JPH03116202A - Programming device for programmable controller - Google Patents

Abstract

PURPOSE:To simplify the input operation of an operator for change of the sequence circuits by using an arithmetic processing means to produce the instructions for transfer, deletion and insertion of the information on the circuit to be changed for changing of the sequence circuits so far carried out by the operator. CONSTITUTION:A storage means 1001 is provided to store the produced sequence program together with a mode instructing means 1002 which instructs a change mode, a circuit instructing means 1003 which points two circuits to be changed and contained in the sequence programs stored in the means 1001 when a change mode is instructed by the means 1002, and an arithmetic processing means 1004 which performs an arithmetic processing to exchange the storage positions of the means 1001 with each other based on the sequence instruction of the circuit instructed by the means 1003. In such a constitution, an operator is required just to designate those two circuits to be changed with each other and to designate a change mode only. Thus the operating frequency of the operator is halved and the operating labor of the operator can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a programming device that creates a sequence program to be executed by a programmable controller and manually inputs it to the programmable controller.

[Prior Art] Conventionally, a programmable controller that controls the operation of electronic equipment operates according to a sequence program. For this reason, a programming device for creating and manipulating this sequence program is connected to the programmable controller as shown in FIG. In FIG. 6, programming device 10 includes display 12. keyboard 1
1, the operator inputs sequence commands constituting the sequence program from the keyboard 11, and creates and edits the sequence program while viewing the sequence commands graphically displayed on the display 12 in the form of a sequence circuit.

[Problem to be Solved by the Invention] However, in the conventional programming device of this type, the manual operation required by the operator to replace the circuit in the sequence program that has been created is complicated. There was an issue.

This point will be explained in detail.

FIG. 7 shows an example of a created sequence program stored in the program memory of the programmable controller.

In FIG. 7, the program memory is divided into five sets of pages in the order of 1 page, 4 pages, 7 pages, 30 pages, and 31 pages. Note that a page means a structural unit of a sequence circuit. Let us now take as an example a case where a circuit on page 4 is to be replaced with a circuit on page 30. First, the user instructs the programmable controller from the programming device to transfer circuit information consisting of only four pages of information to the program memory of the programming device. Thereafter, four pages of information in the program memory of the programmable controller are deleted according to instructions from the programming device. Then, the 4 page circuit information transferred to the programming device is inserted between the 7 page and 30 page information on the program memory of the programmable controller.

Next, the user transfers only 30 pages of information to the programming device as described above, and then deletes only 30 pages of information. Subsequently, the 30 pages of information transferred to the programming device are inserted between the 1st page and 7th page of information on the program memory of the programmable controller. As described above, the circuit information of 4 pages and 30 pages on the program memory of the programmable controller is exchanged. Note that in the sequence program being created, the above-described processing is executed between the program memory and work memory of the programming device.

In this way, in order to exchange the circuits of a sequence program that has already been created, the operator must perform a total of six instruction operations, including transfer, deletion, and insertion, regarding the two pieces of circuit information to be exchanged. Therefore, it is extremely troublesome for the operator to perform manual operations when erroneous input is made when creating a sequence program or when circuits are replaced when a design is changed.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a programming device for a programmable controller that can simplify the manual operation required for replacing a sequence circuit.

[Means for Solving the Problems] In order to achieve such an object, the present invention creates a sequence program consisting of sequence instructions to be executed by a programmable controller, and performs programming to input signals to the programmable controller. In the apparatus, a storage means for storing the already created sequence program, a mode instruction means for instructing an exchange mode, and two objects to be exchanged in the sequence program of the storage means when the exchange mode is instructed by the mode instruction means. The present invention is characterized by comprising circuit instruction means for instructing one circuit, and arithmetic processing means for performing arithmetic processing for mutually exchanging storage positions on the storage means with respect to sequence commands of the circuits instructed by the circuit instruction means.

[Operation] In the present invention, the operation processing means executes instruction operations for replacing a sequence circuit, that is, instructions for transferring, deleting, and inserting circuit information to be replaced, which were performed by an operator in a conventional device. Therefore, the operator only needs to perform three instruction operations: an instruction to replace the circuit by the mode instruction from the mode instruction means, and an instruction for the two circuits to be replaced from the circuit instruction means. The operating effort is halved compared to the six instruction operations required in the conventional example.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the basic configuration of an embodiment of the present invention.

In FIG. 1, a dash-dot line block 1000 indicates a programming device that creates a sequence program consisting of sequence instructions to be executed by a programmable controller and inputs signals to the programmable controller.

Reference numeral 1001 is a storage means for storing the created sequence program.

Reference numeral 1002 is a mode instruction means for instructing the exchange mode.

Reference numeral 1003 denotes circuit instructing means for instructing two circuits to be exchanged in the sequence program in the storage means when the exchange mode is instructed by the mode instructing means.

Reference numeral 1004 denotes an arithmetic processing means that performs an arithmetic process of interchanging the storage positions on the storage means with respect to the circuit sequence commands instructed by the circuit instruction means.

FIG. 2 shows a specific circuit configuration of an embodiment of the present invention.

In FIG. 2, a central processing unit (CPU) 1. Read only memory (ROM) 2. Random access memory (RAM) for system, RAM for user 4. A keyboard manpower device 51 display device 6 and a manpower output interface 7 are connected to a common bus 8 .

The CPU controls the operation of the entire device, and also performs circuit replacement processing for the created sequence program by executing the control procedure shown in FIG. Therefore, (:PI
Jl operates as an arithmetic processing means.

In addition to storing the control procedure shown in FIG. 5, the ROM 2 also stores a conventionally known control procedure for creating a sequence program.

System random access memory (RAM) 3 is cp
Human output data used in arithmetic processing executed by the ui is temporarily stored as a work memory.

The R to user M4 stores a sequence program manually input by the user from the keyboard input device 5.

The keyboard input device 5 manually inputs sequence programs to be created or modified, as well as operational instructions to the CPt1l, such as instructions for transmitting the created sequence program to the programmable controller. In addition, an instruction to replace the created circuit related to the present invention is also issued from the keyboard manual device 5.

The display device 6 displays human power information from the keyboard human power device 5 and graphically displays the created sequence program in response to Crtll's operation instructions.

A human output interface (Ilo) 7 transfers communication information between the CPUI and the programmable controller.

A sequence program contains instructions that indicate the parts that make up a circuit and their identification numbers (contact instructions, output instructions, etc.), and instructions that indicate circuit divisions (circuit end code, page code).
It consists of A sequence program corresponding to the sequence circuit shown in FIG. 4 is shown in FIG. Such a sequence program is created and stored in the user RAM 4.
Assume that it is stored in .

Next, the operation related to the present invention in the circuit of FIG. 2 will be explained in the fifth section.
Do this while referring to the flowchart in the figure. This embodiment is characterized in that [:PIll performs the instruction operation conventionally performed by the user in the sequence circuit replacement process.

After creating a sequence circuit as shown in FIG. 4, for example, when exchanging the positions of the first circuit Ql and the second circuit Q2, the user causes the display device 6 to display the created sequence program.

Next, when the key indicating exchange mode is pressed, a code signal indicating exchange mode is sent from the keyboard human power device to CP.
Sent to the UI. When the CPUI receives this code signal, it sequentially reads out the control procedure shown in FIG. 5 from the ROM 2 and executes it in an interrupt manner.

In FIG. 5, when the user uses the cursor keys to indicate the first circuit Ql to be replaced, the CPU counts the cursor position each time the cursor key is pressed, and stores the cursor position in a register in the CP called a cursor pointer. is stored (step St).

When the designation of the circuit to be replaced is completed, the CPUI calculates the storage address range of the user RAM 4 that stores the circuit based on the value of the cursor pointer, and temporarily stores it in the system RAM 3 (step S2).

Similarly, the location instruction for the other circuit Q2 to be replaced is accepted, the storage address range of the user RAM 4 is calculated, and it is temporarily stored in the system RAM 3 (step 53).
~S4). Note that the address range is calculated by the following process. That is, as shown in FIG. 3, the circuit information is sandwiched between the circuit end code and the circuit end code or between the circuit end code and the page code, so the address of the user RAM 4 corresponding to the value indicated by the cursor pointer is Calculated using a conversion formula. Next, the addresses of the circuit end code or page code sandwiching the calculated address are searched and extracted.

Based on the storage address of the circuit to be replaced obtained in this way, the first circuit information to be replaced is read from the user RAM 4 and the system RAM 4 is read out as in the conventional example.
After storing (writing) in M3, the circuit information is deleted from the user RAM 4 (steps 55 and 56). Next, the circuit information on the system 11AM3 is transferred to the user RAM.
It is inserted before or after the second circuit information to be replaced on J (step S7).

Thereafter, the second circuit information to be replaced is also transferred to the system RAM 3, and then inserted into the storage position of the user port M4 where the first circuit information was stored (steps 58 to 510).

By executing these processing steps, user RA
The storage location of the circuit information of M4 is exchanged.

In addition to this embodiment, the following examples are given.

l) Although this embodiment shows an example of replacing circuits, the replacement process may be performed in units of pages each consisting of a plurality of circuits. In this case, a key for instructing replacement in circuit units and a key for instructing replacement in page units are provided on the keyboard human device 5. Furthermore, when replacing an arbitrary number of circuits, a key for specifying a range may be provided.

2) In this embodiment, the circuit exchange process during sequence program creation is taken as an example, but if the created sequence program is transferred to the programmable controller, the above-mentioned process is performed after the sequence program is transferred from the programmable controller to the user RAM 4. Perform circuit replacement processing. Thereafter, the corrected sequence program is returned to the programmable controller. In this case, as explained in the description of the conventional example, there is no need to transfer the circuit information to be exchanged between the two devices, so there is less noise influence during information transfer, and data is not destroyed. Never.

3) In this embodiment, after all the circuit information to be replaced is transferred to the system RAM 3, the deletion and insertion processing is performed, but the transfer, deletion, and insertion processing is performed for each piece of information that constitutes the circuit information. You can. In this case, cput
This has the advantage that the work area of +1AM4 for the system can be made smaller because the work register in the system can be used, but it has the disadvantage that the exchange processing time becomes longer.

[Effects of the Invention] As explained above, in the present invention, the operator only needs to specify the two circuits to be replaced and the replacement mode, so the number of operations is halved compared to conventional devices. , the operating effort of the operator is reduced. Further, even in the case where an erroneous input is made during the creation of a sequence program or when a design change is made after the program is created, circuit replacement processing becomes easy, so that the correction processing can be accomplished in a short time.

Furthermore, even when replacing and modifying the sequence program stored in the programmable controller, the replacement and modification can be done within the programming device, which reduces the number of times information is communicated between the sequence programmable controller and the programming device, thereby reducing noise. This also has the effect of reducing the probability of data corruption caused by the influence.

[Brief explanation of drawings]

Figure 1 is a block diagram showing the basic configuration of an embodiment of the present invention, Figure 2 is a block diagram showing a specific circuit configuration of an embodiment of the invention, and Figure 3 is an example of the format of a sequence program in an embodiment of the present invention. FIG. 4 is an explanatory diagram showing a display example of a sequence program according to an embodiment of the present invention, FIG. 5 is a flowchart showing a control procedure executed by the CPU of the embodiment of the present invention, and FIG. 6 is a conventional example. FIG. 7 is an explanatory diagram showing a conventional circuit replacement processing procedure. 1...CPU, 2...ROM. ...RAM for the system. ...RAM for users. ...keyboard input device, ...display device. 1C to λ Kufu hekoguchimishi A 7' return A ≦ hair reciprocal bow disaster Niji θ sujisurusu next to 48 broke diagram Figure 1 Figure 2 Figure 7 Figure 7 Ji Seven A column System 1 Information 8 2 Ho 1 Trend Z Figure 6

Claims (1)

[Scope of Claims] 1) A programming device that creates a sequence program composed of sequence instructions to be executed by a programmable controller and inputs a signal to the programmable controller, comprising a storage means for storing the created sequence program; , mode instruction means for instructing an exchange mode; circuit instruction means for instructing two circuits to be exchanged in the sequence program of the storage means when the exchange mode is instructed by the mode instruction means; 1. A programming device for a programmable controller, comprising: arithmetic processing means for performing arithmetic processing to mutually exchange storage positions on the storage means for circuit sequence commands instructed by the circuit instruction means.