JP2004171401A - Sequence program formation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sequence program formation device facilitating the formation and editing of a sequence program. <P>SOLUTION: In the formation and editing of a sequence program, the position, kind, and signal name of a device are inputted (100-102). An address display attribute according to the kind of address is set (104 and 105). The symbol and name of a corresponding device on the displayed sequence program (ladder program) are displayed by the color of its display attribute (106). The set position, kind, name, and address display attribute of the device are stored in a memory (107). When a signal address assignment display screen is read out, this device information stored in the memory is read, and each piece of the device information (number, name, inputted address) is color-coded and listed on the basis of the set and stored address display attribute. Accordingly, the assignment of address is facilitated. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for creating a sequence program used in a programmable controller.
[0002]
[Prior art]
In a programmable controller, a control target is sequence-controlled based on a sequence program including a ladder program. A sequence program creating apparatus that creates a sequence program (ladder program) used by the programmable controller in an interactive manner is already known and used.
[0003]
In this sequence program creation device, the display layout of the ladder program is devised to facilitate the creation and editing of the sequence program, the display is switched to facilitate understanding of the ladder program, the function block It is also known that the state is displayed by changing the thickness of the line, or the display color of the batch-converted parameters is changed to facilitate creation and editing of a sequence program (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-2002-182712
[Problems to be solved by the invention]
An object of the present invention is to provide a sequence program creation device that facilitates creation and editing of a sequence program.
[0006]
[Means for Solving the Problems]
The present invention relates to a sequence program creation device, and a display attribute input unit for inputting display attribute information for distinguishing the type of an address of a device used in a sequence program, and a display attribute input by the display attribute input unit. A storage unit for storing information; and a display unit for displaying a device or signal name in the sequence program according to the display attribute information stored in the storage unit. According to the display attribute information, the devices are displayed with the types of addresses distinguished, so that the sequence program can be easily created and errors can be reduced. Further, the display device has a signal address assignment screen for displaying a list of signal names for assigning addresses to the signal names, and the signal names displayed on the signal address assignment screen are displayed according to the display attribute information. Further, by selecting a specific display attribute, a device having a display attribute that matches the selected display attribute is read from the storage means and displayed on the signal address assignment screen. Further, by selecting a specific display attribute, a device that matches the display attribute information stored in the storage means is displayed on the sequence program according to the display attribute information. In particular, devices are displayed in different colors by setting the display attribute information to “color”.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a main block diagram of a sequence program creation device 1 according to one embodiment of the present invention. The hardware configuration of the sequence program creation device 1 is the same as the configuration of the conventional sequence program creation device. The processor 10 is connected via a bus 15 to a memory 12 composed of a ROM, a RAM, etc., an input means 11 such as a keyboard with a display device, and the created sequence program to a driver of a storage medium such as a floppy (registered trademark) disk. An input / output circuit, a communication interface 14 for directly outputting a created sequence program to a programmable controller or a programmable controller of a CNC via a communication line, and the like are connected.
[0008]
FIG. 2 is an explanatory diagram illustrating an outline of creating a sequence program using the sequence program creating device 1. FIG. 3 is an operation flowchart of a sequence program creation and editing process.
The operator operates the display device / input means 11 to switch the display screen of the display device to a sequence program creation / edit screen, and designates a position for inputting a device using the cursor or mouse of the display device / input means 11 ( In step 100), a symbol (type) of a device such as a contact or a coil is set at the designated position using a symbol key provided on a keyboard (step 101). Then, the signal name of the device is input using a keyboard (step 102). As shown in FIG. 2, device symbols and signal names such as INP1, INP2, OUT1,... Of the device are displayed on the screen of the display device.
[0009]
Furthermore, when the signal name of the device is input, a window is displayed in which the device number (numbers are assigned in the order of creation), the signal name, and the address and display attributes are blank (step 103). . If no address is set at this stage, only the address display attribute is input (step 104). When an address is input, the address display attribute is automatically set based on the input address (step 105). That is, the address is a number indicating a location where each signal such as an input / output signal with the machine and an internal relay is present, and is classified into a plurality of types. For example, in the case of a programmable controller used for a CNC (numerical control device), the addresses are a signal X input from the machine to the programmable controller, a signal Y output from the programmable controller to the machine, and an input signal from the CNC to the programmable controller. F, a signal G output from the programmable controller to the CNC, an internal relay R, a message request signal A, a counter C, a keep relay K, a variable timer T, a data table D, a label number L, and a subprogram number P. . A display attribute is assigned to each of these address types. The address display attribute is composed of a mark, a code, an icon, and the like. In this embodiment, the address display attribute is set to “color”. A display color is given for each type of address so as to be displayed in different colors. A color is input and set as an address display attribute according to the type of address.
[0010]
When the address display attribute is input in this way, the symbol and signal name of the device are changed to a display color corresponding to the input display attribute (step 106). Next, the device number, the device position, the type, the name, the display attribute, and the address set and input in steps 100 to 105 are stored in the symbol data file 12a provided in the memory 12 (step 107). If the programming is not completed, the process returns to step 100 to repeatedly execute the above-described processing operations to create and edit a sequence program. When the programming ends and the program end is input, the sequence program creation / edit processing ends.
[0011]
The sequence programs P1 and P2 created in this way are stored in the memory 12 as subprogram 1 and subprogram 2 as shown in FIG. 2, and device numbers, device positions, and device numbers used for each stored sequence program. The type, signal name, address display attribute, and address are stored in the symbol data file 12a.
[0012]
Next, when the signal address assignment screen is called, the processing shown in FIG. 4 is executed. The stored device information is called from the symbol data file 12a of the memory (step 200), and the display color is changed based on the set address display attribute, and the device number, signal name, and address are displayed on the list display screen. It is displayed on the display screen of the display device / input means 11 as shown by reference numeral 20 in FIG. 2 (step 201). Hereinafter, as long as the device information is stored in the symbol data file 12a in the memory 12 (step 202), the device information is read and added to the display screen as shown by reference numeral 20 in FIG. In this case, if an address has been input in step 105 of FIG. 3, the address is also displayed, but if no address has been input, there is no display of the address.
[0013]
A signal address assignment screen as indicated by reference numeral 20 in FIG. 2 is displayed, and an address is assigned to each device to which no address is assigned on this screen. At this time, the display colors are displayed differently according to the type of the address of the device, so that it is easy to assign the addresses and reduce errors. The addresses thus allocated are stored in the symbol data file 12a in the memory 12 corresponding to the allocated devices.
[0014]
Further, when the signal address selection display screen is selected, the processing shown in FIG. 5 is started. First, an address display attribute to be displayed is set and input (step 300). The processor 10 reads the symbol data file 12a in the memory 12 from the head. If there is device information (step 301), the processor 10 reads the device information (step 302). It is determined whether they match (step 303). If they do not match, the process returns to step 301. If they match, device information is additionally displayed on this selection display screen (step 304), and the process returns to step 301. Hereinafter, the above-described processing is repeated until all the device information stored in the symbol data file 12a is read.
[0015]
As a result, on this selection display screen, only devices having the same address display attributes as those set are selected and displayed. Therefore, if the device of the same type, for example, the selected address display attribute indicates an internal relay, only the internal relay is displayed. Therefore, if addresses are assigned using this selection display screen, since the addresses are of the same type, address assignment is very easy and simple, and erroneous assignment can be reduced. Note that even if addresses are assigned on this selection display screen, the assigned addresses are stored in the symbol data file 12a corresponding to the assigned devices.
[0016]
【The invention's effect】
Since the addresses of the devices are classified and displayed, the address assignment is facilitated, and the creation and editing of the sequence program are facilitated.
[Brief description of the drawings]
FIG. 1 is a main block diagram of a sequence program creating device according to an embodiment of the present invention.
FIG. 2 is a schematic explanatory diagram of creating a sequence program using this embodiment.
FIG. 3 is an operation flowchart of a sequence program creating and editing process in the embodiment.
FIG. 4 is an operation flowchart of display processing of a signal address assignment screen in the embodiment.
FIG. 5 is an operation flowchart of display processing of a signal address selection display screen in the embodiment.
[Explanation of symbols]
1 Sequence program creation device 10 Processor (CPU)
Reference Signs List 11 display / input means 12 memory 13 input / output circuit 14 communication interface 15 bus P1, P2 sequence program

Claims (5)

Display attribute input means for inputting display attribute information for distinguishing the type of address of a device used in the sequence program, the sequence program creating device;
Storage means for storing display attribute information input by the display attribute input means;
Display means for displaying the device or signal name on the sequence program in accordance with the display attribute information stored in the storage means. The display device includes a signal address assignment screen for displaying a list of signal names for assigning addresses to the signal names, and displaying the signal names displayed on the signal address assignment screen in accordance with the display attribute information. The sequence program creation device according to claim 1, wherein 3. The sequence according to claim 2, wherein by selecting a specific display attribute, a device having a display attribute that matches the selected display attribute is read from the storage unit and displayed on the signal address assignment screen. Program creation device. 4. The device according to claim 2, wherein by selecting a specific display attribute, a device matching the display attribute information stored in the storage unit is displayed on the sequence program according to the display attribute information. Sequence program creation device. The sequence program creation device according to claim 1, wherein the display attribute information is a color to be displayed.

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