JPH082726Y2 - Data access device for programmable controller - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to reading and changing setting data of a timer counter, data memory, etc. of a programmable controller,
The present invention relates to a data access device of a programmable controller that displays a monitor of a running state and a current value of data.

[Conventional technology]

When displaying and confirming the setting data of the timer counter in the user program of the programmable controller, the current value during operation, etc., and when changing these data, in the field of the system, the operability and A simple data access device that is not convenient in terms of size and only displays setting data and current values on a monitor is used.

This is, for example, a data access device a having a digital switch b and a data display device c as shown in FIG. 5. Numerical data is input by the digital switch b and the CPUe of the programmable controller main body d changes the display device c. The setting data is displayed.

In such a data access device, only a single data is set and displayed, but a plurality of data cannot be set and displayed.

There is also a data access device that has a CPU inside and can perform data communication with the CPU of the programmable controller body to set and display data.

Such a data access device has a built-in memory capable of storing a plurality of setting data, and when it is necessary to change the setting data due to a system change, etc., a plurality of data can be switched using a digital switch. The data is displayed, set, changed, stored in the memory, and sent to the programmable controller body to change the data.

[Problems to be solved by the device]

In the data access device of the programmable controller as described above, the numerical value displayed on the data display device at the time of changing the setting data has no means for distinguishing the data before and during the change from the data after the change. Moreover, it is not possible to confirm whether the changed data is actually stored in the memory.

Further, when the changed data is transferred to the programmable controller main body, it is not possible to confirm that the data has been transferred in the same manner.

In view of the above problems, the present invention provides a programmable controller data access device capable of confirming that setting data has been changed in a memory and confirming that data has been transferred to a programmable controller body. The purpose is.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a data access device, which is connected to a programmable controller main body and can display, set and change setting data according to a plurality of channels accessible in a user program of the programmable controller, A display device for the channel number and the setting data, a key switch for selecting the plurality of channels and inputting the setting data, a data change end switch, a data transfer switch, a storage means for the setting data, and the setting. Data identification means for indicating that the data is before and / or being changed, change confirmation means for indicating that the changed setting data is stored in the storage means, and the setting data in the programmable controller body. And a transfer confirmation means for displaying that the transfer has been performed. It constitutes a programmable controller data access apparatus.

Here, as the display device, a device including a channel number display portion and a setting data display portion can be used.

[Action]

The programmable controller data access device according to the present invention is configured as described above, and the data identification means indicates that the setting data is before or during the change, and the changed setting data is stored in the memory. Is displayed so that it can be visually confirmed by the change confirmation means.

Further, when the setting data is transferred to the programmable controller main body, the completion of the data transfer is visually displayed by the transfer confirmation means.

〔Example〕

 The details of the present invention will be described based on the illustrated embodiment.

FIG. 1 is a claim correspondence diagram of a data access device of a programmable controller according to the present invention.

That is, the data access device 1 of the present invention comprises a display device 2 for displaying a plurality of channels and setting data corresponding thereto, a key switch 3 for selecting a plurality of channels and inputting setting data, and a data change end switch 4. The data transfer switch 5, the setting data storage means 6, the data identification means 7 for indicating that the setting data is before and / or being changed, and the changed setting data are stored in the storage means 6. It has a change confirmation means 8 for displaying the information and a transfer confirmation means 9 for displaying that the setting data has been transferred to the programmable controller main body.

Here, the data identification means 7 and the change confirmation means 8 and the transfer confirmation means 9 are realized by a central processing unit (hereinafter referred to as CPU) 10 composed of a microprocessor, and the data bus of this CPU 10 is stored. CPU12 of the programmable controller main body 11 while being connected to the means 6
Is also joined.

FIG. 2 is a simplified explanatory diagram of the first embodiment of the data access device of the programmable controller according to the present invention.

The data access device 13 of this embodiment includes a CPU 14 and a RAM 15 which is a storage means for setting data, and a display device 16 and a key switch unit 17 are provided on the outer surface.

The display device 16 is composed of a channel number display section 18 for displaying the channel number and a data display section 19 for displaying setting data corresponding to the channel number, and an LED, a fluorescent display tube, a liquid crystal or the like is adopted, Usually 7 segment LED
Composed of.

The key switch section 17 is a channel selection key 20 for selecting a plurality of channels, and a numerical value input key for data setting.
21, a setting key 22 to be pressed when the data change is completed, a data transfer key 23 for transferring the setting data to the programmable controller main body, and the like.

The RAM 15 can store setting data corresponding to a plurality of channels, and the CPU 14 receives a signal from the key switch unit 17 and displays the setting data and the channel number stored in the RAM 15 on the display device 16, and , Changing setting data, transferring data to the programmable controller main body, and the like.

FIG. 3 is a flow chart of the first embodiment of the present invention.

When the channel selection key 20 is pressed, the channel number of the data displayed on the display device 16 changes, the channel number is displayed on the channel number display section 18, and the setting data in the RAM 15 corresponding to that channel is displayed on the data display section 1
Appears in 9.

Select the channel number for which you want to change the data, and change the setting data with the numeric input keys 21.

If even one of the numerical value input keys 21 is pressed, it is determined that the setting data has been changed, and the CPU 14 causes all the LEDs of the channel number display section 18 and the data display section 19 to blink.

From this, it is possible to easily visually confirm that the setting data is being changed.

When the channel number is selected, all LEs on the display device 16
It is also possible to make D blink, and at this time, the state before or during data change is displayed.

When the setting data is changed and the numerical value is confirmed, the setting key 22 is pressed.

When the setting key 22 is pressed, the CPU 14 updates the setting data corresponding to the channel number in the RAM 15 to the content displayed on the data display unit 19 and stops the blinking of the data display unit 19.

At this time, the channel number display section 18 continues to blink, and it can be confirmed that the setting data corresponding to this channel number has been changed and stored in RAM15. You can confirm that it is before transfer.

The setting data in which only the channel number display section 18 is in the blinking state is transferred to the programmable controller main body by pressing the transfer key 23.

That is, the CPU 14 is the CPU of the programmable controller main body.
And data communication with each other to transfer the setting data corresponding to the channel number.

At this time, it is determined whether or not the data transfer is correctly performed, and if there is an error, the channel number display unit 18 continues to blink and waits for the transfer key 23 to be pressed again.

When the data transfer is successful, the channel number display 18 stops blinking and all LEDs on the display device 16 are stopped.
To turn on.

From this, it becomes possible to visually confirm that the setting data corresponding to the channel number has been transferred to the programmable controller main body.

Even if the user changes the setting data, the setting key
If you forget to press 22, the changed data will not be stored in RAM15, and if you press transfer key 23 after the changed data is stored in RAM15, the data will be stored in the programmable controller body. No transfer, but
Even if a different channel is selected and the setting data is changed in such a state, it is possible to manage the information table as to whether the setting data of each channel number is being changed or has been transferred. , When the channel number is returned to, the entire display device 16 or the channel number display section 18 is displayed again.
By blinking, it can be displayed that the storage, transfer, etc. of the changed data are unprocessed.

In the first embodiment of the present invention as described above, all the display devices 16 are blinked during or before changing the setting data,
When the changed data is stored in the RAM 15, the blinking of the data display unit 19 is displayed, and after the changed data is transferred to the programmable controller main body, the blinking of the channel number display unit 18 is stopped and all the display devices 16 are turned on to set. During data change, it is possible to confirm the end of data change and the end of data transfer to the programmable controller main body.

FIG. 4 is a simplified explanatory diagram of a second embodiment of the data access device of the programmable controller according to the present invention.

The second embodiment is the same as the first embodiment except that the display unit 16 is provided with a change display unit 24 and a transfer display unit 25.

Here, the change display unit 24 and the transfer display unit 25 are configured by light emitting elements such as LEDs, and are provided on the outer surface of the data access device 13 at visible positions.

In the second embodiment thus configured, like the first embodiment, the channel selection key 20 is used to call the setting data of the channel number to be changed, and the numerical input key 21 is used to change the setting data. .

When the data change is started, the change display section 24 and the transfer display section 25 are turned on and the setting key 22 is pressed to display the change data.
When stored in the RAM 15, the change display section 24 is turned off.

Further, when the transfer key 23 is pressed and correct change data is transferred to the programmable controller main body, if the transfer display section 25 is turned off, the setting data is being changed, after the change,
The state after transfer to the programmable controller can be easily determined.

The change display unit 24 and the transfer display unit 25 can be turned on or blinked after the completion of each process such as data change and data transfer. Further, like the first embodiment, the channel display unit 18 and the data display unit 25 can be turned on and off. The blinking of the display unit 19 can be optionally used together, and is not particularly limited.

[Effect of device]

The programmable controller data access device according to the present invention is configured as described above, and the setting data for each channel can be identified during and / or before the change, after the data change, and after the data transfer to the programmable controller body. This prevents user's erroneous operation, forgetting to transfer changed data, and the like.

[Brief description of drawings]

FIG. 1 is a diagram for responding to claims of the present invention, FIG. 2 is a simplified explanatory view of a first embodiment of a data access device of a programmable controller according to the present invention, and FIG. 3 is a flow chart of the first embodiment of the present invention. FIG. 4 is a simplified explanatory view of the second embodiment of the present invention, and FIG. 5 is a conventional example explanatory view. 1: Data access device, 2: Display device, 3: Key switch,
4: Change end switch, 5: Transfer switch, 6: Storage, 7:
Data identification means, 8: Change confirmation means, 9: Transfer confirmation means, 1
0: CPU, 11: Programmable controller body, 12: CPU,
13: Data access device, 14: CPU, 15: RAM, 16: Display device, 17: Key switch part, 18: Channel number display part, 1
9: Data display part, 20: Channel selection key, 21: Numerical input key, 22: Setting key, 23: Transfer key, 24: Change display part, 25:
Transfer display.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Taiji Kuki 2-13, Akita-cho, Takatsuki-shi, Osaka, inside Keyence Co., Ltd. (72) Shigeaki Tani, 2-13 Aketa-cho, Takatsuki-shi, Osaka, Keyence Co., Ltd. (56) Reference JP-A-61-7931 (JP, A) Actually opened 63-175248 (JP, U) Actually opened 63-39705 (JP, U) Actually opened 60-100806 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A channel number and a setting in a data access device which is connected to a programmable controller main body and can display, set and change setting data corresponding to a plurality of channels accessible in a user program of the programmable controller. A data display device, a key switch for selecting the plurality of channels and inputting the setting data, a data change end switch,
A data transfer switch, a storage means for the setting data,
Data identification means for displaying that the setting data is before and / or being changed, change confirmation means for displaying that the changed setting data is stored in the storage means, and the setting data for the programmable controller A data access device for a programmable controller, comprising: transfer confirmation means for displaying that the data has been transferred to the main body. 2. A data access device for a programmable controller according to claim 1, wherein the display device comprises a channel number display section and a setting data display section.