JP2000138726A - Data processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a program type display device which is positioned and formed between a host computer and a PLC and performs display corresponding to data read from the PLC to perform data transfer in real time between the PLC and the host computer having different communication protocols, without being aware of the difference in the communication protocols. SOLUTION: Data transfer is performed in a general-purpose communication protocol between a common interface means 12 and a general-purpose data processing means 11 such as a host computer, data exchange is performed in a communication protocol which is proper to their own types of machines between a dedicated interface means 13 and a data processing means 10 having a specified function such as a PLC, and a means 14 which converts protocols is provided between both the interface means 12 and 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing apparatus, and more particularly, to a data processing means having a communication protocol specific to a model such as a programmable logic controller (hereinafter abbreviated as "PLC"), and a personal computer. The present invention relates to a device which is provided between data processing means having a common communication protocol such as an application device and which can exchange data with each other.

[0002]

2. Description of the Related Art Conventionally, even when a plurality of PLCs are used in conjunction with each other, the PLC is positioned as a center of control, and a plurality of PLCs and a host computer are transmitted to a predetermined number of devices. Directly between the PLCs, or indirectly through a dedicated adapter, to connect between PLCs or
The transfer of various data between the PC and the host computer has been performed using the communication function of the PLC.

[0003]

SUMMARY OF THE INVENTION However, PLC
Has developed from a sequencer using a relay, and specializes in I / O control such as on / off control of switches and data acquisition from sensors. There is a lot of burden to make it the center.

[0004] Furthermore, as for the PLC, the communication protocol used for data communication differs depending on the product, depending on the manufacturer or even the same company. As a result, there are countless communication protocols to be supported by the host computer, and connection is attempted. The usability was extremely poor, for example, a new communication protocol dedicated to the host computer corresponding to the PLC had to be prepared.

The present inventor has studied the above problem, and as a result, has obtained the following knowledge. That is, since the programmable display device that has been dedicated to display has been developed as a personal computer application device, data communication with a general-purpose personal computer device can be easily performed using a general-purpose protocol. Further, since data communication with a PLC is indispensable for a display device, a dedicated communication protocol corresponding to a PLC to be connected is generally already developed.

Therefore, when this display device is positioned at the center of communication and is connected between the PLCs and the host computer via the display device, the display device functions as a protocol conversion means at the time of data communication. .

The present invention has been made based on such knowledge, and has been achieved by using a data processing device such as a programmable display device, which has conventionally been used only for displaying a control state, as the center of communication. , The PLC can be devoted to the I / O control which is the original function, the load on the PLC can be reduced, and the communication protocol of the PLC which is innumerably present on various data processing means including the host computer connected at the same time. It is therefore an object of the present invention to provide a data processing device which does not need to be considered and can greatly reduce the number of steps of software.

[0008]

As shown in FIG. 1, a data processing device 22 according to the present invention comprises a first data processing means 10 for transferring data using a communication protocol specific to the model, such as a PLC, A predetermined data processing operation is performed between the second data processing unit 11 and a second data processing unit 11 that exchanges data according to a common communication protocol like a general-purpose personal computer device.

Here, a common interface means 12 connected to the second data processing means 11 to exchange data with a common communication protocol, and one or more first interface means
A dedicated interface means 13 connected to the data processing means 10 for transferring data using a dedicated communication protocol used by the first data processing means 10 to perform data communication; a common interface means 12 and a dedicated interface means 13 And a protocol conversion means 14 for converting a communication protocol.

The above-mentioned common interface means 12
Between the first data processing means 10 and the second data processing means 11, data is transferred in a common data format in which contents to be processed are represented by an intermediate code independent of the model. A conversion table 15 between a model-specific command to be used and an intermediate code;
Using a predetermined information such as format information 16 for specifying the structure of the data to be transferred, a dedicated data format that can be transferred to and from the first data processing means 10 to perform data communication, and a second data processing It is characterized in that data can be mutually converted between a common data format passed to and from the means 11.

The above-mentioned common interface means 12
A display means 17 for enabling a predetermined display operation and a memory means 18 for enabling a data storage operation are provided between the display means 1 and the dedicated interface means 13.
7 and the transfer of data in the memory means 18 are as follows:
It is performed in a common data format.

The above-mentioned common interface means 12
In the data passed through the, the code specifying the screen processing on the display means 17, the code specifying the memory access to the memory means 18, and the data communication processing between the first data processing means 10 are specified. And a data processing operation corresponding to each code can be performed.

[0013]

As described above, according to the present invention, data is exchanged between the common interface means 12 and the general-purpose data processing means 11 such as a personal computer by using a general-purpose communication protocol. Mean 13
And data processing means 1 having specific functions such as PLC
0, data is transmitted and received using a communication protocol specific to the model.
Since means 14 for converting a protocol between 13 is provided,
Data can be transferred in real time between a plurality of data processing means having different communication protocols without being aware of the difference in the communication protocol.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, the present invention is provided in a target system 20 such as a belt conveyor type automatic assembling machine using a PLC 19 provided as a first data processing means. A description will be given based on an example of using a programmable display device 22 as a control panel for the PLC while controlling a device of a controlled system in sequence, but the present invention is not limited to this. Even when various personal computer application devices are used as the second data processing means, the present invention can be implemented in substantially the same manner.

The PLC 19 is realized as a whole PLC by unitizing a circuit for each required function such as a CPU unit and a memory unit, and adding each unit as needed via a bus line. It has a configuration substantially the same as that of the related art, which allows the number of functions to be increased or decreased.

In this embodiment, a CPU unit 23 for controlling the entire PLC 19, an input unit 25 for enabling direct capture of a detection signal sent from the target system 20, and An output unit 2 that can output a predetermined control signal
6, a memory unit 24 for storing various data, and a computer link unit 27 for enabling predetermined data communication with the programmable display device 22 as basic units. The change state is monitored, and when a data change such as a new data input is recognized, necessary arithmetic processing is performed, and then the corresponding address on the memory unit 24 is accessed to read / write the contents. Send data to

The storage location of status data which is directly input / output to / from the target system 20 or used for control thereof is controlled by a passive level such as a level meter or limit switch provided on the target system 20 to be controlled or displayed. Parts, active parts such as relays and motors, or data setting parts such as counters and printers are secured in the memory unit 24, and input / output data is a word device for word data such as numerical values. However, for bit data such as on / off information, a bit device
The storage location is set in the memory unit 24 so that the storage location can be specified by designating a device name or address such as “X001” specific to the model.

Therefore, only by specifying and accessing an arbitrary word device or bit device in the memory unit 24 from inside or outside the PLC 19,
The corresponding position of the target system 20 can be controlled or information on the operation state can be individually obtained.

The PLC 19 receives a command sent from another data processing device, and writes or reads data corresponding to the command to or from the memory unit 24, or returns the sent command or data as it is. In general, it has a general data transmission function. However, it is needless to say that the present invention can be implemented in substantially the same manner even when it has an active data transmission function.

The programmable display device 22 includes a PLC 19
In addition, they are integrated into an operation console or the like of the target system 20 or are independently provided and used as a control panel for the target system 20.

For example, as shown in FIG. 3, a screen 29 using a liquid crystal display device as a display 28 is arranged on the front side of a substantially rectangular housing, and a touch panel 30 is arranged in close contact with the screen 29. On the other hand, the display control circuit 31 shown in FIG. 2 is housed inside the housing.

With this configuration, the PLC 1 is displayed on the screen 29.
9, a display corresponding to the control state of the target system 20 is performed, and at the same time, data input by a fingertip via the touch panel 30 and the touch panel controller 32 and indirect control of the target system 20 via the PLC 19 are enabled.

It should be noted that, as a data input means of the program type display device 22, instead of or in addition to the touch panel 30, various manual data input means such as a pointing device such as a mouse or a keyboard can be used. .

The basic configuration of the display control circuit 31 is substantially the same as that of a general-purpose personal computer, and various memories including a CPU 34, a ROM 35 and a RAM 36, or a graphic controller 37 are connected via a bus line 33. While the CPU 34 performs a predetermined arithmetic operation according to the system program stored in the ROM 35,
Various calculation results appropriately stored in the AM 36 are developed as bit images by the graphic controller 37 using various display data, and a display corresponding to the contents is performed on the screen 29 of the display 28.

Furthermore, the communication controller 38 which enables the exchange of various data with a dedicated protocol specialized for the circuit configuration of the PLC 19 and the computer link unit 27 on the PLC 19 side are connected to the dedicated communication line 3 in the serial state.
9 are connected.

The communication controller 38 is provided with a plurality of (three in this embodiment) communication ports 40, one PLC 19 can be connected to each communication port 40, and according to a communication procedure described later. , Data communication with each other.

Here, in the programmable display device 22, a static figure 41 such as a name plate shown in FIG. 3 which does not require a change in display contents, or a part figure 42 such as a switch shape for changing shape, blinking or changing color. Is a unit screen on which one or more are provided on the base screen. Furthermore, a plurality of unit screens are provided in the single programmable display device 22 for data processing, and by specifying a different file number F for each unit screen, it is necessary only to switch the unit screen. A display screen showing the operation contents is obtained.

Further, when one unit screen is selected, a processing instruction word W related to the selected unit screen as illustrated in FIG. 4A is stored in the event data memory 43 in advance. In addition, the processing instruction word W is read out intermittently every minute time, and the operation of the content specified by the event name N of each processing instruction word W is performed from the PLC 19 side to the display device 22.
The display operation is performed on the display screen in which the part graphic 42 and the display data are changed in response to the change of the content of the bit device or the word device on the PLC 19 side by sequentially executing while referring to the data taken out to the side. .

That is, the basic structure of the processing instruction word W is substantially the same, and the file number F of the base screen on which the display control operation is to be executed and the event name for specifying the operation content to be executed on the base screen N and one set of reference information r composed of one or a plurality of data referred to for each execution event.

For example, the processing instruction word WT shown in FIG.
The bit device that is set at a predetermined address position in the state data memory 44 can be inverted in conjunction with a pressing instruction operation on the touch panel 30. That is, the file number F1 of the unit screen, the touch panel 3
An event name N starting with "T", for example, specifying the operation 0
1. An input coordinate range X / Y in which an input operation from the touch panel 30 is valid, and an address A at which data is to be rewritten in conjunction with a pressing operation on the touch panel 30.

Further, the processing instruction word WL shown in FIG.
In conjunction with the operation of the touch panel 30 described above, a predetermined figure can be displayed at a corresponding position on the display screen. That is, the file number F1 of the base screen, the event name N2 starting with, for example, "L" for specifying the display of the part graphic 42, the display coordinate range XY of the part graphic 42, the file number FL for specifying the part graphic 42 to be called, the part An address A is referred to when the graphic 42 is displayed.

Then, as shown in FIG. 3A, the coordinate range XY
Are set in the event data memory 43 in advance. Also, the state data memory 4 provided on the PLC 19 side
If the bit device at address A of No. 4 is “0”, it is made to correspond to the off state of the switch in advance, and the PLC 19 performs the off operation on the actual switch contact to be controlled on the target system 20 side. At the same time, the part graphic 42 corresponding to the switch off state
Is read from the graphic memory 45, and is developed and displayed in the designated coordinate range XY on the corresponding base screen.

When the display location of the component figure 42 having the switch shape on the touch panel 30 is pressed, a processing instruction word WT for the touch panel 30 is searched, and a range including the corresponding coordinates from the instruction coordinates made via the touch panel 30 is searched. Is determined as to whether or not there is a processing instruction word WT having the coordinate information as the coordinate information.

For example, when one point in the coordinate range XY is pressed, the processing instruction word WT1 constructed as described above is pressed.
Therefore, as shown in FIG. 3B, by writing data to the corresponding address A in the PLC 19 and inverting the data value from “0” to “1”, the PLC 19
Control to turn on the corresponding switch contact. At the same time, the processing instruction word WL1 reads the data at the reference address A and determines that the data has changed to “1”. Then, the graphic data FL2 corresponding to the ON state of the switch
Is read from the graphic memory 45 and is displayed in the corresponding coordinate range XY, so that the switch-shaped component graphic 42 displayed on the base screen is also changed from the off state to the on state.

In this embodiment, one or more programmable display devices 22 and a host computer 46 are further provided.
Between, a general-purpose communication adapter 47 such as Ethernet
And a LAN connection via a common communication line 48 composed of a communication cable.

Therefore, the programmable display device 22 and the host computer 46 connected via the common communication line 48 exchange various data with each other using a common communication protocol as described later in detail. Make it possible.

Further, even when the data communication protocol is dedicated to each PLC and different from each other for each PLC 19, the state data MD corresponding to the control state of the PLC 19, including the state data MD between the plural types of PLCs 19 and between the PLC 19 and the host computer 46 is obtained. Of the various types of data described above can be transferred via the program display device 22.

That is, as shown in FIG. 5, predetermined data processing is performed in the host computer 46, and the processing result is displayed on a screen, while data to be transmitted is transmitted through a common communication line 48 using a common protocol. Sent out.

On the other hand, the PLC 19 performs input / output operations of various signals with the controlled system device 21 in the target system 20 in accordance with a preset program.
The data having the contents corresponding to the control state is specified and stored in the state data memory 44 set in the memory unit 24 as shown in FIG.

The updated state data MD is stored in the display 2
In response to a data read request from the second side, the data is sent from the PLC 19 to the display device 22 via the PLC dedicated communication line 39 using a dedicated protocol specific to the model. In response to a data write request from the display device 22, a dedicated communication line 3 using a dedicated protocol.
When data for changing the state data MD in the PLC 19 is input through the controller 9, a control operation for the controlled system device 21 corresponding to the data change is performed.

The present invention has the above-described configuration, and further includes a TCP / IP between the programmable display device 22 and all the data processing devices including the host computer 46 connected via a common communication line 48. By using a general-purpose communication protocol such as that described above, data is exchanged using a common data transfer format 49 illustrated in FIG.

On the other hand, the display device 22 and the PLC 19
7 is defined by a model-specific communication protocol.
Information is transferred using data 50 created based on a dedicated data transfer format as exemplified in (a).

Here, the common data transfer format 49
As shown in FIG. 6A, a process ID to be processed in the programmable display device 22, an address for specifying the source of data, an address for specifying the destination of data,
An example composed of the first data that defines in detail the data processing content specified by the above processing ID is shown. This is an example, and if it can be used in common, its format is Of course, it can be set arbitrarily.

In this embodiment, the data processing contents requested from the host computer 46 to the programmable display device 22 include data access to the internal memory 52, screen processing operation in the display device 22,
Data communication with the LC 19 is defined. Therefore, specific processing contents and I that uniquely specify the contents are described.
A correspondence table with the D code is provided, a specific ID is specified according to the correspondence table, and a device to which data is to be transferred is specified by the source and destination addresses.

Next, as shown in FIG. 6B, the format of the first data specifically specifies the processing content specified by the processing ID, and is specified by the ID. Process content ID required when executing the content
, A command ID expressed by a generalized intermediate code of the command, a device address indicating a specific access destination, and second data.

For example, if the content to be processed is data transfer between the PLC 19, the processing content ID indicates whether data communication is performed between the display device 22 and the PLC 19 in a one-to-n relationship. An ID code that specifies whether data communication is performed in the relationship of 1, and reference data related to processing contents such as a station number specified in advance in the connected PLC 19 are set.

Next, the command IDs are P
In the communication protocol for LC, a command for specifying the processing content common to each protocol is converted into an intermediate code with the same code number as illustrated in FIG. 7 (c). A conversion table 15 for comparison is provided in a database.

The device address is for specifying a specific device set on the status data memory 44 of the PLC 19, and a specific address or device name from which data is to be read or written is specified. As the second data, data to be actually written when writing data, and information for specifying data to be read or written, such as a read size when reading data, are written.

For each data sent using the common protocol and the common data format described above, each PL
The communication protocol defined by the C maker is generally forced to use not only the command system but also the data contents included in the data transfer format and the transfer information or the order in which they are arranged in a different order. is there.

Therefore, the data transfer format defined by each dedicated communication protocol is, for example, as shown in FIG.
In the case of such a format, a format in a skeleton state in which a data portion to be actually transferred is undetermined is extracted and stored as format information 16 as shown in FIG.

Further, a conversion table 15 illustrated in FIG. 7C is formed in which the intermediate code used in the above-mentioned common communication protocol and a command unique to each model are paired, and the above-mentioned data transfer format information 16 and The display device 22 is set as protocol information 51 for each communication protocol.
By providing it on the internal memory 52, the data communication by the protocol depending on the model of the connected PLC can be performed only by switching the protocol information 51 depending on the model and applying specific data to it. .

Therefore, at the time of initial setting of the display device 22 or when the connected PLC 19 is changed, the communication protocol information 51 corresponding to the PLC 19 which may be connected to itself is stored in the host computer 46, for example. It is selected from a protocol database and downloaded to the memory via a common communication line 48 using a common communication protocol.

Instead of or in addition to downloading the dedicated communication protocol information 51 from the host computer 46 as described above, a means for reading / writing data from / to the memory card is provided to download the communication protocol information 51 from the memory card. It can be downloaded from the loader at an appropriate time, such as when the file is created.
5, a plurality of types of communication protocols are fixed in advance,
The required communication protocol can also be selected.

In the above configuration, when the display device 22 is started in step ST1 in the flow chart shown in FIG. 8, after a predetermined initialization operation is performed in step ST2, the process enters a data receiving process starting from step ST3. .

First, in step ST3, it is determined whether there is no data input through the common communication line 48. If there is no data input, the process proceeds to step ST4 to check whether there is any data input through the dedicated communication line 39. When it is determined that there is no data input from the dedicated communication line 39, the process returns to step ST3 to wait for a new data input.

If the data input through the common communication line 48 is determined in step ST3, the process proceeds to step ST5 to check whether the data is for itself.
If it is determined that the data is not self-applied data, the process returns to step ST3 and waits for the next data input.

However, when the own data is taken out at step ST5, the format of this data is defined by the common data transfer format 49 exemplified in FIG. 6, so that the processing at the beginning of the data received at step ST6 is performed. The ID is determined, and a data processing operation according to the content is started.

For example, if the processing ID is related to screen processing, the process proceeds to step ST7, where an image transfer task processing operation is performed. The data processing operation of the content specified in is performed. If the processing ID relates to internal processing, necessary data processing such as writing or reading of specified data to the internal memory 52 is performed in step ST8.

If it is determined in step ST6 that the process ID specifies the data communication operation with the PLC 19, the process proceeds to step ST9 to determine the PLC 19 to be the communication partner from the value of the destination address. . That is, as shown in FIG. 10A, the destination address, the communication port number thereof, and the type of communication protocol used in the PLC 19 connected to the communication port 40 are stored in a table in advance, and the table is used for communication. A protocol is selected in step ST10.

Thereafter, based on the contents of the first data shown in FIG. 6B and the format information 16 and the conversion table 15 of the selected communication protocol, the data conforms to the communication protocol used in the PLC 19 for data communication. Format command data is created (step 1
1), the command data is transmitted to the corresponding PLC 19 in step ST12.

On the other hand, in step ST4, the presence or absence of a change in the data content in the buffer memory provided for each communication port 40 is sequentially examined. If a communication port having a change in the content is found, the process proceeds to step ST13 to fetch the data. Specify the communication partner from the port number. Further, in step ST14, the communication protocol used is checked using the table of FIG. 10A, and the common data transfer format using the intermediate code is determined from the format information 16 and the conversion table 15 corresponding to the communication protocol. After the conversion according to step 49, step ST
At 15, predetermined data processing such as data transmission to a host computer 46 via a common communication line 48 is performed.

In the above-described embodiment, the case where the number of PLCs 19 connected to the programmable display device 22 and the type of protocol are known before starting the device and are not changed is illustrated. However, as shown in the flowchart of FIG. 9, by changing the number or type of the connected PLC 19 arbitrarily during operation, the PLC 1
The data communication can be performed from the host computer 46 to the PLC 19 without worrying about the connection state on the 9 side. Therefore, according to FIG.
A method for automatically determining the communication protocol used in the LC will be further described.

In the following description, the PLCs that may be connected to the programmable display device 22 are “A, A2, B, C” as communication protocols dedicated to the manufacturer and model. Although it is assumed that there are types, the number and types can be appropriately increased or decreased.

When the system is started in step ST21 of the flowchart shown in FIG. 9, the process enters a communication protocol selection process starting from step ST22. In this process, first, in step ST22, a command set in advance for protocol discrimination, such as "00", is transmitted from the display device 22 to the PLC 19.

Here, the command for protocol discrimination is selected from commands from which response data as different as possible can be obtained according to the difference in communication protocol.
Response codes are listed in advance for all protocols applied as shown in FIG.

Further, the protocol "A.A"
In the case where the same response code is returned as in “2”, another determination command “01” is set and FIG.
Create a similar correspondence table like

If no response from the PLC 19 is confirmed in step ST23, it is determined that data communication itself with the PLC 19 has not been established. Therefore, if it is determined in step ST24 that all the protocols have been checked, it is determined that the PLC 19 is not connected to the communication port 40 or that the communication protocol is other than the communication protocol prepared in advance.
The process moves to T25 and the determination operation ends. On the other hand, step S
If the next protocol exists in T24, after changing the protocol to be applied in step ST26, the process returns to step ST22 to repeat the above-described processing operation.

When the response from the PLC 19 is confirmed in step ST23, the process proceeds to step ST27, where the response code is made to correspond to the table in FIG. 10B, and the protocol is determined. For example, when the response code is “20”, the communication protocol is “B”, and when the response code is “30”, it can be determined that the protocol is “C”. After the correspondence table exemplified in FIG. 10 (a) is updated and the communication protocol to be used is determined, the normal data processing operation in step ST30 is continued.

However, if the response code confirmed in step ST27 is "10", the communication protocol cannot be determined because there is a possibility that the communication protocol is "A or A2". Therefore, the process proceeds to step ST31, and the determination command is changed to “01” illustrated in FIG. 10C, and a similar determination operation is performed. The response code in this case is "0
If "1", the protocol can be specified as "A", if "02", the protocol can be specified as "A2", otherwise, it is determined that the communication protocol is not supported.

Further, when a communication error occurs in step ST29 during the regular data processing, it is presumed that a change operation such as replacement of the PLC 19 connected to the display device 22 has occurred. .
In such a case, the process returns to the above-described communication protocol determination step from step ST22, and the apparatus is stopped by automatically setting a communication protocol suitable for the PLC 19 in the table of FIG. The setting operation of the communication protocol is completed in real time without the necessity of a manual initial setting operation in a state where the communication protocol has been set.

The display device 22 includes various data input / output means such as a video camera in addition to the PLC 19.
Various data such as video data can be transmitted through the display device 22 and the common communication line 48.

Furthermore, assuming that the type of the PLC 19 to be accessed is specified, a case where data is read / written by designating a unique address to the PLC 19 has been exemplified. However, the address is common to all the PLCs 19. By setting the address display in advance and preparing a conversion table with the address display in an expression specific to each model, it is possible to create a program without considering the type of the PLC 19 to be accessed at all. The performance is further improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram schematically showing a basic configuration of the present invention.

FIG. 2 is a block diagram illustrating an electrical configuration of a PLC and a programmable display device.

FIG. 3 is an explanatory diagram illustrating an example of a control operation using a processing instruction word.

FIG. 4 is an explanatory diagram showing a configuration of a processing instruction word.

FIG. 5 is an explanatory diagram showing a data transmission procedure via a display device.

FIG. 6 is an explanatory diagram showing an example of a data transfer format used in a common communication protocol.

FIG. 7 is an explanatory diagram showing an example of a data transfer format and a conversion table used in a dedicated communication protocol.

FIG. 8 is a flowchart showing a data transfer process.

FIG. 9 is a flowchart showing a communication protocol determination step.

FIG. 10 is an explanatory diagram illustrating a relationship between a communication protocol and a response code.

[Explanation of symbols]

 10 first data processing means 11 second data processing means 12 common interface means 13 dedicated interface means 14 protocol conversion means 15 conversion table 16 format information 17 display means 18 memory means 19 PLC 20 target system 21 controlled system Device 22 Program display device (data processing device) 23 CPU unit 24 Memory unit 25 Input unit 26 Output unit 27 Computer link unit 28 Display 29 Screen 30 Touch panel 31 Display control circuit 32 Touch panel controller 33 Bus line 34 CPU 35 ROM 36 RAM 37 RAM 37 Graphic controller 38 Communication controller 39 Dedicated communication line 40 Communication port 41 Static graphic 42 Part graphic 43 Event Data memory 44 Status data memory 45 Graphics memory 46 Host computer 47 Communication adapter 48 Common communication line 49 Common data transfer format 50 Dedicated data transfer format 51 Protocol information 52 Internal memory

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Minoru Yoshida, Inventor Minami 8-2-52, Nanko-Higashi, Suminoe-ku, Osaka F-term (reference) 5B089 GA01 GA21 KA06 KA10 KB04 KF05 KG04 KH04 5K034 AA19 AA20 CC01 DD01 FF01 FF11 FF14 FF20 HH01 HH02 HH16 HH26 HH61 KK04

Claims (3)

[Claims] An apparatus is provided between a first data processing means (10) for transferring data using a communication protocol specific to the model and a second data processing means (11) for transferring data using a common communication protocol. A common interface means (12) connected to the second data processing means (11) to exchange data with a common communication protocol; and one or more first data processing means (10). , The first data processing means (1
0) a dedicated interface means (13) for exchanging data with a dedicated communication protocol used between the common interface means (12) and the dedicated interface means (13), and a protocol for converting the communication protocol. A conversion unit (14), and a common interface unit (12) and a second data processing unit (11) that express contents to be processed by an intermediate code independent of a model. While the data is exchanged in the data format, the protocol conversion means (14) uses a dedicated data format that can be exchanged with the first data processing means (10) to perform data communication, and a second data processing Means (11)
A data processing apparatus which enables mutual conversion of data between a common data format passed between and. 2. A display means (17) which enables a predetermined display operation between said common interface means (12) and said dedicated interface means (13).
And memory means (18) for enabling data storage operation
2. The data processing apparatus according to claim 1, further comprising: transmitting and receiving the data in the display unit (17) and the memory unit (18) in the common data format. 3. The data passed through the common interface means (12) includes a code for specifying a screen processing on the display means (17) and a memory access to the memory means (18). And a code for specifying a data communication process between the first data processing means and the first data processing means, and a data processing operation corresponding to each code is performed.
The data processing device according to claim 1.