JPH04274635A - Multi-communication system - Google Patents

Abstract

PURPOSE:To improve an efficiency by providing a multi-port memory able to write/read a signal independently of a host communication processing unit based on a write/read command from an information processing section and plural communication control sections. CONSTITUTION:When a host communication processing unit 10 sends same information to each subordinate device 50i, an information processing section 30 provided in the processing unit 10 writes transmission information to a multi- port memory 20. The information written in the memory 20 is read by a communication control section 40i provided corresponding to the device 50i without disturbing other read processing or write processing independently and transferred to the device 50i via each exclusive communication line. Thus, the efficiency is improved with simple.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a multi-communication system,
In particular, between an upper communication processing device that has an information processing unit that processes information such as creating transmission information, and a plurality of communication control units that control transmission and reception to and from each lower communication processing device, and the upper communication processing device. The present invention relates to a multi-communication system for a communication network having a plurality of lower-level communication processing devices each connected through a dedicated communication path.

0002

2. Description of the Related Art Conventionally, there has been an upper communication processing device (master communication processing device) shown in FIG. This example is an enclosed communication (multi-destination) that transmits the same information.
delivery: 1-to-n communication),
The reception capability of the lower-level communication processing device (slave communication processing device) that constitutes the communication network and the performance of the communication path affect the overall communication capability. In particular, the device with the lowest capability among the other parties influences the communication throughput of the entire system (the amount of work performed by the computer system within a given time). Therefore, in order to prevent the overall communication ability of the system from deteriorating as much as possible, the parts that communicate with each party are made independent and each has its own data buffer to absorb the communication ability, as shown in the figure. be. As shown in the figure, in this example, one upper communication processing device 60 and a plurality of lower communication processing devices 50i are connected to each other through dedicated communication paths; i=1, 2 and 3, and the upper communication processing device 60 includes an information processing unit 63 that performs processing such as creating transmission information to be transmitted to the lower communication processing device, and an information processing unit 63 corresponding to each of the lower communication processing devices. A plurality of communication control units 64i are provided to control transmission and reception with each communication processing device; i=1, 2, and 3, and write or Buffers 62i; i=1, 2, and 3 are provided in which information can be written or read according to a reading instruction. Therefore, the communication channel network has a star-shaped LAN structure with the upper communication processing device 60 at the center.

[0003] When sending transmission information to the upper communication processing device 60 and, for example, the lower communication processing device 501, the information processing unit 63 sends the transmission information to be sent to a buffer 621 connected to the lower communication processing device 501. The communication control unit 6 connected to the buffer 621
41, the information is read from the buffer 621 and transmitted to the lower-level communication processing device 501 of the transmission destination using a dedicated communication path. In addition, when performing enclosed communication, the information processing unit 63 writes the transmission information to be transmitted to the all buffers 62i; i=1, 2, 3, and each communication control unit 64i reads out the information, All lower-level communication processing devices 50i; i=1,
It will be sent on 2nd and 3rd. Therefore, when performing enclosed communication, even if the lower communication processing device 501 has low communication ability, the other devices 502, 5
Since the information in the buffers 622 and 623 can be transferred to the device 501, the throughput of the entire system is not directly controlled by the device 501.

0004

By the way, as explained above, in the conventional system, since a buffer is provided corresponding to each lower-layer communication processing device, the throughput of the entire system is directly It is not controlled by. However, in this method, it is necessary to write the same information into each of multiple buffers, especially when performing enclosed communication, and as shown in FIG. 5, compared to the case of one-to-one communication, There is a problem in that writing processing is performed redundantly, which may reduce performance.

SUMMARY OF THE INVENTION Therefore, the present invention has been made with the object of providing a multi-communication system that allows efficient communication with a simple configuration when a communication processing device communicates with a plurality of devices. .

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned technical problems, the present invention, as shown in FIG. A plurality of communication control units 40i that control transmission and reception to and from the device; a plurality of communication control units 40i connected with the upper communication processing device 10 having i=1, 2, . . . Lower communication processing device 50i ;i=
1, 2, ..., n, an information processing unit 30 and a plurality of communication control units 40i
Multi-port memory 2 in which information can be written or read independently according to write or read instructions from
0 is provided in the upper communication processing device 10.

On the other hand, the second invention, as shown in FIG. 2, includes an information processing section 300 that processes information such as creating transmission information;
and a plurality of communication control units 400i ; i = 1, 2, ..., n, each of which controls transmission and reception to and from each communication processing device, and a plurality of communication processing devices 100i ; i connected to each other through a dedicated communication path. In a multi-communication system of a communication network having =1, 2, . Each communication processing device 100
i.

[0008]

[Operation] Next, the multi-communication system according to the first invention will be explained. As shown in FIG. 1, the upper communication processing device 1
When transmitting (enclosing) the same information to each lower-level device 50i using 0, the transmission information is written into the multiport memory 20 from the information processing section 30 provided in the processing device 10. The information written in the memory 20 is read out independently by the communication control unit 40i provided corresponding to each lower communication processing device 50i without interfering with other read or write processing, and It will be transferred to the lower-level communication processing device 50i via the communication path. Furthermore, when transmitting the same information to each group of a plurality of lower-layer communication processing devices instead of transmitting the same information to all lower-layer communication processing devices, the number of writes to the multiport memory 20 can be reduced. It is sufficient to write as many times as there are groups, and it is not necessary to write as many times as the number of lower-layer communication processing devices. On the other hand, in the second invention, unlike the first invention, each communication processing device 10 is
0i corresponds to all upper communication processing devices, so to speak, and each communication processing device 100i is provided with a multiport memory. Note that the procedure for transmitting data from each communication processing device is the same as the procedure for transmitting data from the higher-level communication processing device to each lower-level communication processing device according to the first invention.

[0009]

[Example] Next, an example of the present invention will be described. FIG. 3 shows upper communication processing according to this embodiment. As shown in the figure, in this embodiment, an upper communication processing device (master communication processing device) 1 and a plurality of lower communication processing devices (slave communication processing devices) are connected to each other by dedicated communication paths. Communication processing device) 5i; i=1, 2, 3. Further, the upper communication processing device 1 includes an information processing unit 3 that processes information such as creating transmission information, and a plurality of communication control units 4i that controls transmission and reception to and from each lower communication processing device;
1, 2, 3, and the information processing section 3 or communication control section 4i
It has a multiport RAM 2 as a multiport memory 20 to which information can be written and read independently in response to a write or read instruction from the memory.

As shown in the figure, the information processing section 3 includes:
It has a CPU 31 that processes information according to a program, a ROM 33 that stores a program that processes the CPU 31, and a RAM 32 that stores information processed by the CPU 31 and control information. Further, as shown in the figure, the communication control unit 4i includes a CPU 41i that instructs access to the multiport RAM 2 and instructs communication control based on the program and control information, and a ROM 44i that stores the program. , a RAM 43i for storing transmitted or received data, and a transmitting/receiving section 42i for controlling transmission and reception.

The multi-port RAM 2 has a terminal PORT1 connected to the information processing section 3, and a communication control section 4i.
; Terminals PORT2 connected to i=1, 2, and 3, respectively;
It has a terminal PORT3 and a terminal PORT4, and the RAM 2 stores control information necessary for communication between the upper communication processing device 1 and each lower communication processing device 5i, such as start, end, abnormal processing, etc. Register area 6i for storing each information; i=1, 2, 3, 4, 5, 6
is provided corresponding to each lower-level communication processing device. Furthermore, a similar register area 16i used when communicating between each lower communication processing device; i=12,21
, 13, 31, 23, and 32 are provided. In addition, the RAM 2 includes a device information buffer area 7i provided corresponding to each lower communication processing device for storing information to be transmitted from the upper communication processing device to each lower communication processing device;
A common buffer area 70 is provided for use in storing the same information when transmitting the same information to i=1, 2, 3, and all lower-layer communication processing devices. Note that, unlike the upper communication processing device 1, the lower communication processing device 5i does not require a multiport RAM because it always communicates with the upper communication processing device, and a normal RAM is used for communication control and information processing. It is established together with the Department. FIG. 4 illustrates each area provided inside the RAM 2. As shown in FIG. However, the register areas 1612 to 1632 are not required when communication is not performed between lower-level communication processing devices. Furthermore, when enclosing communication is always performed, the device information buffer area 7i; i≠0 is not necessary, and only the common buffer area 70 is sufficient.

Next, the operation of the multi-communication system of the communication network according to this embodiment will be explained. When the upper communication processing device 1 transmits the transmission information D to all the lower communication processing devices 5i, the CPU 31 of the information processing section 3 reads the transmission information D stored in the RAM 32, and R
According to the program stored in the OM 33, the relevant information is written in the common buffer area 70 of the multi-port RAM 2, and control information necessary for performing communication corresponding to each lower-layer communication processing device, the multi-port RAM 2 register area 6i; i=1, 2, 3
Control information that declares the start of communication will be written within. Then, each lower communication processing device 5i; i=1, 2, 3
The CPU 4 of the communication control unit 4i provided corresponding to
1i is the register area 6i of the RAM 2; i=
1, 2, and 3, and if the communication is in the start state, the transmission information D is sequentially read from the common buffer area 70, and the read transmission information D is sequentially stored in the RAM 43.
i or directly from the transmission/reception control unit 42i through a dedicated communication path to the corresponding lower-level communication processing device 5i.
The transmission process will be performed for that. When the transmission of all the information D is finished, the CPU 3 of the information processing device 1
Multiport RA arranged to notify termination to 1
Write communication end to register area 6i; i=5, 6, 7 in M2. The CPU 31 register area 6i;i
=4,5,6 are checked and all lower-layer communication processing devices 5
If it is determined that the transmission to i has been completed, the next information will be transferred. In this way, multiport RA
It is possible to improve the overall system throughput in proportion to the capacity of M. In addition, the CPU 31 writes information that it wants to communicate with the lower-level communication processing device 51 only in the register area 61 in the multi-port RAM where the start, end, abnormal processing, etc. have been decided, and sends the transmission information to the register area 61 in the multi-port RAM 2. 71, the CPU 411 in the communication control unit 41 determines its status, and only the corresponding CPU 411 can receive the information and perform communication. Furthermore, the information received from the lower-layer communication processing device side is
By using the register area 65 of AM2, it becomes possible to transfer the data to the CPU 31. In the above explanation, the case where the ratio of the number of upper communication processing devices to lower communication processing devices is 1:3 has been explained, but it is not limited to this case. For example, if the ratio is 1:2, 3-port RAM This embodiment can be executed by using the following. As explained above, when performing enclosed communication from a higher-level communication processing device to each lower-level communication processing device,
Transmission can be performed by writing the transmission information once by the information processing unit 3, and there is no need to write and transmit the transmission information for each lower-level communication processing device, so that the effort of writing can be saved. become.

[0013]

As explained above, the present invention reduces the size of the device and the number of parts by providing a multi-port memory in the communication processing device. Since it is not necessary to write a plurality of pieces of transmission information in parallel for each lower-level communication processing device, the effort of writing can be saved, and an efficient multi-communication system can be provided with a simple configuration.

[Brief explanation of the drawing]

[Figure 1] Block diagram of the principle of the first invention

[Figure 2] Block diagram of the principle of the second invention

FIG. 3 is a block diagram showing a communication processing device according to an embodiment.

[
FIG. 4 is a diagram showing the contents of the multiport RAM according to the embodiment

[Fig. 5] Block diagram according to conventional example

[Explanation of symbols]

1,100i, 10 Upper communication processing device (master communication processing device) 20,200 (2) Multiport memory (multiport RAM) 4,40,400 Communication control unit 5,50i Lower communication processing device (slave communication processing device) )

Claims (2)

[Claims] 1. An information processing unit (30) that processes information such as creating transmission information, and a plurality of communication control units (40i; i=1
, 2, ..., n) and a plurality of lower communication processing devices (50i; i=1, 2,
..., n) in a communication network having an information processing unit (30) and a plurality of communication control units (40i
) A multi-port memory (20) in which information can be written or read independently in accordance with a writing or reading instruction from an upper communication processing device (10) is provided. 2. An information processing unit (300) that processes information such as creating transmission information, and a plurality of communication control units (400i; i=1) that controls transmission and reception for each communication processing device.
, 2, ..., n) and are interconnected through dedicated communication paths (100i;
In a multi-communication system for a communication network having i=1, 2, ...), an information processing section (300) and a plurality of communication control sections (
400i) according to a write or read instruction,
A multi-communication system characterized in that each communication processing device (100i) is provided with a multi-port memory (200) in which information can be written or read independently.