JPS63240298A - Rearrangement system for analog input data - Google Patents

Abstract

PURPOSE:To save man-hours for generating a program by providing a sampling buffer storing digital measured data in a prescribed order by a process adaptor, a control table designating changes in the storage order of the measured data and a channel controlling means for storing the data into a buffer while changing the order according to a command. CONSTITUTION:A channel controlling means 14 accesses a process adaptor 2 by the channel control mode to drive a multiplexer 20. The measurement data is selected in the order shown in a figure (b), the data is converted into a digital quantity by an A-D converter 21 and stored sequentially in a sampling buffer 15. Then a control table 12 is read sequentially from the top and the address data in the buffer 15 represented by the address data of the sampling buffer 15 is transferred to the address represented by the address data of the buffer to change the order of the measured data and the result is stored in the buffer 13. Thus, the arrangement of the measured data transferred in the memory 11 in this way is a desired order by an application task 171.

Description

[Detailed Description of the Invention] [Summary] A processing device that converts measurement data into a digital signal and receives it using a process adapter includes a sampling buffer that stores the measurement data that has been digitized in a predetermined order by the process adapter; A control table for specifying a change in the storage order of measurement data stored in the buffer, and a channel control means for changing the order and storing the measurement data in the buffer according to the instructions of the control table are provided.

[Industrial application field]

The present invention relates to a system for rearranging analog input data in a channel control mode when analog signals are input to a digital processor via a process adapter.

[Conventional technology]

FIG. 3 (al is a diagram showing an example of a conventional analog signal input method.

FIG. 3 (bl is an explanatory diagram of a conventional analog signal input method.

In the figure, ■ is a processing device, 10 is a processor, 11 is a memory, 2 is a process adapter, 20 is a multiplexer, 2
1 is an A-D converter; 3. ~3. ．． are measuring instruments, 16 is a channel section, and 17. ~17. ．． are application tasks, 181 to 18., respectively. l are each sampling subroutines. The same symbols represent the same objects throughout all the figures below.

A large number of measuring instruments 31-3. , are connected to the processing device 1 via the process adapter 2.

The measurement data collected by the measuring instruments 3I to 3 are sequentially selected by the multiplexer 20 in the process adapter 2, and then converted into digital quantities by the A-D converter 21, and then sent to the processing device 1. Sent.

When the processing device 1 collects measurement data via the process adapter 2, the measurement data is collected in channel control mode in order to reduce the burden on the processor 10 of the processing device 1.

This channel control mode is a process similar to direct memory access DMA, in which the direct memory access circuit provided in the channel section 16 accesses the process adapter 2 and the obtained measurement data is processed without the processor 10 being involved. DMA transfer and store in Memo IJII.

When actually operating such a measurement system, the processor 10 performs application tasks 17. Operate according to the instructions. That is, application task 17. The sampling subroutine 1B operates in the channel control mode and drives the channel unit 16 to access the process adapter 2, and the process adapter 2 operates the multiplexer 20 to transfer the measurement data of each measuring device 31 to 3□. is sampled, converted into a digital quantity by the A-D converter 21, and then transferred to the memory 11.

At this time, the order in which the multiplexer 20 collects the measurement data of each measuring device 3° to 3° is as shown in Figure 3 (bl), the first is the measuring device 3I, the second is the measuring device 32, and the third is Normally, the order is as follows: measuring device 33, . . ., measuring device 3, and so on.

[Problem that the invention seeks to solve]

However, in order to actually operate such a measurement system, various application tasks 171 to 17. l,
Therefore, various sampling subroutines 18, -18.
．． is created. In this case, the measuring instruments used are almost the same, but the multiplexer 20 of the process adapter 2
Since data from the measuring instruments is sampled in a different order if the input terminals are connected in a different order, it is necessary to create and prepare a new application task and therefore a sampling subroutine, which poses the problem of cumbersome operation of the measurement system. there were.

The purpose of the present invention is to provide measuring instruments 3. connected to the input terminals of the sheet metal multiplexer 20. It is an object of the present invention to provide a method that can cope with the case where the order of . . . 37 changes without changing the input speed, that is, the sampling speed.

[Means for solving problems]

As shown in the principle diagram of FIG. 1, the above problem lies in the processing device 1 that converts measurement data into digital signals and receives them using the process adapter 2, and the process adapter 2 outputs digital signals in a predetermined order. A sampling buffer 15 for sequentially storing converted measurement data, a control table 12 for specifying a change in the storage order of measurement data stored in the sampling buffer 15, a buffer 13 for storing measurement data, and a channel control means 14 are provided. This is solved by

[Effect]

According to the present invention, when the processing device 1 receives measurement data from the process adapter 2, the channel control means 14 accesses the process adapter 2 in channel control mode, and the process adapter 2 digitizes the data in a predetermined order. The measurement data is stored in the sampling buffer 15. Next, the storage order of the measurement data stored in the sampling buffer 15 is changed according to the instructions of the control table 12 and stored in the buffer 13, resulting in the effect that data collection is made uniform.

〔Example〕

FIG. 2 (al is a diagram showing an embodiment of the analog input data rearrangement method according to the present invention.

FIG. 2 (bl is an explanatory diagram of the control table.

In the figure, 12 is a control table, 13 is a buffer, 14 is a channel control means, and 15 is a sampling buffer.

In the present invention, the processing device 1 is provided with a control table 12, a buffer 13, a channel control means 14, and a sampling buffer 15.

The channel control means 14 is in a channel control mode, that is, it drives the channel section 16 to control the process adapter 2.
is accessed and drives the multiplexer 20, as shown in Fig. 3 (
As shown in bl, the measurement data is selected in the order of measuring instrument 3° for the first one, measuring instrument 3□ for the second, measuring instrument 33 for the third, ... and measuring instrument 3° for the nth, and then After being converted into a digital quantity by the D converter 21, the sampling buffer 15
This task is to sequentially store the measured data in the buffer 13, then change the storage order of the measured data according to the instructions from the control table 12, and then store the measured data in the buffer 13.

The control table 12 is a table that specifies the storage order when the application task 17. stores the measurement data input from the process adapter 2 into the memory 11, as shown in FIG. and the storage address data of the sampling buffer 15 are stored in pairs.

In the present invention, ■Application task 17. specifies in the control table 12 the order in which measured data is stored in the memory 11.

■Application task 17. When collecting measurement data from the measuring instruments 31 to 37, first the channel control means 1
Start 4.

As described above, the channel control means 14 accesses the process adapter 2 in the channel control mode, drives the multiplexer 20, selects the measurement data in the order shown in FIG. After converting it into a re-digital quantity, it is sequentially stored in the sampling buffer 15.

Next, the channel control means 14 sequentially reads the control table 12 from the beginning and transfers the address data indicated by the address data of the sampling buffer 15 to the address indicated by the address data of the buffer, thereby changing the order of the measurement data and Store in.

(2) Next, the measurement data stored in the buffer 13 is transferred to the memory 11.

The measurement data transferred to the memory 11 in this manner is arranged in the order desired by the application task 171.

〔Effect of the invention〕

As explained in detail above, according to the present invention, by assigning names or numbers to sampling channels, it becomes possible to process different measurement systems with the same application task, reducing the effort of creating programs. There is a big effect that it can be saved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle of the present invention. FIG. 2 (al is a diagram showing an example of the analog input data sorting method according to the present invention. FIG. 2 (bl is an explanatory diagram of a control table. FIG. It is a figure which shows an example of the input method of an analog signal. FIG.3(b) is an explanatory diagram of the conventional input method of an analog signal. In the figure, 1 is a processing device, 2 is a process adapter, 31-
3□ are measuring instruments, 10 is a processor, 11 is a memory,
12 is a control table, 13 is a buffer, 14 is a channel control task, 15 is a sampling buffer, 16 is a channel section, 17. ~17. l is an application task, 18. -18n are sampling subroutines, 20 is a multiplexer, and 21 is an A/D converter. , Age E7. After entering QL□7ji1shijwoLnuzurb

Claims (1)

[Claims] A processing device (1) that converts measurement data into digital signals and receives them using a process adapter (2), the process adapter (2) outputting digital signals in a predetermined order. a sampling buffer (15) that sequentially stores the measured data, and a control table (15) that specifies a change in the storage order of the measured data stored in the sampling buffer (15).
2) A buffer (13) for storing the measurement data and accessing the process adapter (2) in channel control mode, and sampling the measurement data digitized by the process adapter (2) in a predetermined order. Buffer (1
channel control means (14) for changing the storage order of the measurement data stored in the sampling buffer (15) according to instructions of the control table (12) and storing the measured data in the buffer (13); ) is provided.