JPS636651Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a panel instrument used, for example, in a batch control system, and more particularly to a panel instrument in which parameters such as batch amount are set by key operations.

With recent advances in semiconductor LSI technology, microprocessors are also being applied to panel instruments used in batch control systems and the like. In this case, parameters are set using numerical keys or ink/deck keys. However, with the method using numerical keys, the front area of the panel instrument tends to be large, so if the area is narrow, the keys cannot be mounted, and with the method using ink/deck keys, there is a problem that setting operations take too much time. Furthermore, when it is desired to change only a specific digit from the current data, such as the batch amount in batch control, it is difficult to change only the specific digit while displaying the current data, either by using the numerical keys or by using the ink/deck keys. Furthermore, if you carelessly touch the number keys or ink/deck keys, incorrect settings may occur.

The present invention has realized a panel instrument that can easily change specific digits while displaying current data by key operation, and has parameter setting means that will not cause incorrect settings even if keys are touched carelessly. be.

FIG. 1 is a front view showing an embodiment of the panel meter of the present invention, and FIG. 2 is a block diagram of its parameter setting section. In both figures, 1 is a data display, and a 6-digit numerical display is shown. 2 is a parameter selection item display lamp; 3 is a parameter item display label; there are items such as batch setting value BATCH and upper limit flow rate setting value FLOWLIMIT. 4 is a parameter selection key, 5 is a digit selection key, 6 is a numerical selection key, and 7 is a set key. 8 is a flip-flop, which is set when digit selection key 5 is pressed;
It is reset when the parameter selection key 4 and set key 7 are pressed. 9 is memory,
Parameters such as BATCH and FLOWLIMIT are stored in a database structure. Reference numeral 10 denotes a parameter item selection circuit, which selects an item of setting data stored in the memory 9 and selects the display lamp 2 by operating a parameter selection key 4. Reference numeral 11 denotes a digit selection circuit, which selects a digit by operating a digit selection key 5.
Reference numeral 12 denotes a numerical value selection circuit which changes the contents of a specific digit selected by the digit selection circuit 11 by operating the numerical value selection key 6. A selector 13 selects the memory 9 side when the flip-flop 8 is reset, and selects the numeric selection circuit 12 side when the flip-flop 8 is set. 14 is a data buffer memory into which data selected by the selector 13 is written. A zero suppression circuit 15 suppresses the contents of the buffer memory 14 to zero when the flip-flop 8 is reset. 16 is a circuit for changing data into a display pattern; 17 is a decimal point buffer memory in which the decimal point position of the data selected from the memory 9 is written; 18 is a data display drive circuit, and the setting data is the contents of the data buffer memory 14;
The decimal point position causes the display 1 to display the contents of the decimal point buffer memory 17. This drive circuit 18 is supplied with the flange clock CP, the output of the digit selection circuit 11, and the output of the flip-flop 8, and is configured to flash the digit of the digit selected by the digit selection key 5 in the setting mode. There is.

In the instrument of the present invention configured as described above, first, in the display mode, the flip-flop 8 is reset, and the data in the memory 9 selected by the parameter selection key 4 is written to the buffer memory 16, and then zero-suppressed and the data is displayed. Displayed on device 1. Display data is UP/DOWN
Selection is made using the parameter selection key 4 of the expression. That is, when the UP side ▲ is pressed, the lighting position of the item number display lamp 2 goes up by one, and when the DOWN side ▼ is pressed, the lighting position goes down by one and the item is changed. The data for that item is displayed on the display 1, while information regarding the unit of data is written in the column of the item display label 3 where the lamp is lit. For example, in the case of batch setting value BATCH, Kl, upper limit flow setting value
For FLOWLIMIT, it is Kl/h.

Next, press digit selection key 5, flip-flop 8
is set, a setting mode is entered, and data transfer from memory 9 to buffer memory 14 is prohibited. The resulting display is fixed at the current data, yet without zero suppression, with the highest digit flashing to indicate that the highest digit is selected. Each time the digit selection key 5 is pressed, the flashing digit is cyclically shifted to the right one digit at a time, and the digit to be changed is selected. By pressing the numerical value setting key 6, the numerical value of the selected digit is changed by cyclic increments. The changed value is displayed on the display 1 via the buffer memory 14. By repeating this operation and pressing the set key 7 after preparing the setting data on the data display 1, this setting data will be written to the memory 9 and the flip-flop 8 will be reset to return to the display mode and the changed settings will be displayed. Display data with zero suppression. If you wish to cancel the setting, press the parameter selection key 4 without pressing the set key 7, and the flip-flop 8 will be reset, canceling the setting mode and returning to the display mode.

In this way, it is possible to change only the numerical value of a specific digit by specifying the digit while displaying the current data, so the setting operation can be done in a short time, and there are only a few parameter selection keys, digit selection keys, numerical setting keys, and set keys. Parameters can be selected and set by key operation. Press digit selection key 5 again,
Since the setting data will not be changed unless the numerical value setting key 6 is pressed and then the set key 7 is pressed, the triple door system prevents erroneous settings from being made even by carelessly touching the keys. Furthermore, since the current data is displayed without zero suppression in the setting mode, digit selection can be made easily even when changing to data with a larger digit than the current data.

In the above example, the selected digit is always flashed in the set mode, but as shown in the block diagram of Fig. 3, when the numerical setting key 6 is operated, even if the flashing is stopped to make the numerical value easier to read. Alternatively, the brightness may be increased by that order of magnitude. Further, a decrement button may be provided as the numerical value setting key 6 in addition to the increment button. In this case, numerical value setting becomes easier.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the instrument of the present invention;
FIG. 2 is a block diagram showing one embodiment of the parameter setting section, and FIG. 3 is a block diagram showing another embodiment of the parameter setting section. 1...Data display, 4...Parameter selection key, 5...Digit selection, 6...Numeric value setting key, 7...
Set key, 8...Flip-flop, 9...Memory, 14...Buffer memory, 15...Zero suppression circuit, 18...Data display drive circuit.

Claims (1)

[Scope of utility model registration request] a data display, a parameter selection key that selects the data displayed on this data display, a digit selection key that selects the digit of the data displayed on the data display, and a parameter selection key that selects the digit of the data displayed on the data display; A panel instrument equipped with a numeric setting key that changes the numerical value of a digit, and a set key that sets the data set with the digit selection key and the numeric setting key in memory.