JPS63300302A - Program input display device for programmable controller - Google Patents

Abstract

PURPOSE:To improve the efficiency of address assignment job by providing an automatic symbol name assignment section and an automatic symbol name provision section so as to apply automatic address assignment to components of a circuit diagram. CONSTITUTION:A circuit diagram data storage section 6, the automatic symbol name provision section 8, an input section 1, a display device 2, a control section 10, are provided, and the automatic symbol name assignment section 9 is provided, which retrieves an address definition section of a symbol name storage section 7 to extract an undefined symbol in receiving an automatic assignment command of the undefined symbol name after the input of all programs are finished, identifies an instruction for using the symbol name according to an instruction identification section, assigns a bit number and an address to store the address assigned to an address section of all component data using the symbol name in the circuit diagram data storage section 6. Thus, the workability of the address assignment job for components is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a block diagram input display device for a programmable controller.

[Conventional technology]

In conventional programmable controllers, addresses unique to the programmable controller are assigned to the circuit components such as coils and contacts in a circuit diagram that expresses the operation of the programmable controller, or
After creating a symbol registration table in which symbol names and addresses are in one-to-one correspondence, the symbol names are assigned to the constituent elements for practical use.

[Problem that the invention seeks to solve]

However, in recent years, circuit diagrams expressing the operation of programmable controllers have become extremely complex and include a large number of components, and traditional address assignment is manual, resulting in poor work efficiency and frequent input errors. was. Moreover, in the address assignment of the programmable controller, the assignment of input relays, output relays, and internal storage area must be determined in advance at the time of program input. Furthermore, for timer instructions, pulse instructions, and arithmetic instructions, it is necessary to allocate addresses and bit numbers even in areas allocated for temporary work.

An object of the present invention is to enable the input of addresses and symbol names when inputting programs to a programmable controller, and also to allow reference to symbol names to which specific addresses and bit numbers are not assigned. It is an object of the present invention to provide a program input/display device for a programmable controller that automatically performs allocation to storage areas and improves the workability of address allocation work for the constituent elements.

(Means for Solving the Problems) A program input display device for a programmable controller according to the present invention includes an instruction code section in which instruction codes of components for sequence control of the programmable controller are stored, and an instruction code section for storing the instructions. a circuit diagram data storage section including an address section in which the address of data of the programmable controller to be executed is stored and a symbol name pointer section; a symbol name storage section in which the symbol name is stored; and an instruction in which the symbol is used. an address definition section that indicates whether an address and bit number have been assigned to the symbol, and an address that stores the address of the actual data of the programmable controller assigned to the symbol name. a symbol name storage section including a storage section; a symbol name automatic assigning section that automatically assigns a symbol name to an input component; an input section that inputs an instruction element, address, bit number, and symbol name; and a display. When a symbol name is input to the device, it is checked whether the symbol name is registered in the symbol name storage section, and if it is not registered, the symbol name is stored in the symbol name storage section of the symbol name storage section, and the address The definition part is written as undefined, and the registration location of the symbol name storage part where the symbol name is registered is stored in the symbol name pointer part of the currently input component in the circuit diagram data storage part, and the input symbol name is written. is displayed on the display device, and if the symbol name is registered in the symbol name storage section, the address definition section of the symbol name storage section is checked to see if the address and bit number corresponding to the symbol name are defined, and the definition is If it is, the address and bit number are retrieved from the symbol name storage section, stored in the address section of the currently input component in the circuit diagram data storage section, and the registration location of the symbol name storage section is retrieved from the circuit diagram data storage section. The address and bit number associated with the input symbol name in the symbol name storage section are displayed on the display device, even if the address and bit number corresponding to the symbol name are undefined. For example, the registration location of the symbol name storage section where the symbol name is registered is stored in the symbol name pointer section of the component currently being input in the circuit diagram data storage section, the input symbol name is displayed on the screen, and the input is completed. If it is an address or a bit number, check whether the symbol name pointer section of the currently input component in the circuit diagram data storage section points to the symbol name storage section, and if it does, it will be input to the symbol name storage section. The address and bit number are stored, the address definition section is used as an address definition section, and the input address is stored in the address section of the component that is programmed with the same symbol name in the circuit diagram data storage section. Displays the bit number on the display device, and if the currently input component does not have a symbol name, stores the input address in the address section of the circuit diagram data storage section,
If an address, bit number, or symbol name is not input, the control unit performs the same processing as when no symbol name is registered for the input component by the symbol name automatic assigning unit, and the input of all programs is completed and undefined. When an automatic symbol name allocation command is input, the address definition section of the symbol name storage section is searched to extract undefined symbols, the instruction that uses the symbol name is identified according to the instruction identification section, and the bit number,
and a symbol name automatic allocation section that allocates addresses and stores the allocated addresses in the address sections of all component data using the symbol name in the circuit diagram data storage section.

(Function) The outline of the program input display device of the present invention is as follows.

■ When entering the schematic data of the programmable controller components, the address, bit number, and symbol name are not specified.

A temporary symbol name is given to the component in the symbol name automatic assigning section, and the fact that the symbol name is undefined is stored in the symbol name storage section as a temporary symbol name.

■ When a symbol name is specified.

If the symbol name is stored in the symbol name storage section, it is checked whether an address has been assigned or not, and if an address has been assigned, the symbol name and address are stored in the circuit diagram data storage section. If no address has been assigned to the symbol name, the symbol name is stored in the symbol name storage section as an undefined symbol name, and only the symbol name is stored in the circuit diagram data storage section.

■ Based on commands from the input device, the symbol name automatic assignment section automatically assigns addresses and bit numbers to undefined symbol names in the symbol name storage section, and stores the assigned addresses in the circuit diagram data storage section. do.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of a program input display device for a programmable controller according to the present invention.

The program input/display device of this embodiment includes a keyboard 1 on which the operator who uses this device actually performs input operations, and a display device 2 on which the contents and results of the input operations are displayed.
, an external storage device 3 that stores circuit diagram data of the programmable controller, a printer 4 that outputs a hard copy of processing results, and a central processing unit 5.

The central processing unit 5 includes a circuit diagram data storage unit 6 that stores circuit diagram data of components for sequence control, and a symbol name storage unit that matches input symbol names, addresses, and bit numbers of the components. 7, an automatic symbol name assignment unit 8 that allocates the temporary work area, and an automatic addressing unit 8 that automatically assigns addresses and bit numbers to symbol names that are stored in the symbol name storage unit 7 and that have not been specifically assigned. It consists of an automatic symbol name allocation section 9 that controls the symbol names, and a control section 10 that controls each section.

FIG. 2 is a diagram showing an example of a program display created using this embodiment. The A contact element 21 represents a symbol name to which no address has been assigned, the B contact element 22 represents a symbol name to which an address has been assigned, and the timer element 23 represents a symbol name automatically assigned by the symbol automatic assigning unit 8. There is.

FIG. 3 is a diagram showing the data format of one component of the programmable controller stored in the circuit diagram data storage section 6. This includes an instruction code section 30 that specifies the operation of contacts, coil elements, etc., an address section 31 that indicates the address of data of the programmable controller targeted by the instruction, and a location of the symbol name in the symbol name storage section 7. It consists of a pointing symbol name pointer section 32.

FIG. 4 is a diagram showing the data format of the symbol name storage unit 7 that associates symbol names with addresses and bit numbers. This is a symbol storage section 40 that stores symbol names input by the operator or symbol names automatically assigned by the automatic symbol name assigning section 8.
, an instruction identification unit 41 for distinguishing whether the instruction in which the symbol is used is a bit operation instruction such as a contact coil or a word operation instruction such as four arithmetic operations, that is, for verifying the rationality of using the symbol name; An address definition section 42 that determines whether or not an address and bit number have been assigned, and an address storage section 4 that stores the address of the actual data of the programmable controller assigned to the symbol name.
Consists of 3.

Table 1 shows the state of the symbol name storage section 7 in the program example shown in FIG.

Table 1 Here, B indicates that the instruction using the symbol is a bit-type instruction, and W indicates that it is an arithmetic instruction. Further, U indicates that the symbol is undefined, and D indicates that it is a defined part.

FIG. 5 shows the data format of the automatic symbol name given by the automatic symbol name assigning section 8. The automatic symbol name consists of a fixed symbol name 50 and a variable symbol name 51, and by changing the value of the variable symbol name 51, one symbol name can be obtained. This is to avoid duplication of symbol names.

FIG. 6 is a flowchart showing the operation of this embodiment.

Next, the operation of this embodiment will be explained based on the flowchart of FIG.

Check if there is any input from keyboard 1 (step 1)
01). If the input instruction has not yet been completed, wait until the input instruction occurs. When an input instruction occurs, it is checked whether the number of input characters is 0 (step 102), and if it is not 0, that is, if a symbol name or an address and a bit number have been input, it is checked whether the input is a symbol name or an address and a bit number ( Step 103). If the input is a symbol name, it is checked whether the symbol name is registered in the symbol name storage section 7 (step 104). If the symbol name is not registered in the symbol name storage section 7, the symbol name is stored in the symbol name storage section 40 of the symbol name storage section 7, and is written in the address definition section 42 as undefined (step 105). Furthermore, the registration location of the symbol name storage section 7 where the symbol name is registered is stored in the symbol name pointer section 32 of the currently input component data section of the circuit diagram data storage section 6 (step 10B).

The input symbol name is displayed on the display device 2 (step 107), and completion of program input is checked (step 108). If the symbol name is registered in the symbol name storage section 7, the address definition section 42 is checked to see if an address and bit number corresponding to the symbol name have been defined (step 115). If the address definition section 42 has been defined, the address and bit number are taken out from the address storage section 43 of the symbol name storage section 7 and stored in the address section 31 of the currently input component data section of the circuit diagram data storage section 6. Then, the registration location of the symbol name storage section 7 is stored in the symbol name pointer section 32 (
Step 116). The input symbol name and the address and bit number associated with the symbol name storage section 7 are displayed on the display device 2 (step 117), and the end of program input is checked (step 108). If the address and bit number corresponding to the symbol name are undefined, the process moves to step 106. When the input is an address and a bit number, the symbol name pointer section 32 of the currently input component data section is stored in the symbol name storage section 7.
It is checked whether it points to (step 109). If the currently input component has already been programmed with a symbol name, the input address is stored in the address storage section 43 of the symbol name storage section 7, the address section 42 is defined, and the same symbol name is programmed. The circuit diagram data storage section 6 is searched to see if the symbol name is programmed with the same symbol name, and the input address is stored in the address section 31 of the component data section programmed with the same symbol name (step 110). In other words, symbol names can be defined at the time of program input without having to associate symbol names, addresses, and bit numbers in advance. Step l1l to display the input address and bit number on the display device 2
), and checks for program completion (step 108).

If the currently input component does not have a symbol name, the input address is stored in the address section 31 of the circuit diagram data storage section (step 112), and the input address is displayed on the display device 2 (step 11).
3) Check the completion of program input (step 10)
8). If the number of input characters is 0, that is, if the element is a target element of an automatic symbol, a symbol name obtained by combining the fixed symbol part 50 and the variable symbol part 51 is extracted from the symbol name automatic assigning part 8, and the variable symbol part 51 is advanced ( Step 114), the process moves to step 105. When all program input is completed, an automatic allocation command for undefined symbol names is awaited (step 118). When an automatic allocation command is issued from the keyboard 1, the address definition section 4 of the symbol name storage section 7
Step 119 to search for 2 and extract undefined symbols.
), identifies the instruction using the symbol name according to the instruction identification section 41, assigns it to a bit number and word address, and automatically writes it to the address section 31 of all component data using the symbol name in the circuit diagram data storage section 6. The assigned address is stored (step 120). The above operation is repeated for all undefined symbols (step 121).

(Effects of the Invention) As explained above, the present invention has an automatic symbol name assignment section and an automatic symbol name assignment section, and automatically assigns addresses to circuit diagram components, thereby increasing the efficiency of address assignment work. It has the effect of significantly improving.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the program input display device for a programmable controller of the present invention, Fig. 2 is a diagram showing an example of a program display created using this embodiment, and Fig. 3 is a circuit diagram. A diagram showing the data format of one component of the programmer and pull controller stored in the data storage unit 6. FIG. 4 is a data format of the symbol name storage unit 7 that associates symbol names with addresses and bit numbers. FIG. 5 is a diagram showing the data format of the automatic symbol name given by the symbol name automatic assigning unit 8.
The figure is a flowchart showing the operation of this embodiment. DESCRIPTION OF SYMBOLS 1... Keyboard, 2... Display device, 3... External storage device, 4... Printer, 5...
Central processing unit, 6... Circuit diagram data storage unit, 7... Symbol name storage unit, 8... Symbol name automatic assigning unit, 9... Symbol name automatic assigning unit, l... Control unit.

Claims (1)

[Claims] In a programmable controller, an instruction code section that stores instruction codes of components for sequence control of the programmable controller, and an address of data of the programmable controller that targets the instructions are stored. a circuit diagram data storage section including an address section and a symbol name pointer section; a symbol name storage section in which a symbol name is stored; an instruction identification section that identifies an instruction in which the symbol is used; , a symbol name storage section including an address definition section indicating whether the bit number has been assigned or not, and an address storage section in which the address of the actual data of the programmable controller assigned to the symbol name is stored; an automatic symbol name assigning unit that automatically assigns a symbol name to a component that has been input; an input unit that inputs instruction elements, addresses, bit numbers, and symbol names; and a display device; It is checked whether the symbol name is registered in the storage section, and if it is not registered, the symbol name is stored in the symbol name storage section of the symbol name storage section, the address definition section is written as undefined, and the symbol name is The registration location of the registered symbol name storage section is stored in the symbol name pointer section of the currently input component in the circuit diagram data storage section, the input symbol name is displayed on the display device, and the corresponding symbol name storage section is stored. If a symbol name is registered, the address definition section of the symbol name storage section is checked to see if the address and bit number corresponding to the symbol name have been defined. If they have been defined, the address and bit number are retrieved from the symbol name storage section. The input symbol is extracted and stored in the address field of the currently input component in the circuit diagram data storage section, and the registration location of the symbol name storage section is stored in the symbol name pointer section of the circuit diagram data storage section. The address and bit number associated with the symbol name in the symbol name storage section are displayed on the display device, and if the address and bit number corresponding to the symbol name are undefined, register the symbol name storage section in which the symbol name is registered. The location is stored in the symbol name pointer section of the currently input component in the circuit diagram data storage section, the input symbol name is displayed on the screen, and if the input is an address or a bit number, the circuit diagram data storage section Checks whether the symbol name pointer part of the currently input component points to the symbol name storage part, and if so, stores the input address and bit number in the symbol name storage part and opens the address definition part. The address has been defined and the input address is stored in the address field of the component programmed with the same symbol name in the circuit diagram data storage section, the input address and bit number are displayed on the display device, and the currently input address is displayed. If a symbol name has not been assigned to a constituent element, the input address is stored in the address section of the circuit diagram data storage section, and if no address, bit number, or symbol name has been entered, the automatic symbol name assigning section stores the input address in the address section of the circuit diagram data storage section. a control unit that performs the same processing as when no symbol name is registered for the input component;
When all program input is completed and an automatic allocation command for undefined symbol names is input, the address definition section of the symbol name storage section is searched, the undefined symbol is retrieved, and the instruction using the symbol name is identified according to the instruction identification section. A program for a programmable controller, which has an automatic symbol name assignment section that assigns bit numbers and addresses, and stores the assigned addresses in the address section of all component data using the symbol name in the circuit diagram data storage section. Input display device.