JPH02267828A - Program type time switch - Google Patents

Abstract

PURPOSE:To prevent erroneous erase of a program content except when erase is desired by operating a setting means when a epecified mark is displayed on a display means to set an empty data as a time data. CONSTITUTION:In the erase of a determined set information, which is conducted by the same processing and operation as setting of time information, an operator pushes a set key 7 when the display column of time information is -, and the display column of minute information is --, whereby - and -- are set as operation time information, and erase processing is conducted. Namely, in this program type time switch, a setting means is operated to conduct the erase operation only when a specified signal is displayed, and except for this, even if any key is operated, there is no fear of erroneously erasing the program.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a programmable time switch, and particularly to a programmable time switch having a feature of operating time setting.

(B) Conventional technology With conventional programmable time switches, for example, to set operating times such as on time and off time, the hour and minute keys are operated to update the hour and minute digits on the display. Then, when the desired hour/minute is reached, the set key is pressed. If you want to erase the set operating times, etc., that is, the programs, ■ Call up the set programs one after another, display the operating times on the display, and ■ When the program you want to delete is displayed, press the The erase key must be pressed.

(c) Problems to be Solved by the Invention In general, program contents are sequentially recalled not only when erasing the program as described above, but also when it is desired to confirm the program contents. Therefore, if you press the erase key to erase the contents displayed on the display at that time, as with the conventional programmable time switch mentioned above, if you accidentally press the erase key while checking the program, There was also a problem with programs being erased.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a programmable time switch in which program contents are unlikely to be erased by mistake except when erasing is desired.

(d) Means and operation for solving the problems The programmable time switch 7 of the present invention includes a display for displaying time information, a display updating means for changing the display contents of the display by key operation, and an operation. The apparatus includes a setting means for setting the content displayed on the display as time data when the display is updated, and the update content of the display updating means includes a specific symbol in addition to the numerical value, and the specific symbol is set as time data. When the setting means is operated when the time data is displayed, empty data is set as time data.

In this programmable time switch, even when erasing operating time data, the display updating means is operated.
When the time information displayed on the display is changed and a specific symbol other than a numerical value (for example, -m=, etc.) is displayed, the setting means is operated to set data corresponding to this specific symbol. In other words, erase data is set. With this program-type time switch, when a specific symbol is displayed, the setting means is operated to perform the erasing operation, and there is no risk that the program will be erased by mistake even if any other operations are performed. do not have.

(E) Examples The present invention will be explained in more detail with reference to Examples below.

FIG. 2 is a front panel diagram of a programmable time switch showing one embodiment of the present invention.

This front panel includes a timer/pulse key 1 for inputting switching between timer operation and pulse operation, an output "on" and "off" switch 2 for switching input and output, an erase key 3,
It is provided with a mode key 4, an hour key 5, a minute/pulse width key 6, a set key 7, a day of the week key 8, a specific day of the week key 9, and a display 10.

However, when the erase key 3 is operated, all programs are erased, and it is usually provided in a recess so that it cannot be easily operated from the front, and is pressed with the tip of a screwdriver or the like.

Further, the day of the week key 8 and the specific day of the week key 9 are not directly related to the present invention.

The mode key 4 is a key for switching the operation mode each time it is operated. The minute/pulse width key 6 is a key operated to set minutes or pulse time width. The set key 7 is a key for setting contents by operation.

FIG. 3 shows the configuration of the internal electronic circuit of the programmable time switch according to the above embodiment.

Timer/pulse key 1, output “on” “off” J switch 2
, erase key 3, mode key 4, hour key 5, minute/pulse width key 6, cent key 7, etc., are sent to the CPU 11.
It is now being incorporated into the The CPU 1 has functions such as a process for setting a predetermined operation time based on the input mode and key input signals, a timekeeping function, and a function for reading, confirming, and erasing the set program. The set program is set and stored in the memory 12. Further, the time information at the time of setting or the read time information is displayed on the display 10.

The set time information is stored in the memory 12, for example, as in the memory map shown in FIG. In the same figure, 1. DAT (1), DAT (2), ..., DA
T (16) is data consisting of pairs of on time and off time of a plurality of set time information, and the hours and minutes are set and stored in the corresponding area. Here, odd number D
AT indicates on information, and even numbered DAT indicates off information. This indicates that eight types of time on/off information are set and stored.

Next, the operation of the programmable time switch of the above embodiment will be explained with reference to the flowcharts shown in FIGS. 1(A) and 1(B).

At the start, the operating state is in normal operation, and first it is determined whether mode key 4 has been pressed [Step 7 ST (
(hereinafter referred to as ST)1]. If the mode key 4 is pressed here, the STI determination becomes YES, and then the mode shifts to the time setting mode, and if necessary, the time is set as appropriate. Furthermore, in this state, it is determined whether or not the mode key 4 has been pressed (Sr
2) When mode key 4 is pressed, the judgment of Sr2 is YE.
S, and then moves to operation time setting mode. This operation time setting mode is a feature of the present invention.

First, the variable N is set to 1 (Sr3). This N is memory 1
This corresponds to a counter for counting data values of setting data DAT(1) to DAT(16) of No.2. Therefore, next time, the data of DAT (N), that is, DAT (1) will be displayed on the display 10 (5T4), and the DA at this time
When T(1), data is stored in register WH and the same <D
Store data for AT(1) in register WM. Here, when setting the normal operating time, the operator first looks at the hour digits on the display 10, determines whether the numerical value is the desired time data, and then sets the desired time. The hour key 5 will be operated to obtain the numerical value. When the hour key 5 is operated, the judgment as to whether the hour key was pressed becomes YES at Sr1, and the contents of the register WH are incremented by 1 (Sr
1) Correspondingly, the time display on the display 10 is also incremented by one. Next, it is similarly determined whether the minute key 6 has been pressed (Sr1). First, when the hour key is updated and increased, the determination is NO, and then it is determined whether the set key has been pressed (STIO). This judgment is also No while the hour key 5 is pressed, and then the STI
Return to step 1 and determine whether the mode key has been pressed. In this case as well, the normal determination is NO, and while the numerical value of the hour digit is being updated, the processing of Sr1, Sr1, ≦T8.5TIO1STII is repeated. Under this condition, each time the hour key 5 is pressed, the contents of the display 10 change from AM1 to AM2.
, . . . PMII, and -1 and other specific symbols are also displayed.

When the hour key 5 has been operated, that is, the desired time has been set, the minute key 6 will be operated next. Each time the minute key 6 is operated, a number from 00 to 59 is displayed. Of course, in this process, every time the minute key 6 is pressed, the judgment of Sr1 becomes YES, and the contents of register WM are incremented by 1 (Sr1).
At the same time, the displayed content will also be updated uniformly. In this case, the updated values are also updated and displayed in addition to the changed values from OO to 59, as well as special symbols and other codes.

When setting the operating time, the desired time information is stored in register W) [and register WM by appropriate operations of the hour key 5 and minute key 6, and by looking at the display state, The operator will press set key 7. As a result, the judgment of 5TIO becomes YES, and 5TIO becomes YES.
Moving to T12, the contents of register WFI -, register W
It is determined whether the content of M is m-.

In the case of normal time information setting, this judgment is No, and then the contents of register WH are changed from AMO to PMII.
, and the contents of register WM are 0 to 59 (ST13). If this condition is not met,
It assumes that the settings have not been made correctly and displays an error message (
ST18), return to Sr1. On the other hand, 5T
If the determination in step 13 is YES, the contents of register WH are transferred to the DAT(1) time area of memory 12, which is also register W.
Store the contents of M in the area for DAT (1) (ST1
4), and increments the counter N by one step, that is, from 2 to 5.
T15), then determine whether the variable N is 17 or not 5T16
), if No, return to Sr1 and perform the next N=2
In other words, the process moves on to setting the time information of DAT(N). 5T1
If N is 17 at 6, it means that the DAT setting has been completed, so N is returned to 1 and the process returns to Sr1.

As described above, normal time information setting is performed.

When deleting predetermined setting information, it is performed by the same process and operation as for setting time information, but the operator presses the cent key 7 when the time information display digit is m-. This sets - and m- as the operation time information and performs the erasing process. In this case, 5T
12 becomes YES, the contents of register WH are stored in DAT (N) of memory 12, and the contents of register WM are stored in DAT (N) of memory 12. In other words, the contents of register WM are stored in DAT (N) of memory 12. Time area, DAT (N
) will store - and -1, respectively. Next, the process moves to Sr10 and it is determined whether N is an odd number. Here, if N is an odd number, the data map in Fig. 4 shows ON information, and since the ON information and OFF information are to be erased together, Sr10 is YE.
In the case of S, the contents of the next data are also set as the erased value, so move to Sr11 and write the contents of register WH and register WM in the time area of DAT (N+1) and the minute area of DAT (N+1). In other words, - and m- are stored respectively. Then, set the variable N to N+2,
That is, it advances to process the next pair of ON data and OFF data, and returns via STI and 6.5T17 in the same way as above. In addition, if N is an even number in 5T20, the judgment is No, and even-numbered data in FIG. 4 indicates off information. Therefore, if this off information is m-, the previous data and on information are In order to erase the data at the same time, 5T23 sets the register WE in the DAT(N-1) hour area and the DAT(N-1) minute area.
(stores the contents of register WM, that is, 1, and in this case, increments N by 1 to read the on information of the next on/off data 5T24), then 5T
It will move to 16th.

As a result of the above processing, - and m- are stored as programs in the target set time information, and as a result, the programs are erased. Note that the codes for - and - stored in the memory 12 are 0.
It is convenient to use code F because it is distinguished from information.

(f) Effects of the Invention According to this invention, when setting time information, the updated display contents are sequentially displayed and erased, including special symbols such as --1st etc. in addition to displaying the time data. When the time information is displayed in this special information, the special information is set by operating the setting means, so that the program setting information can be erased. The conditions for this deletion are when the time setting information is displayed on the special symbol and when the setting means is operated, so the program will be deleted even if any other key is pressed. Therefore, when a program is read out for confirmation, for example, there is no chance that the program will be accidentally erased due to malfunction, and the advantage is that confirmation and other processing can be performed with peace of mind.

[Brief explanation of drawings]

FIGS. 1(A) and 1(B) are flowcharts for explaining the operation of a programmable time switch according to an embodiment of the present invention, and FIG. 2 shows the front panel of the programmable time switch. 3 is a block diagram showing the internal electronic circuit of the programmable time switch, and FIG. 4 is a diagram showing a data map of the memory of the internal circuit. 4: Mode key 6: Minute/pulse width key 10: Display, 12: Memory.

Claims (1)

[Claims] (1) A display device that displays time information, a display updating device that changes the display content of the display device through key operations, and a setting device that, when operated, sets the content displayed on the display device as time data. In a programmable time switch, the updated contents of the display updating means include a specific symbol in addition to the numerical value, and when the setting means is operated when the specific symbol is displayed on the display means, empty data is displayed. A programmable time switch characterized by being set as time data.