JPH0667718A - Input selection/transfer device - Google Patents

Abstract

PURPOSE:To arbitrarily and selectively transfer input data from various input switches and plural input parts for supplying an input signal, to an NC device, etc. CONSTITUTION:The device is provided with data table parts 20a-20n for storing input data from an input device 14, a strobe signal generating part 18 for generating a strobe signal for showing a fact that valid input data is stored in a data table, based on a fact that an input is executed, and strobe table parts 22a-22n for storing the strobe signal from the input device 14 in accordance with a storage position of the data table parts 20a-20n in which the input data from the input device 14 is stored. In such a state, the strobe table parts 22a-22n are monitored, and when the strobe signal is stored, an input transfer part 26 transfers the input data of the data table parts 20a-20n corresponding to the strobe signal to an NC device 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input selection transfer device applied to, for example, an NC device for controlling a machine tool or the like, and in particular, a plurality of types of machine tools having different specifications can be applied to the same NC device. And an input selection transfer device.

[0002]

2. Description of the Related Art In recent years, labor saving in many manufacturing plants,
A machine tool having an NC device is used for efficiency. These machine tools include lever switches for sending tables, spindle rotation, work lights, coolant, various switches for selecting display data on external indicators attached to pendants, cycle start, cycle stop, field hold, ON or OFF signal from each switch used when operating machines such as chip conveyor, tool chuck, table indexing, etc. is NC
Supplied from the device side.

A key signal such as a key code read from a key matrix assigned to an alphanumeric key or a function key, a joystick inclination is converted into a voltage, and this is digitally converted into analog data or a manual pulse generator. An integrated value obtained by adding or subtracting the number of pulses sent from (MPG) is supplied.

In such an NC device, for example, in machine tools having different specifications, the above-mentioned switches and input signals have different installation positions depending on the machine, and the type and quantity of switches and input signals used. Are generally different.

It is uneconomical and time-consuming to connect an NC device having a different circuit structure to each of such changes in the input, so that it is necessary for a machine tool having different specifications. Since the same NC device is used, the following method has been conventionally used.

That is, a method of selecting and switching the data from the input section by hardware using a jumper wire or a DIP switch to supply the switch signal and the input signal to the machine tool, in advance in the internal memory of the NC device. , The data from the input section is set to be valid or invalid, and when the software of the NC device supplies the data from the input section to the machine tool, only valid data is selected. Method, hardware that reads the jumper wire and DIP switch settings by software and identifies whether the data from the input section is valid or invalid according to a predetermined rule inside the NC device and supplies it to the machine tool A method that is a combination of a software method and a software method is used.

In addition to the NC device as described above, it may be necessary to selectively switch input signals from a plurality of input sections for a personal computer. That is, a personal computer is unlikely to be provided with an external switch, dial, volume, etc. like an NC device, but at the time of initial setting of an expansion board or the like, switching by a jumper wire on the expansion board or software in the personal computer. A method similar to that of the NC device is adopted, such as switching by a wear switch and switching by a configuration file read at startup.

[0008]

In the case of the hardware method using the above jumper wires or DIP switches, the number of jumper wires or DIP switches is the number of selection and switching input sections (the above switch signals and input signals). However, there is a problem in that the number and the cost of wiring are increased, which is troublesome and costly. Further, when incorporating in an NC device or a machine tool, complicated and large amount of setting is required, so that there is a possibility that human error may occur in wiring, setting, etc. of jumper wires and dip switches. .

The settings of the jumper wire and the DIP switch by the above hardware are read by software, and the validity and invalidity of the data from the input section are identified and supplied to the machine tool according to a predetermined rule inside the NC device. With this method, the complexity of wiring and setting can be reduced by software, but there is essentially the same problem as in the above case.

In the method of selecting valid / invalid of data from the input section by the above software, in advance,
It is necessary to store in the internal memory something like a reference parameter for selecting whether the data is valid or invalid by some method. As a method thereof, there are a method of writing the program in a ROM together with a control program, a method of inputting and editing to an internal memory from an input device such as a keyboard, and a method of inputting to an internal memory from an external device such as a tape reader.

In the case of using the first ROM, R is different for each machine tool, or even if only one machine switch is different.
OM changes. Therefore, since it is necessary to have a large number of ROMs, the management becomes complicated, and there is the inconvenience that a new ROM has to be recreated even if one switch is added due to additional construction of the machine.

In the method of inputting and editing data from an input device such as a keyboard to an internal memory or the method of inputting data from an external device such as a tape reader to the internal memory, input data from the keyboard input device itself or the input device itself such as a tape reader is used. It becomes impossible to switch selectively.

As described above, each of the above prior arts has a problem that the input section cannot be freely added or changed at any time. For this reason, for example, in an NC device in which a keyboard device is mounted in the remote input unit, if input from the keyboard device cannot be performed, a command is input from the keyboard device to search the cause of failure from the information of the NC device. There is also the problem of being unable to do so.

That is, in the above case, it is impossible to identify the location of the failure, either the failure of the keyboard device itself, the failure of the communication means between the remote input unit and the NC device body, the failure of the receiving side of the NC device body. Becomes This is because the input data from the keyboard device cannot be stored in the internal memory even if any of the above failures occurs.

In this case, even if a keyboard interface is separately prepared and a new keyboard device is connected to this interface, the ROM for input selection is provided.
Input from the keyboard device cannot be performed unless operations such as replacing the switch or changing the settings of jumper wires or dip switches are performed. Further, even if keyboard interfaces that do not require jumper wires or DIP switch setting switching are prepared in parallel, in the internal memory corresponding to the interface that is not connected, inconstant data will result and malfunction will occur.

The present invention has been made in order to overcome the above-mentioned problems and eliminates the need for switching means for a plurality of input sections, and allows input data from various input switches and a plurality of input sections for supplying input signals. It is an object of the present invention to provide an input selection transfer device capable of transferring information to a machine tool or the like arbitrarily and selectively.

[0017]

In order to achieve the above object, the present invention provides an input selection transfer device having an input connection section for connecting a plurality of input devices, wherein the input data from the input device is Generates a strobe signal indicating that valid input data is stored in the data table section based on a plurality of data table sections stored corresponding to the input connection section and the input of the input data. Strobe signal generating section, a plurality of strobe table sections for storing strobe signals from the input apparatus in association with the data table section storing input data from the input apparatus, and the plurality of strobe table sections Is monitored and the strobe signal is stored,
And an input transfer unit for transferring the input data of the data table unit corresponding to the strobe signal to a predetermined device.

[0018]

For example, in a machine tool having an NC device,
Lever switch for sending table, spindle rotation, work light, coolant, various switches for selecting display data of external display attached to pendant, cycle start, cycle stop, field hold, chip conveyor, tool chuck, table Indexing, etc.
ON or OFF signal from each switch used when operating the machine, key signal such as key code read from alphanumeric key or function key, analog data by tilt of joystick, manual pulse generator (MP
The pulse integrated value and the like from G) is supplied to the machine tool from the NC device side.

In the input selection / transfer device according to the present invention, the above-mentioned input data is input from each input device to the NC device,
It is stored in the data table section of the storage means.

On the other hand, the input selection transfer device is provided with a strobe signal generating section for generating a strobe signal indicating that valid input data is stored in the data table, based on the input. The strobe signal from the strobe signal generating section is stored in the strobe table section of the storage means in association with the storage position of the data table section in which the input data is stored.

The input transfer section monitors the strobe table section, and when the strobe signal is stored, transfers the input data of the data table section corresponding to the strobe signal to the NC unit.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An input selection / transfer device according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing the configuration of an NC system to which the input selection / transfer device 12 of this embodiment is connected. The input selection transfer device 12 includes a plurality of input connection connectors 16a to 16n to which a plurality of input devices 14 can be connected.
In this case, the input device 14 is assumed to be connected to the input connector 16a.

Input data DTa from the switch s of the input device 14 is stored in the data table section 20a of the data storage means 24 of the input selection transfer device 12 via the input connector 16a. The input device 14 has a strobe signal generation unit 18 therein, and the states of the switches s and the like of the input device 14 are constantly monitored by the strobe signal generation unit 18, and when the states of the switches s and the like of the input device 14 change,
Strobe signal STa indicating that the input data DTa from the switches s etc. is stored in the data table section 20a.
To occur.

The strobe signal STa generated by the strobe signal generator 18 is associated with the data storage means 20a in which the input data DTa from the input device 14 is stored via the input connector 16 and the data storage means. It is stored in 24 strobe table units 22a.

The strobe signal ST stored in the strobe table section 22a is constantly monitored by the input transfer section 26, and the strobe signal ST is stored in the strobe table section 22a.
When a is stored, the input data DTa corresponding to the strobe signal STa and stored in the data table unit 20a is transferred to the machine tool 30 via the NC device 28.

If the data storage means 24 is constituted by a dual port RAM, the input data DTa to DTn and the strobe signals STa to ST are input from the input device 14 side.
At the same time that n is written, the input data DTa to DTn and the strobe signals STa to STn can be read from the input transfer unit 26 side. Further, the input device 14 is a sub-microprocessor, and the input selection transfer device 12 can be applied to a device including a main processor. Also,
The strobe signal generating section 18 can also be provided on the input selection / transfer device 12 side.

The NC system 10 according to the present invention is basically constructed as described above, and its detailed operation will be described below.

FIG. 2 shows an operation flowchart of the strobe signal generator 18. In step S1, the strobe signal generation unit 18 monitors a change in the data state of the switch s or the like of the input device 14. When the data state is changed, that is, when the input is performed, the input data DTa is stored in the data table unit 20a in step S2, and then the strobe signal S is stored in step S3.
The Ta is stored in the strobe table unit 22a.

FIG. 3 shows an operation flowchart of the input transfer section 26. In step S4, the strobe reset state is set by the previous process, and thereafter, the input device 14 is set.
When the data state of the switch s or the like changes, that is, when an input is made, the input data DTa is stored in the data table section 20a and the strobe signal STa is stored in the strobe table section 22a.

When there is a data request from the NC device 28 to the input device 14 or the like in step S5, the strobe table portions 22a to 22n are searched in step S6. If the strobe table portion 22a has the strobe signal STa (step S7), the input data DTa of the corresponding data table portion 20a is transferred to the NC device 28 in step S8, and the strobe table portion 22a is rewritten to the strobe reset state (step S8). S9). If there is no strobe signal STa (step S7), the no data code is transferred to the NC device 28 in step S10.

FIG. 4 is a diagram showing another embodiment of the input selection transfer device according to the present invention. In FIG. 4, two input connectors 16a and 16i have the same input device 14
By connecting a and 14i, it is possible to perform the same operation with respect to the NC device and the like from different locations. Also in this case, it is not necessary for the NC device 28 shown in FIG. 1 to be aware that a plurality of input devices 14a and 14i having the same function are connected, and even if one input device 14a fails, The operation can be continued by the other input device 14i.

FIG. 5 is a diagram showing another embodiment of the input selection transfer device according to the present invention. In FIG. 5, the input device 14 and the remote input device 34 installed at a place apart from the NC device and the like are connected to the two input connectors 16a and 16n. The remote input device 34 can input data to the input selection / transfer device 12 via the reception section 32 by the communication line 36. Also in this case, the NC device etc.
The input data DTa is transmitted via the communication line to the remote input device 3
4 or the input data DTa is input from the input device 14 need not be considered at all.

FIG. 6 is a diagram showing another embodiment of the input selection / transfer device according to the present invention. In FIG. 6, the input devices 14a and 14b are connected to the input connection connectors 16a and 16b, and the communication line 3 is connected to the input connection connectors 16c and 16n.
Remote input devices 34a and 34n are connected via 6c and 36n and receivers 32a and 32n. Also in this case, as in the above-described embodiment, the NC device or the like need not be aware of the input device at all, and the input devices such as the same operation panel can be installed at distant positions. It is possible to perform the operations at the same time using the operation panel such as the one described above, or the operation panel installed in a remote office.

[0035]

According to the input selection / transfer device of the present invention, the following effects can be obtained. That is, in the input selection transfer device according to the present invention, it is possible to arbitrarily and selectively transfer input data from various input switches and a plurality of input parts supplying input signals to the NC device or the like. Therefore,
NC machines with different circuit structures are used for machine tools with different specifications, each with different installation positions and types of input signals and switches.
It is not necessary to connect the devices to deal with them, and it is possible to deal with the same NC device.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an NC system including an input selection transfer device according to the present invention.

FIG. 2 is an operation flowchart of a strobe signal generator.

FIG. 3 is an operation flowchart of an input transfer unit.

FIG. 4 is a diagram showing another embodiment of an input selection / transfer device according to the present invention.

FIG. 5 is a diagram showing another embodiment of the input selection / transfer device according to the present invention.

FIG. 6 is a diagram showing another embodiment of an input selection / transfer device according to the present invention.

[Explanation of symbols]

 10 ... NC system 12 ... Input selection transfer device 14 ... Input device 16a-16n ... Input connection connector 18 ... Strobe signal generation part 20a-20n ... Data table part 22a-22n ... Strobe table part 24 ... Data storage means 26 ... Input transfer Part 28 ... NC device 30 ... Machine tool

Claims (1)

[Claims] 1. An input selection / transfer device having an input connection unit for connecting a plurality of input devices, wherein a plurality of data table units store input data from the input device in association with the input connection unit; A strobe signal generation unit that generates a strobe signal indicating that valid input data is stored in the data table unit based on input of input data, and input data from the input device are stored. Corresponding to the data table unit, a plurality of strobe table units for storing strobe signals from the input device and a plurality of strobe table units are monitored, and when strobe signals are stored, the strobe signals are stored in the strobe signals. An input transfer unit that transfers the input data of the corresponding data table unit to a predetermined device, and Select transfer device.