JP4142762B2 - Control system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a control system.
[0002]
[Prior art]
  FIG. 8 is a block diagram of a conventional control system. In the figure, reference numeral 10 denotes a controller using a microcomputer or the like. In a conventional control system, a controlled device 30 such as an inverter or a damper is bidirectionally connected to the controller 10, and the controller 10 has an error log ERR for storing abnormality information of the controlled device 30. It is connected.
  The controller 10 includes a ROM for storing various programs 10P, a RAM for temporarily storing input information and the like, a CPU for calculating using information stored in the RAM based on the various programs 10P in the ROM, a command unit 10A, and receiving Part 10Z. The command unit 10A is for transmitting an operation request or a stop request to an external device, that is, the controlled device 30. The receiving unit 10Z receives a response from the controlled device 30 and gives this response to the various programs 10P. When the response is an abnormal signal, the receiving unit 10Z transmits the abnormal signal to the error log ERR as abnormal information. Is.
  The various programs 10P are programmed to issue an operation request to the command unit 10A and to issue a stop request to the command unit 10A based on a response from the reception unit 10Z.
  The controlled device 30 includes a command receiving unit 30A, a driving unit 30P, and an output unit 30Z. The command receiving unit 30A receives an operation request or a stop request from an external device, that is, the controller 10. The drive unit 30P is driven or stopped by an operation request or a stop request. The output unit 30Z is for transmitting a response to the controller 10.
  The drive of the drive unit 30P of the controlled device 30 is controlled by the operation request or the stop request transmitted from the command unit 10A of the controller 10 to the controlled device 30.
[0003]
  This control system operates as follows.
  When an operation request is transmitted from the various programs 10P of the controller 10, the operation request is transmitted to the command receiving unit 30A of the controlled apparatus 30 through the command unit 10A. The operation request is sent from the command receiving unit 30A to the drive unit 30P, and the drive unit 30P is driven by the operation request.
  If the drive unit 30P is operating normally, a normal response is transmitted from the output unit 30Z of the controlled device 30 to the controller 10.
[0004]
  If there is an abnormality in the drive unit 30P, the response becomes an abnormal signal, and this response is accumulated in the error log ERR as abnormality information.
  At the same time, a stop request is immediately sent to the command unit 10A by the various programs 10P. This stop request is transmitted to the command receiving unit 30A of the controlled apparatus 30 through the command unit 10A. The stop request is transmitted from the command receiving unit 30A to the drive unit 30P, and the drive unit 30P is stopped by the stop request.
[0005]
  As described above, when there is an abnormality in the controlled device 30, it is easy to identify the cause of the abnormality of the controlled device 30 by looking at the abnormality information accumulated in the error log ERR, and appropriate repairs and the like can be performed. It becomes possible.
[0006]
[Problems to be solved by the invention]
  However, when there is an abnormality in the controlled device 30, there is not always a response from the controlled device 30, and there is a problem that an abnormality of the controlled device 30 cannot be determined when there is no response.
[0007]
  Further, even when the control is optimal at the time of design, the control becomes obsolete as time passes and the environment around the controlled device 30 changes. For this reason, the request | requirement which adds new control or corrects the control at the time of design becomes strong. However, in order to satisfy the requirement, there is a problem that it takes a lot of labor and cost to change the control of the output of the controlled device 30 and to modify the controller 10.
[0008]
  In addition, if it is desired to control the drive unit 30P to be driven at 60% of the output at the initial stage of operation and the drive unit 30P to be driven at 100% of the output at the latter stage of operation, the controller 10 needs to be modified. . If the control is modified without remodeling the controller 10, whether it is 60% output driving in the initial operation period or 100% output driving in the later operation period, it is returned to the receiving unit 10Z of the controller 10. The response contains only information about whether it is normal or abnormal, and there is a problem that it is not possible to confirm whether the operation is actually performed according to the command.
[0009]
  Furthermore, in addition to controlling the controlled device 30 that has been used for a long time, it is necessary to modify the controller 10 when controlling a plurality of controlled devices 30α and the newly introduced controlled device 30β together. is there. When a new controlled device 30β is connected to the controller 10 without remodeling the controller 10, if one controlled device 30α is normal and the other controlled device 30β is abnormal, this response causes the controlled device 30α to be controlled. Alternatively, although it is found that an abnormality has occurred in one of the controlled devices 30β, there is a problem that it is impossible to identify which one of the controlled device 30α or the controlled device 30β is abnormal.
[0010]
  In view of such circumstances, the present invention can control the output of one or a plurality of controlled devices without modifying the controller, and can know the abnormality of the controlled device without a response from the controlled device. An object of the present invention is to provide a control system capable of easily changing the control of the output of the control device.
[0011]
[Means for Solving the Problems]
  The control system according to claim 1 includes a controller, a repeater bidirectionally connected to the controller, and a controlled device bidirectionally connected to the repeater.AndThe repeater includes:A control sequence for transmitting a control request to the controlled device based on a request to the controlled device transmitted from the controller, wherein the control sequence outputs an output of the controlled device at time t; It has a target output rate storage means for storing a target output rate W (t) shown as a ratio to the maximum output of the controlled device, and based on a request for the controlled device transmitted from the controller, The control request including the target output rate W (t) is transmitted to the controlled device.It is characterized by that.
[0012]
  The control system of claim 2 comprises:The invention according to claim 1, wherein the controlled device is configured to transmit a response to the control sequence as a response to the control request, and the controlled sequence is the controlled device to the control request. Response abnormality determining means for determining that the response is abnormal when the response is an abnormal signal, and determining whether there is a response to the control request after the control request is transmitted to the controlled device. Response presence / absence determination means for determining an abnormality when no response is received within a reference time, and the repeater determines that the response presence / absence determination means in the control sequence and the response abnormality determination means are abnormal. Response information determined to be abnormal, information that there is no response, and And a error log accumulatedIt is characterized by that.
  According to a third aspect of the present invention, the control system includes a plurality of the controlled devices according to the first or second aspect of the invention, and the target output rate storage means in the control sequence has a target output rate W1 for each controlled device. (T), W2 (t),..., Wn (t) are storedIt is characterized by that.
[0013]
  In the control system of claim 1,DuringIn the control sequence of the relay,EyeIn the standard output rate storage means, The output of the controlled device at time t is shown as a percentage of the maximum output of the controlled deviceThe target output rate W (t) is stored in advanceTherefore, when an operation request is transmitted from the controller, a control request for operating at the target output rate W (t) is transmitted from the control sequence to the controlled device,Controlled device that received the requestButDriving is performed with an output corresponding to the target output rate W (t).Therefore, it is possible to change the control of the output of the controlled device only by changing the target output rate W (t) without modifying the controller.
In the control system of claim 2, the response presence / absence judging meansIt is determined whether or not there is a response from the controlled device within the reference time. If there is no response, it is determined that there is an abnormality, and abnormality information indicating that there is no response is accumulated in the error log. If there is a response, LesThe response abnormality determination means determines whether or not the response is an abnormal signal. When the response is an abnormal signal, the response is determined to be abnormal. If the response is not an abnormal signal, the response is determined to be normal. Accumulated in the error log. Therefore, even if there is no response from the controlled device, the abnormality of the controlled device can be known by looking at the abnormality information accumulated in the error log.
[0014]
  In the control system according to the third aspect, since the target output rates W1 (t), W2 (t),..., Wn (t) in the plurality of controlled devices are stored in the target output rate storage means, Can be driven with an output corresponding to the target output rates W1 (t), W2 (t),..., Wn (t).Moreover, the control of the output of each controlled device can be changed without modifying the controller simply by changing the target output rates W1 (t), W2 (t),..., Wn (t) of each controlled device. be able to.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
  Next, an embodiment of the present invention will be described with reference to the drawings.
  FIG. 1 is a control block diagram of the control system of the first embodiment. In the figure, reference numeral 10 denotes a controller using a microcomputer or the like. In the control system of the first embodiment, the repeater 20S is bidirectionally connected to the controller 10, and a controlled device 30 such as an inverter or a damper is bidirectionally connected to the repeater 20S. An error log ERR for storing the abnormality information of the controlled device 30 is connected to the repeater 20S.
[0016]
  The controller 10 is substantially the same as the conventional controller 10 and is not modified. That is, the controller 10 includes a ROM for storing various programs 10P, a RAM for temporarily storing input information and the like, a CPU for calculating using information stored in the RAM based on the various programs 10P in the ROM, and a command unit 10A. And a receiving unit 10Z.
  The command unit 10A is for transmitting an operation request or a stop request to an external device.
  The receiving unit 10Z is for receiving a response from an external device and giving this response to the various programs 10P.
  The various programs 10P are programmed to issue an operation request to the command unit 10A and to issue a stop request to the command unit 10A based on a response from the reception unit 10Z.
[0017]
  The repeater 20S includes a command receiving unit 21, a command transmitting unit 22, a response receiving unit 23, a response output unit 24, and a control sequence 40S.
  The command receiving unit 21 receives an operation request or a stop request from the controller 10.
  The control sequence 40S issues a control request to the command transmission unit 22 based on the operation request or the stop request received by the command reception unit 21, and the details will be described later.
  The command transmission unit 22 transmits a control request from the control sequence 40S to the controlled device 30.
  The response receiver 23 receives a response from the controlled device 30 and gives this response to the control sequence 40S.
  The response output unit 24 receives the response from the control sequence 40S and returns this response to the controller 10 and, when the response is an abnormal signal, accumulates this response in the error log ERR as abnormal information.
[0018]
  The controlled device 30 includes a command receiving unit 30A, a driving unit 30P, and an output unit 30Z.
  The command receiving unit 30A receives a control request from the command transmitting unit 22 of the repeater 20S. The drive unit 30P is driven or stopped according to a control request. The output unit 30Z is for transmitting a response to the response receiving unit 23 of the repeater 20S.
  The drive of the drive unit 30P of the controlled apparatus 30 is controlled by the control request issued from the control sequence 40S of the repeater 20S.
[0019]
  Next, the control sequence 40S of the repeater 20S will be described.
  FIG. 2 is a functional block diagram of the control sequence 40S. As shown in the figure, the control sequence 40S stores reference time storage means 41, transmission time storage means 42, target output rate storage means 43, response presence / absence determination means 44, response abnormality determination means 45, and abnormality information storage means 46. ing.
  The reference time storage means 41 is a means for storing a reference time R that is a reference for the response time between the repeater 20S and the controlled device 30.
  The transmission time storage means 42 is means for storing the transmission time K at which the control request is transmitted from the repeater 20S to the controlled device 30.
  The target output rate storage unit 43 is a unit that stores a target output rate W (t) for a certain time t in the controlled apparatus 30. For this target output rate W (t), any function in any domain can be adopted as long as its range is 0 or more and 1 or less.
  The response presence / absence determination means 44 determines whether or not there is a response from the controlled device 30 within the reference time R after transmitting a control request to the controlled device 30, and determines that there is an abnormality if there is no response. It is means to do.
  The response abnormality determination unit 45 is a unit that determines whether or not the response is an abnormal signal, and determines that the response is abnormal when the response is an abnormal signal.
  The abnormality information accumulating means 46 is means for accumulating both the abnormality information determined to be abnormal by the response presence / absence determining means 44 and the abnormality information determined to be abnormal by the response abnormality determining means 45 in the error log ERR.
[0020]
  The control system of the first embodiment configured as described above operates as follows.
  FIG. 3 is a flowchart of the control sequence 40S or 40T. As shown in FIGS. 1-3, first, the response time between the repeater 20S and the controlled device 30 is stored in the reference time storage means 41 of the control sequence 40S of the repeater 20S by an input device such as a touch panel or a numeric keypad. A desired reference time R serving as a reference is stored in advance (1P). The reference time R may be determined based on a test.
[0021]
  Further, the target output storage means 43 of the control sequence 40S stores in advance the target output rate W (t) with respect to the time t in the controlled apparatus 30 (1P).
  FIG. 4 shows an example of the target output rate W (t), where the horizontal axis is time t and the vertical axis is the target output rate of the controlled device 30.
  As shown in the figure, this target output rate W (t) is
  W (t) = 0.6 (t₀≦ t <t₁)
  W (t) = 1.0 (t₁≦ t)
Is a function defined in.
  This target output rate W (t) is completely arbitrary as long as its value range is 0 or more and 1 or less. Therefore, the target output rate W (t) can be changed not only to stepwise control but also to continuously changing control. Only by changing t), the control of the output of the controlled device 30 can be easily changed without modifying the controller 10.
[0022]
  When an operation request is transmitted from the various programs 10P of the controller 10, the operation request is transmitted to the command receiving unit 21 of the repeater 20S through the command unit 10A. The operation request is sent from the command receiving unit 21 to the control sequence 40S.
  In the control sequence 40S, in response to this operation request, the target output rate W (t) stored in the target output storage means 43 is transmitted as a control request to the controlled device 30 through the command transmitter 22 of the repeater 20S. The At the same time, the transmission time K at which this control request is transmitted to the controlled device 30 is stored in the transmission time storage means 42 (2P).
[0023]
  In the controlled device 30 that has received the control request, the drive unit 30P is driven according to the target output rate W (t) at the time t. In the case of the target output rate W (t) shown in FIG.₀≦ t <t₁) So that the controlled device 30 is driven at an output of 60% and in the late operation (t₁≦ t), the controlled device 30 is controlled so that its output is driven at 100%.
[0024]
  As shown in FIGS. 1 to 3 again, since the target output rate W (t) is continuously transmitted as a control request from the control sequence 40S to the controlled device 30, the drive unit 30P of the controlled device 30 Drive continues according to the target output rate W (t) of t. Accordingly, when the change in the target output rate W (t) is positive, the output of the drive unit 30P increases, and when the change in the target output rate W (t) is negative, the output of the drive unit 30P decreases. If the value of the target output rate W (t) is 0, the drive unit 30P stops. If the value of the target output rate W (t) is 1, the drive unit 30P drives with all outputs. If the drive unit 30P is operating normally, a normal response is transmitted from the output unit 30Z of the controlled apparatus 30 to the repeater 20S.
[0025]
  On the other hand, in the control sequence 40S of the repeater 20S, the response presence / absence judgment means 44 controls the controlled time within the reference time R stored in the reference time storage means 41 from the transmission time K stored in the transmission time storage means 42. It is determined whether or not there is a response from the device 30 (3P). If there is no response, it is immediately judged as abnormal (6P), and abnormal information indicating that there is no response is accumulated in the error log ERR by the abnormality information storage means 46 (7P), and the controlled device 30 is requested to stop. Is sent (8P). As a result, the drive unit 30P of the controlled apparatus 30 stops.
[0026]
  If there is a response (3P), the response abnormality determination means 45 further determines whether or not the response is an abnormal signal (4P). If the response is not an abnormal signal, it is determined as normal (5P). If the response is an abnormal signal, it is determined to be abnormal (6P), and the response determined to be abnormal is stored in the error log ERR as abnormal information by the abnormality information storage means 46 (7P) and also to the controlled device 30. A stop request is sent (8P). As a result, the drive unit 30P of the controlled apparatus 30 stops.
[0027]
  As described above, the error log ERR stores both the abnormality information determined to be abnormal by the response presence / absence determination unit 44 and the abnormality information determined to be abnormal by the response abnormality determination unit 45. Therefore, if the abnormality information accumulated in the error log ERR is seen, even if there is no response from the controlled device 30, it is possible to know that an abnormality has occurred in the controlled device 30.
[0028]
  FIG. 5 is a control block diagram of the control system of the second embodiment. In the figure, reference numeral 10 denotes a controller using a microcomputer or the like. In the control system of the second embodiment, a repeater 20T is connected bidirectionally to the controller 10, and controlled devices 30α and 30β such as inverters and dampers are connected in parallel and bidirectionally to the repeater 20T. Has been.
  The number of controlled devices 30α and 30β connected to the repeater 20T in both directions is not limited to two but may be three or more.
[0029]
  The controller 10 is substantially the same as the conventional controller 10 and the controller 10 of the control system of the first embodiment, and is not modified. That is, the controller 10 includes a ROM for storing various programs 10P, a RAM for temporarily storing input information and the like, a CPU for calculating using information stored in the RAM based on the various programs 10P in the ROM, and a command unit 10A. And a receiving unit 10Z.
[0030]
  The repeater 20T includes a command receiving unit 21, a command transmitting unit 22, a response receiving unit 23, a response output unit 24, and a control sequence 40T.
  The command receiving unit 21 receives an operation request or a stop request from the controller 10.
  The control sequence 40T is for issuing a control request to the command transmission unit 22 based on the operation request or the stop request received by the command reception unit 21, and the details will be described later.
  The command transmission unit 22 transmits a control request from the control sequence 40T to the controlled devices 30α and 30β.
  The response receiving unit 23 receives responses from the controlled devices 30α and 30β and gives this response to the control sequence 40T.
  The response output unit 24 receives the response from the control sequence 40T, returns this response to the controller 10, and, if the response is an abnormal signal, accumulates this response in the error log ERR as abnormal information.
[0031]
  The controlled device 30α and the controlled device 30β are both substantially the same as the controlled device 30 of the first embodiment, and the controlled devices 30α and 30β are substantially the same as each other. Will be described as a representative.
  The controlled device 30α includes a command receiving unit 30A, a driving unit 30P, and an output unit 30Z. The command receiving unit 30A receives a control request from the command transmitting unit 22 of the repeater 20S. The drive unit 30P is driven or stopped according to a control request. The output unit 30Z is for transmitting a response to the response receiving unit 23 of the repeater 20S.
  The drive of the drive units 30P of the controlled devices 30α and 30β is controlled by the control request issued from the control sequence 40T of the repeater 20T.
[0032]
  Next, the control sequence 40T of the repeater 20T will be described.
  FIG. 6 is a functional block diagram of the control sequence 40T. As shown in the figure, the control sequence 40T stores reference time storage means 41, transmission time storage means 42, target output rate storage means 43, response presence / absence determination means 44, response abnormality determination means 45, and abnormality information storage means 46. ing.
  The reference time storage means 41 is a means for storing reference times Rα and Rβ that serve as references for response times between the repeater 20T and the controlled device 30α or 30β.
  The transmission time storage means 42 is means for storing the transmission times Kα and Kβ at which the control request is transmitted from the repeater 20T to the controlled devices 30α and 30β.
  The target output rate storage means 43 is means for storing target output rates Wα (t) and Wβ (t) with respect to the time t in the controlled device 30α or 30β. As for the target output rates Wα (t) and Wβ (t), any function in any domain can be adopted as long as the range is 0 or more and 1 or less.
  The response presence / absence judging means 44 judges whether or not there is a response from the controlled device 30α or 30β within the reference time Rα or Rβ after transmitting the control request to the controlled device 30α or 30β. It is a means to judge abnormal.
  The response abnormality determination unit 45 is a unit that determines whether or not the response is an abnormal signal, and determines that the response is abnormal when the response is an abnormal signal.
  The abnormality information accumulating unit 46 includes the abnormality information determined to be abnormal by the response presence / absence determination unit 44, the abnormality information determined to be abnormal by the response abnormality determination unit 45, and the name of the controlled device. Is a means of accumulating
[0033]
  The control system of the second embodiment configured as described above operates as follows.
  As shown in FIGS. 3, 5 and 6, first, the input device such as a touch panel or a numeric keypad is used to store the repeater 20T and the controlled device 30α or 30β in the reference time storage means 41 of the control sequence 40T of the repeater 20T. Desired reference times Rα and Rβ, which serve as references for the response time, are stored in advance (1P). The reference times Rα and Rβ may be determined based on tests.
[0034]
  Further, the target output rate storage means 43 of the control sequence 40T stores in advance target output rates Wα (t) and Wβ (t) for the time t in the controlled device 30α or 30β (1P).
  FIG. 7 shows an example of the target output rates Wα (t) and Wβ (t), where the horizontal axis is time t and the vertical axis is the target output rate of the controlled device 30. As shown in the figure, this target output rate Wα (t) is
  Wα (t) = 0.6 (t₀≦ t <t₁)
  Wα (t) = 1.0 (t₁≦ t)
This is a defined function.
  The target output rate Wβ (t) is
  Wβ (t) = 0.6 (t₁≦ t <t₂)
  Wβ (t) = 1.0 (t₂≦ t)
This is a defined function.
  Each target output rate Wα (t), Wβ (t) is completely arbitrary if its value range is 0 or more and 1 or less, so it can be changed not only to stepwise control but also to continuously changing control, There is an effect that it is possible to easily change the control of the controlled devices 30α and 30β without modifying the controller 10 only by changing the target output rate W (t).
[0035]
  When an operation request is issued from the various programs 10P of the controller 10, the operation request is transmitted to the command receiving unit 21 of the repeater 20T through the command unit 10A. The operation request is sent from the command receiving unit 21 to the control sequence 40T.
  In the control sequence 40T, according to this operation request, the target output rates Wα (t) and Wβ (t) stored in the target output rate storage means 43 are passed through the command transmission unit 22 of the repeater 20S as a control request. Transmitted to controlled devices 30α and 30β, respectively. At the same time, the transmission times Kα and Kβ at which these control requests are transmitted to the controlled devices 30α and 30β are stored in the transmission time storage means 42 (2P).
[0036]
  In the controlled devices 30α and 30β that have received the control request, the respective drive units 30P are driven according to the target output rates Wα (t) and Wβ (t) at the time t. In the case of the target output rates Wα (t) and Wβ (t) shown in FIG.₀≦ t <t₁), The controlled device 30α is controlled so that its output is driven at 60%. Next, period II (t₁≦ t <t₂), The controlled device 30α is controlled so that its output is driven at 100%, and the controlled device 30β is controlled so that its output is driven at 60%. Then period III (t₂≤t), both controlled devices α and 30β are controlled so that their outputs are driven at 100%.
[0037]
  As shown in FIGS. 3, 5 and 6 again, the target output rates Wα (t) and Wβ (t) are transmitted as control requests continuously from the control sequence 40T to the controlled devices 30α and 30β. The drive units 30P of 30α and 30β continue to drive according to the target output rates Wα (t) and Wβ (t) at the time t. Therefore, when the changes in the target output rates Wα (t) and Wβ (t) are positive, the output of the drive unit 30P of the controlled device 30α or 30β increases, and the target output rates Wα (t) and Wβ (t) When the change is negative, the output of the drive unit 30P of the controlled device 30α or 30β decreases. If the values of the target output rates Wα (t) and Wβ (t) are 0, the drive unit 30P stops. If the values of the target output rates Wα (t) and Wβ (t) are 1, the drive unit 30P is all Drive with output.
  Moreover, since the target output rates Wα (t) and Wβ (t) are independent from each other, they do not interfere with each other, and the target output rates Wα (t) and Wβ (t) corresponding to the controlled devices 30α and 30β Accordingly, the drive unit 30P is driven. If the drive unit 30P of the controlled devices 30α and 30β is operating normally, a normal response is transmitted from the output unit 30Z of the controlled device 30α or 30β to the repeater 20S.
[0038]
  On the other hand, in the control sequence 40T of the repeater 20T, the response presence / absence determination means 44 makes the transmission time Kα, Kβ stored in the transmission time storage means 42 within the reference times Hα, Hβ stored in the reference time storage means 41. Then, it is determined whether or not there is a response from the controlled devices 30α and 30β (3P). If there is no response, it is immediately judged as abnormal (6P), and the abnormal information indicating that there is no response and the name of the controlled device are stored in the error log ERR by the abnormal information storage means 46 (7P). Then, a stop request is sent to the controlled device 30 (8P). As a result, the drive unit 30P of the controlled device 30α or 30β stops.
[0039]
  If there is a response (3P), the response abnormality determination means 45 further determines whether or not the response is an abnormal signal (4P). If the response is not an abnormal signal, it is determined as normal (5P). If the response is an abnormal signal, it is determined as abnormal (6P), and the response determined as abnormal is stored in the error log ERR together with its controlled device name as abnormal information by the abnormal information storage means 46 (7P). . At the same time, a stop request is sent to the controlled device 30α or 30β (8P). As a result, the drive unit 30P of the controlled device 30α or 30β stops.
[0040]
  As described above, the error log ERR stores both the abnormality information determined to be abnormal by the response presence / absence determination unit 44, the abnormality information determined to be abnormal by the response abnormality determination unit 45, and the controlled device name. Has been. Therefore, when the abnormality information accumulated in the error log ERR is seen, it is possible to know which controlled device 30 has an abnormality even if there is no response from the controlled device 30.
[0041]
【The invention's effect】
  According to the control system of claim 1,In the repeater control sequence, the target output rate storage means stores in advance the target output rate W (t) indicating the output of the controlled device at the time t as a percentage of the maximum output of the controlled device. When the operation request is transmitted from the control sequence, a control request for operating at the target output rate W (t) is transmitted from the control sequence to the controlled device, and the controlled device that has received the control request has the target output rate W (t). Drive with the corresponding output. Therefore, it is possible to change the control of the output of the controlled device only by changing the target output rate W (t) without modifying the controller.
  According to the control system of claim 2,Whether or not there is a response from the controlled device within the reference time is determined by the response presence / absence determining means. If there is no response, it is determined that there is an abnormality, and abnormality information indicating that there is no response is accumulated in the error log. If there is a response, the response abnormality determination means determines whether or not the response is an abnormal signal. If the response is an abnormal signal, it is determined to be abnormal. The response is stored in the error log as abnormality information. Therefore, even if there is no response from the controlled device, the abnormality of the controlled device can be known by looking at the abnormality information accumulated in the error log.
  According to the control system of the third aspect, since the target output rates W1 (t), W2 (t),..., Wn (t) in the plurality of controlled devices are stored in the target output rate storage means. The control device can be driven with an output corresponding to the target output rates W1 (t), W2 (t),..., Wn (t). Moreover, target output rates W1 (t), W2 (t),..., Wn (t) of each controlled device It is possible to change the control of the output of each controlled device without modifying the controller simply by changing the controller.
[Brief description of the drawings]
FIG. 1 is a block diagram of a control system according to a first embodiment.
FIG. 2 is a functional block diagram of a control sequence 40S.
FIG. 3 is a flowchart of a control sequence 40S.
4 shows an example of a target output rate W (t), where the horizontal axis is time t and the vertical axis is the target output rate of the controlled device 30. FIG.
FIG. 5 is a block diagram of a control system according to a second embodiment.
FIG. 6 is a schematic diagram of time-series control of a control sequence 40T.
7 shows an example of target output rates Wα (t) and Wβ (t), where the horizontal axis is time t and the vertical axis is the target output rate of the controlled device 30. FIG.
FIG. 8 is a block diagram of a conventional control system.
[Explanation of symbols]
    10 Controller
    20S repeater
    20T repeater
    30 Controlled device
    30α controlled device
    30β controlled device
    40S control sequence
    40T control sequence
    41 Reference time storage means
    42 Transmission time storage means
    43 Target output rate storage means
    44 Response presence / absence judgment means
    45 Response abnormality judgment means
    46 Abnormal information storage means
    ERR error log

Claims (3)

Consists of a controller, and a relay connected bidirectionally to the controller, and the controlled equipment connected bidirectionally to the repeater,
In the repeater,
A control sequence for transmitting a control request to the controlled device based on a request for the controlled device transmitted from the controller;
The control sequence is
A target output rate storage means for storing a target output rate W (t) indicating the output of the controlled device at time t as a ratio to the maximum output of the controlled device;
The control characterized in that the control request including the target output rate W (t) is transmitted to the controlled device based on a request for the controlled device transmitted from the controller. system.   The controlled device is:
As a response to the control request, it is configured to send a response to the control sequence,
The control sequence is
A response abnormality determining means for determining a response of the controlled device to the control request, and determining that the response is abnormal when the response is an abnormal signal;
After the control request is transmitted to the controlled device, it is provided with response presence / absence determining means for determining whether or not there is a response to the control request, and determining that there is no response within a reference time. ,
The repeater is
When the response presence / absence determination means in the control sequence and the response abnormality determination means determine that there is an abnormality, an error log is provided in which information of a response determined to be abnormal and information that there is no response are accumulated. Have
The control system according to claim 1. A plurality of the controlled devices;
In the target output rate storage means in the control sequence,
Target output rates W1 (t), W2 (t),..., Wn (t) are stored for each controlled device.
The control system according to claim 1 or 2, characterized by the above.

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