JPH03144707A - Man-machine interface for nc device - Google Patents

Abstract

PURPOSE:To speed up display by providing a display control part with a classified/fixed picture storing part for dividing a fixed picture and storing the information of respective divided fixed pictures in each plural units and changing and displaying a part of the fixed picture in accordance with a classification number display instruction of each divided picture, or displaying the whole fixed picture. CONSTITUTION:The display control part 19A for executing display is provided with the classified/fixed picture storing part 26 for dividing a fixed picture and storing the information of respective divided fixed pictures in each plural units, a signal processing part 28 for changing and displaying a part of the fixed picture in accordance with a classification number display instruction of each divided picture or displaying the whole fixed picture, a fixed picture retrieving part 27, and a writing processing part 25. Thereby, a part of the fixed picture stored in the storage part 26 is updated and displayed or the whole fixed picture is displayed by the display control part 19A in accordance with a display instruction based upon a classification number specification inputted from the side of NC devices 1 to 3 or the like. Thus, rapid display can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a man-machine interface connected to an NC device of a machine tool.

(Prior art) A man-machine interface consisting of a CRT and MDI (manual data input) is connected to the NC device of various machine tools, and is used to display machine status, edit data, and issue commands to the machine. do.

Here, the man-machine ink face is usually placed at a distant position in the vicinity of the machine, and usually N
It is connected to device C via a serial communication line.

On the other hand, recent NC devices use an increasing amount of data, and this data is managed in a database. for example,
For press brakes, mold shape data for interference checking, work data for bending, fuzzy
Dehooters for control, bending control data created in advance for each type of workpiece, etc. are compiled into a database. Also,
In a punch press, data on mold shape, data on workpiece material, workpiece shape data on basic workpieces, etc. are compiled into a database.

In the conventional man-machine interface of an NC device, a large number of fixed screen formats are held in relation to the database, and are sent to the man-machine ink face side via a serial communication line when necessary. It was supposed to be transmitted.

(Problem to be Solved by the Invention) However, in the conventional method of transmitting the format data of a large number of fixed screens from the NCIC measurement station to the man-machine ink face side each time via a serial communication line, the data There is a problem in that it takes a lot of time for transmission and increases the load on the NC device.

For example, when displaying data on a CRT screen via communication, if one character is sent via a transmission path, for example, 96008
It takes approximately 1.1 mS to send one character at the transfer speed of PS, and it goes without saying that the larger the amount of data to be transferred, the longer it will take to display.

In particular, when graphics are displayed on a CRT screen, coordinate data of points is required, so as the graphics become more complex and the number of screens increases, the time required for communication increases and efficiency deteriorates.

Furthermore, since fixed screens are divided into display screen units, even screens with different messages, for example, become separate screens, resulting in a large number of screens, which is difficult to manage.

For example, when a part of a screen is changed, it is not efficient in terms of memory area or program to register almost the same data in a database or ROM area as a separate screen. Furthermore, it is wasteful to redisplay the main screen even though the contents of the main screen are the same even if the contents of the soft keys have changed.

Therefore, the present invention provides easy management of fixed screens, requires less communication time for displaying fixed screens, and has high display speed.
To provide a man-machine interface for an NC device that does not place an unnecessary burden on the C device.

[Structure of the Invention] (Means for Solving the Problems) The present invention for solving the above problems is based on an NC for controlling a machine tool.
The NC is connected to the device via a serial communication line.
NC that performs appropriate display and appropriate operations while communicating with the device
In the man-machine ink face of the device, the display control unit for performing the above display is provided with a classified fixed screen storage unit that divides the fixed screen and stores a plurality of pieces of information for each divided fixed screen. The present invention is characterized by comprising a signal processing section, a fixed lower surface search section, and a writing processing section that change and display part of the fixed screen or display the entire fixed screen in accordance with a classification number display command.

(Function) In the present invention, the display control unit of the man-machine interface is provided with a classification fixed screen storage unit that divides the fixed screen and stores a plurality of pieces of information for each divided fixed screen, and the classifications stored in this storage unit. For example, a part of the fixed screen is updated or the entire fixed screen is displayed in response to a display command manually inputted from the NC device by specifying a classification number.

(t, sε14'J) The present invention will be explained in detail below.

First, the connection relationship of the man-machine ink face of this example to a general NC device is shown in Fig. 2.
The main part of the device is the CPUI.

ROM2. RAM3 is connected to system bus 4. The RAM 3 in this example is backed up by a battery.

The system bus 4 includes a general digital input (Di) 5, a digital output (DO) 6, a programmable controller (PC) 7, and a bidirectional (DP-)R.
AM8, Serial Ink Face (510) 9,10,
11, parallel ink face CPIO) 12 are connected.

Di5 and DO6 include actuators 13A such as solenoid SQL and sensors 1 such as limit switch LS.
A connector module 14 for receiving and receiving Digicel signals with the 3B is connected.

Connected to the DP-RAM 8 is a positioning control module (PCM) 16 that provides a control signal to a servo amplifier 15 that drives a servo motor Ms to which an encoder E and a tacho generator TG are attached. In 8109,
A color CRT 17 and an MDi 18 serving as a man-machine ink face are connected via one CRT and one MDi controller. S 1010 includes an NC device (1
, 2, 3) via a control panel 20 or a control panel controller 21 for supplying operation signals. The PfO 12 has a paper tape reader 22.
is connected. 5IOII has database 23
is connected.

In the above configuration, for example, from the paper tape reader 22 to the NC
When a program is input, CPU1 interprets it and
The servo motor Ms is controlled via the PCM16. Further, the PC 7 receives signals from the sensors 13B and drives the actuators 13A at appropriate timing.

On the other hand, the CRT 17 and MDi 18, which serve as man-machine interfaces, display appropriate displays to the operator using the CRT 17, while receiving operator operation data from the MDi 18, and perform data editing, program editing, status display, alarm processing, etc. Various processes such as dialogue during maintenance are explained or executed using dialogue screens as appropriate.

The database 23 stores and stores various data necessary for control according to the control target of the NC device (1, 2, 3). For example, in a press brake, work data, material data, RF4 data, mold shape data, etc. necessary for bending control are stored.

FIG. 1 shows a portion related to CRT control (CRT controller) of the CRT 17 and MDi controller 19.
Details of 19A are shown.

In the figure, the CRT controller 19A of this example has 5I
It is provided with a buffer 24 for temporarily storing data input manually from the O9, and a write processing section 25 for performing writing processing on the CRT 17. Furthermore, in this example, the fixed screen format is divided into split screens A and B.

In C, the type A (al, a2゜a3
．． -), B(1:z, b2.b3+-), c(cl
, C2, c3,...) and a fixed screen dividing section A.

A fixed screen search section 27 that searches in units of B and C, and each member 2
A signal processing unit 28 is provided for processing signals between 4, 25 and 27.

In the CRT controller 19A having the above configuration, the CRT
17, various explanation or dialogue screens are displayed using appropriate graphics, and variable data such as the current position is written as appropriate on this fixed screen.

An example of the display screen is shown in FIG.

The display screen 17A in this example is divided into a main screen section A, a message screen section B, and a soft key screen section C, and a partial fixed screen at, bj selected for each divided section A, B, and C.
, ck are combined into one screen 17A.

In the figure, the code xXxJ indicates fluctuation data,
Other parts show fixed screens. Note that the D-axis and L-axis displayed on the main screen section A indicate the depth axis of the press brake and the movement axis of the buckle gauge.

Now, in this example, when displaying the screen as shown in FIG. 3, if the NC device side commands to display this screen,
In accordance with the instructions shown in the figure, display processing is performed in accordance with the procedure shown in FIG.

That is, in FIG. 4, the command includes two ESC codes, an instruction code 30, a main screen number (at) 31, a message number (bj) 32, and a soft key number (ck).
It consists of a screen number designation code 34 consisting of 33. Each code is represented by one 8-bit byte. The number designation code 34 may include a part without number designation in order to allow partial updating.

In FIG. 5, in steps 501, 502, and 503, the ESC code 30, instruction code 31, and display fixed screen number 32 are determined, and in step 504, the fixed screen shown in FIG. 3 is retrieved from the classified fixed screen storage section 26. , the reading process is performed, and in step 505, the fixed screen of the changed block is displayed. No in step 503
In the determination, since the data is variable data, a write process of the variable data is performed.

Therefore, in this example, when specifying a fixed screen on the NC device side, the 1-byte display fixed screen number (ai, bj, c
h), the transmission time can be minimized.

In other words, if the fixed screen data shown in Fig. 3 is to be transmitted from the database 23 side, there are approximately 240 double-byte characters in this example, so if the transmission speed is 96008 PS, it will take (240 + 140 x 2) characters x 1゜1m 540.6 seconds. . Furthermore, since graphic data such as coordinate data and line type and length are added to this, even more transmission time is required. Therefore, the display speed becomes slow and N
The load on the C device will increase, and the original axis control will also be affected, such as having to take a longer sampling time. In contrast, in this example, 3 characters x 1.1 m5 - 3.3 ms
Since the display speed can be increased, the NC device only needs to be aware of the process of transmitting variable data through distributed processing, so there is no need to place an unnecessary burden on the NC device.

In this example, it is possible to speed up the screen update through communication without sacrificing the advantage of the 11 combination that the screen can be controlled through communication. This method is particularly effective when there are many fixed screens. Generally, a greater effect can be achieved when displaying an explanation screen.

The present invention is not limited to the above embodiments, but can be implemented in any appropriate manner by making appropriate design changes.

[Effects of the Invention] As described above, the present invention stores the format of divided and classified fixed screens on the display control unit side, and displays the fixed screens in a combined manner according to the designation of the classification number by communication from the NC device side. Since it is a man-machine ink face of the device, it is easy to manage the fixed screen, there is less communication time for fixed screen display specified by the NC device, the display speed can be increased, and it is easy to manage the fixed screen. It doesn't put any unnecessary burden on you.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a man-machine interface of an NC device according to an embodiment of the present invention, and FIG.
A block diagram showing the connection relationship between the device and the man-machine interface, FIG. 3 is an explanatory diagram showing an example of a display screen, FIG. 4 is an explanatory diagram showing a screen display command method, and FIG. 5 is a display processing method using the above commands. It is a flowchart which shows. 1... CPU 2... ROM 3... RAM 9... Serial ink face 17... CRT 19A... CRT controller 24... Buffer 25... Write processing section 26... Classification Fixed screen format storage unit 27...Fixed screen search unit 28...Signal processing unit

Claims (1)

[Claims] Display control for performing the display in a man-machine interface of an NC device that is connected to an NC device that controls a machine tool via a serial communication line and performs appropriate displays and appropriate operations while communicating with the NC device. A classification fixed screen storage section is provided in which the fixed screen is divided and a plurality of pieces of information about each divided fixed screen are stored, and a part of the fixed screen can be changed or displayed in accordance with a display command for the classification number of each divided screen. A man-machine interface for an NC device, characterized in that it is equipped with a signal processing section for displaying everything, a fixed screen search section, and a writing processing section.