JPH0784615A - Automatic display method for sequence monitor - Google Patents

Abstract

PURPOSE:To make it possible to simply monitor a machine tool or the like and to judge an output condition at a glance by displaying a ladder block of previously registered contacts and coils, and when a final output is not turned on, flashing a contact display on an unsuitable position source. CONSTITUTION:Respective contacts X01, M08, M02 and coils M10, M11, Y10 in a machine tool such as an NC fraise are previously registered and a ladder block consisting of the registered contacts and coils is automatically displayed at the time of turning on those contacts. If a final output is not turned on, a contact on an unsuitable position source is flashed or automatically displayed. Namely when the contact X01 of a forward switch is turned on, a block of the coils M10, M11, Y10 is automatically displayed and a live line is displayed by a heavy line. When the manual switch M02 e.g. is not displayed by a live line and its contact display is flashed, status that the contact is not turned to a manual mode, the manual forward coil M10 is not turned on, the contact M08 for main spindle rotation is not closed, and a main spindle is not rotated can be judged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in machine tools such as NC milling machines and machining centers.
The present invention relates to a technique for automatically displaying a ladder of a sequence of a C control device.

[0002]

2. Description of the Related Art In conventional NC milling machines and machining centers, the ladder diagram monitor of the current sequencer is designated by a step number, a contact number, a coil number, etc., and the live line is displayed in the ladder display. . For this reason, when a certain contact is pressed, the ladder of the same block as that contact and the coil cannot be displayed. For example, if no output is made when the input contact of the operation switch is turned on, there is a problem that monitoring cannot be performed easily and the contents of output conditions such as interlock cannot be understood at a glance.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional system, and an object thereof is to solve the problems. For example, when the input contact of the operation switch does not output, the source is It is an object of the present invention to provide a sequence monitor automatic display technology in which the contact display of (3) can be blinked or spontaneously displayed by an appropriate means to easily monitor and the contents of output conditions such as interlock can be understood at a glance.

[0004]

According to the present invention, when each contact and this coil are registered in advance, the contact and the ladder block of this coil which are registered by the ON operation of the contact are automatically displayed, and the final output is not turned on. In addition, the present invention provides an automatic display method of a sequence monitor characterized by blinking the contact display of the source of the unsuitable portion or spontaneously displaying it by an appropriate means.

[0005]

As described above, according to the present invention, for example, when the input contact of the operation switch is not outputted, the inappropriate portion can be easily monitored and the contents of the output condition such as the interlock can be discriminated at a glance. Then, when outputting through indirect output, if the indirect coil and the final coil are registered, the registered coils up to the final coil can be displayed at once through the coils of several stages.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments shown in the drawings will be described below. Figure 1
Is a display diagram showing an example of registration of contacts and coils of the present invention,
FIG. 2 is a ladder diagram showing a display example of the contact, indirect output, and final output for each step of the present invention. FIG. 3 is a flow chart showing the operation procedure of the present invention.

First, FIG. 1 is a display diagram showing an example of registration of contacts and coils according to the present invention. In registration No. 1, in contrast to "contact of forward switch ... XO1", indirect output "coil ... M10". (Manual forward movement), M11 (forward movement) "and the final output" final coil ... Y10 (forward movement output) "
It has and.

A display example of FIG. 2 which is a ladder diagram of the above relationship will be described below. In "step 10", the forward switch contact XO1, the manual contact MO2, and the interlock M
Indirect output coil M10 (manual advance) is controlled in series via O5. Then, in "step 25", the contact point M10 for manual forward movement 1, the contact point MO8 for spindle rotation,
The contact M1 for operation preparation is connected in series, and the forward contact M11 and the backward contact M12 connected in series are connected in parallel, and these control the coil M11 (forward) for indirect output in series. Further, in "step 60", the forward contact M1
1, the backward contact M12 is connected in series, which controls the final output coil Y10 (forward output) in series.

An operation flowchart of the registration example and the display example will be described with reference to FIGS. Since the contact and the coil are registered in advance, when the contact XO1 of the forward switch is pressed (contact ON), the display example shown in FIG. 2 is displayed on the screen of the CRT. Here, "automatically display the ladder blocks of the registered contacts and coils" (a) and this "monitoring is possible by display" (b). That is, when the contact XO1 of the forward switch is turned on, the blocks of the coils of M10, M11, and Y10 are automatically displayed, and the live line is displayed by a bold line. In the display example, "manual M02" is not displayed as a bold hot line,
Further, since the contact display is blinking, it is understood that this contact is not closed and the "manual mode" is not set, and the "manual forward movement coil M10" is not turned on. Therefore,
Further, it can be determined at a glance that the "main shaft rotation contact M08" is not closed and the main shaft does not rotate. That is, "when the final output is not turned on, the condition of the indirect output (M10, M11) is found"
(C) is quickly determined by the blinking display of "manual M02".

An operator can read the display screen and quickly return to the normal state by performing an operation satisfying the conditions of the blinking inappropriate portion.

It is needless to say that the present invention is not limited to the above-mentioned one embodiment, and design changes can be made within the scope of the invention. For example, the registration example and the display example only show one embodiment of the present invention, and various circuit examples can be applied. That is, as the blinking display, not only the display of the contact of the source, but also the blinking display of all the inappropriate portions may be adopted, or instead of the blinking, a red display or a different color display may be adopted. Further, the electric control circuit means for the blinking display and other appropriate means are implemented by operating a known means method, so they are not particularly introduced here as an embodiment.

[0012]

[Effect] As described above, according to the present invention, for example, when the input contact of the operation switch is not outputted, the inappropriate portion can be displayed by blinking and easily monitored, and the contents of the output condition such as interlock can be seen at a glance. Can be determined by. And when outputting through indirect output, if you register the indirect coil and the final coil, you can display the registered coils up to the final coil through several stages of coils at once, and many practical effects. There is.

[Brief description of drawings]

FIG. 1 is a display diagram showing an example of registration of contacts and coils according to the present invention.

FIG. 2 is a contact and indirect output for each step of the present invention,
It is a ladder diagram showing a display example of final output.

FIG. 3 is a flowchart showing an operation procedure of the present invention.

[Explanation of symbols]

 X01 Forward switch contact M10 Forward forward coil M11 Forward coil Y10 Forward output coil M02 Manual mode contact M08 Spindle contact (a) Ladder block display example (b) Monitorable (c) Indirect output condition clarified

Claims (1)

[Claims] 1. Each contact and this coil are registered in advance, and the contact registered and the ladder block of this coil are automatically displayed when the contact is turned on. When the final output is not turned on, the source of the unsuitable portion An automatic display method for a sequence monitor, characterized in that the contact display is blinked or is spontaneously displayed by an appropriate means.