JPH051887B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention is used as a recording needle for process monitoring, and is a process for displaying process data of multiple channels on a secondary element display such as a CRT display. The present invention relates to a data display device.

(B) Prior Art In general, recorders that record data in pen on chart paper have been used to monitor process data of multiple channels. Also, in recent years
Process data display devices that display process data of multiple channels in a chart format on the screen of a CRT display have been proposed and implemented.

By the way, in the field of industrial measurement, there are cases where process data from other channels is recorded or displayed, but if the pen-type recorder described above is to record data from a large number of channels, it is necessary to use a multi-pen type recorder. It is necessary to use multiple channels, which increases the size of the instruments and devices.On the other hand, if the data of all channels is displayed in a chart format on a process data display using a CRT display, The disadvantage is that the display lines of each data often overlap, making the displayed data very difficult to see. Conversely, displaying part of the channel data on a CRT screen has the disadvantage that the status of other channels cannot be fully grasped.

(C) Purpose In view of the above, it is an object of the present invention to provide a process data display device that is capable of grasping data of all channels, and displays a chart-like display of required channels in an extremely easy-to-read manner.

(d) Configuration In order to achieve the above object, this invention has the following features:
The current value data of all channels and some required channels are displayed as torrents on the screen of the CRT display. That is, the process data display device of the present invention includes channel number designation means for designating channel numbers of a plurality of channels and display color designation means for designating a display color, and also displays the current data of all channels on a two-dimensional display numerically. A current data display section is displayed, and a trend display section is formed in which only the channels specified by the channel specifying means are displayed in a chart shape in the color specified by the display color specifying means.

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

FIG. 1 is a block diagram of a process data display device showing one embodiment of the present invention.

In the figure, process data I1, I2, I3, . Each channel data taken by CPU2 I1, I2, I3...I1
2, the current data is stored in the data buffer memory 5, and is also stored in the external memory 7 via the interface 6.

A relatively large capacity floppy disk is used as the external memory 7, and process data from the past to the present is stored for each channel. Further, as the data buffer memory 5, a semiconductor IC memory having a smaller capacity than the external memory 7 is used.

A program for operating the CPU 2 is stored in the program memory 3. Calculation data and display data obtained in the course of program execution, as well as a specified display color and a specified channel, which will be described later, are stored in the working memory 4. A ROM is used as the program memory 3, and a RAM is used as the working memory 4.

The CRT display 9 displays a chart of the process data of the selected channel, that is, a trend display and the current data of all channels.The channel number and display color of the channel whose trend is displayed are entered. Settings are input from section 8.

FIG. 2 shows an example of the key device of the input section 8 and the display of the CRT display 9. As shown in FIG.

The input section 8 includes a color designation key 10 and a numeric keypad 11. As the color specification key 10, for example, a BLUE key, a GREEN key, etc.
A yellow key etc. are provided.

The screen of the CRT display 9 is formed of a current value data display section 12 and a trend display section 13.

The current value data display section 12 displays the current values of all channels from channel 1 to channel 12 in numbers, and the trend display section 13 displays six values specified by the color specification key 10 and numeric keypad 11 of the input section 8. Channel trends are now displayed in a chart form from the past to the current point.

The display color of each channel in the trend display section 13 is as follows.
The colors are assigned to each channel using the color designation key 10. The display color of each channel on the trend display section 13 and the display color of the corresponding channel number on the current value data display section 12 are made to be the same, so that the display color of each channel on the trend display section 13 is the same, and the display color of the number of the corresponding channel on the current value data display section 12 is the same. The display is displayed in the same color.

Which channel data from channels 1 to 12 is to be displayed on the trend display section 13 and in which color is to be displayed is selected using the numeric keypad 11 and the color designation key 10. In addition, the current value data display section 12
If the current value of each data value exceeds the alarm setting value of each channel, it is displayed blinking and an alarm is issued.

Next, the operation of the process data display device of the above embodiment will be explained with reference to the flowcharts shown in FIGS. 3 and 4.

First, channel selection and color selection of the six channels displayed on the trend display section 13 will be explained.

Display color designation and channel number designation are sequentially input by operating a pair of numeric keys of the color designation key 10 and the numeric keypad 11. That is, when the number key 2 for specifying the channel number is operated after the blue color specification key 10a, a key interrupt occurs as shown in FIG. 3, and the on signal of the blue color specification key 10a is activated. captured (step)
ST1), then the channel number input using the numeric keypad 11 is imported (ST2),
These input display colors and channel numbers are written on a table allocated to the working memory 4, as shown in FIG.
ST3). First, in response to the operation of the blue key 10a and the number key 2, BLUE and 2 are stored in association with each other in the table-like leading bunch as shown in FIG.

Similarly, by sequentially inputting the green key 10b and the channel number corresponding to this green key 10b, the channel number corresponding to the specified color will be written into the table storage area of the working memory 4.

As described above, in a state where a display color is assigned by interrupt processing by operating a color specification key, the normal operation is to sample the data of all channels at each sample time and store it in the data buffer memory 5. (Step ST11) and
The necessary data is transferred to the floppy disk, that is, the external memory 7 (step ST12). Note that the necessary data is transferred to the floppy disk because data that does not necessarily need to be stored from the past to the present for all channels from channel 1 to channel 12 can be removed by settings etc. It's becoming like that. Next, counter C for trend display and channel count is set to 0 (step ST13), and counter 1 is sequentially incremented by 1 (step ST14), followed by setting the display color (step ST15). Here, when C=1, the display color to be set is blue, as is clear from FIG. 5.

Subsequently, in step ST16, channel 2 is read from the C-th row, ie, the first row, of the table. As a result, channel 2 will be displayed in blue. Subsequently, in step ST17, it is determined whether the channel number is 0 or not, that is, whether C is 0 or not.

If this channel number is 0, it means that no color is assigned to a channel on which no trend is displayed, and therefore the next step ST18 is skipped. If the channel number is not 0, i.e. in the above example, the step
If the judgment in ST17 is NO, numbers and trends will be displayed in the display color set for the data of that channel. That is, the trend display of the channel 12 and the numerical display of the current value data display section 12 are performed in blue.

Next, it is determined whether C=6 or not (step
ST19), since it is not 6 initially, return to step ST14, add 1 to C, and perform the same process up to step ST19.

That is, the display color settings for the six channels to be trend-displayed and the corresponding channels are read out from the table, and each channel is trend-displayed and color-displayed in the corresponding color.

When the display colors and display channels for 6 channels are selected and called, the judgment in step ST19 becomes YES, and then step ST20 is performed.
The data of other channels that are not trend-displayed are displayed numerically and in white on the current value display section 12.

Then, it is determined in step ST21 whether sampling has ended or not, and while the sampling operation continues, the operations from steps ST11 to ST21 are repeated. During this time, the preset display colors and corresponding channel numbers are displayed in the respective designated colors on the trend display section 13, and the numbers on the current value data display section 12 are also displayed in the same color.

Although not explained in detail here, in step ST18 and step ST20, it is determined whether the current value data exceeds the set value, and if the current value data exceeds the set value, an alarm is generated and the current value data is is displayed blinking.

(F) Effect As described above, the process data display device of the present invention displays trends only for some selected channels out of a large number of channels, and displays only current value data for other channels. Because of this, the trend display section is not cluttered and only important data can be seen at a glance.

Furthermore, since the current values of all channels are displayed numerically on the current value display section, practical monitoring can be continued without losing sight of the current state of the data of each channel.

Additionally, since the numerical display does not take up much space, the trend display area can be enlarged accordingly, making important data easier to see. Moreover, since the settings of the channels to be displayed as trends can be easily changed, there is an advantage that only the necessary channels can be displayed in an easy-to-read manner, depending on the process situation.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a process data display device showing one embodiment of the present invention, Fig. 2 is a diagram showing the key layout of the input section of the same device and an example of the screen display of the CRT display, Fig. 3 and Fig. FIG. 4 is a flowchart for explaining the operation of the device according to the above embodiment, FIG. 3 is a diagram showing the key interrupt of the display color designation key, and FIG. 4 is a diagram showing the main flow of the device. ,
FIG. 5 is a diagram showing the storage area arrangement of the display color specification table. 2: CPU, 4: Working memory, 8: Input section,
9: CRT display, 10: Display color specification key, 1
1: Numeric keypad, 12: Current value data, 13: Trend display section.

Claims (1)

[Scope of Claims] 1. A process data display device that displays process data of a plurality of channels on a two-dimensional display, comprising means for specifying channel numbers of the plurality of channels, and display color specifying means for specifying a display color. and a current data display section for displaying the current data of all channels in numbers on the two-dimensional display, and only the channels specified by the channel specifying means are displayed in a chart shape in the color specified by the display color specifying means. A process data display device comprising a trend display section.