JPH0443408A - Numerical controller system - Google Patents

Abstract

PURPOSE:To select and operate a specified numerical controller with one operation device by setting plural numerical controllers and the operation device to be connection constitution by means of a multi-drop system. CONSTITUTION:Plural numerical controllers 20, 30-60, bus lines 61 and 62 connecting the operation device 10, a bus driver 12 transmitting serial data to the bus lines 61 and 62, a receiver 13 inputting serial data from the bus lines 61 and 62 and the operation device 10 having an ID code output means outputting an ID code for specifying one numerical controller from plural numerical controllers 20, 30-60 are provided. Furthermore, plural numerical controllers 20, 30, 40, 50 and 60 having ID code recognition means recognizing that the ID code is addressed to oneself are provided. The operation device connected to the bus line transmits the ID code to the specified numerical controller among plural numerical controllers 20, 30, 40, 50 and 60 which are similarly connected to the bus line. Thus, a whole numerical controller system can flexibly be constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a numerical control device system used in a transfer line or the like, and particularly to a numerical control device system comprising a plurality of numerical control devices and operating devices.

[Conventional technology]

Conventionally, transfer lines use a large number of relatively simple numerical control devices that control one axis.

These numerical control devices and operating devices have the following system configuration.

The first system connected one operating device to one numerical control device. That is, the number of numerical control devices and operating devices is combined as many as the number of numerical control devices. Since the numerical control device and the operating device are in one-to-one correspondence, the system configuration is simple and has been widely used without any troubles caused by connecting each device.

The second system has come to operate a plurality of numerical control devices with a single operating device. In this method, one operating device is moved and connected each time to a numerical control device that requires operation.

In the third system, a plurality of numerical control devices and one operating device are connected, and a switching circuit of a relay device selects and operates a specific numerical control device from one operating device. FIG. 4 is a connection diagram of a plurality of numerical control devices and one operating device in a conventional example. In the figure, the numerical control devices 20, 30, 40, 50 and 60 are the relay device 70.
It is connected to the operating device 10 via. That is, cables 20a and 3QB are connected between each numerical control device 20, 30, 40, 50, and 60 and the relay device 70.

40a, 50a, and 60a, and the relay device 70 and the operating device 10 are connected by a cable 10a.

For example, when operating the numerical control device 30, the operating device 10 selects the numerical control device 30, and by switching the relay device 70, the numerical control device 30 and the operating device 10 are connected. Here, the numerical control device 30 can be operated from the operating device 10.

In addition, necessary data from the numerical control device 30 is transmitted to the operating device 1.
Transferred to 0.

As described above, the conventional numerical control device system requires a relay device that switches connections between a plurality of numerical control devices and an operating device.

[Problem to be solved by the invention]

However, in the first system, as the scale of the system increases and the number of numerical control devices increases, the number of operating devices connected to each numerical control device also increases, and the cost of the operating devices becomes enormous. come.

In addition, in the second system, one
Since the operation device on the stand is moved and connected, it is necessary to attach and disconnect the cable each time the operation target is changed, and the preparation work before operating the numerical control device is complicated.

In the third system, like a transfer line,
A considerable number of numerical control devices are used, and the configuration of the relay device 70 is also complicated. Furthermore, it is necessary to go to the relay device and perform the operation every time the switching operation is performed.

The present invention has been made in view of these points, and an object of the present invention is to provide a numerical control device system in which a relay device is omitted and a plurality of numerical control devices and operating devices are connected to a bus line.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a numerical control system including a plurality of numerical control devices and an operating device incorporated on a transfer line, including: a bus line connecting the plurality of numerical control devices and the operating device; A bus driver that sends serial data to the bus line, a receiver that inputs serial data from the bus line, and an ID code that outputs an ID code for identifying one numerical control device from the plurality of numerical control devices. the operating device having an output means, a bus driver for sending serial data to the bus line, a receiver for inputting serial data from the bus line, and the ID
A numerical control device system is provided, comprising: the plurality of numerical control devices described above, each having an ID code confirmation means for confirming that the code is addressed to itself.

[Effect]

The operating device connected to the bus line sends an ID code to a specific numerical control device from among the plurality of numerical control devices also connected to the bus line.

A communication circuit is connected between the operating device and the specific numerical control device that has confirmed that the ID code is addressed to itself.

When a communication circuit is connected between the operating device and a specific numerical control device, the operating device operates the specific numerical control device.

When the operating device completes the operation of a specific numerical control device, the communication circuit between the operating device and the specific numerical control device is opened.

Here again, if necessary, the operating device can select a specific numerical control device from among the plurality of numerical control devices, and operate the selected numerical control device in the same manner as the previous time.

〔Example〕

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

FIG. 1 is a diagram showing connections between a plurality of numerical control devices and an operating device in an embodiment of the present invention. The figure shows a connection between a plurality of numerical control devices and an operating device using a multi-drop method. In the figure, a plurality of numerical control devices 20.30
．． 40, 50, and 60 are connected to a bus line A61, which is a serial data transmission path, and a bus line B62, which is a serial data transmission path. The numerical control device 20 is provided with a CPU 21, a license state bus driver 22, and a receiver 23. Other numerical control device 30
．． 40, 50 and 60 are also provided with the same <CPU1) current state bus driver and receiver, but they are omitted from the figure.

Similarly, the operating device 10 is also connected to bus line A61 and bus line B62. The operating device IO includes a CPU
A bus driver 12, a receiver 13, a display screen 14, and a keyboard 15 are provided.

Next, starting from the operating device 10, the operation of a specific numerical control device will be explained. First, each numerical control device 20.30.40
．． Tri-state bus drivers 50 and 60 are inactive in a high impedance state when not communicating, and cannot send data or signals to bus line A61.

Therefore, the operating device 10 is a specific numerical control device (for example, 2
0) is sent from the bus driver 12 to the bus line B62 under the control of the CPU II. The numerical control device 20 sends the ID code from the bus line B62 to the receiver 2.
Enter the ID code from step 3 and check based on the CPU 21 that it is the ID code addressed to yourself.

At this point, the tri-state bus driver 22 of the numerical control device 20 is activated and can output data and signals. The numerical control device 20 is IDmLi
A signal is sent from tristate bus driver 22 to bus line A61. The receiver 13 of the operating device 10 is
An ID confirmation signal of this numerical control device 20 is inputted from the bus line A61. Here, the communication circuit between the operating device 10 and the numerical control device 20 is connected, and the operating device 10 becomes able to operate the numerical control device 20.

When the operation is completed, the operating device 10 sends a communication end signal to the numerical control device 20 from the driver 12 to the bus line B62. The tri-state bus driver 22 of the numerical control device 20 becomes inactive in a high impedance state under the control of the CPU 21. At this point, the communication circuit between the operating device 10 and the numerical control device 20 is released.

When the communication circuit between the operating device 10 and the numerical control device 20 is connected, the tri-state bus drivers of the other numerical control devices 30, 40, 50, and 60 are inactive and in a high impedance state. It is not possible to send data or signals to the bus line A61 from each tri-state bus driver.

As explained above, the communication circuit between the operating device 10 and the specific numerical control device 20 selected by the operating device 10 is connected,
The operating device 10 can operate the numerical control device 20.

Therefore, the operating device 10 and other numerical control devices 30, 40.
No interference with 50 and 60 will occur. Further, mutual communication between the numerical control devices 20, 30, 40, 50 and 60 is not possible.

FIG. 2 is a flowchart of a procedure for connecting communication circuits between a plurality of numerical control devices and an operating device in an embodiment of the present invention.

In the figure, the number following S indicates the step number.

[Sl:] The operating device 10 sends an ID code to a specific numerical control device (for example) 20 via bus line B62. This ID code is a confirmation code assigned to each device and specifies the numerical control device 20.

[S2] The numerical control device 20 confirms that this ID code is addressed to itself.

[S3] The numerical control device 20 activates the tristate bus driver 22 and sends an ID confirmation signal to the operating device 10 via the bus line A61. Here, a communication circuit is connected between the operating device 10 and the numerical control device 20.

[541W operating device 10 operates numerical control device 20 via bus line A61 and bus line B62. That is, a command to operate the numerical control device 20 is input using keys on the operating device 10, which will be described later, and data from the numerical control device 20 is displayed on a display screen in the operating device 10, which will be described later.

[S5] When the operation of the numerical control device 20 in the imitation device 10 is completed, the operating device 10 sends a communication end signal to the numerical control device 20 via the bus line B62.

[S6] The numerical control device 20 puts the tri-state bus driver 22 in a high impedance state and opens the communication circuit. At this point, the operation of the numerical control device 20 from the operating device 10 ends.

FIG. 3 is a front view of the operating device 10 for implementing the present invention. The operating device 10 includes a display screen 14 and a keyboard 15.
and soft keys 16.

A program can be created by inputting data according to the content displayed on the display screen 14. Generally, the type of data to be input is displayed on the left side of the screen, and a graphic representing the meaning of the data is displayed on the right side. Further, at the bottom of the screen, tasks or data that can be received on that screen are displayed in a menu format. Which item on the menu is selected is done by pressing a soft key 16 below the menu, and the meaning of the soft key 16 changes for each screen. The soft keys 16 are provided with various functions depending on the purpose. The function assigned to the soft key 16 is displayed at the bottom of the display screen 14.

The keyboard 15 has a reset key 15a1 data entry key.
15b, program edit key-15c, cancel key 1
It is comprised of a 5d1 input key 15e, a start key 15f, a function key 15g, a cursor movement key 15h, etc.

The reset key 15a is used to reset the numerical control device to cancel an alarm.

The data key 15b is composed of address keys, numeric keys, etc. The address keys are used to enter characters such as alphabets and symbols, and the numeric keys are used to enter numerical data manually.

The program editing key 15c is an ALTER key for changing part of the program or data, and an IN5 key for adding data.
DE to delete the RT key, part of the program, and data
It consists of the LET key.

The cancel key 15d is used to delete data input into the key buffer.

The input key 15e is used to set data input into the key buffer into respective data areas.

The start key 15f is used to start an MDI cycle or an automatic operation cycle.

The function keys 14g are the POS key that indicates the current position, the PRGRM key used for automatic programming, and the MENL710FS key that sets and displays tool offset data, workpiece coordinate system data, custom macro variables, etc.
It consists of a PARAM/DGNOS key for setting and displaying parameters, displaying diagnostic data, etc.

The cursor movement key 15h is a device consisting of a key for moving the cursor in the forward direction for each setting item on a data input screen, a cutting condition setting screen, etc., and a key for moving the cursor in the reverse direction. Although the explanation has been made assuming that the number of devices is five, it is of course not limited to five.

〔Effect of the invention〕

As explained above, in the present invention, a plurality of numerical control devices and operating devices are connected using a multi-drop method, so there is no need to provide a relay device between the numerical control devices and the operating devices, and it is possible to connect from one operating device to A specific numerical control device can be selected from among a plurality of numerical control devices and operated. Further, since the numerical control devices can be connected in any order, the entire numerical control device system can be configured flexibly.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing connections between a plurality of numerical control devices and an operating device in an embodiment of the present invention, and FIG. 2 is a flowchart of a procedure for connecting a communication circuit between a plurality of numerical control devices and an operating device in an embodiment of the present invention. , FIG. 3 is a front view of the operating device 10 for implementing the present invention, and FIG. 4 is a connection diagram of a plurality of numerical control devices and one operating device in a conventional example.・・・・−・−・−・Operation device・・・・ −−CPU ・°°° Bus driver receiver display device−・ −Keyboard゛ ° Numerical controller PU Tri-state bus driver receiver Numerical controller Bus line A Bus line B Relay device patent applicant FANUC Co., Ltd. agent Patent attorney Takeshi Hattori Figure 4

Claims (2)

[Claims] (1) In a numerical control device system consisting of a plurality of numerical control devices and an operating device incorporated on a transfer line, a bus line connecting the plurality of numerical control devices and the operating device, and sending serial data to the bus line. a bus driver for inputting serial data from the bus line, a receiver for inputting serial data from the bus line, and an ID code output means for outputting an ID code for identifying one numerical control device from the plurality of numerical control devices; , a bus driver for sending serial data to the bus line, a receiver for inputting serial data from the bus line, and an ID code confirmation means for confirming that the ID code is addressed to the plurality of numerical controls. A numerical control device system comprising: a device; (2) The numerical control device system according to claim 1, wherein the bus drivers of the plurality of numerical control devices are tri-state bus drivers.