JPH02100102A - Programmable controller - Google Patents

Abstract

PURPOSE:To simplify the operation for transferring a program and to decrease the labor and time required for generating the program by storing the program for executing a control of a programmable controller (PC) and also, transferring the program at every range in which it can be instructed arbitrarily. CONSTITUTION:Read-out circuits 15, 25 read out an area of a user program to be read out of memories 100 and 200 by page data by a page instruction, and read out a program stored in this area. Storage circuits 13, 23 store temporarily a user program received by a transfer circuit 16 and 26. Detecting circuits 14, 24 detect page data instructed by the read-out circuits 25, 15. Deleting circuits 11, 21 delete the program stored in the area of the page data detected by the detecting circuit 14, 24, and inserting circuits 12, 22 insert the contents stored in the storage circuits 13, 23 in the area deleted by the deleting circuits 11, 21. In such a way, a between the user program memory 100 and 200, the programs of the area corresponding to the page instruction can be transferred in a batch.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention creates a program while transferring the program between a program input means and a processor, and based on the created program, connects various devices. This invention relates to a programmable controller (hereinafter abbreviated as PC).

[Prior Art] Generally, in a PC, input data is taken in from a human-powered device such as a sensor through an input circuit, the data is processed by a processor, and then this data is output through an output circuit to control the output device. Such processing is performed.

These series of processes are executed sequentially by the processor according to the user program, and as a result, P
Each operation of the input device connected to C is organically controlled.

User programs for such PCs are generally created using a programming device according to the configuration of the input/output devices to be connected. The program is transferred.

FIG. 5(^) shows a PC user program as a ladder diagram, and FIG. 5(B) shows a conventional example in which this ladder diagram is developed in a program area of a memory.

As shown in these figures, programs are managed based on the concept of steps as units of processing commands such as input data acquisition and output data output, and the above-mentioned program transfer is also performed in units of steps.

[Problems to be Solved by the Invention] However, when transferring a program shown in one circuit shown in FIG. 5(A), for example, the second circuit (BO (14 contacts and BOOO5 coil), or When transferring the programs for all the circuits shown in FIG. 5A, the program instructions for each step shown in FIG. 2B must be transferred individually.

For this reason, conventional PCs have had the problem that operations for transferring programs by the user are complicated, and editing operations such as program creation require a lot of effort and time.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a PC that allows user program areas to be managed for each predetermined range and for program transfer to be performed for each of these ranges. Our goal is to provide the following.

[Means for Solving the Problem] To this end, the present invention includes a processor that has a program memory and controls processing in a programmable controller according to a program stored in the program memory; a program input means for manually inputting a program; a page instruction means for dividing a program memory of each of the processor and the program input means into one or more areas, and storing a program in each of the divided areas; In both program memories of the human-powered means, there is an area specifying means for specifying an arbitrary area among the areas divided by the page instruction means, and a program stored in one area specified by the area specifying means is transferred to the other area. It is characterized by comprising a transfer means for transferring to.

[Operation 1] According to the above configuration, a program for controlling a PC can be stored for each range that can be arbitrarily specified, and can be transferred for each range.

[Embodiment J] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a PC processor and programming device according to an embodiment of the present invention. In the figure, IO indicates a processor, and 20 indicates a programming device.

30 is a CPU included in the processor 10, which controls data exchange with input/output devices connected to the PC, processes this data, and controls the overall operation of the input/output devices and the PC. 30A and 30B are ROM and RAM, respectively, which the processor IO has;
stores the processing procedure performed by the CPII 30, which will be described later in FIG. 2(C). In addition, RAM30B is
It is used as a work area for processing performed by 30.

40 is a CPU that the programming device 20 has;
Similarly, 40A and 40B are the programming device 2.
0 has ROM and RAM, respectively.

The CPO 40 executes processing and control related to creation and input of user programs. ROM40A is CP
The RAM 40B stores processing procedures related to programming, such as the processing procedures shown in FIGS. 2(A) and 2(B) related to the control of the U40, and is used as a work area for processing and control by the CPO 40.

41 and 42 are a keyboard and a display device provided in the programming device 20, respectively. The user inputs a program by pressing keys on the keyboard 41, and while referring to the program displayed in the form of a ladder diagram on the display device 42 along with this program manual input, the user creates a program such as 9 editing and performs key operations related to the program manual input. Do this.

100 and 200 are user program memories included in processor 10 and programming device 20, respectively. Each of these memories can store user programs divided into areas corresponding to page commands by programming processing described later with reference to FIG. 2(A).

The elements shown below in FIG. 1 are similar elements that both processor 10 and programming device 20 have; indicates each with the highest digit being 2.

That is, in the figure, reference numerals 6 and 26 are transmission circuits, which transmit and receive data between the processor 10 and the programming device 20 via the transmission line 50. Reference numerals 15 and 25 denote reading circuits which specify the area of the user program to be read from the memories 100 and 200, respectively, by page data associated with a page command, and read out the program stored in this area. Storage circuits 13 and 23 temporarily store user programs received by transmission circuits 16 and 26, respectively. 14 and 24 are detection circuits, and readout circuits 25 and 15, respectively.
Detect the page data specified by . 11 and 21
are deletion circuits for deleting programs stored in the areas of page data detected by the detection circuits 14 and 24, respectively; This is an insertion circuit that inserts the contents stored in the storage circuits 13 and 23°.

With the configuration described above, the user program memory 1
Programs in areas corresponding to page instructions between 00 and 200 can be transferred all at once.

Figures 2 (8) to (C) are flowcharts showing programming processing and program transfer processing, and Figures 3 (A) and (B) are conceptual diagrams showing the contents of the user program memory in each of the above processes. be.

Hereinafter, the processing according to the embodiment of the present invention will be described according to the flowcharts shown in FIGS. 2(A) to 2(C) and with reference to FIGS. 3(A) and 3(B).

FIG. 2(A) is a flowchart of programming processing. Programming in this example begins with step 5.
At step 201, a page command 201C indicating "page 10" is input using the keyboard 41, as shown in FIG. 3(B). Next, in step 5202, a program is input using the keyboard 41, and the input program is stored in the 10 page area. The program of this page area is usually constituted by a plurality of the above-mentioned circuits (a plurality of steps). After completing the program input for “IO page”, the page command 202C indicating “page 11” is input in step 5203.
The 0 page area is divided and set. Next, step 520
In Step 4, the program for "11 pages" is manually executed, and in Step 5205, the page command 2030 for "12 pages" is manually executed to divide and set the 11 page area. Thereafter, page command input and program input are performed in the same manner.

FIG. 3(A) shows the contents of the user program memory 100 that have been manually input in the same manner as the above-described process. This content may be, for example, a user program input during the manufacturing process of the PC and stored in the memory 1000 in advance.

FIGS. 2(B) and 2(C) are flowcharts showing the process of transferring the contents of the user program memory 200 shown in FIG. 3(B) to the user program memory 100 shown in FIG. 3(A).

First, in step 5211, the memory 200 is read out by the reading circuit 25 in response to pressing a predetermined key on the keyboard 41.
Read the program of the page to be transferred, and step 5
At 212, the read program is transmitted to the processor 10 by the transmission circuit 26.

At this time, data indicating the read page is also transmitted at the same time.

In the processor IO, when the program is transmitted, it is received by the transmission circuit 16 in step 5221,
It is stored in the memory circuit 13 in step 5222. In parallel with this, in step 5223, detects the designated page based on the data indicating the read page transmitted by the detection circuit 14, and deletes the page from the memory 100 by the deletion circuit 11.
Delete the program on the corresponding page. For example, as shown in FIG. 3(B), '10 pages' of the memory 200
When the program 201P in the area is instructed to be transferred, the program l in the “10 page” area of the memory 100 is transferred.
0IP is deleted, and the memory 100 changes from the state shown in FIG. 3(A) to that shown in FIG. 4(A). Next, step 52
24, the insertion circuit 12 transmits the data to the storage circuit 1.
The program 201P stored in
03C, program 101P is inserted at the deleted position. As a result, the memory 100 enters the state shown in FIG. 4(B), and the program transfer process ends.

Note that when transferring a page of the program from the processor IO to the programming device 20, the same process is performed in the opposite direction to the above.

Furthermore, as is clear from the above, the length of the program area divided by the page command can be set arbitrarily, and the pages can be arranged randomly.

[Effects of the Invention] As is clear from the above description, according to the present invention, a program for controlling a PC can be stored in each range that can be specified arbitrarily, and can be transferred in each range. Become.

As a result, operations for program transfer are simplified and
This has the effect of reducing the effort and time required to create a program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a PC processor and programming device according to an embodiment of the present invention, and FIGS. 2 (A) to (C) show programming and transfer processing according to an embodiment of the present invention. Flowchart, FIGS. 3(A) and (B) are conceptual diagrams showing the user program memory of the programmer, holder, and programming device, respectively, before program transfer in the embodiment. FIGS. 4(^) and (B) are conceptual diagrams showing the program transfer in the embodiment. A conceptual diagram showing the user program memory of the processor during and after program transfer. FIGS. 5(A) and 5(B) are conceptual diagrams showing a ladder diagram in a conventional PC and the contents of the user program memory corresponding to the ladder diagram. be. DESCRIPTION OF SYMBOLS 10... Processor, 11.21... Deletion circuit, 10.22... Insertion circuit, 13.23... Storage circuit, 14.24... Detection circuit, 15.25... Readout circuit , 16.26...Transmission circuit, 20...Programming device, 30.4O-CPU. 308, 40A...ROM. 30B, 40B...RAM. 41...Keyboard, 42...Display device, 50...Transmission line, 100.200...User program memory. Figure 2) Figure 2)

Claims (1)

[Claims] 1) A processor having a program memory and controlling processing in a programmable controller according to a program stored in the program memory; and a program input means having a program memory and inputting a program to the program memory. and page instruction means for dividing a program memory of each of the processor and the program input means into one or more areas and storing a program in each of the divided areas, and the processor and the program input means for storing a program in each of the divided areas. in both program memories of the computer, an area specifying means for specifying an arbitrary area among the areas divided by the page instruction means, and a program stored in one area specified by the area specifying means being transferred to the other area. A programmable controller characterized by comprising a transfer means for transferring data to the programmable controller.