JPH0430799B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention mainly relates to the maintenance, inspection, testing, and other operations of automatically operated controlled equipment in the vicinity of the equipment (hereinafter referred to as the machine side). The present invention relates to a machine-side operation box that houses operation switches and the like for operating the machine.

[Background of the invention]

In the case of a plant such as a rolling plant, as shown in FIG.
etc. are controlled by control commands sent from a central control device 4 to which a computer or the like is applied, via a control device (not shown) provided for each device to be controlled. On the other hand, when maintaining, inspecting, or testing such devices to be controlled, a machine-side operation box 5 is installed on the machine side for each device to be controlled.
Control commands are then sent to the central control unit 4 via the signal line 6 and the multiplex signal transmitter 7.

Generally, as shown in FIG. 2, the machine-side operation box 5 includes a control element 8 such as a level setter or changeover switch that issues control commands, such as an on/off switch, a variable resistor, etc., and a control element 8 that controls the operation of the equipment to be controlled. , a display element 9 (hereinafter collectively referred to as a monitoring control element) for monitoring operating states such as stoppage and the like. In addition, a nameplate 10 corresponding to the monitoring and control elements 8 and 9 and displaying their functional contents;
A nameplate 11 that displays the identification code of the applicable controlled equipment is attached. Even if the functional configurations of the corresponding monitoring and control elements 8 and 9 are the same, the display contents of these nameplates are different due to their different functional configurations, such as "run, stop", "forward rotation, reverse rotation", etc.
The display contents are different, such as ``ascent, descent'', ``number of rotations'', or ``amount of displacement''.

Therefore, even if the functional configuration of the entire machine-side operation box is the same, there is no compatibility or versatility between them, and they must be manufactured in one-to-one correspondence for each device to be controlled. , it had the disadvantage of being complicated. In addition, the monitoring and control elements 8 and 9 are installed one-to-one on the machine side, and usually the machine side operation box is used extremely infrequently, and the installation environment is poor.
Malfunctions or malfunctions may occur due to contamination, etc. There is a drawback that inspection for such failures or defects cannot be easily carried out because the machine-side operation box 5 is fixedly connected to the control system.

[Purpose of the invention]

The purpose of the present invention is to provide portability for use by installing it on the machine side of controlled equipment as needed, to enable the functional configuration to be changed in accordance with the operation contents of test runs of multiple controlled equipment, and to provide a general-purpose It is an object of the present invention to provide a machine-side operation box that is easy to manufacture and easy to maintain and inspect.

[Summary of the invention]

The present invention is installed on the machine side of a plurality of devices to be controlled that are monitored and controlled by a central control device, and is operated in response to input of a control command that causes the devices to be controlled to operate on a trial basis. A machine-side operation box for test operation that monitors the operating state of the controlled device includes a signal transmitter connected to the signal line connected to the central control device via a detachable connector, and at least one monitor. The microprocessor includes a control element, a variable display section for displaying the functional contents of the supervisory control element, a setting device for setting and inputting an identification code of the device to be controlled, and a microprocessor. The identification code input from the setting device is sent to the central control unit via the signal transmitter, and the content of the monitoring and control operation of the controlled device is returned from the central control unit according to the identification code. storing supervisory control information in a memory, reading the supervisory control information from the memory, assigning a function to each of the supervisory control elements based on the information, and displaying the content of the function on the corresponding variable display section; By having a configuration in which the operating status of the monitoring control element is sent to the central control device, it can be installed on the side of the equipment to be controlled as needed, and can be used for test runs of multiple equipment to be controlled. The purpose is to make it possible to change the functional configuration in accordance with the operation contents, increase versatility, facilitate manufacturing, and facilitate maintenance and inspection.

[Embodiments of the invention]

Hereinafter, the present invention will be explained based on examples.

FIG. 3 shows an overall configuration diagram of an embodiment in which the present invention is applied to a rolling plant, and FIG. 4 shows a detailed configuration diagram of the main parts thereof.

As shown in these figures, the machine-side operation box 12 is detachably connected to a loop-shaped signal line 14 via a connector 13 disposed near the device to be controlled. The signal line 14 is connected to the central control unit 4 via a multiplex signal transmitter 6. The central control unit 4 is formed from an arithmetic processing section 4A and a memory 4B. This memory 4B stores the contents to be monitored and the contents of control operations for each device to be controlled. On the other hand, as shown in FIG. 4, the machine side operation box 12 includes a multiplex signal transmitter 15 connected to the connector 13, a selection receiving circuit 17 connected to the multiplex signal transmitter 15, and a control calculation section 18. ,
a microprocessor 1 comprising a memory 19;
6 and a setting device 20 connected to the control calculation section 18
, a plurality of control elements 8, a plurality of monitoring elements 9, and a display section 21 to which a variable display device such as a liquid crystal is applied, which are also connected to the control calculation section 18 via input/output circuits 22, 23, and 24, respectively. It is formed from.

The operation of the embodiment configured in this way will be described below.

The machine-side operation box 12 of this embodiment normally includes the transmission line 1
It has been removed from 4 and stored in a place with good surroundings. Then, it is installed on the side of the equipment to be controlled that undergoes maintenance, inspection, testing, etc. as necessary, and is connected to the signal line 14 via a nearby connector 13. Next, when the setting device 22 sets and inputs the identification code of the device to be controlled, the microprocessor 16 sends the identification code to the central control unit 4. When the central control unit 4 receives the identification code, it reads out the details of the monitoring and control operation of the controlled device corresponding to the identification code stored in the memory 4B, and sends it back to the machine-side operation box 12. The machine-side operation box 12 receives information sent from the central controller 4 via the multiplex signal transmitter 15, then receives information addressed to itself at the selection receiving circuit 17, and monitors it via the control calculation unit 18. and the operation contents are stored in the memory 19. At the same time, the control calculation section 18 allocates application functions to the control element 8 and the monitoring element 9, respectively, based on the contents in the memory 19. Further, based on the assigned functions, the contents are displayed on the display sections 21 at positions corresponding to the monitoring control elements 8 and 9.

In this way, the control element 8 or the monitoring element 9 having the same configuration is assigned a function according to the monitoring operation of the controlled device to which it is applied, and the corresponding display section 21 is displayed on the machine side accordingly. The usage name of the operation box 12, the usage functions such as the operation contents of the control elements, the display contents of the monitoring element 9, etc. are displayed in characters on the liquid crystal. Meanwhile, the operator
When the corresponding control element 8 is operated based on the operation content display, the control calculation unit 18 sequentially detects the state (on, off, level, etc.) of the control element 8 and sends the state signal to the central control unit 4. do. Based on the change in the state of the control element 8, the central control device 4 sends a control signal to the control device (not shown) of each device to be controlled, so that desired machine-side operations can be performed.

Therefore, according to this embodiment, the hardware configuration of the machine-side operation box 12 can be configured to be the same as the control target equipment without one-to-one correspondence, and the hardware configuration of the machine-side operation box 12 can be the same as that of the control target equipment during use. By simply installing it on the machine side and inputting the identification code of the device to be controlled, the functions of the machine-side operation box will correspond to the monitoring operation content of the device to be controlled.
This has the effect of significantly improving versatility. In addition, since they can have the same configuration, manufacturing is extremely easy, and depending on the probability that they will be used at the same time, there is no need to provide the same number of machine-side operation boxes as each device to be controlled. This has the effect of significantly reducing production quantity, etc.

Furthermore, since it can be stored in a clean environment during normal times, failures due to contamination of switches and the like are reduced, and maintenance and inspection can be performed extremely easily.

〔Effect of the invention〕

As explained above, according to the present invention, versatility is significantly improved and maintenance and inspection are extremely easy.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a conventional example, FIG. 2 is an external configuration diagram of a machine-side operation box of a conventional example, FIG. 3 is an overall configuration diagram of an embodiment to which the present invention is applied, and FIG. FIG. 2 is a detailed configuration diagram of main parts of the illustrated embodiment. 4...Central control unit, 8...Control element, 9...
Monitoring element, 12... machine side operation box, 13... connector, 14... signal line, 16... microprocessor, 20... setting device, 21... display section.

Claims (1)

[Claims] 1 A control object that is installed on the side of multiple controlled devices that are monitored and controlled by a central controller, and that is operated in response to a control command that inputs a control command that causes the controlled devices to operate on a trial basis. In the machine-side operation box for test runs that monitors the operating status of equipment,
a signal transmitter connected to a signal line connected to the central control device via a detachable connector;
The microprocessor is equipped with at least one supervisory control element, a variable display section for displaying the functional contents of the supervisory control element, a setting device for setting and inputting an identification code of the device to be controlled, and a microprocessor. The setter sends the identification code input from the setting device to the central control unit via the signal transmitter, and performs monitoring and control operations for the controlled equipment that are returned from the central control unit according to the identification code. The supervisory control information indicating the contents of is stored in a memory, the supervisory control information is read from this memory, a function is assigned to each of the supervisory control elements based on the information, and the function content is displayed on the corresponding variable display section. A machine-side operation box characterized in that it is configured to display the operating state of the monitoring control element and to send the operating state of the monitoring control element to the central control device.