JPH01170143A - Information processing system - Google Patents

Abstract

PURPOSE:To effectively execute a control according to a control condition by serially transmitting and receiving data between a central control unit and peripheral devices in executing a division into fields to be arbitrarily selected by means of the selection of an identifying code at the central control unit side. CONSTITUTION:In peripheral devices 41-43, data processing parts 51-53 process control data from a central control unit 1, respectively. Bus corresponding parts 61-63 execute checks with the identifying codes of respective fields to be below-mentioned of an up control bus 2, fetch the control data of the coinciding field, give them to the data processing parts, and the identifying codes of their own to response data from the data processing parts, and send them to the unoccupied field of a down control bus 3, after the processings in the data processing parts 51-53 are completed.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to an information processing system such as a communication switching device or an information processing device, and in particular includes a central control device, a plurality of peripheral devices, and a control bus. The present invention relates to an information processing system suitable for a control device to control a plurality of peripheral devices via a control bus.

[Prior Art] Conventionally, in this type of information processing system, a control bus connecting a central controller and a plurality of peripheral devices is connected to an upstream control bus for sending control data from the central controller to peripheral devices, and a central The control device is configured with a downlink control bus for receiving response data from peripheral devices.

These uplink control buses and downlink control busses are
Each peripheral device is divided into individual fields for each peripheral device, and each peripheral device takes in the control data of the data processing section and its own field of the uplink control bus and passes it to the data processing section, and when the processing of the processing section is completed, , and a bus corresponding section that sends the response data to its own field of the downlink control bus.

[Problems to be solved] In the conventional information processing system described above, the control bus is uniformly divided into individual fields for each peripheral device, and each peripheral device can only take in the control data of its own field. The structure was such that it was possible to do so. Therefore, if control data transmission is concentrated on only one peripheral device, even if there is space in the individual fields for other peripheral devices,
It is impossible to use this, and the control data must be divided into its own fields and transmitted, which poses a problem in that it takes time to transmit the control data.

Furthermore, there are limits to the number of peripheral devices and the amount of control data that can be sent each time, making it difficult to add new peripheral devices.

The present invention has been made to solve the above-mentioned problems, and even when the transmission of control data is concentrated on only one peripheral device, it is possible to efficiently transmit control data. It is an object of the present invention to provide an information processing system that can increase the amount of control data sent at one time and also allows easy installation of new peripheral devices.

[Means for Solving Problems] In order to achieve the above object, the present invention includes a central control device and a plurality of peripheral devices controlled by the central control device via a control bus, and the control bus is connected to the central control device. An information processing system comprising an upstream control bus for transmitting control data from a central controller to a peripheral device, and a downstream control bus for a central controller to receive response data from the peripheral device. The downlink control bus is time-divided into a plurality of fields each having an identification code for identifying the peripheral device, and each peripheral device has a data processing section that processes control data from the central control device, and each uplink control bus. The control data of the field that matches the identification code of the field is fetched and passed to the data processing section, and after the processing in the data processing section is completed, the own identification code is added to the response data from the data processing section. and a bus corresponding section that sends data to the empty field of the downlink control bus.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

As shown in the figure, in the information processing system of this embodiment, the connection between the central control device 1 and the peripheral devices 141, 42, and 43 consists of an upstream control bus 2 and a downstream control bus 3, respectively. connected by a control bus.

The peripheral devices 2241, 42, 43 include data processing units 51, 5, respectively, which process control data from the central control device l.
2.53 and the identification code of each field described later on the uplink control bus 2, the control data of the matched field is fetched and passed to the data processing section, and after the processing in the data processing section is completed, the data processing is performed. The bus corresponding unit 61, 62, 6 adds its own identification code, which will be described later, to the response data from the unit and sends it to the empty field of the downlink control bus β.
3 are provided.

FIG. 2 is a diagram showing an example of the time-division field format of the above-mentioned uplink control bus 2 and downlink control bus 3. The uplink control bus 2 has a 3-bit identification code and 8-bit control data. Fields composed of l, 2, 3
．． ..., and the downlink control bus 3 has fields 1, 2, 3, . . . consisting of a 3-bit identification code and 8-bit response data. It is time-divided into...

The identification code is, for example, when rooIJ connects peripheral device 41 to r
oloJ uses the peripheral device 42.

rollJ indicates the peripheral device 43, rooOJ indicates the empty field, and rloOJ.

rloIJ, rllOJ, and rl 11J are unused coats for expansion.

Next, the control operation will be specifically explained with reference to the first circuit and FIG. 2.

For example, when controlling the peripheral device 41, the central control unit! ! l is the identification code r in the field l of the upstream control bus 2.
001J, control data ffrllll.

000" is sent. Then, the lotus correspondence unit 61 of the peripheral device 41 compares the identification code rooIJ with the self-identification code ro01J, and since the results of the comparison match, it takes in the control data rl 1110000 and passes it to the data processing unit 51.

The data processing unit 51 processes the control data and creates response data, for example rllllllli. When the processing in the data processing section 51 is completed, the path correspondence section 61 searches for an empty field in which the identification code of the downlink control bus 3 is rooOJ, sets the identification code of that field to rooIJ, which is the self-identification code, and processes the data. Part 6
The response data "rllllllllll" created in step 1 is inserted into the field and sent back to the central controller l.

Further, when processing the peripheral devices 41, 42, and 43 in parallel, the identification codes in fields 1.2.3 of the uplink control bus 2 are sequentially rooIJ.

"roto" and "roll" and perform the above process.

Furthermore, when centralizing control to one peripheral device 41,
The above processing is performed with the identification codes of fields 1, 2, 3, .

For example, when adding peripheral devices.

Using the unused identification code rloOJ, this identification code is used as the identification code of the newly added peripheral device, and the above processing is performed.

[Effects of the Invention] As explained above, the present invention serially transmits and receives data between the central controller and peripheral devices by dividing the data into fields that can be arbitrarily selected by selecting identification codes on the central controller side. , a small number of centralized control, a large number of parallel control, etc. can be efficiently controlled depending on the control state, and additionally, peripheral devices can be easily added.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
The figure is a time-division field format diagram of the control bus. l: Central control unit 2: Upstream control bus 3: Downstream control bus 41: Peripheral device 42: Peripheral device ffi 43: Peripheral device 51':
Data processing section 52: Data processing section 53: Data processing section 61: Bus correspondence section 62: Path correspondence section 63:
Bus Response Department Representative Patent Attorney Kihei Watanabe

Claims (1)

[Claims] It has a central control unit and a plurality of peripheral devices controlled by the central control unit via a control bus, and the control bus has an upstream control bus for sending control data from the central control unit to the peripheral devices, and a central In an information processing system in which a control device is configured with a downlink control bus for receiving response data from a peripheral device, each of the uplink control bus and the downlink control bus is provided with an identification code for identifying the peripheral device. At the same time, the data processing unit that processes the control data from the central control unit checks the identification code of each field of the uplink control bus and sends the control data of the matched field to each peripheral device. and a bus corresponding unit that takes in the data and passes it to the data processing unit, and after completion of processing in the data processing unit, adds its own identification code to the response data from the data processing unit and sends it to an empty field of the downlink control bus. An information processing system characterized by: