JPH03269601A - Interlock action control system for programmable control panel - Google Patents

Abstract

PURPOSE:To eliminate the complication of a program by attaining constitution where a CPU reads the interlock information out of a storage means in accordance with the operating situation of an interlock switch and carries out the interlock control based on the interlock information. CONSTITUTION:A program control panel contains an EEPROM 3 which previously stores plural fixed screen data designed previously via a loader, etc., and displays the screen data designated by a screen No via an external controller 11, etc. For instance, a switch SW1 shown in a diagram is operated and a switch SW2 is also set as a recommended switch while the SW1 is kept ON. Thus a switch frame displays a flicker and accepts this flicker when it is operated. At the same time, a switch SW3 is set as a simultaneous action inhibiting switch and therefore the display state has no change. Thus the push of the SW3 can be neglected. When the SW1 is kept OFF, the SW3 is set as the next recommended switch. Thus the switch frame displays a flicker and accepts this when it is actuated. Meanwhile a switch SW4 is set as a next action inhibiting switch and therefore the push of this SW4 can be neglected.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides an interlocking operation switch in a programmable operation panel of an operation control device (programmable controller) that programs and controls mechanical devices, etc. at the bottom of a manufacturing line. The present invention relates to a control method for controlling the interlock operation of a switch.

[Prior Art] FIG. 2 is a block diagram showing an example of a programmable operation display.

In the figure, POD is the operation panel as a programmable operation display, and l is the CPU (central processing unit).
2 is a character generator (CG) that generates display characters, and 3 is a screen memory (EEPROM) for storing graphic data that displays the screen.
, 4 is a data memory (RAM) for holding quantitative data etc. to be displayed on the screen, 5 is an internal bus, and 6 is a transparent touch key that integrates a display panel and a transparent switch. When pointing, sign 6
a, and 6b when referring to the display panel (6a, 6b
(Although not directly shown in Figure 2).

The transparent switch 6a is located on the display screen of the display panel 6b, and by touching the operation item displayed on the screen through the transparent body that constitutes the transparent switch 6a, you can respond from the transparent switch 6a. It is designed to generate operation output for the item to be used.

7 is a key encoder (which receives the operation output of the transparent switch 6a, encodes it and transmits it to the microcomputer system 1), 8 is an operation switch, 9 is an interface bus, and 10 is used to input data for screen creation. , a loader for setting, and 11 a programmable controller as an external operation control device. A mechanical device (not shown) is connected to this programmable controller, and the operation procedure (program) of the mechanical device is controlled by this programmable controller.

As explained above, in the combination of a programmable operation panel and a programmable controller, the programmable operation panel only outputs and displays a simple on/off signal, and the interlock processing of the operation switches is performed on the programmable controller side. I was worried.

[Problem to be solved by the invention]

When combining a programmable operation panel and a programmable controller, it is necessary to control the programmable operation panel in addition to controlling the mechanical equipment on the programmable controller side. There was a problem that the program on the side was too complicated.

An object of the present invention is to solve the problems in the prior art, and to interlock interlock switches in a programmable operation panel, which can perform interlock processing for operation switches without complicating the program on the programmable controller side. The object of the present invention is to provide a motion control method.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a programmable operation panel, when a switch corresponding to an operation item is an interlock switch, a storage means for storing interlock information regarding the switch in advance, and a display means for displaying the interlock status. It was equipped with.

[Effect]

The CPU that controls the programmable operation panel reads interlock information from the storage means according to the operation status of the interlock switch, performs interlock control accordingly, and displays the interlock status on the display means. indicate.

〔Example〕

The present invention will now be described in detail with reference to the drawings.

The programmable operation panel has a storage means (EEP shown in FIG.
It has a function of displaying designated screen data by designating a screen Na by an external controller (corresponding to the programmable controller 11 in FIG. 2) or the like.

FIG. 1 is an explanatory diagram showing an example of a display screen related to the present invention of a programmable operation panel.

In the figure, a transparent operation switch (corresponding to the transparent switch 6a in FIG. 2) indicated by a broken line is closely attached to the surface of the screen.

FIG. 4 is an explanatory diagram showing an example of interlock information shown as one of the switch items in FIG. 3.

Further, FIG. 5 is an explanatory diagram showing an example of display differentiated for each interlock type.

The contents of each interlock control are shown below using the switch SWI in FIG. 4 as an example.

When the switch SWI is operated and is in the on state, the switch S
Since W2 is set as a switch recommended for simultaneous operation, the switch frame flickers as shown in FIG. 5, and when it is operated, it is accepted. Further, since the switch SW3 is set as a simultaneous operation prohibition switch, the display state does not change as shown in FIG. 5, and even if it is pressed, it is ignored.

Next, when switch SWI changes from on to off, switch SW3 is set as the next recommended switch, so the switch frame will flicker as shown in Figure 5. is accepted. Further, since the switch SW4 is set as a next operation prohibition switch, the display state does not change as shown in FIG. 5, and even if it is pressed, it is ignored.

The interlock control as described above is entirely controlled by the CPU in the programmable operation panel.

〔Effect of the invention〕

As explained above, according to the present invention, since the interlock control is carried out on the programmable operation panel side,
Interlock processing of operation switches can be performed without complicating the program on the programmable controller side. This is advantageous because conventionally, the programmable operation panel side has had more control functions than the programmable controller side, so this can be effectively utilized.

Next, as shown in Figure 5, if we differentiate the status display such as simultaneous operation recommended and simultaneous operation prohibited, there is an advantage that it becomes possible to distinguish the interlock status, which was previously impossible to distinguish by eye. be. Furthermore, by combining these differentiated display functions, it can serve as an operational guidance, and there is an advantage that it becomes possible to eliminate the need for an operational manual.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an example of a display screen related to the present invention of a programmable operation panel, FIG. 2 is a block diagram showing an example of a programmable operation display, FIG. 3 is an explanatory diagram showing an example of fixed screen data, FIG. 4 is an explanatory diagram showing an example of interlock information of the operation switch, FIG. 5 is an explanatory diagram showing an example of differentiated display for each interlock type,
It is. Explanation of symbols 1... Microcomputer system (CPU), 2... Character generator, 3... Screen memory, 4... Data memory, 5... Internal bus, 6... Transparent touch key, 6a ...Transparent switch, 6b...Display panel, 7
...Key encoder, 8...Operation switch, 9...
・Interface bus, 10...Loader, 11...
Programmable controller, 12... indicator lamp,
13... Alarm relay 14... Buzzer iml 'JE31e

Claims (1)

[Claims] 1) CPU (Central Processing Unit) connected to the operation control device
and storage means for operation items corresponding to the program sequence number of the operation control device, and operation according to operation item data corresponding to the sequence number read out from the storage means by the CPU when the sequence number is specified. A programmable operation panel comprising a display panel that displays items on the screen, and a switch that corresponds to an operation item on the panel display screen and, when operated, generates an operation output for the item and outputs it to the CPU. , when the switch corresponding to the operation item is an interlock switch, storage means for storing interlock information regarding the switch in advance; display means for interlock status; Reads the interlock information from the storage means,
The CPU performs interlock control accordingly and displays the interlock status on the display means.
An interlock operation control method in a programmable operation panel, characterized by comprising the following.