JPH11175126A - Function adding method for cnc device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a function adding method for a CNC device (robot control ler) which can easily add a function of the CNC device. SOLUTION: Signal converting means 8, 9, and 11 consist of parallel/serial signal converters 8a, 9a, and 11a which perform mutual conversion between parallel signals and serial signals, optical transmission and reception modules 8b, 9b, 11b1, and 11b2 which perform mutual conversion between light signals and electric signals, and serial buses 8c, 9c, and 11c which connect them. A connecting device B for function addition is prepared which is constituted by connecting more than one of the signal converting means 8 to the system bus 7 of a CNC device main body A and connecting a connector and the signal converting means 11 to the system bus 7. The signal converting means 8 and 9 are connected by an optical cable and option boards 21 and 22 are connected to the connector 6 of the connecting device B for function addition to add the function of the CNC device. There is no restriction of the addition of the option boards.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller or a robot controller (hereinafter referred to as CNC) having a computer.
Device).

[0002]

2. Description of the Related Art As shown in FIG. 3, a conventional CNC device A includes a main board 1 having a processor, a display device 4, a keyboard 5, and other optional boats 2, 3, and the like.
A printed board (hereinafter referred to as a backplane) for connecting the printed board of each functional element of the NC apparatus A via the connector 6
The backplane 10 includes a parallel bus system bus 7 connected to the connector 6. By connecting each of the functional elements 1 to 5 of the CNC device A to the system bus 7 via the connector 6,
The functional elements 1 to 5 of the device A are connected to each other, so that signals can be mutually transmitted and received, thereby forming a control device system.

[0003]

The number of connectors 6 connected to the system bus 7 of the backplane 10 is limited, and printed circuit boards of functional elements more than the number of connectors 6 provided on the backplane 10 are connected. I can't. However, in order to improve the function of the CNC device A, and as various devices that can be connected to the CNC device A are developed, there is a demand to incorporate many optional functions into the CNC device main body A. When the number of connectors 6 of the backplane 10 exceeds the number of the optional functional element printed boards,
Cannot be connected to 0. Therefore, an object of the present invention is to provide a method for adding a function of a CNC device, which can easily add a function of the CNC device.

[0004]

According to the present invention, there is provided a system comprising a parallel bus to which a plurality of connectors are connected by connecting signal conversion means for mutually converting a parallel signal and a serial signal to a system bus of a CNC device. A signal conversion means of a CNC device and a signal conversion means of the function addition connection device, using a function addition connection device provided with a bus and a signal conversion means connected to the system bus and mutually converting a parallel signal and a serial signal. Are connected by a cable, and the functional elements to be added are connected via the connector of the connection device for function addition, thereby enabling the function expansion of the CNC device.

[0005] Further, one or more signal conversion means are connected to the system bus of the CNC device,
The functions are expanded by configuring a network by connecting the above numerical control devices with cables.

Further, an optical transmitting / receiving module for mutually converting an electric signal and an optical signal is provided in the signal converting means, and the influence of transmission loss and disturbance is eliminated by using a cable as an optical cable. The signal conversion means of the connection device for adding functions is
One connector or two optical transmission / reception modules should be connected. One connector or optical transmission / reception module should be connected to the main body of the numerical control device, and the other connector or optical transmission / reception module should be connected to another function adding connection device. Allows additional functional elements to be added.

In order to simplify the connection of the signal conversion means to the system bus, the signal conversion means is connected to the system bus via a connector connected to the system bus of the numerical control device or the function addition connection device. .

[0008]

FIG. 1 is a block diagram showing an embodiment of the present invention. In the main body of the CNC device A, a printed board of each functional element of the CNC device A such as a main board 1 having a processor, a display device 4, a keyboard 5, and other optional boats 2 and 3 is connected via a connector 6 by a parallel bus. It is connected to a certain system bus 7 and mutually transmits and receives signals. Further, in the present embodiment, there are provided signal conversion means 8 and 9 for converting a parallel signal into a serial signal and converting a serial signal into a parallel signal.

The signal converters 8 and 9 of this embodiment are parallel signal / serial signal converters 8a and 9a for mutually converting parallel signals and serial signals, and optical transmitting and receiving modules for mutually converting electric signals and optical signals. 8b, 9b and serial buses 8c, 9c connecting the parallel signal / serial signal converters 8a, 9a and the optical transmitting / receiving modules 8b, 9b.
It is composed of The signal conversion means 8 converts the parallel signal /
Although the serial signal converter 8a is directly connected to the system bus 7, the signal converting means 9 includes a parallel signal / serial signal converter 9a, a serial bus 9c, and an optical transmitting / receiving module 9b formed of one printed board. The parallel signal / serial signal converter 9a is connected to the system bus 7 via the connector 6.

[0010] The form of the signal conversion means 8 and 9 is as follows.
Either of them can be directly connected to the system bus 7 as in the signal conversion means 8 or as in the signal conversion means 9.
You may make it connect to the system bus 7 via a connector. By adopting a method in which a single printed circuit board is used and the connector is connected to the system bus as in the signal converter 9, more signal converters can be connected. For example, instead of the option board 3, the signal conversion means 9 is connected to the system bus 7 via the connector 6, and as will be described later, an option replaced with a function adding connection device B connected via the signal conversion means is used. It is possible to connect the board 3 and other optional boards.

Reference numeral B denotes a connection device for adding a function to the CNC device A, which is a printed circuit board. The function adding connection device B includes a system bus 7 which is a parallel bus, signal conversion means 11 connected to the bus 7, and a plurality of connectors 6 connected to the bus 7. The signal conversion means 11 The signal converter 11 has the same function as the signal converters 8 and 9 described above, but the signal converter 11 includes two optical transmitting / receiving modules 11b1 and 11b2 in the parallel / serial signal converter 11a.
Are connected via the serial bus 11c. In addition,
Instead of directly connecting the signal conversion means 11 to the system bus 7, the signal conversion means 11 may be connected to the system bus 7 via a connector, similarly to the signal conversion means 9 described above.

CNC device body A and function adding connection device B
The optical transmission / reception module 8b (or 9b) and the optical transmission / reception module 11b1 (or 11b2) of the signal conversion means 8 (or 9) and the signal conversion means 11 are connected to the optical cable 1
2 and the CNC device main unit A and the function adding connection device B
Enables transmission and reception of signals between Then, the function of the CNC device is improved by connecting option boards 21 and 22 which are function elements for adding a function to the connector 6 of the connection device B for function addition. In addition,
FIG. 1 shows an example in which the optical transmission / reception module 8b of the signal conversion means 8 of the CNC apparatus main body A and the optical transmission / reception module 11b1 of the function adding connection device B are connected by the optical cable 12.

The parallel signals from the functional elements 1 to 5 such as the main board of the CNC apparatus main body A to the functional elements 21 and 22 connected to the function adding connection device B are transmitted via the system bus 7 as parallel signals / serial signals. The optical signal is sent to the converter 8a, converted to a serial signal, converted to an optical signal by the optical transmitting / receiving module 8b via the serial bus 8c, sent out to the optical cable 12, and sent to the optical transmitting / receiving module 11b1 of the function adding connection device B. Is converted into an electric signal, sent to a parallel signal / serial signal converter 11a via a serial bus 11c, and converted into a parallel signal. The signal converted into the parallel signal is transmitted to the option boards 21 and 22 of the functional elements via the system bus 7 and the connector 6.

On the other hand, parallel signals output from the option boards 21 and 22 of the function adding connection device B are converted into serial signals by the parallel signal / serial signal converter 11a via the connector 6 and the system bus 7. The signal is sent to the optical transmission / reception module 11b1 via the system bus 11c, converted into an optical signal, and sent to the optical cable 12.
The optical signal transmitted via the optical cable 12 is CNC
The signal is converted into an electric signal by the optical transmission / reception module 8b on the device body A side, sent to the parallel signal / serial signal converter 8a via the system bus 8c, converted into a parallel signal, and converted into a parallel signal via the system bus 7 and the connector 6 Are transmitted to the functional elements 1 to 5 on the CNC device A side.

In the example shown in FIG. 1, one function adding connection device B (signal conversion means 11 of) is connected to the signal conversion means 8 of the CNC apparatus main body A via the optical cable 12.
If it is desired to add more option boards than the number of connectors provided in the function adding connection device B, another function adding connection device is connected to another signal conversion means 9 of the CNC device main body A via an optical cable. By adding B, and adding an option board to the connector of the added function adding connection device B, an optional function of the CNC device can be further added.

The system bus 7 of the main body A of the CNC device
A signal conversion device connected by a connector of the type of the signal conversion means 11 to one of the functional elements 2 to 5, for example, instead of the option board 3, is connected to the system bus. It is also possible to add an option board 3 which has been replaced with an apparatus or an option board of a functional element to be added. Further, by connecting the function adding connection device to the function adding connection device in series, it is possible to add optional functions.

In the example shown in FIG. 1, when the function adding connection device B2 is connected to the function adding connection device B (hereinafter referred to as B1) connected to the CNC device main body A, the function addition connection device is connected. Optical transmitting / receiving module 11 of device B1
b2 and the optical transmitting and receiving module 1 of the function adding connection device B2
By connecting 1b1 (or 11b2) with an optical cable, a connection device B2 for adding a function can be added, and an optional function can be further added by connecting an option board to the connector of the connection device B2 for adding a function. In the same manner, by successively adding connection devices for adding functions, theoretically, optional functions can be infinitely added.

In this case, the output signals from the functional elements 1 to 5 such as the main board of the CNC apparatus main body A to the option board of the functional elements connected to the function adding connection device B2 are:
The signal is transmitted to the signal conversion means 11 of the function adding connection device B1 via the signal conversion means 8 and the optical cable 12, and is transmitted to the optical transmission / reception module 11b1, the parallel signal / serial signal converter 1
1a, it is sent out to an optical cable via the optical transmission / reception module 11b2, and transmitted to the function adding connection device B2. The signal transmitted from the option board mounted on the added function adding connection device B2 is also transmitted to the CNC device main body A by the same method, and the same processing is performed.

In the above embodiment, the signal conversion means 11 provided in the connection device for function addition B employs a parallel signal / serial signal converter 11a connected to two optical transmission / reception modules 11b1 and 11b2. , The signal conversion means 8 and 9 provided in the CNC apparatus main body A adopt a type having only one optical transmission / reception module.
The signal conversion means provided in the NC device main body A also employs a parallel signal / serial signal converter in which two optical transmission / reception modules are connected in the same manner as the signal conversion means provided in the function addition connection device B. Of course, it is good.

FIG. 2 shows a second embodiment of the present invention, in which a signal conversion means 11 in which two optical transmission / reception modules are connected to a parallel signal / serial signal converter is connected to a system bus of a CNC device main body. A network of devices is configured to add functions of a CNC device.

A parallel signal / serial signal converter 11a of a signal converter 11 is connected to the system bus 7 of each of the CNC devices A1 to A3... Directly or via a connector. Two optical transmission / reception modules 11b1 and 11b2 are connected to the parallel / serial signal converter 11a of each signal conversion means 11 via a serial bus 11c, and the optical transmission / reception modules 11b1 and 11b2 of each CNC device are connected.
The components are connected by an optical cable 12 to form a network of CNC devices.

A parallel signal output from a functional element such as a main board of the CNC device A1 is sent to a parallel signal / serial signal converter 11a via a system bus 7 of the CNC device A1, converted into a serial signal, and converted into a serial signal. 11c to the optical transceiver module 11b2 via
It is converted to an optical signal and sent out to the optical cable 12, where the CNC
The signal is converted into an electric signal by the optical transmission / reception module 11b1 of the device A2 and further converted into a parallel signal / serial signal converter 11a.
Is converted into a parallel signal and transmitted to each functional element of the CNC device A2 via the system bus of the CNC device A2. Alternatively, the optical transmission / reception module 11 of the CNC device A3 may be connected via the parallel signal / serial signal converter 11a and the optical transmission / reception module 11b2 of the CNC device A2.
b1, a signal is transmitted to each functional element of the CNC device A3 via the parallel signal / serial signal converter 11a. The same applies to the case where signals are transmitted from the other CNC devices A2 and A3 to the CNC device A1, and the function of one CNC device is improved by transmitting and receiving signals between the CNC devices A1 to A3. .

In the second embodiment, the communication between the CNC devices is performed by connecting the signal conversion device to the system bus of each CNC device. However, the above-described function adding connection device B is connected to the CNC device. And the function-added connection device B
The network may be configured by connecting the CNC devices via the network.

Further, in each of the above embodiments, the electric signal is converted into the optical signal and the signal is transmitted by the optical cable. However, the cable may be changed to the optical cable and transmit a normal electric signal. In this case, the signal conversion means 8, 9, 1
1 is a parallel signal / serial signal converter 8a, 9a, 1
A connector may be connected to 1a, instead of the optical transceiver module, and a cable for transmitting an electric signal may be joined by this connector to transmit the electric signal.

[0025]

According to the present invention, any number of option boards of functional elements can be added to the CNC device by the connection device for adding functions. Therefore, the number of option boards of functional elements added to the CNC device is limited. And also
The size of the option board to be added is not limited, and the function of the CNC device can be freely expanded. In addition, the CNC devices can be connected to each other to form a CNC network, and the functions can be expanded.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a block diagram of a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a conventional CNC device.

[Explanation of symbols]

A CNC device body B Function addition connection device 6 Connector 7 System bus (parallel bus) 8, 9, 11 Signal conversion means 8a, 9a, 11a Parallel signal / serial signal converter 8b, 9b, 11b Optical transmission / reception module 8c, 9c , 11c Serial bus 12 Optical cable

Claims (6)

[Claims] 1. A function adding connection device comprising: a system bus constituted by a parallel bus to which a plurality of connectors are connected; and a signal conversion means connected to the system bus for mutually converting a parallel signal and a serial signal. A signal conversion means for mutually converting a parallel signal and a serial signal connected to a system bus constituted by a parallel bus of a numerical control device main body constituted by a computer; and a signal conversion means of the function adding connection device. A method for adding functions of a CNC device, wherein the functions are added by connecting with a cable and a function element to be added via a connector of the connection device for adding functions. 2. One or more signal conversion means for mutually converting a parallel signal and a serial signal are connected to a system bus constituted by a parallel bus of a numerical control device main body constituted by a computer, and the signal conversion means is connected via the signal conversion means. A method for adding functions of a CNC device in which two or more numerical control devices are connected by a cable to form a network. 3. The method for adding functions of a CNC device according to claim 1, wherein said signal conversion means includes an optical transmission / reception module for mutually converting an electric signal and an optical signal, and said cable is constituted by an optical cable. 4. A signal conversion means of the connection device for adding functions, two connectors are connected, one connector is connected to the main body of the numerical control device via a cable, and the other connection is for connection of another function. 2. The method for adding functions of a CNC device according to claim 1, wherein the devices are connected via a cable. 5. The signal conversion means includes two optical transmission / reception modules for mutually converting an electric signal and an optical signal, wherein the cable is constituted by an optical cable, one connector is connected to a main body of the numerical control device, and the other is connected to the main body. 2. The CNC according to claim 1, wherein another connection device for adding a function is connected to the control unit.
How to add device functions. 6. The method for adding functions of a CNC device according to claim 1, wherein said signal conversion means is connected to the system bus via a connector connected to the system bus.