JPH01277904A - Program display system for pc - Google Patents

Abstract

PURPOSE:To display only a designated signal and to enable an operator to distinctly confirm the operation by displaying the designated signal out of signals transferred from a programmable controller PC to a programming device. CONSTITUTION:When the number of a specific signal to be displayed is designated at the time of operating function keys 3 and operation keys 4 on an automatic programming device 1 to input a monitor instruction, all signals are transferred from a PC 10 to the device 1. When partial display is designated, only the designated specific signal is displayed on a display screen and unnecessary signals are not displayed; and therefore, the operator can distinctly confirm the operation process.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a PC program display method for displaying a sequence program of a PC (programmable controller), and in particular to a PC program display method that partially displays specified signals. Regarding the method.

[Conventional technology]

In order to edit a sequence program such as a ladder program of a PC (programmable controller), input/output signals of the PC are displayed on a program creation device.

These input/output signals have dedicated screens for each input signal, output signal, and internal relay signal, and are displayed for each signal. Therefore, it is convenient when you want to check only the input signal or only the output signal.

[Problem to be solved by the invention]

However, in general, when debugging a sequence program or checking its operation, it is more convenient to check not only the input signal but also the internal relay signal or the output signal as a calculation result at the same time. In particular, as the number of input/output signals increases, the number of pages displaying the input/output signals also increases, and the operator may forget the state of the input signal by the time he or she finds the output signal corresponding to the input signal.

The present invention has been made in view of these points, and it is an object of the present invention to provide a program display method for a PC that partially displays a designated signal. □ [Means for Solving the Problems] In order to solve the above problems, the present invention specifies the signals to be displayed in a PC program display method that displays input/output signals of a PC (programmable controller), and A program display method for a PC is provided, which is characterized in that a specified signal is displayed from a signal transferred from a computer to a program creation device.

[Effect]

By displaying the designated input/output signal display, the operator can clearly confirm the calculation process.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figure 2 shows an example of a ladder program. In the figure, l
000 is a human input signal, MOlo is an internal relay signal, and Qo, 0 indicates an output signal. When checking such a ladder program, input signals, internal signals, and output signals are displayed simultaneously.

FIG. 1 shows a display example of a program display method of a PC according to the present invention. In the figure, 2 is a display screen, 2a is an address, and represents each input signal, output signal, and internal signal. 2b indicates the status of one byte of each signal. 2c is a hexadecimal representation of the signal status of one byte.

That is, 10.0, QOlo, MO in FIG.

0 corresponds to the rightmost bit of one byte in the first row, the rightmost bit in the second row, and the rightmost bit in the third row in FIG. 1, respectively.

The second display is executed by the following command.

When the operator inputs monitor commands from the keyboard, the operator selects specific signals such as 10°0, QOoo, and
Specify MO and O. For example, READ 10. QO
, MO.

This command causes the automatic programming device to transfer all signals from the PC.

Next, when the partial display I date is selected, a display as shown in FIG. 1 appears on the display screen 2. Of course, unless a partial display command is given, the conventional display for each type of signal will be performed.

In this way, by specifying the input/output signals corresponding to the ladder diagram shown in FIG. 2 and displaying only the related signals regardless of the type of signal, it becomes convenient for debugging the ladder program.

FIG. 3 shows a block diagram of the hardware of a program creation device and a PC (programmable controller) for implementing the present invention. In the figure, 1 is a program creation device, 2 is a display screen, and a CRT, liquid crystal display, etc. are used. On the display screen 2, a display screen shown in FIG. 1 is displayed. 3 is a function key, which commands functions such as deletion, copying, and modification. 4 is an operation key.

The program creation device 1 has a microprocessor configuration, and the display processing described above is processed by the microprocessor within the program creation device 1.

IO is a PC (programmable controller), and 11 is a processor that controls the entire PC. An input circuit 12 receives a signal from the outside, converts the signal level, and transfers it to the bus. 13 is an output circuit, which outputs an internal output signal to the outside.

20 is a ROM, which contains a management program 21 for managing the execution of ladder programs and a ladder program 2 written in a ladder language for controlling machine tools, etc.
2nd prize is stored. A RAM 30 stores various data, including input signals, output signals, auxiliary relay signals, and internal register signals.

40 is an interface for the program creation device;
This is an interface circuit for connecting a bus and a program creation device.

Although the above description deals with the case where ladder programs are concentrated, other monic type programs can be processed in the same way.

〔Effect of the invention〕

As explained above, according to the present invention, since a specific signal can be specified and each signal can be displayed, debugging, maintenance, etc. of a sequence program can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a display example of the program display method of a PC of the present invention, FIG. 2 is a diagram showing an example of a ladder program, and FIG. 3 is a diagram showing a program creation device and a PC (programmable FIG. 2 is a hardware block diagram of the controller. 1・・・・−・・−・・−・・−Program creation device 2
−・−・・−・・−Display screen 2a-1・−・−・・Address 2 b−−−−−−−−−・−Bit display 2 c−−−
−−・・−・−Hexadecimal number display 3・・・−・−−−〜−−
−・Function key 4−・−・−・・−・−−−−
One operation key 10...----------PC (
(Programmable Controller) Patent Applicant Fanuc Co., Ltd. Agent Patent Attorney Takeshi Hattori

Claims (1)

[Claims] (1) In the PC program display method that displays input and output signals of a PC (programmable controller), a signal to be displayed is specified, and the specified signal is displayed from the signals transferred from the PC to the program creation device. A PC program display method characterized by: