality of machines comprising an input device as a plurality of signal input means for receiving detection signals from the state detection means, and a program for controlling the operation of each machine facility based on the detection signals received by the signal input means A PLC, which is a main body of a control device having a plurality of control means realized by executing software, and a plurality of machines for outputting a control signal from the control means to the machine equipment for each of the plurality of machine equipments. Based on the output device that is the signal output means and the contents programmed in the machine software, the machine software that should be stopped when an abnormal detection signal is input is sent to the abnormal detection signal. Is associated with the signal input means to which the signal is input, and when an abnormal detection signal is input, the control object of the machine software associated with the signal input means to which the abnormal detection signal is input And an output opening circuit that is a power supply opening means for opening a power supply to a signal output means of a certain machine facility.

  For this reason, in a control device for mechanical equipment that electrically controls the operation of a plurality of mechanical equipment, it is possible to automatically stop the operation of only the mechanical equipment related to the abnormality when an abnormality occurs in the mechanical equipment. Yes, safety can be improved.

  Even if the program contents of the machine software that controls the operation of the machine equipment are changed, the association between the input source of the abnormal signal and the machine software to be stopped can be automatically updated, and the setting is required. The number of steps can be greatly reduced.

Embodiment 2. FIG.
FIG. 2 is a diagram for explaining the overall configuration of a control device for mechanical equipment according to Embodiment 2 of the present invention.
In the first embodiment described above, the setting terminal creates an association table that associates an input device (IO) to which a detection signal is input with machine software that performs a control signal calculation using the detection signal. It was configured as follows. On the other hand, in the second embodiment described here, the PLC has a function of creating an association table.

  That is, in FIG. 2, the setting terminal 8 connected to the PLC 2 by the second communication network 3b has an editing function of the machine software 7a to 7c of the PLC 2. Then, the user can designate the IO of the input device 6 to be associated with the machine software 7a from the setting terminal 8.

  The PLC 2 associates the machine software 7a to 7c with the IO of the input device 6 designated by the user in the setting terminal 8, and stores the result as an association table 9 in the storage unit of the PLC 2. A specific method of this association is the same as that performed at the setting terminal 8 of the first embodiment.

  That is, in each machine software 7a to 7c (analyzing which IO of the input device 6 is used for control, the IO of the input device 6 designated from the setting terminal 8 is analyzed for that IO. The machine software 7a to 7c used for the control of the signal input from is associated with the machine software whose execution is to be stopped when the abnormal signal is input from the IO, and this association is stored in the association table 9.

Then, when the abnormal signal is input to the PLC 2 from the state detection units 5a to 5c to the PLC 2 using the association table 9 created in this way, the PLC 2 inputs the abnormal signal. Execution of the machine software 7a to 7c associated in the association table 9 is stopped. At the same time, the output release circuit 10 of the PLC 2 outputs a control power supply release command signal for releasing the control power supply of the interface circuit related to the machine equipment 1a to 1c which is the control target of the machine software 7a to 7c whose execution has been stopped. 4, the control power switch 4a of the interface circuit related to the machine equipment 1a to 1c, which is the control target of the stopped machine software 7a to 7c, is disconnected, and the control power supply is opened.
Other configurations and operations are the same as those in the first embodiment, and detailed description thereof is omitted.

  The machine equipment control apparatus configured as described above can automatically create and update the association between the input source of the abnormal signal and the machine software to be stopped by using only the PLC.

Embodiment 3 FIG.
FIG. 3 is a diagram for explaining the overall configuration of a control device for mechanical equipment according to Embodiment 3 of the present invention.
In the second embodiment described above, the creation of an association table for associating an input device (IO) to which a detection signal is input with machine software that performs a control signal calculation using the detection signal, The control of the operation is performed in the same PLC. Is configured to be performed at the setting terminal. On the other hand, in the second embodiment described here, the PLC responsible for the function of creating the association table is provided separately from the PLC that controls the operation of each mechanical facility.

  That is, in FIG. 3, the associating PLC 2 a is used separately from the PLC 2. Similar to the PLC 2, the associating PLC 2a is connected to the machine facilities 1a to 1c and the state detectors 5a to 5c via the first communication network 3a. Further, the associating PLC 2a is also connected to the setting terminal 8 via the second communication network 3b.

The setting terminal 8 has editing / setting functions for the machine software 7a to 7c of the PLC 2. The same machine software 7a to 7c set by the setting terminal 8 is copied to the PLC 2 and the associating PLC 2a via the second communication network 3b.
Further, the user can designate the IO of the input device 6 to be associated with the machine software 7a from the setting terminal 8.

  The associating PLC 2a analyzes the contents of the machine software 7a to 7c copied to itself, and associates the machine software 7a to 7c with the IO of the input device 6 designated by the user in the setting terminal 8, The result is stored as the association table 9 in the storage unit of the associating PLC 2a. The specific method of this association is the same as that performed by the setting terminal 8 of the first embodiment and the PLC 2 of the first embodiment.

  In other words, each machine software 7a to 7c analyzes which IO of the input device 6 is used for control and analyzes each IO of the input device 6 designated by the setting terminal 8 from that IO. The machine software 7a-7c that uses the input signal for control is associated with the machine software whose execution should be stopped when an error signal is input from the IO. Then, this association is stored in the association table 9.

  The PLC 2 executes machine software 7a to 7c to control operations of the machine facilities 1a to 1c. In the third embodiment, the PLC 2 is used for operation control of the machine facilities 1a to 1c, and therefore the output opening circuit 10 is not provided.

When an abnormal signal is input from the state detection units 5a to 5c to the associating PLC 2a through the input device 6 using the generated association table 9, the associating PLC 2a uses the IO of the input device 6 of the abnormal signal. In contrast, the machine software 7a to 7c associated in the association table 9 is determined. Then, the output release circuit 10 of the associating PLC 2a provides the output device 4 with a control power supply release command signal for releasing the control power supply of the interface circuit related to the machine equipment 1a to 1c that is the control target of the determined machine software 7a to 7c. On the other hand, the control power switch 4a of the interface circuit related to the machine equipment 1a to 1c, which is the control target of the machine software 7a to 7c that has been transmitted and stopped, is disconnected, and the control power is released. In this way, operation | movement of the mechanical installation 1a-1c which abnormality generate | occur | produced can be stopped.
Other configurations and operations are the same as those in the first and second embodiments, and detailed description thereof is omitted.

  The mechanical equipment control apparatus configured as described above is provided with an associating PLC outside the PLC that controls the operation of the mechanical equipment, and the associating PLC is provided with an associating function and an output release circuit. Therefore, it is possible to ensure the stability of the control operation and improve the reliability of abnormality detection. Further, the associating PLC can be additionally installed later with respect to the existing PLC system, and it is possible to easily add an automatic abnormality detection function and an operation stop function when an abnormality is detected.

1a 1st mechanical equipment 1b 2nd mechanical equipment 1c 3rd mechanical equipment 2 PLC
2a PLC for association
3a 1st communication network 3b 2nd communication network 4 Output device 4a Control power switch 5a 1st state detection part 5b 2nd state detection part 5c 3rd state detection part 6 input device 7a 1st machine software 7b 2nd machine software 7c 3rd machine software 8 Setting terminal 9 Association table 10 Output release circuit

Claims (7)

A control device for mechanical equipment that electrically controls the operation of a plurality of mechanical equipment provided for a plurality of functional units,
A plurality of equipment state detecting means for detecting a state of the mechanical equipment and outputting a detection signal;
A plurality of signal input means provided for each of the equipment state detection means and receiving the detection signal from the equipment state detection means;
A control device main body having a plurality of control means realized by executing a plurality of machine software comprising programs for controlling the operation of each machine facility based on the detection signal received by the signal input means When,
A plurality of signal output means provided for each of the plurality of machine equipment, for outputting a control signal from the control means to the machine equipment;
Based on the contents programmed in the machine software, the machine software whose execution should be stopped when the abnormal detection signal is input to the signal input means to which the abnormal detection signal is input. An association table created by an association means,
When the abnormal detection signal is input, with respect to the signal output means of the mechanical equipment that is the control target of the mechanical software associated with the signal input means to which the abnormal detection signal is input A control device for mechanical equipment, comprising: a power release means for releasing power.   When the abnormal detection signal is input, the control device main body stops the execution of the associated machine software for the signal input unit to which the abnormal detection signal is input. The control device for mechanical equipment according to claim 1.   3. The power supply release means opens a control power supply that supplies electric power to an interface circuit that mediates signal transmission between the signal output means and the mechanical equipment. Machine equipment control equipment. The mechanical equipment control device according to any one of claims 1 to 3, further comprising an association designation unit that designates the signal input unit to be associated with the association unit. The association designation means is constituted by a general-purpose computer connected to the control device main body,
5. The machine facility control apparatus according to claim 4, wherein the association unit is provided in the association designation unit. The mechanical apparatus control device according to any one of claims 1 to 4, wherein the association unit is provided in the control device main body. The mechanical apparatus control device according to any one of claims 1 to 5, wherein the association unit and the power supply release unit are provided outside the control device main body.

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