JPH0553611A - Programming device for programmable controller - Google Patents

Abstract

PURPOSE:To improve the working efficiency for the production of a program by allocating the memory addresses of the divided operands with the use of a user memory address allocating means through a symbol name dividing means. CONSTITUTION:An instruction anti an operand are separated from each other by an instruction/operand dividing circuit 2 based on a character string or a code inputted through a keyboard 1. Then an instruction object production circuit 3 produces an object from the separated instruction, and this object is stored in a program memory 7. Meanwhile the memory address of the separated operand is allocated by a user data memory address allocating circuit 5 through a symbol name dividing circuit 4. The value of the allocated address is identical with the initial value, i.e., the default value set previously or the value inputted by a human being when a programming task is started. Then the value of the allocated address is identical with the value of the address which is counted up by the circuit 5 during production of a program.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programming device for a programmable controller which inputs a symbol name, which can be called a label name of a user data memory address, as an operand of an instruction in a program, and particularly to a work for creating a program for the programmable controller. The present invention relates to a programmable controller programming device capable of improving efficiency.

[0002]

2. Description of the Related Art Generally, in a programmable controller programming device of this type, when a program is input, a method of directly inputting an operand for an instruction in the program by a memory address, and a symbol name to which the memory address has already been assigned. There are two ways to use. In this case, in the input for the symbol name, the object program cannot be created unless the memory address is assigned. For this reason, conventionally, before using a symbol name, a human allocates a memory address to the symbol name, and then a program is input using the symbol name to create an object program.

However, when an attempt is made to create a program using the symbol name as described above,
It is necessary to allocate memory addresses to individual symbol names in advance, and if you try to allocate to multiple blocks that make sense, the number of symbol names and blocks is large, and programmable controllers, especially In a large programmable controller, a considerable amount of time is required for the work of allocating and checking the memory address in advance, which is one of the factors that reduce the work efficiency when creating a program for the programmable controller. It is also accompanied.

[0004]

As described above, in the conventional method, there is a problem that the work time required for the prior memory address allocation work and the check work is long, and the work efficiency at the time of creating the program of the programmable controller is poor. there were.

An object of the present invention is to provide an extremely highly reliable programmable controller programming device capable of improving work efficiency when creating a program for a programmable controller without requiring prior memory address allocation work and check work. To provide.

[0006]

In order to achieve the above object, according to the present invention, a programmable controller programming device for inputting a symbol name as an operand of an instruction in a program is provided with an input means for inputting a character string or a code. , Creating an object from the character string or code input by the input means, an instruction / operand classification means for classifying whether it is an instruction or an operand, and an object for creating the object from the instructions classified by the instruction / operand classification means Means, a symbol name sorting means for sorting the block identification information at the head of the symbol name and providing selection information, and a symbol name sorting means for judging whether or not a symbol name has been input to the operand sorted by the instruction / operand sorting means. If the memory address is User data memory address allocating means for sequentially allocating a symbol name which is not assigned a memory address in the case of a symbol name and subsequent memory addresses based on the selection information from the symbol name sorting means, and a user data memory address allocating means. An operand object creating means for creating an object from the memory address assigned by the data memory address assigning means, and a program memory for storing each object created by the instruction object creating means and the operand object creating means are configured. ing.

[0007]

Therefore, in the programmable controller programming device of the present invention, the operands are sorted by the instruction / operand sorting means from the character string or code input by the input means, and the memory address of the sorted operand is a symbol. It is assigned by the user data memory address assigning means through the name sorting means. In this case, the memory address to be assigned depends on the contents of the assigned address counter at that time, but this value becomes the initial value at the beginning of programming, that is, the preset default value, or the value input by a human, and the program is being created. Becomes the value of the address counted up by the user data memory address allocating means. The memory information for each block of the allocation address is determined by the identification information from the symbol name sorting means.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The programmable controller programming device of the present invention,
While checking the attribute of the symbol name, the user data memory address for the symbol name is assigned to the memory address determined by the attribute to create the object program of the programmable controller. An embodiment of the present invention based on the above concept will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing an example of the overall configuration of a programmable controller programming device according to the present invention. That is, as shown in FIG. 1, the programmable controller programming device according to the present embodiment includes a keyboard 1 as an input unit, an instruction / operand classification circuit 2, an instruction object creation circuit 3, a symbol name classification circuit 4, It comprises a user data memory address allocation circuit 5, an operand object creation circuit 6, and a program memory 7. Here, the keyboard 1 is for inputting a character string or a code.

The instruction / operand discriminating circuit 2 discriminates from a character string or a code input by the keyboard 1 whether it is an instruction or an operand. Further, the instruction object creating circuit 3 creates the object from the instructions sorted by the instruction / operand sorting circuit 2.

On the other hand, the symbol name classification circuit 4 classifies the block identification information at the head of the symbol name and provides selection information. The user data memory address allocation circuit 5 is composed of a block allocation selection circuit 51, an allocation address counter 52, and an operand data memory address allocation circuit 53. Here, the allocation address counter 52 indicates a memory address that can be allocated to a symbol name to be input next, and on top of this basic structure, the symbol name classification circuit 4 and the block allocation selection circuit. By 51, the memory address for each block that is actually allocated by the operand data memory address allocation circuit 53 is controlled. That is, the user data memory address allocation circuit 5 determines whether or not a symbol name is input to the operand classified by the instruction / operand classification circuit 2, and if it is not a symbol name, allocates a memory address, or uses the symbol name. If there is a symbol name that has not been assigned a memory address,
Based on the selection information from the symbol name sorting circuit 4, the memory addresses are sequentially assigned after a certain memory address. Further, the operand object creating circuit 6 creates the object from the memory address assigned by the user data memory address assigning circuit 5. Furthermore, the program memory 7 is for storing each object created by the instruction object creating circuit 3 and the operand object creating circuit 6. Next, the operation of the programmable controller programming device according to the present embodiment configured as described above will be described.

In FIG. 1, instructions and operands are classified by a command / operand classification circuit 2 from a character string or code input from the keyboard 1. And
From the instructions sorted by the instruction / operand sorting circuit 2, the object is created by the instruction object creating circuit 3 and stored in the program memory 7. On the other hand, the memory address of the operand sorted by the instruction / operand sorting circuit 2 is assigned by the user data memory address assigning circuit 5 through the symbol name sorting circuit 4. In this case, the memory address to be assigned depends on the contents of the assigned address counter 6 at each time, but this value becomes an initial value at the start of programming, that is, a preset default value, or a value input by a human, and the program is created. Inside is the value of the address that the user data memory address allocation circuit 5 counts up. Based on the identification information from the symbol name classification circuit 4, the block allocation selection circuit 5
By 1, the memory address for each block of the allocation address is determined. The initial value of the assigned address counter 52 may be set in advance, or may be input by a human at the start of program creation. Hereinafter, regarding the allocation operation in the user data memory address allocation circuit 5,
A description will be given according to the flowchart shown in FIG.

Now, when an operand is input, this input operand is detected (step S1), and it is determined whether or not the operand is a symbol name (step S2). As a result, when it is determined that the operand is not the symbol name, the operand address is created assuming that the memory address is input (step S3).

When it is determined that the operand is a symbol name, the location of the block is determined from the identification information in the symbol name (step S4). Further, it is determined whether the address in the block has already been assigned (step S5). As a result, when it is determined that the address has already been assigned, the address is detected from the data in the table or the like (step S6).

On the other hand, when it is determined that the address has not been assigned yet, it is determined whether or not the address to be assigned next is free (step S7). As a result, when it is determined that the address is not empty, this allocation operation is stopped as an error (step S8). In this case, error handling when the next address to be allocated is not available,
For example, processing such as outputting an error message is performed. When it is determined that the address is empty, the address to be assigned is detected (step S9). Then, the processing for advancing the address to be assigned by one when the next symbol name is input is performed (step S10). Finally, the symbol name is assigned to the address for each block obtained in step S6.

Next, the operand object creating circuit 6
Then, the object is created from the memory address allocated by the user data memory address allocation circuit 5 as described above. The object created by the operand object creating circuit 6 is stored in the program memory 7.

As described above, the programmable controller programming device of this embodiment uses the keyboard 1 for inputting a character string or code and the character string or code input by the keyboard 1 to determine whether it is an instruction or an operand. The instruction / operand classification circuit 2 for classifying the inside, the instruction object creation circuit 3 for creating the object from the instructions classified by the instruction / operand classification circuit 2, and the block identification information at the beginning of the symbol name, It is determined whether or not a symbol name is input to the symbol name sorting circuit 4 that gives selection information and the operand sorted by the instruction / operand sorting circuit 2, and if it is not a symbol name, a memory address is assigned, and it is also a symbol name. In case of memory address allocation The symbol name that is not is,
An object is created from a user data memory address allocating circuit 5 that sequentially allocates a certain memory address and thereafter based on the selection information from the symbol name classification circuit 4 and a memory address allocated by the user data memory address allocating circuit 5. It is composed of an operand object creating circuit 6, an instruction object creating circuit 3, and a program memory 7 for storing each object created by the operand object creating circuit 6.

Therefore, every time an operand is input, an object of this allocated memory address is created and the object is sequentially stored in the program memory 7. Therefore, even if an unallocated operand is input, Object programs can be created. Moreover, since the area to be automatically allocated can be designated for each block, the area to be allocated can be controlled according to the type of user data. For this reason, the areas to be automatically allocated are classified according to usage, such as the type of data, for example, wide area data and narrow area data, internal address or external address, and data division for own program task and other tasks. Address assignment can be automated.

As described above, when the symbol name is input as the operand, the allocation is performed even if the data memory allocation has not been completed, so that the allocation work of the data memory can be remarkably reduced, and the data classification type Since automatic assignment is possible for each, when programming the programmable controller task, it is possible to perform programming while distinguishing it from the symbol names of other tasks. Furthermore, the efficiency of debugging by these can be improved, and when programming the programmable controller program. It is possible to significantly improve the work efficiency of.

In the above embodiment, the case of allocating the operands of the instruction has been described, but the allocating process of first giving the initial value and then allocating the program page of the programmable controller, that is, page number allocation. The present invention can be similarly applied to the above.

[0021]

As described above, according to the present invention, it is possible to improve the work efficiency at the time of creating the program of the programmable controller without the need for the work of allocating the memory address and the check work in advance. A high programmable controller programming device can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a programmable controller programming apparatus according to the present invention.

FIG. 2 is a flowchart for explaining an allocation operation of a user data memory address allocation circuit in the embodiment.

[Explanation of symbols]

1 ... Keyboard, 2 ... Instruction / operand sorting circuit, 3 ...
Instruction object creation circuit, 4 ... Symbol name classification circuit, 5 ... User data memory address allocation circuit, 51 ...
Block allocation selection circuit, 52 ... Allocation address counter,
53 ... Operand data memory address allocation circuit, 6 ...
Operand object creation circuit, 7 ... Program memory.

Claims (1)

[Claims] 1. In a programming device of a programmable controller for inputting a symbol name as an operand of an instruction in a program, an input means for inputting a character string or code, and a character string or code input by the input means Instruction / operand classification means for classifying instructions or operands, instruction object creation means for creating an object from the instructions classified by the instruction / operand classification means, and block identification information at the beginning of the symbol name Symbol name sorting means for giving selection information, and it is determined whether or not a symbol name is input to the operand sorted by the instruction / operand sorting means, and if not a symbol name, a memory address is allocated,
Further, in the case of a symbol name, a user data memory address allocating means for sequentially allocating a symbol name whose memory address is not allocated after a certain memory address based on the selection information from the symbol name classification means, and the user An operand object creating means for creating an object from the memory address allocated by the data memory address allocating means; and a program memory for storing each object created by the instruction object creating means and the operand object creating means, respectively. A programmable controller programming device characterized by comprising: