JPH1078806A - Programmable display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the necessary number of I/O units compact in spite of the number of objects to be controlled in a programmable display device. SOLUTION: An I/O unit 2 for inputting state data from an object to be controlled and/or outputting control data to the object to be controlled is attached to the back face of a programmable display 1 in which control data for an object to be controlled can be prepared according to an inputting operation, and the state of the object to be controlled can be displayed with an attaching tool 5. The I/O unit 2 is provided with a male connector 21 which can be connected with a female connector 13 provided on the back face of the programmable display 1 on the surface at the programmable display side, and a female connector 22 having the same connecting structure as the male connector 13 of the programmable display 1 at a position corresponding to the male connector 21 on the back face. Then, a second I/O unit 3 can be extended by using a second attaching tool 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention controls a plant or the like in a chemical factory to display the operating state of the controlled object, and controls the operation of the controlled object in response to an operator's command. The present invention relates to a programmable display device having a control function.

[0002]

2. Description of the Related Art Conventionally, as a system for displaying the operation state of a controlled object and controlling the operation of the controlled object, as shown in FIG. 4, a programmable display device (6) mainly having a display function, and There is known a programmable display system in which a programmable controller (7) having a control function is connected to each other by a cable (9). The programmable display device (6) has a transparent touch panel attached to a screen of a liquid crystal display, so that data can be input and an image can be displayed. On the other hand, the programmable controller (7) is generally called a sequencer or PLC, and has a CPU unit (8).
And one or a plurality of I / O units (81) and (82) according to the number of controlled objects, and each I / O unit (81)
(82) is connected to each control target, so that state data can be input from each control target and control data can be output to each control target. The programmable controller (7) has a predetermined number of unit mounting portions (83) in advance.
Are formed, and an additional I / O unit can be added by using the remaining unit mounting portion (83).

The programmable display (6) creates control data in response to a data input operation, and the control data is controlled by the CPU unit (8) to control each I / O unit (81) (82). Is output to each control object through As a result, the operation of each control target is controlled. or,
The state data obtained from each control target is input to the programmable display (6) via each I / O unit (81) (82) of the programmable controller (7), whereby the screen of the programmable display (6) is displayed. Indicates the operation state of each control target.

[0004]

However, in the conventional programmable controller (7), if a large number of unit mounting portions (83) are provided, the entire device becomes large and when the number of controlled objects is small, a plurality of units are required. Unit mounting section (8
3) is left behind, and the installation space is wasted.
Conversely, if the number of unit mounting portions (83) is designed to be small, the number of unit mounting portions (83) becomes insufficient when the number of controlled objects increases.

An object of the present invention is to provide a programmable display device in which a required number of I / O units can be installed compactly without generating useless space regardless of the number of objects to be controlled. .

[0006]

SUMMARY OF THE INVENTION A programmable display device according to the present invention is a programmable display device (1) capable of generating control data for a controlled object in accordance with an input operation and displaying a state of the controlled object. An I / O unit (2) for inputting status data from a control target and / or outputting control data to the control target is mounted on the back surface.
It is detachably attached by (5). I / O
The unit (2) has a male connector (21) connectable to a female connector (13) provided on the rear surface of the programmable display (1) on the front surface of the programmable display (1), and a back surface thereof. Has a female connector (22) having the same connection structure as the female connector (13) of the programmable display (1) at a position corresponding to the male connector (21).

In the above-mentioned programmable display device,
A first fixture (5) on the back of the programmable display (1)
By attaching the first I / O unit (2) by using the female connector (13) of the programmable display (1)
The male connector (21) of the I / O unit (2) fits into the
An electrical connection is made between the programmable display (1) and the I / O unit (2). Then, the first I / O unit (2)
The second I / O unit (3) is attached to the rear surface of the first I / O unit (2) using the second attachment (5), so that the second I / O unit (2) is connected to the female connector (22) of the first I / O unit (2). / O unit
The male connector (31) of (3) is fitted, and the programmable indicator (1) and the second I / O unit (2) are connected via the first I / O unit (2).
/ O unit (3) is electrically connected. Similarly, a third I / O unit is provided on the back of the second I / O unit (3).
The unit (4), the fourth I / O unit, the fifth I / O unit,... Can be sequentially mounted, and an unlimited number of I / O units according to the number of control targets can be added. Can be done.

In a specific configuration, an I / O unit (2)
One side is provided with connector means to be connected to the control object, and the other side is provided with display means for indicating the operation state of the I / O unit (2). According to the specific configuration, the programmable display (1)
In a state where the I / O unit (2) is attached to the device, the connection with the control target is possible by the connector means, and the operation state of the I / O unit (2) can be confirmed by the display means.

[0009] More specifically, a programmable display device
In (1), data input from I / O unit (2) and I / O unit
Input / output control means for controlling data output to the O unit (2) is provided. Therefore, the function of the CPU unit (8) of the conventional programmable controller (7) is
The function of the I / O unit (81) of the conventional programmable controller (7) is realized by the I / O unit (2) while being realized by the input / output control means. By itself, a function equivalent to the combination of the conventional programmable display (6) and the programmable controller (7) can be obtained.

[0010]

According to the programmable display device of the present invention, the required number of I / O units according to the number of objects to be controlled can be stacked and mounted on the rear surface of the programmable display device. It is compact and does not create wasted space.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. The programmable display device according to the present invention comprises a front panel (11) as shown in FIG.
Display (1) consisting of a display and a display body (12)
A required number of I / O units (2) and (3) are mounted on the back of the device using a mounting device (5). When the number of controlled objects increases, the mounting device (5) is further used. Thus, the number of I / O units (4) can be increased. The front panel (11) of the programmable display (1) is configured by attaching a transparent touch panel to a screen of a liquid crystal display panel, and is capable of inputting data and displaying an image.

The programmable display (1) includes a plurality of tasks for controlling the programmable display, together with a plurality of tasks shown in FIG.
CPU of conventional programmable controller (7) shown in
The input / output control function to be performed by the unit (8) is set as one task, and the state of the control target can be displayed on the front panel (11).
The control data for the control target can be created according to the input operation of.

FIG. 3 shows an attachment structure of a programmable display (1) using a fixture (5) and a plurality of I / O units (2) and (3). The programmable display (1) is provided with a female connector (13) on the back of the display main body (12). Each of the I / O units (2) and (3) has a male connector (2) that can be connected to the female connector (13) of the programmable display (1) on the surface of the programmable display (1).
1) (31) and the male connector (2
At positions corresponding to (1) and (31), female connectors (22) and (32) having the same connection structure as the female connector (13) of the programmable display (1) are provided. The attachment (5) is formed in a rectangular frame according to the outer shape of the I / O units (2) and (3).

First, a first fixture (5) is fixed to the back of the programmable display (1) with a plurality of screws (51), and then a first I is attached to the fixture (5). The / O unit (2) is fixed with a plurality of screws (51). Thereby, the male connector (21) of the first I / O unit (2)
Is fitted into the female connector (13) of the programmable display (1), and the electrical connection between the programmable display (1) and the first I / O unit (2) is made.

Further, after fixing the second mounting member (5) to the back surface of the first I / O unit (2) with a plurality of screws (51), The second I / O unit (3) is fixed by a plurality of screws (51). Thereby, the male connector (31) of the second I / O unit (3)
Is fitted into the female connector (22) of the first I / O unit (2), and the first I / O unit (2) and the second I / O unit (3) are electrically connected. .

Each of the I / O units (2) and (3) has
LED panels (23) and (33) provided with a plurality of LEDs indicating an operation state are provided on one side as shown in FIG. 3, and input / output to be connected to each control target is provided on the other side as shown in FIG. Connectors (24) and (34) are provided. Therefore, I
Even when the I / O units (2) and (3) are mounted on the back of the programmable display (1), the LED panel (23)
(33) and the input / output connectors (24) and (34) are exposed to the outside, so that their functions are not impaired.

FIG. 2 shows an electrical connection state when the first and second I / O units (2) and (3) are attached to the programmable display (1). The multiple signal lines extending in parallel from (1)
By fitting the female connector (13) of the programmable display (1) and the male connector (21) of the first I / O unit (2), the inside of the first I / O unit (2) is extended in parallel. The plurality of signal lines are connected in series, and the plurality of signal lines are connected to the female connector (22) of the first I / O unit (2).
The connection between the I / O unit (3) and the male connector (31) of the second I / O unit (3) results in a serial connection with a plurality of signal lines extending in parallel in the I / O unit (3). One of the plurality of signal lines is for reading the identification data assigned to each I / O unit.

As described above, by attaching a plurality of I / O units (2) and (3) to the programmable display (1), the programmable display (1) and each I / O unit (2) are attached.
And (3) are electrically connected to each other. And, the programmable display (1) includes each I / O unit.
(2) The operating state of each controlled object is displayed based on the state data of each controlled object input from (3). The programmable display unit (1) creates control data for each control object in accordance with the operation of the front panel (11), and controls each I / O unit.
(2) The control data is output from (3) to each control target.

As described above, according to the programmable display device of the present invention, on the back of the programmable display (1),
The required number of I / O units (2) according to the number of objects to be controlled
(3) Since (4) can be mounted compactly, it is possible to cope with an increase in the number of controlled objects without any limitation. Even if the number of controlled objects is small, the installation space is wasted. There is no.

The description of the above embodiment is for the purpose of illustrating the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof.
In addition, the configuration of each part of the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made within the technical scope described in the claims. For example, I / O unit (2)
Male connector (21) (31) and female connector (22) (32) of (3)
Can be configured in a reverse male-female (irregularity) relationship to the above embodiment.

[Brief description of the drawings]

FIG. 1 is a perspective view of a programmable display device according to the present invention.

FIG. 2 is a block diagram illustrating an electrical connection state in the programmable display device.

FIG. 3 is an exploded perspective view of the programmable display device.

FIG. 4 is a diagram illustrating a configuration of a conventional programmable display device.

[Explanation of symbols]

 (1) Programmable display (11) Front panel (12) Display body (2) I / O unit (3) I / O unit (4) I / O unit (5) Fixture

Claims (3)

[Claims] 1. A programmable display device (1) capable of generating control data for a control target in accordance with an input operation and displaying a state of the control target, and inputting state data from the control target and / or Alternatively, an I / O unit (2) for outputting control data to a control target is provided with a fixture.
(5) Removably attached by I / O unit
(2) is a female connector (1) provided on the front surface of the programmable display (1) on the surface of the programmable display (1).
It has a male connector (21) that can be connected to 3), and the same connection structure as the female connector (13) of the programmable display (1) is provided on the back side at a position corresponding to the male connector (21). A second connector comprising a female connector (22) having
By using (5), the second I / O unit (3)
A programmable display device characterized in that it can be added. 2. One side of the I / O unit (2) includes:
2. The programmable display device according to claim 1, wherein connector means to be connected to a control target is provided, and display means for indicating an operation state of the I / O unit is provided on the other side surface. 3. The programmable display (1) has an I / O
Data input from unit (2) and I / O unit (2)
3. The programmable display device according to claim 1, further comprising input / output control means for controlling data output to the display device.