JPH0828710B2 - LAN multi-procedure simultaneous operation processing device - Google Patents

Description

DETAILED DESCRIPTION [Overview] A local area network system (LA) that performs bidirectional communication between a plurality of terminal systems via a communication line.
Regarding N), for the purpose of realizing an efficient LAN that can apply multiple procedures, the communication procedure for multiple terminal systems is provided as multiple procedure units, and when transmitting to the terminal system, LA
N The common processing unit automatically identifies which communication unit is used for communication, and also causes the interrupt processing unit to set the communication enabled state with the terminal system corresponding to the identification result, and when receiving from the terminal system, interrupt processing The LAN common processing unit sets the communication enabled state with the procedure unit corresponding to the terminal system by determining that the unit is in the receivable state, thereby enabling communication between a plurality of terminal systems having different communication procedures. It is configured to realize communication.

TECHNICAL FIELD The present invention relates to a LAN multiple-procedure simultaneous operation processing device for realizing a LAN to which a plurality of procedures can be applied.

2. Description of the Related Art In recent years, a LAN that communicates between terminal systems such as computers, personal computers, and word processors via communication lines has been used for office automation and the like.

By the way, in a LAN that configures a net in such a relatively limited area, there is a tendency that it is fixed to a specific procedure, and in order to configure a more versatile net, there are multiple LANs. It is desired to realize a LAN to which the procedure can be applied.

[Prior Art] Conventionally, in a LAN network station or the like, one LAN control adapter operates only one step. Therefore, when performing communication between terminal systems having different procedures, a plurality of LAN control adapters are provided for each procedure.

[Problems to be Solved by the Invention] However, the provision of a plurality of LAN control adapters corresponding to a plurality of procedures as described above may increase the cost for the net configuration in the future and may cause a problem in operation of software. When only one LAN control adapter is allowed to be mounted, there is a problem that the procedure to use and the communication partner are limited and efficient communication cannot be performed.

The present invention has been made in view of such a problem, and by providing a LAN multi-procedure simultaneous operation processing device capable of coexisting a plurality of procedures with a single LAN control adapter, it is more efficient and The purpose is to construct a versatile LAN.

[Procedure for Solving the Problem] FIG. 1 is a diagram illustrating the principle of the present invention.

First, the present invention is directed to a LAN multi-procedure simultaneous operation processing device for realizing a LAN to which a plurality of procedures are applied.

With respect to such a LAN multi-procedure simultaneous operation processing device, the present invention provides, in one LAN control adapter 2, procedural units 4a, 4b to 4n having a plurality of communication procedures, a main body processing unit and procedural units 4a, 4b to.
It is equipped with a main body interface 6 for connecting 4n, a LAN common unit 8, and an interrupt processing unit 10. When transmitting to the terminal systems 12a, 12b to 12n, the LAN common unit 8 automatically identifies which procedure the communication is based on. At the same time, it causes the interrupt processing unit 10 to set the communication enabled state with the terminal system corresponding to the identification result, and when receiving from the terminal system, determines that the interrupt processing unit 8 is in the receivable state. The common unit 8 is configured to realize communication with a plurality of terminal systems having different communication procedures by setting a communicable state with the procedure corresponding to the terminal system.

[Operation] According to the present invention having such a configuration, one LAN
Even if only the control adapter can be installed, a single L
The AN control adapter allows multiple procedures to coexist and solves problems such as limited communication partners and procedures. Furthermore, even if communication occurs between terminal systems having different procedures at the same time, communication can be performed without error. In addition, the communication partner can perform communication without making the software aware of the procedure.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

First, the configuration of a LAN control adapter to which the present invention is applied will be described with reference to FIG. In FIG. 2, the LAN control adapter 2 includes a communication control interface 14 connected to a communication line, an interrupt processing unit 10, a LAN common processing unit 8, a procedure unit having different procedures 4a and 4b to 4n, and each procedure unit 4a. Main body interfaces 6a and 6b to 6n are provided for connecting to the main body interfaces 6a and 6b to 4n. Then, the main body processing unit 16 of the present system is connected to the main body interfaces 6a, 6b to 6n.

That is, the main body interfaces 6a, 6b to 6n are interfaces for transmitting and receiving data between the LAN control adapter 2 and the main body processing unit 16, and correspond to the respective main body interfaces 6a, 6b to 6n. The procedure parts 4a, 4b to 4n are connected. Further, the LAN common processing unit 8 identifies the procedure corresponding to the transmission request from the main body processing unit 16 or the reception from the communication line, and the interrupt processing unit 10 performs interrupt processing during communication.

Next, the processing function of the LAN control adapter 2 having such a configuration will be described.

First, the main body processing unit 16 stores a predetermined operation program in the interrupt processing unit 10, the LAN common processing unit 8, the procedure units 4a, 4b to 4n, and the main body interfaces 6a, 6b to 6n of the LAN control adapter 2, and then the main body. Initialization is performed by issuing a start instruction from the processing unit 16 to the LAN control adapter 2.

Next, a case of transmitting from the main body processing unit 16 to another terminal system via a communication line will be described with reference to FIG.

As an example, the case of transmitting to the terminal system corresponding to the procedure unit 4a will be described as a representative. First, the transmission request signal and the transmission data are transferred from the main body processing unit 16 to the main body interface 6a. As a result, the main body interface 6a accepts the transmission request, writes the transmission data to the data buffer, acquires the request buffer, and requests the procedure unit 4a for transmission together with the data buffer. Then, the procedure unit 4a determines whether or not the transmission is possible to the corresponding terminal system, and if the transmission is possible, the LAN common processing unit 8a
The data buffer and the information that the procedure of the procedure section 4a operates are transferred to. Based on the information that the procedure of the procedure section 4a operates, the LAN common processing section 8 adds the information of the procedure data to the data contents in the data buffer and passes the data buffer to the interrupt processing section 10. . Interrupt request part 10
Since the data buffer has been passed, activates the communication control interface 14 to perform transmission to the corresponding terminal system.

Further, when transmission is performed by another procedure, the same processing is performed through another main body interface and procedure section.

Next, the processing function when receiving from another terminal system via the communication line will be described based on FIG.
In addition, as an example, the case of receiving from the terminal system corresponding to the procedure unit 4b will be described as a representative.

First, the interrupt control unit 10 operates the communication control interface 14
Write the received data received from the to the data buffer,
By analyzing the received data, which procedure is applied to the data is identified. And if the procedure section 4b
If it is determined that the procedure of is applied, the interrupt control unit 10
Passes the data buffer to the procedure unit 4b. And the procedure section
4b performs a process of determining whether or not the main body processing unit 16 can be notified, and if it is in the notificationable state, the data buffer is passed to the LAN common processing unit 8. The LAN common processing unit 8 acquires a notification buffer for notifying that the main body interface 6b has received the data, and notifies it together with the data buffer. Then, the main body interface 6b performs processing for notifying the main body processing unit 16 by receiving the notification buffer.

Similarly, when receiving based on another procedure, similarly, the received data that has been transferred is analyzed, and the data is received via the corresponding procedure section.

Next, a processing function when an abnormality occurs during communication between the main body processing unit 16 and another terminal system will be described with reference to FIG. As an example, a case where the main body processing unit 16 and the external terminal system communicate with each other based on the procedure of the procedure unit 4n will be described.

When an error occurs due to a cable disconnection between the LAN control adapter 2 and the communication line or a disconnection of the communication line or the communication cable during data transmission from the main body processing unit 16 to the external terminal system, the communication control interface 14 Detects that there is an abnormality in data transmission and notifies the interruption processing unit 10 of the abnormality, whereby the interruption processing unit 10 stops the data transmission. In addition, the LAN common processing unit 8 is notified that an abnormality such as data transmission is not completed. Then, the LAN common processing unit 8 acquires a notification buffer based on the information, notifies the main body interface 6n that an abnormality has occurred, and sets all procedures to the unusable state. After that, the main body interfaces 6a to 6n are connected to the main body processing unit 16
Is notified that an error has occurred in the procedure, and communication is stopped until an instruction is given from the main body processing unit 16.

As described above, according to the LAN control adapter of this embodiment, a plurality of procedures can be applied with one sheet,
An efficient LAN can be realized with a simple structure.

[Effects of the Invention] According to the present invention as described above, a plurality of procedures can be operated with one LAN control adapter. Therefore, a LAN control adapter was conventionally required for each procedure, whereas a LAN The cost for configuration can be significantly reduced. Further, even if the terminal system allows only one LAN control adapter to be mounted according to the standard or the like, it is not necessary to limit the communication partner and the procedure, and the efficiency of the LAN can be improved. In addition, if the procedure with the other party on the communication line is different, if the procedure can be operated by one's own system, data transmission to the other party with different procedure can be processed at the same time. On the other hand, there is an effect that it is not necessary to be aware of the procedure.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of the principle of the present invention, and FIGS. 2 to 4 are explanatory diagrams of an embodiment for explaining a configuration and a processing function of a LAN control adapter of an embodiment. In the figure, 2; LAN control adapters 4a to 4n; procedure units 6a to 6n; main body interface 8; LAN common processing unit 10; interrupt processing unit 12a to 12n; terminal system 14; communication interface 16; main body processing unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 62-36938 (JP, A) JP 1-292456 (JP, A) JP 61-157042 (JP, A) JP 1- 93236 (JP, A)

Claims (1)

[Claims] 1. A LAN multi-procedure simultaneous operation processing device for a LAN for bidirectional communication between a plurality of terminal systems via a communication line, wherein one LAN control adapter (2) has a plurality of terminals for a plurality of terminal systems. Communication procedure is provided as a plurality of procedure sections (4a to 4n), and the main body processing section (16) and the plurality of procedure sections (4a
~ 4n) to connect the main body interface (6), LAN common unit (8) and interrupt processing unit (10), when sending to the terminal system (12a ~ 12n) LA
The N common unit (8) automatically identifies which procedure the communication is in, and causes the interrupt processing unit (10) to set the communication enabled state with the terminal system corresponding to the identification result. ), It is determined that the interrupt processing unit (8) is in the receivable state, and the LAN common unit (8) sets the communicable state with the procedure corresponding to the terminal system. A LAN multi-procedure simultaneous operation processing device characterized by performing communication with a plurality of terminal systems having different communication procedures.