JPH03201107A - Control panel for numerical controller - Google Patents

Abstract

PURPOSE:To improve responseness to key operation and to surely inform a final state by storing up-to-date key data in a control panel, registering a depressed key switch and forming transmission data based upon the stored/ registered data. CONSTITUTION:A transmission data forming part 12 refers a key data status table 121 in each input of key data to compare the current data with the data in the table 121, and at the time of detecting a change in these data, sets up a corresponding flag in the 1st flag table 121 to '1' and updates the correspond ing data in the table 121. Flags are retrieved in response to sending timing, the flag in the 2nd flag table 123 corresponding to the flag '1' is set up to '1', its corresponding data are extracted from the table 121 and transferred to a key data transmission processing part 13. Since the flag transferred to the table 12 is initialized in the table 122, up-to-date key operation is registered in the table 122 and transmitted in the succeeding time. Thereby, the up-to-date data are always transmitted to a numerical controller 2 and responsiveness corresponding to the key operation of the control console 1 can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an operation panel for a numerical control device, and more particularly to a key data notification method for notifying the operating state of a key switch from the operation panel to the numerical control device.

(Prior Art) As is well known, a numerical control device is equipped with an operation panel that is a key data input device, and for example, as shown in FIG.
It is known that the operation panel 1 is configured to be portable and connected to the numerical control device W2 through a communication cable 3, so that the numerical control device 2 can be operated and controlled remotely. Although not shown, there is also a system in which the operation panel is fixed to the casing of the numerical control device, and even in this case, the two are connected via a communication cable. In addition, in FIG. 3, the numerical control device 2
Usually, a color display 31 and a key panel 32 are provided on the front surface of the device, and various control states of the device can be displayed and predetermined key operations can be performed.

By the way, as shown in FIG. 4, the conventional operation panel includes a plurality of key switches tti, a key data input processing section 41, a transmission data forming section 42 including a so-called first-in, first-out type transmission data buffer 421, and an I10. It basically consists of a key data transmission processing section 43, which is a port, and a CPU (central processing unit), not shown, which centrally controls each of the above-mentioned elements.

In FIG. 4, the operation panel 1 operates as follows. That is, the key data input processing unit 41 searches for the presence or absence of a change in the key state of each of the plurality of key switches 111, for example, at predetermined time intervals, forms key data for the key switch that has changed, and sequentially transmits the key data to the transmitted data. It is output to the forming section 42. In the transmission data forming section 42, the transmission data buffer 4
21 to sequentially store the input key data, and sequentially output the key data stored first to the key data transmission processing section 43. Then, the key data transmission processing section 43 successively transmits and notifies the numerical control device 2 of the key data input from the transmission data forming section 42 while maintaining synchronization.

(Problem to be solved by the invention) By the way, in a numerical control device, when the key switch is on
1/Since the mechanical system is controlled by the off state,
Responsiveness to key operations is important, and it is also important to be able to reliably notify the final state of key operations (which is specified by the key state of either the on or off state).

However, in the conventional key data notification method described above, all key data operated by a key is transmitted through the transmission data buffer, so it is difficult to balance the transmission notification interval for the numerical control device. Depending on the situation, for example, if a key switch is operated frequently, a queue is formed in the transmission data buffer. Since the key data in the transmission data buffer is notified sequentially from the top of the queue, the latest key data added to the last column of the queue will be notified after all of the preceding key data has been sent. , there is a problem that the responsiveness to key operations on the operation panel deteriorates.

Furthermore, in the above case, since the capacity of the transmission data buffer is finite, the transmission data buffer may overflow. In this case, there is a problem in that the state of the key switch indicating the final state of the key operation may not be notified.

Although it may be possible to solve this problem by increasing the data transfer rate to the numerical control device, it can be said that this is not necessarily an appropriate solution if the presence of chattering and the like are taken into consideration.

The present invention has been made in view of these problems, and its purpose is to provide an operation panel for a numerical control device that can improve responsiveness to key operations and can reliably notify the final state of key operations. There is a particular thing.

(Means for Solving the Problems) In order to achieve the above object, the operation panel of the numerical control device of the present invention has the following configuration.

That is, the operation panel of the numerical control device of the present invention includes: a plurality of key switches; a key data input processing section that monitors whether or not the state of each key switch has changed and outputs key data of the key switch that has changed; a transmission key data forming section that receives key data output from the input processing section, forms and outputs key data to be transmitted; and transmits the key data output from the transmission key data forming section to the numerical control device via the communication cable. In an operation panel of a numerical control device comprising: a key data transmission processing unit; the transmission key data forming unit includes a key data status table in which the key status of each key switch is registered; and a change in the key status of each key switch. first and second flag tables in which flags indicating presence/absence are registered; upon receiving the output of the key data input processing section, referring to the key data state table and determining if there is a change in the key state of the corresponding key switch; a registration processing unit that operates a corresponding flag of the first flag table to a predetermined state and also updates and registers the corresponding key data of the key data state table with the input new key data; key data sending timing; in response to operating the flags in the second flag table corresponding to all or part of the flags operated in the first flag table to a corresponding predetermined state; The first flag corresponding to the
initializing the flags in the flag table of
A transmission processing section that extracts key data corresponding to a flag operated in the second flag table from the key data state table and outputs it to the key data transmission processing section as transmission data. That is.

(Function) Next, the function of the operation panel of the numerical control device of the present invention configured as described above will be explained.

In the key data forming section, when key data is input, it refers to the key data status table and compares the previous and current key data, and if there is a change in the key status, the corresponding flag in the first flag table is changed, for example. This flag is set to "1" and the corresponding key data in the key data state table is updated regardless of whether or not this flag is operated.

Then, in response to the sending timing of the key data, the first flag table is searched for a flag that is set to 1, and the flag in the second flag table that corresponds to the 1 flag is set to 1, and this flag is set to 1. The key data corresponding to the "1" flag in the second flag table is extracted from the key data state table and handed over to the key data transmission processing unit as transmission data.At this time, in the first flag table, the second flag The flags posted to the table are initialized, so when a key operation is performed afterwards,
It is registered in the first flag table in the above procedure, and
It will be sent next time.

In this way, the latest key data is always sent to the numerical control device, improving responsiveness to key operations on the operation panel. In addition, a table is provided that can grasp the status of each key switch, and two types of flag tables are provided, one for key operation registration and one for sending, so that key operations can be reliably detected and memorized. The final state of the system can be reliably notified.

(Example> Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an operation panel of a numerical control device according to an embodiment of the present invention. In the present invention, the transmission data forming section I2 is divided into a registration processing section 101, a transmission preparation processing section 102, and a key data state table 121. and key data change flag table (
The first flag table) 122 and the key data transmission flag table (second flag table) I23 are mutually exclusive. Note that the other configurations are the same as the conventional one.

Key data state table! 21 is the key switch 11
1. Each key data is registered in association with a corresponding key switch. Also, the flag table (122
, 123), flags (key data change flag, key data transmission flag) indicating whether or not the key state of each key switch ill has changed are registered in association with the corresponding key switch.

The operation of the transmission data forming section 12 according to the present invention will be explained below with reference to FIG.

The key data input processing section 11 monitors the state of the key switch 111 by sampling, as in the conventional case, and outputs the changed key state of the key switch to the registration processing section 101 as key data.

In the key data state table 121, in the initial state, key data indicating the key state of the corresponding key switch in the initial state is registered. Also, the flag table (122, 12
3), each flag (key data change flag, key data transmission flag) is set to, for example, "O" in the initial state.

When the latest key data is input from the key data input processing unit 11, the registration processing unit 101 performs the operations of steps 201 and 202 shown in FIG. Compare the key data of the corresponding key switch (initial value or previously registered one) with the new key data input this time, and if there is a change, set the corresponding key data change flag in the key data change flag table 122. In addition, in step 202, the key data of the corresponding key switch in the key data status table 121 (the initial value or the one registered last time) is updated to the new key data input this time. The operation is performed every time key data is input from the key data input processing section 11.

Note that if the same key switch is operated multiple times and the key status changes from "on" to "off" to "on", the key data change flag will be set to "1" at the first change from "on to off". , and then holds "1" even if the key state changes from "off to on". The reset operation for setting this key data change flag to "0" is performed by the transmission preparation processing unit 102, which will be described later.On the other hand, the key data with the last key state "ON" is registered in the key data state table 121. That is, the key data state table 121 does not hold old key data, but always registers and holds the latest key data.

Next, when key data is input from the transmission data forming section 12, the key data transmission processing section I3 transmits it to the numerical control device 2 while synchronizing each time, as in the conventional case.
The manner in which data is sent from the transmission data forming section 12 to the key data transmission processing section 13 in this embodiment is different from the conventional example.

That is, in this embodiment, a period in which a predetermined number of key data are continuously transmitted and a slight pause period are repeated, and the transmission preparation processing section 102 of the transmission data forming section I2 performs key data transmission processing. When the timing for sending data to the unit 13 arrives, the operation shown in FIG. 2(b) starts.

First, in the first step 203, the key data change flag table 122 is searched to detect the key data change flag set to 1', and the key data that is set to "1" in the key data transmission flag table 123 is searched. Set the key data transmission flag corresponding to the change flag to “1”
Then, the key data change flag in the key data change flag table is reset to "O". This reset operation is performed only for the key data change flag that has been transferred to the key data transmission flag table 123. This measure is taken in consideration of the case where a key operation is performed within the transmission period to the numerical control device 2.

Next, “1” is set in the key data transmission flag table.
Step 204) of extracting the key data corresponding to the key data transmission flag set in the key data status table 121), and extracting the extracted key data (
transmission data) are sequentially output to the key data transmission processing section 13 (step 205>).

Then, from the key data transmission processing section 13 to the numerical control device 2
Each time key data is notified to the numerical controller 2,
Since there is a response indicating the quality of the received key data (not shown), if the transmission is normal, the determination result in step 206 is affirmative (YES), and the corresponding key data transmission flag is set in step 207. Performs transmission end processing to reset to "O".

On the other hand, if the transmission was not performed correctly, the determination result at step 206 is negative (NO), so the process returns to step 204, where the transmission data is recreated from the key data status table 121 and transmitted again. do.

(Effects of the Invention) As explained above, according to the operation panel of the numerical control device of the present invention, the latest key data is held in the key data status table, and the key switch that has been operated is Since it is registered in the flag table and transmission data is formed based on this flag, the latest key data is always transmitted to the numerical control device, improving responsiveness to key operations on the operation panel. In addition, the transmission data buffer that causes overflow is eliminated, and a table is provided that can grasp the status of each key switch. Also, two types of flag tables are provided, so the final status of key operations can be reliably notified. There are effects such as being able to.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the configuration of the operation panel of a numerical control device according to an embodiment of the present invention, FIG. 2 is an operation flowchart of the transmission data forming section, and FIG. 3 is a perspective view showing the relationship between the numerical control device and the operation panel. 4 are block diagrams showing the configuration of an operation panel of a conventional numerical control device. 1...Operation panel, 2...Numerical control device, 3...Communication cable, 11...
Key data input processing section, 12... Transmission data forming section, 13... Key data transmission processing section, 3
1...Color display, 32...
・Key panel, 41... Key data input processing section, 42... Transmission data forming section, 43...
...Key data transmission processing section, 101... Registration processing section, 102... Transmission preparation processing section, 111
...Key switch, 121...Key data status table, +22...Key data change flag table, 123...Key data transmission flag table, 421... ...Transmission data buffer.

Claims (1)

[Claims] a plurality of key switches; a key data input processing section that monitors whether or not the state of each key switch has changed and outputs key data of the key switch that has changed; and a key data input processing section that receives and transmits key data output from the key data input processing section. a transmission key data forming section that forms and outputs key data to be used; and a key data transmission processing section that transmits the key data output from the transmission key data forming section to the numerical control device via a communication cable. In the operation panel; the transmission key data forming section includes a key data state table in which the key state of each key switch is registered, and a first and second key data state table in which a flag indicating whether or not the key state of each key switch changes A second flag table; upon receiving the output of the key data input processing section, the key data state table is referred to, and if there is a change in the key state of the corresponding key switch, the corresponding flag of the first flag table is changed to a predetermined value. a registration processing unit that operates on the state and also updates and registers the corresponding key data in the key data state table with the input new key data; The flags in the second flag table corresponding to all or part of the flags that have been manipulated are operated to a corresponding predetermined state, and the flags in the first flag table that correspond to the operated flags in the second flag table are a transmission processing unit that performs initialization, and extracts key data corresponding to a flag operated in the second flag table from the key data state table and outputs it to the key data transmission processing unit as transmission data; An operation panel for a numerical control device, characterized in that it is equipped with;