JPH0642243Y2 - Sequence controller - Google Patents

Description

[Technical field] The present invention displays a controller main body equipped with a sequence control circuit and having a terminal for connecting the sequence control circuit to a controlled device, and an input / output state of the sequence control circuit. The present invention relates to a sequence controller including a display device.

[Background Art] When a sequence controller is conventionally used, as shown in FIG. 6 and FIG.
There is provided a display lamp 6 for displaying an input / output state of a sequence control circuit installed in the controller body 1. Such an indicator lamp 6 is provided for the purpose of improving work efficiency during adjustment and maintenance. For example, if a signal is input to the input terminal,
The display corresponding to the input terminal is designed to light up. Therefore, if the display lamp 6 is used,
Although it becomes possible to monitor the controlled device connected to the terminal 2, since the controller body 1 is generally arranged in the monitoring panel or the control panel, the indicator lamp is displayed except during adjustment and maintenance. The display of 6 cannot be used. Therefore, the equipment designer selects the input / output signal necessary for monitoring the controlled device and responds to that signal,
A display lamp is provided separately from the display lamp 6 of the controller body 1 so as to be exposed to the outside of the control panel or the like. In this case, there is a problem that it is necessary to use another terminal 2 for the indicator lamp in addition to controlling the controlled device.

[Object of the Invention] The present invention has been made in view of the above points, and a first object of the present invention is to connect a display device without using a terminal for device control. Even if the display device is used as described above, it does not affect the connection of the controlled device, and the second purpose is to enable one display device to be shared by multiple controller bodies and display it. An object of the present invention is to provide a sequence controller that can be provided at low cost while using the device.

DISCLOSURE OF THE INVENTION (Structure) A sequence controller according to the present invention includes a controller main body equipped with a sequence control circuit and having a device control terminal for connecting a controlled device to the sequence control circuit,
And a display device capable of displaying the input / output state of the sequence control circuit, and the display device is detachably connectable in a form in which at least a part of the outer peripheral surface of the main body of the controller is opened and the display device is housed. When the display device is housed, a recess is formed so that the one surface of the controller body and the front surface of the display device are substantially aligned with each other, and a first connector for electrically connecting the display device to the sequence control circuit is arranged at the bottom of the recess. In addition, the display device is provided with a second connector which is detachably coupled to the first connector.

In the conventional configuration, the number of controllable devices that can be connected was reduced by connecting the display device to the device control terminal, whereas in the present invention, by adopting the above configuration, the connection of controlled devices It is possible to connect the display devices without affecting the available number. Also,
Since the display device is detachable from the controller body, the display device can be shared by a plurality of controller bodies. That is, by providing a plurality of controller main bodies in a state in which no display device is connected, and attaching and detaching the display device to and from each controller main body, the entire system can be compared to the case where the display devices are provided in all the controller main bodies. The cost of can be suppressed.

Further, when the controller main body is arranged inside the controlled device, if the display device is integrated with the controller main body, the display device cannot be visually recognized from the outside of the controlled device. The controller main body is connected via a connector, and if both connectors are connected via a cable with a connector, it is possible to easily arrange only the display device in a visible location.

Furthermore, when the display device is stored in the recess, one surface of the controller body and the front surface of the display device are substantially aligned with each other, so that when the display device is connected to the controller body without a cable, the display device is attached to the controller body. It has an integrated appearance and does not cause discomfort.

Moreover, at least a part of the display device can be detachably housed in a recess opened only on one surface of the controller body,
Since the first connector is provided at the bottom of the recess, the first connector is not exposed to the outside even when the display device is removed, and the appearance of the controller body does not change significantly.

Furthermore, since the display device can be detachably connected to the controller main body in a recess opened only on one surface of the controller main body, the first connector can be attached when the display device is connected to the controller main body. Not only the coupling force between the connector and the second connector, but also the display device is held by the recess, so that the mechanical coupling force of the display device to the controller body is large, and as a result, the electrical contact state by the connector is stable. To do.

(Embodiment 1) A sequence control circuit is installed in the controller body 1, and as shown in FIG. 1, a terminal 2 for inputting / outputting to / from the sequence control circuit is provided on the upper surface side portion of the controller body 1. Has been. On the upper surface of the controller body 1,
As shown in FIG. 2, the recess 7 is formed, and the recess 7
A connector 5 is arranged on the bottom surface of the. The connector 4 provided on the display device 3 is detachably coupled to the connector 5. That is, as shown in FIG. 3, the display device 3 is formed in a shape to be housed in the recess 7, the display lamp 6 such as a light emitting diode corresponding to each terminal 2 is exposed on the upper surface, and the display device 3 is formed on the lower surface. Is provided with a connector 4 which is coupled to the connector 5. However, when the connectors 4 and 5 of the controller body 1 and the display device 3 are male and femalely coupled, the display device 3 is mechanically coupled to the controller body 1 and the display lamp 6 corresponding to the sequence control circuit is electrically connected. Is connected to.

With the above configuration, when the display device 3 is mounted on the controller main body 1, the controller main body 1 is used in the same manner as the conventional one. Also, remove the display device 3 from the controller body 1 and connect the connectors 4,5
Since it is possible to electrically connect the controller body 1 and the display device 3 via a cable having connectors at both ends, the controller body 1 and the display device 3 are separated from each other as necessary. It can be placed. Therefore, it is possible to dispose the controller main body 1 inside the control panel and the display device 3 so as to be exposed to the outside of the control panel, and not to use the display device 3 only for adjustment and maintenance. It is also possible to use it for checking the operating state of the controlled device during the operation of, and for that purpose, it is not necessary to use a separate terminal.

(Embodiment 2) In this embodiment, as shown in FIG. 4, one power supply unit 10 and one control unit 11 are provided, and a plurality of input / output units 12 are connected to the control unit 11. Each input / output unit 12 is controlled by the control unit 11, and constitutes the controller body 1 as a whole. Here, each input / output unit 12 is formed with a recess 7 so that the display device 3 can be connected thereto, and a connector 5 connectable to the connector 4 on the display device 3 side is provided in each recess 7. It is arranged. For the purpose of maintenance and adjustment, it is not necessary to provide the display device 3 in each of the input / output units 12, and one display device 3 is sufficient.
If the display device 3 is shared by the input / output units 12, the cost can be reduced accordingly.

A mounting hole 8 is formed in the peripheral portion of the display device 3, and when the display device 3 is used separately from the controller body 1, by inserting a mounting screw into the mounting hole 8, the front surface of the control panel can be obtained. The display device 3 can be attached to a panel or the like. Further, as shown in FIG. 5, a mounting hook 9 is provided on the back side of the display device 3 so as to gradually widen the mutual distance toward the front.
When the display device 3 is mounted on the panel, a hook-shaped engaging portion 13 is formed on the outer surface of the mounting hook 9 when the display device 3 is mounted on the panel.
Temporary holding is performed only by press-fitting from the front into the mounting hole formed in the panel, and the mounting workability is improved. In this way, when the display device 3 is separated from the controller body 1, the controller body 1 and the display device 3 may be connected via the cable 15 having the connectors 14a and 14b at both ends.

[Advantages of the Invention] As described above, the present invention employs a configuration in which the display device is attached to and detached from the controller main body through the connector, so that the display device can be connected without affecting the connectable number of controlled devices. There is an advantage that it becomes possible to do. In addition, since the display device is detachable from the controller body, the display device can be shared by a plurality of controller bodies, and a plurality of controller bodies in a state where the display device is not connected are provided. By attaching and detaching the display device to and from the controller main body for common use, there is an advantage that the cost of the entire system can be suppressed as compared with the case where the display device is provided in all the controller main bodies.

Further, when the controller main body is arranged inside the controlled device, if the display device is integrated with the controller main body, the display device cannot be seen from the outside of the controlled device. Since the controller main body is detachably connected via the connector, if the respective connectors of the display device and the controller main body are connected via the cable with the connector, only the display device can be easily arranged in a visible location. There is an advantage that you can.

Furthermore, when the display device is housed in the recess, one surface of the controller main body and the front surface of the display device are substantially aligned with each other, so when the display device is connected to the controller main body without a cable, the display device is integrated with the controller main body. The present invention has an effect of giving an external appearance and does not cause a feeling of strangeness. Further, at least a part of the display device can be detachably housed in a recess opened only on one surface of the controller body.
Since the connector of 1 is provided at the bottom of the recess, the first connector is not exposed to the outside even when the display device is removed, and the appearance of the controller body is not significantly impaired when the display device is attached or detached. There is also.

Furthermore, since the display device can be detachably connected to the controller main body in a recess opened only on one surface of the controller main body, the first connector can be attached when the display device is connected to the controller main body. Not only the coupling force between the connector and the second connector, but also the display device is held by the recess, so that the mechanical coupling force of the display device to the controller body is large, and as a result, the electrical contact state by the connector is stable. There is an effect of doing.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention, FIG. 2 is a plan view showing a state in which the above display device is removed, and FIG.
(C) is a plan view, a side view, and a bottom view of a display device used in the same as above, FIG. 4 is a front view showing a second embodiment of the present invention, and FIG. FIG. 6 is a perspective view showing a conventional example, and FIG. 7 is a plan view of the same. 1 is a controller main body, 2 is terminals, 3 is a display device, 4, 5
Is a connector.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-103105 (JP, A) JP-A-59-170904 (JP, A) Actually open 55-178703 (JP, U) Actual-open Sho 58- 66406 (JP, U) Actually opened 59-93082 (JP, U) Actually opened 60-129188 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A controller body equipped with a sequence control circuit and having a device control terminal for connecting a controlled device to the sequence control circuit, and a display device capable of displaying an input / output state of the sequence control circuit. , The outer peripheral surface of the controller main body is opened only on this one surface, and at least a part of the display device can be detachably combined with the display device, and when the display device is housed, the one surface of the controller body and the front surface of the display device are connected. Are formed so as to substantially coincide with each other, and a first connector for electrically connecting the display device to the sequence control circuit is arranged at the bottom of the recess, and the display device has the first connector.
Sequence controller provided with a second connector detachably coupled to the connector of FIG.