JP2000020111A - Programmable control panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a programmable control panel capable of outputting many actuator driving signals with a small number of operation switches and unnecessitating the design of a sequence circuit. SOLUTION: The operation of one actuator and the end detection sensor of this actuator are stored in relation to one operation switch. If the end detection sensor of the actuator related to the operation switch detects the operation end at the time of depression of the operation switch (steps 120 and 130), a signal to drive the actuator toward the opposite operation end is outputted (steps 140 and 150). A pair of forcible switches to indicate both operation directions of the actuator are provided; and when a forcible switch is depressed (steps 100 and 110), the actuator related to the operation switch is operated in accordance with the indication of this forcible switch (steps 140 and 150).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programmable operation panel which detects both operation ends of a plurality of actuators by an end detection sensor and outputs a drive signal of the actuator in response to operation of an operation switch.

[0002]

2. Description of the Related Art A plurality of actuators are controlled according to a preset procedure by a control device such as a programmable logic controller. In addition, there are cases where a plurality of actuators need to be individually operated during maintenance or when an abnormality occurs. In such a case, conventionally, a programmable operation panel that outputs drive signals of a plurality of actuators according to operation of an operation switch has been used.

For example, a programmable operation panel is a CRT
And the like, a touch panel is provided on the display unit, and operation switches corresponding to a plurality of actuators, for example, as shown in FIG. , Chuck operation switch P
Operation switches such as B5 and an unchuck operation switch PB6 are provided. When there are many such operation switches, they are displayed by switching the window display.

On the other hand, the control device receives a drive signal of an actuator according to the operation of each operation switch from a programmable operation panel, and controls a plurality of actuators.
In such a control device, the output from the operation panel and the input to the control device have a one-to-one correspondence as shown in FIG.

In the control device, a sequence circuit is formed to control a plurality of actuators according to a preset procedure, and FIG. 8 shows a control circuit for controlling each actuator by an operation corresponding to an operation switch. A circuit corresponding to such a sequence circuit diagram is formed. The sequence circuit diagram is created each time according to a procedure set by a designer or the like having specialized knowledge.

When operating a plurality of actuators individually, the operator confirms the operating position of the actuator, and when the actuator is at the forward end, pushes the loader retreat operation switch PB2 to move the actuator forward. Operate to the edge. When the actuator is at the backward end, the loader advance operation switch P
B1 is pushed to move to the forward end.

[0007]

However, in such a conventional device, when the number of actuators is large, the number of operation switches is increased, and the number of windows is also increased.
If the operability deteriorates and the number of operation switches that can be displayed at one time is increased, there is a problem that the display unit becomes large.

When the number of actuators increases,
Accordingly, the sequence circuit becomes complicated, and the configuration of the sequence circuit is not easy. An object of the present invention is to provide a programmable operation panel that can output drive signals for many actuators with a small number of operation switches and does not require a sequence circuit design.

[0009]

In order to achieve the above object, the present invention takes the following means to solve the problem. That is, in a programmable operation panel that detects both operation ends of each of a plurality of actuators by an end detection sensor and outputs a drive signal of the plurality of actuators in accordance with operation of an operation switch, one actuator is provided for one operation switch. And the allocating means for storing the operation of the actuator and the end detection sensor of the actuator in association with each other, and the operation switch is pressed, and the end detection sensor of the actuator associated with the operation switch by the allocating means has an operation end. A programmable control panel is provided with condition control means for outputting a signal for driving the actuator in the opposite operation end direction when detecting.

In addition, a pair of forcible switches for instructing both operation directions of the actuator, and when the forcible switch is pressed, the assignment means associated with the operation switch by the allocating means regardless of the condition control means. Forcible control means for operating the actuator in accordance with the instruction of the forcible switch may be provided.

Alternatively, when the operation switch is kept depressed, a prevention means may be provided for preventing the repetitive operation of the actuator associated with the operation switch by the allocating means.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, reference numeral 1 denotes a controlled device. The controlled device 1 includes a table 4 on which a work 2 is placed, and the table 4 rotates a ball screw 8 driven by an actuator 6 using a motor. It is configured to reciprocate.

A forward end detecting sensor 10 using a limit switch for detecting the forward end of the table 4 and a backward end detecting sensor 12 using a limit switch for detecting the backward end of the table 4 are provided. Thus, a loader mechanism 14 for transporting the work 2 is configured.

When the work 2 is at the forward end, a chuck mechanism 16 for chucking the work 2 is provided, and an elevating mechanism 1 for moving the chuck mechanism 16 up and down.
8 are provided. The chuck mechanism 16 is a mechanism for chucking and uncucking the work 2 by an actuator using a cylinder (not shown).
And an unchuck end detection sensor for detecting an unchuck.

The elevating mechanism 18 is configured to elevate and lower the chuck mechanism 16 by an actuator 20 using a cylinder. The elevating mechanism 18 detects a descending end of the chuck mechanism 16 and a rising end of the chuck mechanism 16. A rising end detection sensor.

As shown in FIG. 2, the controlled device 1 is a control device 22 using a sequencer, a personal computer, or the like.
Is connected to the control target interface unit 24 of
The control device 22 outputs drive signals to the plurality of actuators 6 and 20 of the controlled device 1 via the control target interface unit 24 and inputs signals from the end detection sensors 10 and 12.

The arithmetic unit 26 of the control device 22 outputs output of drive signals to the plurality of actuators 6 and 20 in a preset procedure based on the signals from the end detection sensors 10 and 12, respectively. To the unit 24. The operation panel interface unit 28 of the control device 22 includes:
The control device 22 and the operation panel 30 are connected to the control device interface 32 of the operation panel 30, and exchange signals via the operation panel interface 28 and the control device interface 32.

As shown in FIG. 3, the operation panel 30 includes a display unit / touch panel unit 34 having a touch panel 34b affixed on a liquid crystal display unit 34a. Operation switches PB01 to 34A
PB03 is displayed, and a signal from the touch panel 34b is output to the touch panel control unit 38.

Thus, as shown in FIG. 3, a loader forward / backward operation switch PB01, a chuck down / up operation switch PB02, and a chuck / unchuck operation switch PB03 are configured. Each operation switch PB0
1 to PB03 are the plurality of actuators 6 and 2 described above.
0 respectively.

As shown in FIG. 3, the operation panel 30 further includes a pair of forced forward switch 40 and a forced return switch 4.
2 and both switches 40 and 42 are connected to a forced switch input unit 44. The operation panel 30
Is provided with an external device interface section 46 so that data and the like can be exchanged with an external input device 48. In the external input device 48, FIG.
Are made and input via the external device interface unit 46, and the assignment is stored in the storage unit 50.

As shown in FIG. 4, each operation switch PB0
The switch name, the control device output number, and the control device input number are stored in the storage unit 50 in association with 1 to PB03. The switch name includes each operation switch PB0
1 to PB03, operations of the actuators 6 and 20, "loader forward / backward", "chuck down / up",
"Chuck / Unchuck" is attached.

The control device output numbers are input to the operation panel 30 via the control device 22.
Are output numbers OUT01 to OUT06, for example, the output number OUT01 (upper) of the forward end detection sensor 10 and the backward end detection sensor 12 related to the actuator 6 that operates when the loader forward / backward operation switch PB01 is pressed. The output number OUT02 (lower) is associated.

The control device input number is the same as the control device 22.
Are input numbers IN01 to IN06 corresponding to the actuator 6 driven by the drive signal from. For example, the input number I corresponding to the forward movement of the actuator 6 that operates when the loader forward / backward operation switch PB01 is pressed.
N01 (upper row) and input number IN02 corresponding to retreat
(Lower).

Further, the operation panel 30 includes a calculation unit 52. The calculation unit 52 includes a touch panel control unit 38, a forced switch input unit 44, a control device interface unit 32, and signals from the external device interface unit 46 and a storage unit. 50
Control device 2 in accordance with the data and programs stored in
2 to output drive signals for the actuators 6 and 20.

Next, a control process performed in the calculation section 52 of the operation panel 30 will be described with reference to FIG. First, this control process is executed when any one of the operation switches PB01 to PB03 is pressed. For example, when the loader forward / backward operation switch PB01 is pressed,
It is determined whether the forced going switch 40 is pressed (step 100) or whether the forced return switch 42 is pressed (step 110).

When one of the buttons is pressed, for example, when the forcible switch 40 is pressed, the operation unit 52 determines from the assignment stored in the storage unit 50 shown in FIG. Is output (step 140). Also, forced return switch 4
When 2 is pressed, the arithmetic unit 52 outputs an ON signal to the input number IN02 for retracting the actuator 6 from the assignment shown in FIG. 4 stored in the storage unit 50 (step 150).

When neither of the forcible switches 40, 42 is pressed, it is determined whether or not the operating end is detected by the end detection sensors 10, 12 (output numbers OUT01, OUT02) (steps 120, 130). When the forward end detection sensor 10 (output number OUT01) is ON (step 120), an ON signal is output to the input number IN01 for moving the actuator 6 forward (step 140).

After outputting the ON signal to the input number IN01, the control waits until the backward end detection sensor 12 (output number OUT02) is turned on (step 160). IN01 is turned off (step 170).

On the other hand, the backward end detecting sensor 12 (output number O
If (UT02) is turned on, an ON signal is output to the input number IN02 for retreating the actuator 6 (step 150). Next, after outputting an ON signal to the input number IN02, the forward end detection sensor 10 (output number O
UT01) is turned on (step 18).
0), when the forward end detection sensor 10 is turned on, the input number IN02 is turned off (step 190). After executing the processing of steps 170 and 190, it is determined whether or not the loader forward / backward operation switch PB01 is pressed. Is determined (step 200). When the loader forward / backward operation switch PB01 is kept being pressed, the operation waits as it is to prevent the actuator 6 from being driven again, and when it is not pressed, the control process is ended once.

In this embodiment, the storage unit 50 constitutes an allocating unit, and the execution of the processing in steps 120 to 190 functions as a condition control unit.
The execution of the processes 0 and 150 functions as a forcible control unit, and the execution of the process of step 200 functions as a prevention unit.

As described above, the present invention is not limited to such an embodiment, and can be implemented in various modes without departing from the gist of the present invention.

[0032]

As described above in detail, the programmable operation panel of the present invention can control both operation directions of one actuator with one operation switch, and thus can output drive signals of many actuators with a small number of operation switches. In addition, since the actuator is controlled by the association, there is an effect that the design of the sequence circuit becomes unnecessary. Further, by providing the forced control means, a drive signal can be output to the actuator even when the actuator is not stopped at the operation end. Further, by providing the prevention means, it is possible to prevent the actuator from being repeatedly driven even when the operation switch is kept pressed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a controlled device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of an operation panel, a control device, and a controlled device as one embodiment of the present invention.

FIG. 3 is a configuration diagram of a display unit / touch panel unit of the operation panel according to the embodiment.

FIG. 4 is an explanatory diagram of allocation in the present embodiment.

FIG. 5 is a flowchart illustrating an example of a control process performed by a calculation unit according to the embodiment.

FIG. 6 is a configuration diagram of a display unit / touch panel unit of a conventional operation panel.

FIG. 7 is an explanatory diagram showing a relationship between a conventional operation panel output number and a control device input number.

FIG. 8 is a sequence circuit diagram of sequence control performed in a conventional control device.

[Explanation of symbols]

 2 Workpiece 4 Table 6 20 Actuator 10 Forward end detection sensor 12 Retreat end detection sensor 14 Loader mechanism 16 Chuck mechanism 18 Lifting mechanism 30 Operation panel 34 Display / touch panel 40 Forced go Switch 42: Forced return switch 50: Storage unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H219 CC03 CC09 EE05 GG01 HH02 HH25 HH28 5H220 BB01 BB11 CC03 CX06 GG03 GG04 JJ02 JJ12 JJ14 JJ26 JJ53

Claims (3)

[Claims] 1. A programmable operation panel for detecting both operation ends of each of a plurality of actuators by an end detection sensor and outputting drive signals of the plurality of actuators in response to operation of an operation switch, wherein one operation switch is An allocating unit that stores the operation of the two actuators and the end detection sensor of the actuator in association with each other; and the operation switch is pressed, and the end detection sensor of the actuator associated with the operation switch by the allocation unit is A programmable operation panel comprising: a condition control unit that outputs a signal for driving the actuator in an opposite operation end direction when an operation end is detected. 2. A pair of forcible switches for respectively instructing both operation directions of the actuator, and when the forcible switch is pressed, irrespective of the condition control means, the assignment means associated with the operation switch by the allocating means. 2. The programmable operation panel according to claim 1, further comprising forcible control means for operating an actuator in accordance with an instruction of the forcible switch. 3. The apparatus according to claim 1, further comprising a prevention unit configured to prevent a repetitive operation of the actuator associated with the operation switch by the allocation unit when the operation switch is continuously pressed. Item 2
The programmable operation panel described.