JPS59202534A - Method for recording data of decentralized computer controller - Google Patents

Abstract

PURPOSE:To record optional data of each controller without increasing the storage capacity by transmitting required data from the controller to a data recorder only when the recording is required. CONSTITUTION:Data outputted to each channel of a recorder is stored in a data recorder at each channel. No transmission/recording is conducted at first for the data recorder from the controller side and the transmission is not conducted before the data is selected. The data of 8 points (e.g., 0-7) is transmitted from each controller to the data recorder and when the data is not selected, a dummy signal is transmitted from each controller and a fixed number of points (8 points in this case) is transmitted at all times. Then, even if the program of each controller is changed, optional data of each controller is recorded without correcting the content of storage of the data recorder.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a computer-controlled data recording method, and in particular,
The present invention relates to a data recording method suitable for a distributed computing control device in which a plurality of controllers are commonly connected via a system transmission bus.

[Prior art]

Conventionally, in a distributed computing control device in which a plurality of controllers are connected via a system transmission bus under the control of a bus controller m1, in order to record the data of each controller, it is necessary to record the data in advance on a data recording device connected to the system transmission bus. The identification code of each controller's data to be processed is registered, and each controller always transmits data corresponding to the registered identification code. In the data recording device, from among these registered identification codes, the identification code of the data to be recorded is selected using a keyboard or the like, and is recorded on a recorder or the like. According to this conventional method, there is a limit to the amount of data transmitted from each controller to the data recording device due to transmission capacity limitations, so (1) the data that can be recorded is limited; (2) the controller (3) The number of controllers; (3) the number of controllers;
A drawback is that as the amount of data to be recorded increases, the storage capacity of the data recording device increases.

[Purpose of the invention]

It is an object of the present invention to provide a data recording system suitable for a distributed computer system, which allows arbitrary data recording of each controller and eliminates the need to modify the storage contents of the data recording device even if the program of each controller is changed. We are here to provide you with a method.

[Summary of the Invention] The key point of the present invention is that data to be recorded is not transmitted, stored, or stored all the time, but necessary data is transmitted from a controller to a data recording device only when recording is required. As a means for this, the identification code given from the external input and the channel A of the recorder in the data recording device are encoded,
It is transmitted to the controller as data search information for the controller.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of the hardware configuration of a distributed computing system σlql device. The master controller 2 is a controller that takes the b key between sub-loops and creates a command signal to the sub-loop controller 3. The sub-roof controller 3 performs control in sub-loop units based on command signals from the mask controller 2. Input processing controller 4
is for process signal input and correction. In the figure, 1 indicates a data recording device, a mask controller 2,
This is used to set data for the subloose controller 3 and input processing controller 4, and each controller 2.3.4
are coupled to a common serial transmission bus 23, and data transmission and reception between the controllers is performed via this serial transmission bus 23 under transmission commands from the bus controller 22. Hereinafter, the mask controller 2, subloop controller 3, and input processing controller 4 will be collectively referred to as a controller. In addition, in the figure, 5 is a switch, 6 is a manual operation device 7 is an actuator, 8 is a valve, 10 is a valve, 2
2 is a bus controller.

By the way, as shown in FIG. 2, the software that performs the arithmetic processing of the controller includes a specification table section 25 that describes the types of operations such as adders and integrators, the order of operations, etc., and stores the operation data and transmission data. a data section 26;
The fixed processing program unit 24 interprets the above table and data and executes calculations. FIG. 3 is an example of a control block diagram showing the contents of arithmetic processing in the controller. The content of this process is to calculate the deviation between the sensor input A010 and the set value AOII using the adder 30, to perform calculations based on this deviation using the proportional integrator 31, and to use the adder 32 to calculate the result and the preceding command A014. As a result, full output is output.

FIG. 4 shows a specification table section and a data section of a controller that executes arithmetic processing corresponding to the control blocks shown in FIG. 3.

The feeding control calculation process is executed in the following steps.

1. The periodic activation management program shown in FIG. 2 is periodically activated by a timer, refers to the periodic activation management table,
This starts the process input/output processing program and other programs at the specified cycle. When the program is started, it refers to the table in the specification section, reads data from the data name section, and writes the results to the data section.

In the case of control calculations, the control calculation processing program sequentially decodes the contents of the calculation order table starting from the first address. This will be explained below using FIG.

At the beginning of the calculation order table, calculation blocks (20 in this example) to be processed by the controller are stored, and this value is first set in a counter. and,
Decipher the contents of the table's next memory. The starting address of the calculation specification table is stored after the next memory address.

In other words, the fifth place in the operation order table is 1'-260.
0j is stored, and the control calculation processing program is 2
Refer to the contents of address 600. 260 from address 2600
Specification information of the addition operation block 30 is stored at address 5. First, from grotJ in address 2600, it is known that the specification table is for an addition operation block, so the program sequentially decodes the @ in addresses up to address 2605 and executes addition operation. Control 1 constants such as gains are stored in the C data table, and their address is the first address C0 of the C data table of the addition calculation block 30.
Calculated from 10 and the type of block. On the other hand, the values of the input signals are stored at addresses A010 and A011 of the A data table, and the result of calculation based on these signal values is stored at address kA0.12, and the calculation processing of the calculation block 30 is completed. Next, the program extracts the 6th part of the operation order table and its contents 1'-2610
From J, we now move on to the calculation process of the proportional-integral calculation block of the calculation block 31. Execute all performance v4 processing using the same procedure as above, and set the total number of blocks initially set in the counter to 20.
When the number of processed blocks matches 7, the sub-needle calculation process is ended.

For controllers with the above software processing,
A data selection/display method in the data recording device of the present invention will be described.

FIG. 5 shows the configuration of the data input device [vinegar KB and display device DISP] of the data recording device 1. Data input device KII-
It consists of alphabet keys, numeric keys, function keys, and control keys. The display device DISP now displays what data is being output from each channel of the recorder.

Here, the identification code representing recorded data is defined as follows. That is, since the recorded data can be specified as input/output signals of the calculation block in the control block diagram, the name of the controller to which the calculation block belongs,
An identification code (hereinafter referred to as TAGNO) is a combination of parameter names indicating the calculation element type, calculation order, input/output, etc. of the calculation block. In the example shown in FIG. 5, the recorded data is represented by the controller name S2, the calculation element name FG (function generator), and the third output in the calculation order +0UT.

An operation method for registering all data in the recorder of the data recording device will be explained according to the flowcharts shown in FIGS. 5 and 6.

First, when function keys B and BCOD are pressed, R is displayed in the display @ position. Next, select the recorder channel. Here, when you press 2 on the numeric keypad, 2 will be displayed and the TAGNO of the data currently recorded in channel 2 will be displayed.
82FG Q 30U'l'' is displayed.Next, when you input the change key S, 'I'AGNO disappears temporarily, and you press the TAGNOS IAl)05 (JUT'i key) that you want to change.This data is changed to the point in Figure 4. Corresponds to number A012.This changes the output signal to the recorder.

The processing within the data recording device and controller that corresponds to the above operations will be explained.

As shown in FIG. 7, data to be output to each channel of the recorder is stored in the data recording device for each channel. (In the figure, it is Cl0 to 31.) The above output data is selected by the above-mentioned operation, but before being selected, it is not transmitted or recorded to the data recording device from the controller side, and the selected data is not transmitted or recorded from the controller side. It will be transmitted for the first time.

That is, before the above operation, the recorder output data C
H2 has a TA of 82 FG and 03 (,)UT.
Data represented by GN (J) is stored, and this data is transmitted from the controller S2 and input into the data recording device as received data.After the selection operation, new data is stored in the received data from the controller S1. 8l-
Data corresponding to AD-05-OUT will be added.

In the figure, eight points of data from 0 to 7 are transmitted from each controller to the data recording device, but when no data is selected, dummy signals are transmitted. A fixed number of points (in this case 8 points) is always being transmitted. This number depends on whether you want to record uJ points simultaneously from one controller.

More detailed means for realizing the above will be explained. FIGS. 8 and 9 show table configurations within the data recording device. The AO channel number table shows which controller the data displayed on each AO channel is sent from.
O is stored. A transmission data NOI table is provided for each controller, and the transmission order of transmission data from the controller to the data recording device (one per data NOI) is provided for each controller.
j: indicates which channel of the A, 0 channel the transmitted data is used for, and whether the transmitted data is actually used for data recording or the in-use flag and the data being used. Number (medium counter for shipping)
including. The usage counter is equal to the number of 1s in the 1-history-in-use flag. Each controller also has a record data reception table, which stores data sent from each controller to the data recording device. The AO data table is a data table corresponding to each AO channel, and is obtained by transposing the contents of the record data reception table. FIG. 9 is a table for searching for 'I'AGNO, showing the correspondence between controller names and controller numbers. Each calculation element table stores the starting address of each variable table corresponding to the keyed-in calculation element. Each parameter table is provided for each calculation element, and the parameter number is calculated from the keyed-in parameter name.

Next, a method for selectively recording data using these tables will be explained according to the flowchart of FIG. 10.

Now, when the AO channel is selected by key-in, the current TAGNO will be displayed, but if you key-in S and the new TAGNO, the channel number in the AO channel NO table will be displayed.
Controller N compatible with 2.

(/20) is searched, so use this as controller N
Change to O/10. Next, the controller N in the current system
Decrease the in-use counter of the o/20 transmission data NO table by 1 from 3 to 2, search each AO channel NOi, and set the in-use flag i IJ on the part that is 2 (data NO1). . new controller N
Add 1 to the in-use counter from 2 to 3 in the transmission data NO table corresponding to O/10, change the 1 in-use flag or reset data NO2 part to in-use 1, and add a new AO channel NO2. Register. Meanwhile, the keyed-in new 'I'AGNO8IAT)0
50UT is determined by the parameter N according to the table in Figure 9.
O is searched. The parameter NO represents the ranking in the calculation specification table within the controller. In this example, calculation order No. 5 and parameter No. 1 serve as search information, and data No. 2 is sent to controller S1 of controller No./10. In the S1 controller, A data AO12 is changed from parameter NO to data N according to the calculation order.

All you have to do is put it on the 2nd part and send it.

〔Effect of the invention〕

According to the present invention, even if there is a program change on the controller side, arbitrary data of each controller can be recorded without modifying the contents of the data recording device, and the storage capacity of the storage device can be increased or decreased. Maintainability is dramatically improved because there is no .

[Brief explanation of the drawing]

Fig. 1 is a system configuration diagram of the distributed calculation control FTL device steam of the present invention, Fig. 2 is a software configuration diagram of the controller of the present invention, Fig. 3 is a block diagram of flill 91 of the present invention, and Fig. 4 is a system configuration diagram of the present invention. FIG. 5 is a detailed diagram of the human power unit of the data recording device of the present invention, FIG. 6 is an operation 70-chart of the data recording device, and FIG.
The figures are schematic data flowcharts of the present invention, Figures 8 and 9.
The figure is a table configuration diagram in the data recording device of the present invention.
FIG. 0 is a data recording selection flowchart according to the present invention. Figure 4 Figure 9 Side 70

Claims (1)

[Claims]] A control calculation program is written in all calculation blocks, and the calculation specifications, calculation order, and calculation data of each red rendering block are stored in advance in a storage device as a table, and these are read out from the storage device. A data recording method in which transmission specifications, transmission order, and transmission data are stored in a storage device in advance as a table, and the transmission command is read out from the storage device to perform transmission processing. In this step, the identification code of the arithmetic block for which data recording is to be performed is given to the data recording device as an external input of the recording device, and the data recording device is connected to a control controller corresponding to the identification code and this control controller. Create data search information and transmission data order in l-o-ra,
2. The control controller searches for the data to be recorded and transmits it to the data recording device according to the data search information and the transmission data order, and the data recording device transmits the data to be recorded. 1. A data recording method for a distributed computing control device, characterized by recording.