JPS63188205A - Programmable controller system - Google Patents

Abstract

PURPOSE:To obtain a compact control panel and to display freely the messages in terms of quantity and expression by extracting a message sentence corresponding to the input/output information out of a storage means and displaying it on a display means. CONSTITUTION:A starting file memory 4 stores the control information on the messages related to the information received from equipments. A video memory 5 stores the message information in response to the control information. A CPU 6 carries out a sequence program stored in a program memory 3. A CPU 7 transfers the arithmetic results of the CPU 6 to the equipments and the display information to a loader 2 respectively. A CPU 9 controls the transfer of the font information to a display device 11 from a video memory 10 based on the display information received from a programmable controller 1. Thus the messages are displayed on a CRT screen and various types of control panels are obtained in the compact sizes in response to the arithmetic results and the input/output information received from external equipments.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a programmable controller system that controls the operation of equipment.

[Prior Art] Generally, there are various situations when an operator gives manual instructions to a programmable controller. These situations include, for example, the start timing, progress, failure information, and branch selection of the control program for machines and production equipment controlled by the programmable controller.

In these situations, it is often convenient or necessary to inform the operator of a manual instruction message to be input and processed. For example, “Press equipment ready button A”
, "Equipment process A completed", "Motor A abnormally high temperature", etc.

In conventional programmable controller systems, in order to notify the operator of such messages, the input/output information received by the programmable controller and the calculation results executed by the programmable controller are displayed on the control panel that controls the equipment in the production facility. An indicator lamp is placed, and a nameplate is attached below the indicator lamp to indicate the meaning when it lights up.

[Problems to be Solved by the Invention] Such conventional programmable controller systems have a problem in that when a large number of indicator lights are arranged, the control panel becomes large. Therefore, in reality, there are problems such as wiring from the output end of the programmable controller and power consumption of the lamps, so only the minimum necessary display lamps are used.

Therefore, the purpose of the present invention is to solve such problems,
Make the control panel more compact and reduce the number of messages
The object of the present invention is to provide a programmable controller system that can expressly display images freely.

Means for Solving Problem E] In order to achieve such an object, the present invention provides a programmable controller system that exchanges input/output information with equipment. , an instruction means for instructing a message text related to the input/output information; a storage means for storing in advance a message text that can be indicated by the instruction means; and an extractor for extracting the message text instructed by the instruction means from the storage means. and display means for displaying the extracted message text.

[Function 1] The present invention is configured such that the instruction means instructs the extraction means to write a message corresponding to the input/output information, and the extracted message is extracted from the storage means by the extraction means and then displayed on the display means. , messages can be freely expressed quantitatively and expressively.

[Examples] Hereinafter, embodiments of the present invention will be described in detail and specifically with reference to the drawings.

FIG. 1 shows an example of a configuration in an embodiment of the present invention.

In FIG. 1, 1 is a programmable controller, and the programmable controller exchanges information with an external device via a signal line 7-1. 2 is a loader, and the loader 2 inputs a sequence program for controlling the equipment to the programmable controller 1, and displays the input sequence program.

3 is a program memory, and the program memory 3 stores the sequence program input from the loader 2. 4 is a startup file memory, and the startup file memory 4 stores management information of messages related to information sent from the above-mentioned devices.

5 is a video memory, and the video memory 5 stores the above-mentioned message information in correspondence with management information.

6 is a first arithmetic processing unit (CPU);
The ua executes the sequence program stored in the program memory 3.

7 is the second cpυ, and the second CPU7 is C:PLI
The calculation result performed in step 6 is transferred to a device (not shown), and display information is transferred to the loader 2.

9 is a third CPU, and the third CPU [I9 controls the transfer of font information from the video memory IO to the display device (CRT) 11 based on the display information sent from the programmable controller 1.

Before starting operation of the programmable controller l,
The sequence control program is input to the program memory 3 in the programmable controller main body 1 by the loader 2, and is input to the video memory 5 and the screen message startup file 4.
Necessary information is set in advance in three memory areas.

The second example is a diagrammatic representation of this sequence control program.
As shown in the figure.

Figure 2 is called a ladder diagram and is displayed on the CRTII.

In the example shown in FIG. 2, information from the device is stored in a data memory 30.40 (not shown);
When the value of is °゛1°° (or from °0°“ to “
1"), the first video stored in the video memory 5
．． This shows that the second message is displayed on the display screen of the loader 2 as shown in FIG. The command 17 for displaying this message will hereinafter be referred to as the MSG command. This M
A sequence control program is created using the SG command and stored in advance in the program memory 3 by the loader 2.

FIG. 3 shows an example of the configuration of the storage area of the startup file 4.

A plurality of storage areas shown in FIG. 3 are provided as shown in FIG. 4, and store instructions specified by message commands MSGI, MSG2, . . . in code units.

In FIG. 3, reference numeral 12 denotes an area for storing screen message activation flag information, and information indicating whether or not to display a message corresponding to this flag is stored as, for example, "1" or "0°".

13 is a display flag area, and the display flag area 13 is
Information indicating whether message information is to be displayed or cleared (screen erased) is stored in the form of bit information of "1" and "0".

Reference numeral 14 denotes a flicker flag area, and the flicker flag area 14 stores information in the form of bit information as to whether or not to display message information in a blinking manner.

15 is a display start address register, and the display start address register 15 stores the start address of each message stored in the video memory 5. Also, this address is CRTI
It also corresponds to the display position of I. For example, the message 50 "Process A completed" corresponding to the address 52 "YYYY" shown in FIG. 5 is set to be located at the upper left corner of GnTll as shown in FIG.

Note that this display position may be set in advance so that the desired display position and the upper address correspond. For example, in this example, the display coordinates of the message 51 "Motor A Abnormally High Temperature" are made to correspond to the address so that the message 51 is displayed in the center of the CRT II in FIG.

Returning to FIG. 3, numeral 16 is a character number register area, and the character number register area 16 stores the number of characters in a message. FIG. 6 shows an example in which message management information is stored for each MSG command in this way.

Next, the operation of the embodiment of the present invention will be explained with reference to FIGS. 8 and 9. Figure 8 shows the CPII in the embodiment of the present invention.
An example of the control procedure of No. 6 is shown below.

The control procedure shown in FIG. When necessary information is preset in the video memory 51 screen message activation file 4 by the loader 2, the control program is executed when activated. When the first CPII 6 executes the control program, the instruction to be executed is MSG.
When it is an execution command, the start flag 12 of the screen message start file corresponding to the MSG command number is set to "1°°" (steps 51 to S2).The processing time of this MSG command is very short and the control program is executed quickly. It will not be an obstacle to doing so.

FIG. 9 shows an example of the control procedure of the second PU 7 in the embodiment of the present invention.

In FIG. 9, the second CPU 7 has the role of transferring the contents of a data memory (not shown) to the input/output device I10 of an external device and transferring data with the loader 2. Performs the following related control processing.

The second CPt 17 sequentially examines each activation flag 12 in the screen message activation file 4, and if there is an activation flag 12 with ゛1 set, it will add the display start address 15 recorded in that record and the start address. bidet j
The contents of the memo 95 are transferred to the loader 2 by the number of characters 16 through the signal line 8. The contents of the flicker flag 14 are also transferred at the same time (steps 511 → 512 → 514 → S17 → 5
18→S19→512).

The above procedure is performed when the display bit information 13 is "1°", but when this bit information is "0°", the transfer data is not the content of the video memory 5, but a code that means a blank character code, for example. 20” (hexadecimal number) by 16 characters (step 514 → 516 → 5
17).

The second CPU 7 examines all the screen message files 4 and performs the above-mentioned processing procedure, and then sets the startup flag 12 to "0".
(step 520) to end the tree control procedure.

The third CPU 9 reproduces font information corresponding to the message information in the video memory IO in the loader from the data sent through the interface 8. In this way, a message is displayed from the video memory IO to the loader's CRT ll. If, for example, 2fE is sent as a message character, the message will be deleted.

Furthermore, the control procedure for displaying transfer information on the CRTII is well known, and a detailed explanation thereof will be omitted.

As described above, according to the present invention, an MSG instruction is incorporated in the sequence program in advance according to the input/output information of the device and the arithmetic processing result of the CPU 6, and when this instruction is executed, a message corresponding to the instruction is sent. Not just information
It is also possible to display warnings such as flicker displays.

In addition, in this embodiment, the above-mentioned control procedure is performed in two CPs.

Although an example has been shown in which the process is executed by one CPU, it goes without saying that the process may be executed by one CPU. Furthermore, if the color in which the message is displayed is changed instead of the flicker display, the message can be easily recognized by the operator.

Furthermore, the loader 2 that displays messages may be incorporated into the programmable controller 1 or a control panel (not shown), and if a CRT is provided separately from the loader 2 and incorporated into the programmable controller 1 or the control panel,
It is possible to reduce the number of display lamps that display input/output information of external equipment and results of arithmetic processing of the programmable controller 1, which were explained in the conventional example.

[Effects of the Invention] As explained above, according to the present invention, messages can be displayed on the C87 screen, so various control panels can be made compact according to input/output information from external devices and arithmetic processing results. Since the message can be displayed quantitatively and expressively in an easy-to-understand manner, it is possible to control the message in a manner similar to a man-machine system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a configuration in an embodiment of the present invention, FIG. 2 is an explanatory diagram showing an example of a display in an embodiment of the present invention, and FIG. 3 is an example of a memory configuration of a message instruction code in an embodiment of the present invention. FIG. 4 is an explanatory diagram showing an example of the memory configuration of the startup file 4 in the embodiment of the present invention. FIG. 5 is an explanatory diagram showing an example of a message in the embodiment of the present invention. FIG. 7 is an explanatory diagram showing the message display position in the embodiment of the present invention. FIGS. 8 and 9 are flowcharts showing an example of the control procedure in the embodiment of the invention. It is. 1...Programmable controller, 6.7.9...
・cpu. 2...Loader, 11...CRT. A block diagram of the invention implementation row (Fig. 1).
Unillustrated (Shio implementation Ida + 1 Metsuzo-ji command I concluding code's final explanation for the leprosy) Whistle 3 Diagram me-so-ji-shi 1 Example start-up file 4/1 Qicheng district ho explanatory diagram Figure 4
J Master's explanatory diagram Unknown lament O mutual a fIJ+Mao° Flowchart Figure 8

Claims (1)

[Scope of Claims] In a programmable controller system that exchanges input/output information with equipment, an instruction means for instructing a message related to the input/output information in response to the exchange of the input/output information; A storage means that stores in advance a message text that can be instructed by the instruction means; an extraction means that extracts the message text instructed by the instruction means from the storage means; and a display means that displays the extracted message text. A programmable controller system featuring the following features.