JPH0545169B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to electronic scales.

BACKGROUND ART Generally, electronic scales have various specifications depending on the store, region, country, etc. in which they are used, and it is necessary to set specifications according to each. Conventionally, such specification switching settings have been performed using a dip switch. Here, if the settings of a small number of specifications are to be changed, such a deep switch method may be used.
In practice, for example, one specification setting has an 8-bit configuration, and in order to make five specification settings possible, 40
Bits are used.

Problems to be Solved by the Invention However, in order to be able to comply with the specifications in each country, a considerable number of specifications are required, and when trying to perform switching with such a deep switch, such Many I/O ports will be used for the deep switch, which is disadvantageous.

SUMMARY OF THE INVENTION The present invention has been made in view of these points, and it is an object of the present invention to provide an electronic scale that can easily change specification settings and can accommodate various specifications.

Means for Solving the Problems The present invention provides a nonvolatile memory that stores specification data, and sets a specification setting mode in which the specification data in the nonvolatile memory is switched bit by bit by inputting a bit number using a numeric keypad. This is what I did.

Function Since the specification data is stored in the non-volatile memory as data of a predetermined number of bits, it basically functions in the same way as specification setting using a dip switch. Here, if it is desired to change the data in order to correspond to various specifications, the data can be changed directly by simply inputting the bit number to be changed using the numeric keypad, making it easy to change the data. Since the specification data after this switching setting is stored in non-volatile memory, it is maintained even if the power is turned off.

Embodiment A first embodiment of the present invention will be described based on FIGS. 1 to 3. First, FIG. 1 shows a block diagram of the control system of the electronic scale. PAM1 and ROM2
The weighing data from the load cell 4 is taken in via the A/D converter 5 to the CPU 3 to which the load cell 4 is connected. Further, an operation section 6 equipped with a numeric keypad, mode setting keys, etc. is connected to the CPU 3, and a display section 7 for displaying weight, unit price, price, etc. is also connected.

Therefore, in this embodiment, a nonvolatile memory 8 connected to the CPU 3 is provided. This non-volatile memory 8 stores specification data in the form of 8-bit combinations of 1's and 0's, such as "10101010", as in the case of a dip switch.

In such a configuration, the specifications of the electronic scale are regulated by the specification data stored in the nonvolatile memory 8. The specification data stored in the non-volatile memory 8 is switched and set by operating the operation section 6 to set the specification setting mode. When this mode is set, the specification data stored in the nonvolatile memory 8, such as "10101010", is displayed in the weight and unit price display columns of the display section 7, as shown in FIG. 2a.
Data changes in this mode are controlled by the CPU 3 based on ten key operations on the operation section 6, and are directly performed bit by bit. Here, the numeric keypad operation is performed according to the flowchart shown in FIG. 3 by key-inputting the bit number. For example, when the specification data is displayed on the display section 7 as shown in Figure 2a, if you press the key "1" on the numeric keypad, the first data from the left of the displayed 8-bit data will be displayed. For example, if the data is 1, the first data is changed to 0 as shown in b of the figure. This changed data is written and stored in the nonvolatile memory 8 under the control of the CPU 3. As a result, the specification data becomes "10101010". Furthermore, if you press the key "2" on the numeric keypad and enter bit number 2, this will instruct you to change the second data from the left of the specification data displayed on the display section 7, and even if it is 0 as shown in the figure, Ba,
As shown in c in the same figure, it is switched to 1 and set. Similarly, Figure d shows the switching setting state (corresponding to the displayed content) when the key "7" is operated on the numeric keypad, and Figure e shows the switching setting state (corresponding to the displayed content) when the key "5" is operated on the numeric keypad. .

In other words, in this embodiment, by inputting the bit number to be changed using the numeric keypad while looking at the display on the display section 7 that displays the specification data stored in the non-volatile memory 8 as it is, even if the previous data is 0, If it is 1, it is changed to 1, and if it is 1, it is changed to 0, and each time it is written into the nonvolatile memory 8, the specification data is changed and set. If we consider the specification data stored in the non-volatile memory 8, it is 8-bit data such as "10101010", and the CPU 3 reads this data and determines whether each bit is ON or OFF. It will function in the same way as in the case of Furthermore, as described above, switching and setting of specification data can be easily performed by operating the numeric keypad. As a result, specifications from all over the world can be accommodated on a single chip.
It is also possible to put it in the CPU, and it is easy to change it.
It is possible to achieve multifunctionality at low cost. Since it is a non-volatile memory 8, even if the power is turned off, the specified specification data is maintained until it is newly changed, so that it maintains the same function as a dip switch.

In addition, in this example, 8-bit specification data was used as in the case of a general deep switch, but
The number of bits may be set appropriately.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. In this embodiment, a plurality of pieces of specification data, for example four, are stored in the non-volatile memory 8 on different pages P1 to P4 (therefore, 8 bits x 4 = 32 bits), and the switching settings are made. This is what I did. In this case as well, the specification data switching setting is performed by setting the specification setting mode. First, when this mode is set, the specification data stored on the first page of the nonvolatile memory 8, for example "00010001", is
It is displayed on the display section 7 as shown in FIG. At this time, "P1" indicating the page is displayed in the price field. here,
The specification data on this first page does not need to be changed, so when you press the page change key to change the page, such as the clear key used on scales, the display section 7 shows a non-volatile message as shown in Figure b. The specification data stored on the second page of the gender memory 8, for example "01010101", is displayed together with the page "P2". If you want to change the second bit from the left regarding the contents of the specification data on the second page, press the "2" key on the numeric keypad as in the previous embodiment, and the result will appear as shown in c in the figure. The data of the second bit is changed from 1 to 0. For example, if this switching setting is incorrect, if you press the key "2" again on the numeric keypad, the second bit data returns from 0 to 1 as shown in d of the same figure, and
Return to the state before the change shown in . Fig. 4e shows a state in which the specification data of the third page of the non-volatile memory 8 is displayed by pressing the page change key such as the clear key again to change the page, and Fig. 4f shows the state where the specification data of the third page of the non-volatile memory 8 is displayed. By pressing the clear key or the like again in order to do so, a state is shown in which the specification data of the fourth page of the non-volatile memory 8 is displayed. Then, when the clear key or the like is pressed again, the screen returns to the first page, and the specification data of the first page is displayed as shown in g of the same figure. Data switching on each page is performed in the same way as in the above embodiment, as illustrated in the case of the second page (in Fig. 5, the processing according to the above embodiment is shown as intra-page processing). ).

According to this embodiment, it is possible to support even more specifications, and the switching settings can be made easier.

In this embodiment, the case of 4 pages has been described, but the number of pages can be set as appropriate, such as 5 pages.

Effects of the Invention As described above, the present invention stores specification data in a non-volatile memory, and when changing the specification data, it can be handled by key input using the numeric keypad as a specification setting mode. Not only can it have the same functionality as a deep switch, it is extremely easy to adapt to various specifications, and it does not occupy many I/O ports, making it advantageous in terms of control. .

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the first embodiment of the present invention, FIGS. 2 a to e are front views of the display unit during switching operation, and FIG. 3 is a flowchart of the specification setting mode.
4a to 4g are front views of the display section during a switching operation, showing a second embodiment of the present invention, and FIG. 5 is a flowchart. 8...Nonvolatile memory.

Claims (1)

[Claims] 1. A non-volatile memory storing specification data is provided, and a specification setting mode is set in which the specification data in the non-volatile memory is switched bit by bit by inputting a bit number using a numeric keypad. An electronic scale. 2 A non-volatile memory is provided in which a plurality of specification data are stored in different pages, and a page in the non-volatile memory is selected using a page switching key, and the selected page in the non-volatile memory is selected by inputting a bit number using a numeric keypad. An electronic scale characterized by having a specification setting mode in which specification data is switched and set bit by bit.