JPS62284542A - Annular common bus communication system - Google Patents

Abstract

PURPOSE:To perform simultaneous processing for multiple address communication and initial program loading in units of function processor groups classified by functions by equipping each processor with an adding means for a group address and a communication kind number, a group address detecting means, etc. CONSTITUTION:An RSC 80 which receives the indication of the transmission of a multiple address message to an EQB group sets the group address of the EQB in a GAA 61, sets the communication kind number in an NOA 71 and actuates an SND 50, and constitutes and sends a packet to a annular common bus 10. The EQB 30 on a reception side receives the packet in an REC 40 and sends out the address part and communication kind number part of the packet to a GAD 60 and an NID 70. A GAD 60 actuates an NID 70 when the group address of its processor coincides with the group address of the packet to inform an RSC 80 that the message is a multiple address message, thereby sending the indication of the transmission of the received data to an RSC 80 and to and SND 50 to an REC 40.

Description

[Detailed description of the invention] Detailed description of the invention Industrial application field] The present invention relates to a circular common bus communication system.

[Conventional technology]

Conventionally, this type of circular common bus communication system has been used for transmission [11
One processing device determines one receiving device, adds the determined device number to the transmission data and sends f3, or communicates to all the processing devices by repeat communication.

[Problems to be Solved by the Invention] In the conventional circular common bus communication system described above, the receiving side processing device is always determined to be one by the transmitting side processing device, or a group of unrelated function processing devices is used. Since the method was to perform broadcast communication including the same function processing devices, broadcast communication and initial program loading to a group of processing devices with the same function were carried out with the receiving processing devices selected one by one by the sending processing device. This method requires a complicated processing procedure in which data is communicated sequentially between the two processing devices, and data transfer for the number of processing devices on the receiving side must be performed repeatedly in order, resulting in a long processing time.

[Means for solving problems]

The circular common bus communication system of the present invention comprises a circular common bus and a plurality of processing devices connected to the circular common bus, and these processing devices are divided into a plurality of types of processing device groups according to functions. In the above, each of the processing devices has the same group address and communication type number set for the same functional group, and additional means for adding the group address and communication type number of the received Ipl to the transmitted data, and the group address of the received data is set to the same group address and communication type number. a group address detecting means for detecting whether or not the communication type number matches the group address of the own processing device; a data importing means for identifying the communication type number, determining whether to import the received data into the own processing device, and importing the received data; and data sending means for sending the received data back to the circular common bus.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the circular common bus communication system of the present invention.

This embodiment consists of an annular common bus 10 and a plurality of processing devices connected thereto.
2 and B functional group processing unit (hereinafter referred to as EQB) 30, 31.32
It can be divided into

FIG. 2 is a circuit block diagram showing an example of the processing device in FIG.
00 is a data reception circuit (hereinafter referred to as REC) 40, a data transmission circuit (hereinafter referred to as 5ND) 50, a group address detection circuit (hereinafter referred to as GAD) 60, and a group address addition circuit (hereinafter referred to as GAA).
61 and the communication type number and transmit/receive control circuit (hereinafter R
8C) Communication type number identification circuit to notify 80 (hereinafter N
ID) 70 and a communication type number addition circuit (hereinafter NOA>71) for transmitting the communication type number. Note that EQA21.22.EQB30°31.32 are also EQA
It has the same configuration as No. 20.

Next, regarding the operation of this embodiment, multiple EQAs are
An example of a case where broadcast communication is performed to QB will be explained.

For example, in EQA20 on the transmitting side, from PRC90 to E
R3C8 receives instruction to send broadcast message to QB group
0 sets the EQB group address to G A' A61,
Enter the communication type number N0A to indicate that it is a broadcast message.
Set it to 71 and start 5ND50. The 5ND 50 that has received the transmission activation takes out the first group address from the GAA 61 and the communication type number from the N0A 71, takes out the message from the RS C 80, composes a packet, and sends it to the circular common bus 10. On the other hand, EQB on the receiving side
At E Q B 30, which is one of the above, the packet is taken into the REC 40 from the circular common bus 10. The REC 40 sends the address part and communication type number part of the packet to the GAD 60 and NII) 70, respectively. G
The AD 60 determines whether the group address of its own processing device and the group address of the received packet match or not, and does nothing if they do not match. In other words, in this case, the received packet/soto is delayed for a certain period of time by RE C40 and then 5ND50.
The signal is again transmitted to the circular common bus 10 via . Also,
As a result of the above judgment, if the addresses match, GAD60
starts NID70. NID70 received activation
The message notifies the R5C80 that it is a broadcast message based on the contents of the communication type number, and also instructs the REC40 to send the received data to the R3C80, and does not issue an instruction to send the received data to the 5ND50. NID70
The REC40 receives instructions from the R3C80 and transfers the received data to the R3C80.
and sends it to 5ND50.

In this way, the broadcast message is taken into its own processing device and simultaneously sent out again to the circular common bus 10, and then taken over to the EQB 31, which is one of the B function group processes.

EQBs 31 and 32 also perform the same processing as EQB 30.

Note that the communication of the initial program load message is also performed by the same operation as the communication of the above-mentioned broadcast message.

〔Effect of the invention〕

As described above, the present invention provides a means for adding a group address and a communication type number, and a means for detecting a first group address.

By equipping each processing device with a data importing means and a data sending means, it is possible to perform simultaneous processing of broadcast communication and initial program loading in units of functional processing device groups divided by function type, which increases the usage rate of the circular common bus. This has the effect of reducing the load time of the initial program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the circular common bus communication system of the present invention, and FIG. 2 is a circuit block diagram showing an example of the processing device shown in FIG.

Claims (1)

[Claims] In a circular common bus communication system consisting of a circular common bus and a plurality of processing devices connected to the circular common bus, and in which these processing devices are divided into multiple types of processing device groups according to function, each of the processing devices is in the same functional group. additional means for adding the group address and communication type number of the receiving side to the transmitted data, and whether the group address of the received data matches the group address of the own processing device. a group address detection means for detecting whether or not the communication type number is received; a data import means for identifying the communication type number and determining whether or not to import the received data into its own processing device; and a data importing means for importing the received data into the circular common bus 1. A circular common bus communication system comprising: data transmission means for transmitting data.