JPS60146354A - Information processing system - Google Patents

Abstract

PURPOSE:To increase the operating speed regardless of the reading cycle of the control data by providing a priority area to a main memory of a computer to inform an electric center to a computer interface. CONSTITUTION:A computer interface 3 reads out a priority area 7 and checks the change of a priority bit. When this change is detected, the control data 5 is read out and transferred to a master station TC2. At the same time, the interface 3 reads out the data 5 successively in a comparatively slow fixed cycle and transfers it to the station TC2. The area 7 has a bit inversion for each change of operation by a computer 4 regardless of the interface 3. While the interface 3 always reads out the area 7 and detects a change of operation. Then the interface 3 checks an electric center with an operation request and reads out the control data of the requested electric center.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention provides a 1# information processing method, in particular, a total of 8 to
[Technical Background of the Invention] Conventionally, control data is passed from a computer to a TO using a computer interface device 'JL' (hereinafter referred to as CPIF). )
Figure 1 shows a computer system in a conventional system control system. 1 is a controlled station (hereinafter referred to as a slave station) TC12 is a control center (hereinafter referred to as a master station) TC, 3 is a computer interface, 4 is a computer, 5 is a control data area of the main memory of the computer, 6 is the main station of the computer The display data area from the slave station TC in the memory is shown.

Therefore, in order for the computer interface 3 to extract all of the control data from the computer data area 5 of the main memory, the control data of all electrical stations is sequentially read out in cycle IJ and delivered to the TC of the master station 2.

[Problems with background technology]

The conventional method used does not have a waiting time of one read cycle at the maximum, but it takes time to send data to the four operation targets that you want to operate. Furthermore, when the number of electrical stations increases, the control data cannot be delivered evenly to all electrical stations unless the reading cycle of the control data is made faster. However, there is a limit to how fast the cycle can be made.

[Purpose of the invention]

The present invention has been made with the aim of solving the above-mentioned problem, and is an information processing system that speeds up the system by notifying the computer interface of the electric station when the computer operates the electric station where the computer is located. The purpose is to provide a method.

[Summary of the invention]

The present invention provides an area (hereinafter referred to as a priority area) in the main memory of the computer that informs the computer interface of the electric station when the computer operates the electric station, and the computer interface constantly monitors this priority area. When there is a change, the control data of the relevant electric station is transferred to the TC, and the control data of multiple electric stations, such as selective measurement, is read out sequentially at a relatively slow regular cycle.
Jl + all data and TCVc receiver are intended to be transferred.

[Embodiments of the invention]

Embodiments will be described below with reference to all the drawings. FIG. 42 is a block diagram of an embodiment of the information transmission system according to the present invention. Second
In the figure, 1 is the slave station TC, 2 is the master station TC, 3 is the computer interface, 4 is the computer, 5 is the control data area of the main memory of the computer, and 6 is the slave station TC of the main memory of the computer.
7 indicates the priority area.

FIG. 3 shows the configuration of the priority area, in which electrical station numbers are assigned in bit units. FIG. 4 shows a time chart of operations at a certain electrical station and changes in bits of the corresponding electrical station in the priority area. A is fish selection, no control, B is selection, no control, C is selection, 1UIJ 1il.

D indicates the change of priority bits in the operation. Note that the change in bits is repeated by inversion t. The computer interface 3 in FIG. 2 reads out the priority area 7 in FIG.
Check the change in the destination bit in the figure.@If there is a change at this time, the computer interface 3 in FIG. 2 reads the control data 5 in FIG.
Pass the C receiver. In addition, the computer interface shown in FIG. 2 sequentially reads out the control data 5t shown in FIG. 2 at a relatively slow regular period and delivers it to the master station TC2 shown in FIG. A beep every time there is a change in operation regardless of
- Invert. In addition, the computer interface 3 constantly reads this priority area 7 to detect changes, checks the electrical station for which the operation is requested, and reads out control data for the requested electrical station.

There are two ways to use the priority area described above, such as setting the electric station number and registering the electric station number in a list.In the former, the computer sets the electric station number in the priority area and resets it to 0 using the computer interface. The following processing is the same as the bit processing. This method is preferred for 2-3 electric stations. In addition, the latter is a method in which the computer registers the electric station number t list in the priority area and extracts the electric station number from the list using the computer interface.The following processing is the same as the bit processing. , Priority delivery for multiple electrical stations.

〔Effect of the invention〕

As explained above, according to the present invention, by having a priority area, it is possible to speed up the operation regardless of the read cycle, even if the read cycle of control data corresponds to the speed of the operation.

[Brief explanation of drawings]

Fig. 1 is a computer system diagram in a conventional system control system, Fig. 2 is a block diagram of an embodiment for explaining the information transmission method according to the present invention, Fig. 3 is a configuration diagram of a priority area, and Fig. 4 is a priority area diagram. It is a time chart of bit change of an area. 1...Slave station TC, 2...Parent/il TC. 3... Computer interface, 4... Computer, 5... Control data area of main memory of computer, 6...
・Data area from the slave station TC in the main memory of the computer, 7
...priority area, A...no selection/no control, B...selection/no control, C...selection/control, D...
・Changes in the bits of the hidden area. (7317) Agent Patent Attorney Noriyuki Chika (and 1 others)
Figure 3 Figure 4

Claims (1)

[Claims] In an information processing method in which information in memory processed by a computer is read out using the DMA method and transmitted to multiple remote monitoring and control devices, there is a main memory area in which information is stored in the memory of the computer and the information is processed first. Instructions
The information processing method is characterized in that it has a priority area where the priority area is maintained, and preferentially reads and transmits the designated ・l# information according to the instructions of the priority area and transmits it to a remote monitoring and control device.