JP3155253B2 - Data transfer system, data transfer method and recording medium on which data transfer program is recorded - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system and a method for transferring data for controlling an industrial control device such as a programmable logic controller to the industrial control device, and a recording medium on which a program for the method is recorded. Things.

[0002]

2. Description of the Related Art An industrial control device called a programmable logic controller (hereinafter, referred to as a PLC) is used to implement various controls such as a sequence control, such as a belt conveyor type automatic assembling machine. It is widely used as a control device for controlling a target system. Further, in recent years, with the complexity of the target system, the introduction of a network control system in which a plurality of PLCs are connected to each other via a network line has been spreading.

In such a network control system, display of the operation status of each PLC and control instructions to the PLC are performed by a display device having a control function such as a programmable display disposed near the PLC. Further, in the above control system, even in a place away from the PLC or the display device, the operation status of the PLC can be monitored and the PLC can be monitored.
The host computer installed in such a place can also participate so that the control of the above can be performed.

In the above control system, for example, as shown in FIG. 9, PLCs 101... Are positioned at the center of control, and each PLC 101 has input / output devices such as sensors and actuators arranged at various points in the target system. A device 102 is connected to a display device 103 such as a programmable display device for performing display and control instructions.
Further, another PLC 101 or host computer 104 is directly connected to the PLC 101 via a predetermined interface circuit or indirectly via a dedicated adapter. Data transfer between the PLC 101 and the host computer 104 and between the PLCs 101 is performed using the communication function of the PLC 101.

In such a control system, it is required to appropriately update data for controlling the PLC 101 in the operation of the system. Specifically, it is necessary to frequently change the condition setting in each process in order to respond to recent demands for multi-product variable-volume production. For example, when the condition setting is changed every time all the processes of the production line are completed, the host computer 104 constantly inquires the PLC 101 arranged at the last station of the production line about whether or not all the processes are completed, and completes the process. If so, the CPU 101 determines which condition setting to change, and transfers control data corresponding to the condition setting to be changed to the PLC 101. Thereby, the PLC 101 rewrites the control data in the memory with the transferred new control data, and controls the input / output devices 102 based on the control data.

[0006]

Generally, the PLC 101 often uses different communication protocols for data communication for each model (for each manufacturer or even for the same manufacturer even for each product). Therefore, in the above control system,
P is used both between each PLC 101 and the host computer 104 and between the PLC 101 and the display device 103.
It is necessary to communicate using a communication protocol specific to the LC 101. As a result, a problem arises in that it is not easy to use different types of PLCs 101.

More specifically, since it is necessary to prepare a communication protocol for communicating with the PLC 101 in both the host computer 104 and the display device 103, it is necessary to manufacture and maintain the host computer 104 and the display device 103. It takes time and effort.

When the degree of difference between the communication protocols is small, the communication protocols necessary for establishing communication, such as a start character, a stop character, and a method for designating a transmission / reception address, are the same and are not so important. If only the command is different, the PLC 10
If a different command is not used by limiting the function actually used among the functions of the PLC 1, the PLC 1 of a different model is used.
It is not impossible to use 01 in combination. However, when an important command such as a command for communicating with a plurality of models is different, the host computer 104 and the PLC
Even if communication is established with the host 101, the host computer 104 cannot instruct the PLC 101 to perform a desired operation.

In addition, when the communication protocol itself required for establishing the communication is different, not only communication between the PLC 101 having different communication protocols and the host computer 104 is not established, but also the PLC 101 having the same communication protocol. Communication with the host computer 104 is hindered. Therefore, the PLC 101
Is required, a converter must be inserted into the network, and the communication protocol must be mutually converted so that the PLC 101 can be seen by the host computer 104 and other PLCs 101 as the same model. However, in the control system as described above, in general, not only the place where the converter can be installed is often limited, but also the cost of the entire control system increases with the addition of the converter. Further, since there are a large number of communication protocols of the PLC 101, for example, 100 types or more, a desired converter corresponding to those communication protocols does not always exist.

Therefore, in a control system in which the PLC 101 is arranged at the center of communication, it is difficult to use different types of PLC 101 together, and the choices when selecting the PLC 101 are limited. For this reason, conventionally, in a control system, the PLC 101 of the same model is often used.

Further, since the PLCs 101, which are positioned at the center of control, process most of the communication in the control system, the load on the PLCs 101 increases. More specifically, the PLC 101 has been developed from a sequencer using a relay, and has been used for I / O control such as on / off control of a switch and data acquisition from a sensor.
Since it is good at processing related to O-control, the ability to process communication of the control system as described above is often insufficient, and even if the ability is not insufficient, the burden is large. For example, if only the target system is to be controlled, the PLC 101 usually requires a storage capacity of about several tens of kilobytes and a processing capacity according to the storage capacity. It is difficult to process this communication at a sufficient speed.

As described above, in the conventional control system, the host computer 1 is
There is a problem that the control data cannot easily be transferred from the PLC 04 to the different types of PLC 101. Also,
In the above-described control system, in order to transfer control data to the PLCs 101, it is necessary to create a program for performing the above-described operations, and a great deal of labor is required for system development. Further, in order to realize the transfer of the control data as described above, a PL
There is also a method of using dedicated software capable of accessing the C101. However, even if such software is used, it is necessary to always inquire from the host computer 104 in which the software is installed to the PLC 101 that the data transfer condition is satisfied, and the efficiency of data communication is not so good.

The present invention has been made in view of the above-described problems, and efficiently and easily stores data for controlling a PLC of a different model without requiring special software.
An object of the present invention is to provide a data transfer system, a data transfer method, and a recording medium on which a program for the data transfer can be transferred to an LC.

[0014]

Means for Solving the Problems A data transfer system according to the present invention, in order to solve the above problems, a controller input device and the output device is connected, against the control device
A display-type control device that displays a control state of the control device and gives a control instruction to the control device; and a display-type control device that is provided above a plurality of the display-type control devices and has different communication protocols.
Hosutoko to set control data to be given to that the control device
A display control device and the control device.
The control device communicates with the above communication protocol unique to each control device.
Connected individually via a dedicated communication network
, The host computer and the display control device
Is a common network that communicates using a common communication protocol.
Are connected to each other via a network, and the display-type control device communicates between the control device and the host computer.
When relaying the signal, and protocol conversion means for converting a communication protocol used in the both networks to each other physician, the control device the control data from the host computer when the distribution condition set in advance is satisfied Setting means for setting the control data in association with the distribution condition, and reading out the control data corresponding to the satisfied distribution condition from the setting means. Reading means.

In the above configuration, the control data from the host computer is sent to the display control device via the common network. In the display control device, the communication protocol of the common network is converted into the communication protocol of the dedicated network by the protocol conversion means. Thereafter, the control data is transferred from the display-type control device to a control device connected via a dedicated network.

Thus, the display control device can always communicate with the host computer via the common network using the same communication protocol regardless of the communication protocol of the control device. As a result, even if control devices having different communication protocols coexist in a control system including the control device, the display control device, and the host computer, the host computer can easily transfer control data to these control devices. Can be.

[0017] Further, since the control means distributes the control data from the host computer to the control device when a preset distribution condition is satisfied by the distribution means, the timing of updating the control data from the host computer to the control device is improved. This eliminates the need to inquire as necessary, and the data can be automatically transferred. In the host computer, since the control data is set in advance by the setting unit in association with the distribution condition, the read unit reads the control data corresponding to the distribution condition. Thus, every time the distribution condition is satisfied, new control data is transferred to the control device, and the control data can be transferred in a timely manner.

The above data transfer system is described in more detail
Is the power supply of the display control device as the distribution condition.
At the specified time and the output data of the above controller.
When the input device and the output device are ON,
During the OFF period of the input device and output device,
When the rising edge is detected and when the output data falls
Is provided, and the delivery means is provided with the delivery condition
When the set distribution condition is satisfied,
Distribute the control data read by the stage. There
The data transfer system described above, more particularly,
Used for protocol conversion processing by protocol conversion means
Protocol information that employs different communication protocols
When the control device is connected to the display-type control device,
Be replaced.

The data transfer method according to the present invention, a control device for an input device and the output device is connected, to the control device
A display-type control device that is connected and displays a control state of the control device and gives a control instruction to the control device; and a control device that is provided above the display-type control device and has a different communication protocol. Host computer for setting control data given to the device
A display controller and the control device.
The device communicates with the above communication protocol unique to each control device.
While that will be connected individually via a dedicated network to perform,
The host computer and the display control device,
A common network that communicates with a common communication protocol
The display-type control device uses a control system connected to each other through the control system and the host computer.
When relaying the communication between Yuta, the communication protocol used in both networks and converts into each other physician, the said control data from said host computer when the delivery condition is met, which is set in advance control
The data is distributed to an apparatus , and the host computer sets the control data in association with the distribution condition, and reads out the control data corresponding to the satisfied distribution condition.

Also in this data transfer method, the communication protocol between the host computer and the display control device is converted by the display control device into the communication protocol between the display control device and the control device. Therefore, the display-type control device can always communicate with the host computer via the common network using the same communication protocol. As a result, the host computer can easily transfer control data to a control device having a different communication protocol. can do.

Further, since control data from the host computer is delivered to the control device when a preset delivery condition is satisfied, the data can be automatically transferred. Moreover, in the host computer, the control data is set in association with the distribution condition, and the control data corresponding to the above distribution condition is read out.
Each time the distribution condition is satisfied, new control data is transferred to the control device in a timely manner.

The above data transfer method is described in more detail
As the delivery condition, power on the display control device
Hour, specified time, change of output data of the above controller
When the input device and the output device are ON,
During the OFF period of the device and output device,
When rising is detected and the output data falls
At the time of detection of the
When the condition is satisfied,
To distribute the control data. Alternatively, the above data rolling
More specifically, the transmission system is used for protocol conversion processing.
Protocol information that can be
The control device used is connected to the display control device.
And switch .

According to the present invention, there is provided a recording medium on which a program for data transfer is recorded, comprising: a control device to which an input device and an output device are connected;
It is connected to the control device, to display the control state of the control device
Display type control device, and a plurality of display type control devices
Provided to the control device with different communication protocol
A host computer for setting control data
The display-type control device and the control device are provided for each control device.
Dedicated network that communicates with the above communication protocol specific to
Connected individually via the network, while the host
Computer and the display-type controller described above share a common communication protocol.
Connected to each other via a common network
In the display control device, the communication between the control device and the host computer is performed using the control system thus configured.
When relaying the signal, the host computer when converts the communication protocol used in the both networks to each other physician, delivery preset condition is satisfied
For distributing the control data from the data to the control device , and setting, in the host computer, the control data in association with the distribution condition, and reading out the control data corresponding to the satisfied distribution condition. The program is recorded.

According to the program recorded on the recording medium, the communication protocol between the host computer and the display controller is converted into the communication protocol between the display controller and the controller in the display controller. Is done. Therefore, communication between the display control device and the host computer can always be performed using the same communication protocol. As a result, the host computer can easily transfer control data to a control device having a different communication protocol. be able to.

Further, control data from the host computer is distributed to the control device when a preset distribution condition is satisfied, so that data can be automatically transferred. Moreover, in the host computer, the control data is set in association with the distribution condition, and the control data corresponding to the above distribution condition is read out.
Each time the distribution condition is satisfied, new control data is transferred to the control device in a timely manner.

More specifically, the recording medium described above is
As the communication conditions, when the power of the above display type controller is turned on,
Time, when the output data of the control device changes,
During the ON period of the input device and output device,
And the rise time of the output data during the OFF period of the output device
At the time of detection of the falling edge of the above output data
Is set, and the distribution condition set out of the above distribution conditions is satisfied.
The control read by the host computer
A program for distributing data is recorded. There
The above-mentioned recording medium, more specifically, protocol conversion
Protocol information used for processing is stored in different communication protocols.
The above-mentioned control device adopting a col
A program for switching when continued is recorded.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a control system according to this embodiment.
, A personal computer (hereinafter, referred to as a personal computer) 1, a plurality of programmable displays (hereinafter, referred to as a display) 2, and a plurality of PLCs 3.

The personal computer 1 and the display units 2 are connected to each other via a common network 4 capable of performing communication using a common communication protocol. On the other hand, the display 2 and the PLC 3 are individually connected via a dedicated network 5 capable of performing communication using a unique communication protocol for each PLC 3.

In the broad communication protocol, codes indicating start characters and end characters, transmission / reception timing of each character, a method of specifying a transmission destination and a transmission source, and the like are unified in a network including a transmission source and a transmission destination. If the communication protocol cannot transmit data normally if it is not, the operation desired by one and the operation performed by the other, if the transmission source and the destination are not unified, such as a command system that each PLC 3 can understand, will match. There is a communication protocol that cannot be controlled normally without the communication protocol. Therefore, in the following description, a combination of the two is referred to as a communication protocol, and when the two need to be distinguished, the former is distinguished as a transmission protocol and the latter is distinguished as a command system.

Here, in the communication protocol specified by the manufacturer of each PLC 3, when data reading is instructed,
Generally, as shown in FIG. 2, a control code (ESC) indicating that the code to be transmitted next is a command, and a PLC
Command code (R
D), a read start address (X0001), a read size (5), and a control code (R
Data train DT ₁ comprising ET) and is transmitted. However,
Between the PLCs 3, not only the command system including the command code but also the arrangement order of the address and the size, the control code itself, or the expression method for expressing the address and the size (the bit width and the character for indicating the numerical value are indicated. Code types) are often different from each other.

Therefore, in the present embodiment, the display 2
When performing data communication via the common network 4, regardless of the communication protocol transmitted over the dedicated network 5, the communication protocol ( Common protocol). Specifically, in the present embodiment, as the common network 4,
A local area network (LAN) such as Ethernet (trademark: Xerox Corporation) is used, and TCP / IP is used as a communication protocol in the common network 4.
Has been adopted.

For this reason, each display 2 and personal computer 1 connected to the common network 4 are assigned a unique IP address, and when communicating via the common network 4, as shown in FIG. In addition, TCP / I
Receive defined format data sequence DT ₂ in P. This data string DT ₂ includes a header section 11 including the IP addresses of the transmission source and the transmission destination, and a data body 12 indicating the communication contents.
And Thus, for example, even when a computer or the like used by a control system developer is connected via a telephone line from a location different from the control system operating company, a communication device capable of communicating by TCP / IP is used. If it exists, it is possible to freely participate in the common network 4 without obstructing data transmission between other communication devices.

Further, according to the common protocol, a common code 13 indicating the content of the command is included in the data body 12r when transmitting a command instructing data reading to the PLC 3.
And the related information 14 accompanying the common code 13 includes a read start address 14a and a read size 14b. Further, the data body 12 w when instructing the data write includes the write start address 14 c and the write data 14 d as the related information 14.

The common code 13 is a command code (each PL) in the dedicated network 5 between commands that can be understood by each PLC 3 and that have the same contents.
Irrespective of the command code in C3). In addition, for example, the order in which the data in the related information 14 is transmitted, such as the read start address 14a and the read size 14b, and the expression method at the time of transmission are unified regardless of the communication protocol in the dedicated network 5. Accordingly, in the common protocol, the command to be executed can be uniquely specified regardless of the type of the PLC 3 connected to the display 2.

The PLC 3 as a control device includes a CPU / power supply module, an input unit, and an output unit. The CPU / power supply module includes a CPU unit including a CPU and a memory, and a power supply unit that supplies power to each unit of the PLC 3. In accordance with the control program, the CPU unit receives input devices (in the figure, I
/ D) 6 based on a signal input from the input device, and performs a calculation process of recipe data (control data) given to an output device (O / D in the figure) 7. The input unit and output unit are
A portion having an interface function connected to the input device 6 and the output device 7, respectively, and exchanges a digital signal or an analog signal input / output with these devices with the CPU unit. .

As the input device 6, devices such as sensors (temperature sensors, optical sensors, etc.) and switches (pushbutton switches, limit switches, pressure switches, etc.) are used. As the output device 7, an actuator, a relay, a solenoid valve, a display, or the like is used. These input devices 6 and output devices 7 are arranged in required parts of various target systems such as a production line.

The display 2 as a display-type control device has an RA
It has memories such as M, ROM, flash ROM, and VRAM, and an arithmetic processing unit such as a CPU, and controls the operation of each unit of the display 2 by these. The display 2 includes a data processing unit 2a, interface units (I / Fs in the figure) 2b and 2c, an input unit 2d, a display unit 2e, a converted data storage unit 2f, and a data distribution unit 2g.

The data processing section 2a performs various data processings for performing display control of a control screen, protocol conversion, and data distribution. This data processing unit 2a
Software that can be provided in the form of program media as package software,
Is downloaded to the display unit 2 from. Further, this software may be installed in the display 2 in advance at the time of shipment of the display 2 as necessary.

As for the display control of the control screen, the data processing unit 2a draws the control screen on the display unit 2e using a VRAM or the like based on the screen data created by the personal computer 1. In the control screen, an image in which the input device 6 and the output device 7 are designed is synthesized as a component on a background screen imitating the target system. In the control screen configured as described above, the parts are input / output devices 6 and 7.
The operation status of the input device 6 and the output device 7 is visualized.

Here, the program medium is a recording medium configured to be separable from the personal computer 1 and the display 2, such as a tape system such as a magnetic tape or a cassette tape, a magnetic disk system such as a floppy disk or a hard disk, Optical disc system of optical disc such as CD-ROM, MO, MD, DVD, etc., card system such as IC card (including memory card), optical card, or mask RO
A medium that fixedly holds a program, including a semiconductor memory such as an M, EPROM, EEPROM, or flash ROM, may be used.

Since the control system of the present embodiment has a system configuration that can be connected to a communication network including the Internet, it is a medium that carries the program in a fluid manner so as to download the program from the communication network. Is also good. However, when the program is downloaded from the communication network as described above, the download program may be stored in the personal computer 1 in advance, or may be installed from another recording medium.

The protocol conversion process is performed on both networks 4
If the communication protocols in 5 are different from each other, this is a process of converting one communication protocol to the other communication protocol with reference to the data stored in the conversion data storage unit 2f. In the data distribution process, when a preset distribution condition is satisfied, output data taken from the input device 6 into the memory of the PCL 3 and output from the PLC 3 is distributed to the personal computer 1 or another display device 2, The recipe data set by the personal computer 1 is displayed on each PLC 3 via the display 2.
This is the process of delivering to

The interface unit 2b is connected to a common network 4 for performing communication between the personal computer 1 and another display device 2. The recipe data from the personal computer 1 is transferred from the display 2 to the PLC 3 by the communication via the common network 4 as described later. On the other hand, the interface unit 2c is connected to the dedicated network 5 for performing communication with the PLC 3. The above-described recipe data is transferred to the PLC 3 by communication via the dedicated network 5 as described later.

The input section 2d is constituted by an input device such as a touch panel for inputting on the display screen of the display section 2e. For this reason, the display unit 2e is configured by a flat display element such as a liquid crystal panel or an EL panel.

The conversion data storage unit 2 f stores data necessary for protocol conversion process. This data may be in any format as long as the communication protocol can be converted between the dedicated network 5 and the common network 4. The converted data storage unit 2 f according to the present embodiment is transmitted over the dedicated network 5. Data transfer format FMT indicating the format of the data
• Stores a command conversion table TBL indicating the correspondence between command codes transmitted in 5.

[0047] Specifically, as shown in FIG. 2, the data transfer format FMT is in data string DT ₁ transmitted in the dedicated network 5, e.g., data content itself to read or write, the size of the data, read and write Is a skeleton-like data string in which a portion that changes according to the data content to be actually transmitted, such as an address, is undefined, and only the purpose is defined for the undefined portion. If the command area is undefined, the data transfer format FM extracted from the data string actually transmitted is used.
If T is common to a plurality of commands, the command area may be undefined, and a common data transfer format FMT may be used between these commands.

The command conversion table TBL includes:
As shown in FIG. 4, the correspondence between the common code transmitted on the common network 4 and the command code transmitted on the dedicated network 5 is stored. Data processing unit 2a
Converts one code to the other code based on the command conversion table TBL (for example, TBLa and TBL).
Between BLb).

The data distribution unit 2g distributes recipe data set in the personal computer 1 and output data from the PLC 3 to a designated distribution destination when a preset distribution condition is satisfied. For this reason, the data distribution unit 2g
Node information about the distribution destination node and setting information about the distribution are downloaded from the personal computer 1 and stored in advance. The setting of the distribution condition will be described later in detail.

Personal computer 1 as host computer
CPU, memory (R)
It has an external storage device (hard disk drive, MO drive, etc.), a display device, and an input device (keyboard, mouse, etc.). As shown in FIG. 1, the personal computer 1 includes a data communication processing unit 1a,
Interface unit (I / F in the figure) 1b, distribution setting unit 1c, network file 1d, data file 1
e, an application section 1f and a recipe information file 1g.

The interface unit 1b is connected to a common network 4 for performing communication with the display 2.

The data communication processing section 1a is a section for performing data communication processing with the display devices 2 via the common network 4 and for exchanging data with the application section 1f. This data communication processing unit 1a
In order to transfer screen data created in the personal computer 1 with drawing software (not shown) to the display 2 or to distribute recipe data set in the application 1f from the display 2 to the PLC 3, for example, A process of reading recipe data from 1f is performed (reading means). The data communication processing unit 1a is software that can be provided in the form of a program medium as package software, and is installed in the personal computer 1 in advance. This program medium is also a recording medium that is configured to be separable from the personal computer 1 and the display 2, similarly to the above-described program medium.

The data communication processing section 1a sets conditions for accessing recipe information preset in the application section 1f. Here, an example in which commercially available application software is installed in the application unit 1f will be described, but a user application may be installed.

As the application section 1f, for example, general-purpose database software is installed. As the database software, for example, Access (registered trademark: Microsoft Corporation) is preferable because of its high penetration into the public and ease of external control, but software that can write data to a plurality of tables is preferred. If so, other software may be used. Application section 1
f is not limited to database software, but may be other application software as long as it can provide a form in which recipe data can be written (set).

The database software provides a recipe information table 21 shown in FIG. 5 (a) and a recipe DB master table 22 shown in FIG. 5 (b), in which various settings such as data are made. ing. The recipe information table 21... And the recipe DB master table 22 are stored in the recipe information file 1g.

The recipe information table 21 is a table for setting recipe data, and a plurality of recipe information tables are prepared. This recipe information table 21 contains NODE, SY
Each setting item (field) of MBOL, TYPE, DATA and NUMBER is provided as a default name.

"NODE" indicates the node name (station name) of the connection node (station) in the common network 4, and the name of the display 2 and the like can be entered. "SYM
"BOL" indicates the name of the device to which the recipe data is to be transferred. “TYPE” indicates the data type of the device. This data type is a data expression type that combines a data expression format (bit format (16 bits, 32 bits, etc.) or a character string format) and a numeric expression format (presence or absence of decimal code, hexadecimal, BCD, etc.). And 1 to 1 corresponding to these combinations.
It is set with a number such as 0. "DATA" represents recipe data to be given to the PLC 3, and "NUMBER" represents the number of recipe data.

The recipe DB master table 22 is a table for managing the recipe information table 21, and includes KEYCODE, MDB, and TBL.
Each setting item (field) is provided as a default name.

"KEYCODE" is a key code associated with the above-described ID code, and is set in accordance with distribution conditions described later. “MDB” indicates an access file name specified on a setting screen (see FIG. 6) provided by the data communication processing unit 1a described later. "TB
“L” represents the name of the recipe information table 21.
For example, table names "T1", "T2" and "T3"
Respectively represent the first to third recipe information tables 21 in FIG.

The above item names (field names) in the recipe DB master table 22 and the recipe information table 21 can be changed by the data communication processing section 1a as described later.

When general-purpose database software is installed as the application unit 1f, the data communication processing unit 1a changes a setting screen as shown in FIG. 6 for setting parameters and a field name of the recipe information table 21. A setting screen as shown in FIG. 7 is provided.

The setting screen shown in FIG. 6 includes “access file designation”, “mdb file selection”, and “table selection”. "Access file specification"
Is a field for specifying a file to be accessed, and the file can be specified hierarchically. “Mdb file selection” is the storage destination m as the database file
This is an entry column for selecting a db file, and “table selection” is an entry column for selecting a table in which recipe data is to be set.

In the “recipe DB master table” on the setting screen shown in FIG. 7, the key code, the access file name and the recipe information table are in the default state.
As described above, "KEYCODE" and "MD
B "and" TBL ", a desired name can be set in each entry column. In the “recipe information table” of this setting screen, the node name, symbol name, data type, data and number are “NODE”, “SYMVOL”, “DATA” and “DATA” in the default state, respectively, as described above. NUMBER ", but a desired name can be set in each entry column.

The distribution setting section 1c sets node information and distribution information. The node information includes a node in the common network 4 and a type of the display 2 connected to the node. The distribution information includes a symbol name of a device (input device 6 and output device 7) connected to each PLC 3, a data distribution timing for each display 2, a store address of data to be distributed, a store address of received data, and the like. Contains. These node information and distribution information are stored in the network file 1d and downloaded to the data distribution unit 2g of each display 2 as needed. The distribution setting unit 1c is software that can be provided in the form of program media as package software, and is installed in the personal computer 1 in advance. This program medium is also a recording medium that is configured to be separable from the personal computer 1 and the display 2, similarly to the aforementioned program medium.

The distribution information is set on a setting screen as shown in FIGS. 8A and 8B. The setting screen is provided with “distribution conditions” and “distribution stations / reception stations”.

The “distribution conditions” shown in FIG. 8A include, as conditions for determining distribution timing, power-on, time designation, cycle designation, rewrite trigger, ON period, OFF period, rising trigger and falling trigger. Is provided.

"Power on" is a condition for performing distribution when the display 2 is powered on, and "Time designation" is a condition for performing distribution at a designated time. The “cycle specification” is a condition for performing distribution at each desired cycle, and the “rewrite trigger” is
This is a condition for performing distribution when output data is rewritten, that is, when output data changes. "ON period"
And the "OFF period" are conditions for continuously performing distribution in each of the ON period and the OFF period of the device, and the "rising trigger" and the "falling trigger" are output data (designated device output). This is a condition for performing distribution when each of the rising edge and the falling edge is detected.

In the lower area of the distribution condition setting screen, there is provided a column for inputting a symbol name of a device to be designated with respect to a condition based on a device output among the above conditions. Further below, there are provided a cycle (in units of ms) for checking distribution conditions, a setting column for a distribution period, and a setting column for a process of returning a device output to OFF or ON after distribution. . However,
The check cycle is valid only for the distribution conditions of “power on”, “time setting”, and “cycle specification”, and the period limitation is valid only for the distribution condition of “cycle specification”. Also,
For the setting to return the device output to OFF after distribution,
This is valid only for the “trigger trigger” distribution condition. If this box is not checked, the device output will remain
N remains. On the other hand, device output is turned on after distribution
Is valid only for the distribution condition of “falling trigger”. If this column is not checked, the device output remains OFF after distribution.

On the other hand, the “distribution station / reception station” shown in FIG. 8B is provided with information entry sections for the distribution station and the reception station. The information of the distribution station includes a device name (here, the file name described above) as an output source of the recipe data distributed from the personal computer 1, a symbol name of the device as an output source of the output data distributed from the display 2, and And the number of data to be delivered in the specified period. Also,
The information of the receiving station is stored in the PL corresponding to the display 2 serving as the receiving station.
Contains the symbol name of the device connected to C3.
However, when the personal computer 1 is the receiving station, the name given to the file created by the application unit 1f is used as the symbol name.

In the data file 1e, the above-mentioned protocol conversion data to be stored in the conversion data storage unit 2f is registered in advance. The converted data is downloaded to the required display 2 via the data communication processing unit 1a at the time of initial setting or at the time of maintenance such as when the PLC 3 connected to the control system is changed.

In the control system configured as described above, when the data sequence DT ₂ of the common protocol is received via the common network 4, the data processing unit 2 a
Extracts a common code 13 indicating a command to be transmitted to the PLC 3 and related information 14 from the data body 12.
Further, the data processing unit 2a outputs the command conversion table T
With reference to the BL, a command code that can be transmitted in the dedicated network 5 and corresponds to the common code 13 is selected. If necessary, the expression method of the related information 14 is converted to an expression method transmitted on the dedicated network 5. As a result, commands to be transmitted to the PLC 3
When the data content itself, the data size, the address, and the like are determined, the data processing unit 2a can generate a data sequence to be sent to the PLC 3 with reference to the data transfer format FMT.

On the other hand, when the data sequence DT ₁ is received from the PLC 3, the data processing unit 2 a applies the command indicated by the data sequence, the data content itself, the data size and the address to the data transfer format FMT. extracted, converted into the data string DT ₂ common protocol in the reverse order to the above.

The combination (protocol information) of the data transfer format FMT and the command conversion table TBL is set in accordance with the communication protocol of the PLC 3 before the display 2 and the PLC 3 communicate control-related data. PLC adopting
When 3 is connected, its protocol information is switched. For example, in FIG. 4, when the PLC 3 of the model A is changed to the PLC 3 of the model B, the command conversion table TBL
Switching from a to the command conversion table TBLb.

The communication protocol can be selected, for example, by the user operating the personal computer 1 or the display 2. Further, the display 2 sends a command capable of specifying the communication protocol of the PLC 3 to the PLC 3 while sequentially selecting communication protocols that the display 2 itself can send, and the PLC 3
The communication protocol may be automatically determined based on the response code from. The display 2 may store the above protocol information for all communication protocols adopted by the PLC 3 that can be connected to itself.
Only the communication protocol of the currently connected PLC 3 may be stored, and the communication protocol may be downloaded from the personal computer 1 or via a recording medium by various methods as necessary.

As described above, by generating the data string DT ₁ to be transferred to and from the PLC 3 in real time during the operation of the control system, the display 2 can display the input data without asking where it came from. , PLC3, and can respond immediately without stopping the control system even if the PLC3 is changed.

As described above, in the present control system, unlike the conventional control system, the indicators 2 are arranged at the center of communication, and the indicators 2 are connected to the common network 4 and the dedicated network 5. Connected to both sides. Further, when the communication protocols in the two networks 4 and 5 are different, the display 2 converts the respective communication protocols to each other, and connects between the PLC 3 connected to itself and the personal computer 1 or another display 2. Relay communications. Thereby, even if the communication protocols adopted by the PLCs 3 connected to the respective display units 2 are different from each other, communication can be performed between each display unit 2 and the personal computer 1 by using a common communication protocol.

More specifically, the target system includes an input device 6 such as a flow sensor, a temperature sensor, or a sensor for detecting the state of each part of the target system, and an output device such as a valve or a motor that operates according to an instruction. The input / output devices 6 and 7 are controlled by the PLC 3. In addition, PLC3 has a unique communication protocol for each model of PLC3, for example, for each manufacturer or each product type, due to the history of development from a sequencer. Therefore, the PLC 3 connected to the display 2 via the dedicated network 5 communicates with the display 2 using a communicable communication protocol.

Thus, the PLC 3 is connected to the display 2 or through the display 2 to another display 2 or the personal computer 1.
While transmitting the data acquired by the input device 6 as output data of the PLC 3, and receiving and outputting a control instruction (including recipe data) transmitted from the display 2 or from another station via the display 2. The device 7 can be controlled.

Here, the display 2 is an indispensable device for the control system. In recent years, the display 2 has a storage capacity of, for example, about several megabytes and is sufficient for displaying high-resolution images. Performs arithmetic processing at speed. Therefore, the display 2 can perform the above-described protocol conversion with a sufficient margin. In addition, P is placed between the display 2 and the personal computer 1.
Since the LC 3 is not interposed, the PLC 3 can concentrate on the control of the target system 2. Therefore, the storage capacity and the processing capacity can be reduced as compared with the above-described conventional control system in which the PLC processes most of the communication.

As an example of the processing with a large communication amount, when converting a product manufactured by the target system,
A process of downloading screen data from the personal computer 1 to the display 2 is exemplified. However, in the control system according to the present embodiment, since the screen data does not pass through the PLC 3, even when downloading the screen data, the PLC 3 can continue to operate normally with a small load.

Further, irrespective of the type of the PLC 3, communication is performed between the display units 2 and the personal computer 1 using a common protocol. Therefore, a plurality of types of PLCs 3 can be mixed in the same control system, and the range of model selection can be widened. Further, unlike the above-mentioned conventional control system, the common network 4 of the present control system has a common communication protocol. Therefore, for example, devices connected to the common network 4 such as hubs, bridges, and routers can be freely diverted, and the degree of freedom regarding the arrangement of these devices and the PLC 3 can be improved. In addition, since a converter for mutually converting communication protocols is not required, the manufacturing cost of the entire control system can be reduced.

In the control system in which the communication protocol is shared by the common network 4 as described above,
The recipe data of the PLC 3 can be easily distributed between each display 2 and the personal computer 1. Next, the distribution will be described in detail.

Here, each node A of the common network 4
To C, each display 2 is connected, and the PLCs 3 individually connected to the display 2 each have 100 input / output terminals. In such a configuration, the recipe data from the personal computer 1 is stored in the corresponding storage area of the memory in the PLC 3 for the output terminal of each PLC 3, and the output device 7 is controlled in response to the stored contents. . Further, for the input terminal of each PLC 3, the input device 6 is stored in the corresponding store area of the above-mentioned memory.
The input data from is written.

In the example shown in Table 1, 100 to 199, 200 to 299, and 200 to 299 are stored in the store areas corresponding to the 100 input / output terminals of the PLCs 3 corresponding to the nodes A to C, respectively.
Store addresses of 300 to 399 are assigned.

The data distribution unit 2g of the display unit 2 of the node A receives the address 10 at the preset time ○: ○.
The data in the storage area of 0 to 199, that is, all the input / output data is distributed, and the data is stored in the personal computer 1 and the display 2 of the node B. Similarly, from the display 2 of the node A, the addresses 100 to 14 are set every 10 seconds.
9, the data in the store areas 150 to 199 are distributed every 20 seconds, and the addresses 140 to 15 are stored when the display 2 is powered on.
Nine store areas are distributed.

[0086]

[Table 1]

When the output of the device connected to a certain terminal of the PLC 3 arranged in the last station rises at the end of all the processes, the data distribution unit 2g of the display 2 of the node C sends the recipe to the personal computer 1. Request data delivery. On the other hand, recipe data from the personal computer 1 is distributed to each PLC 3 via each display 2 of the nodes A to C, and stored in the storage areas of addresses 100 to 199, addresses 200 to 299, and addresses 300 to 299, respectively. You.

The personal computer 1 stores all data (output data of the PLC 3) distributed from each display 2. On the other hand, the indicator 2 corresponding to the PLC 3 provided at the most upstream side of the production line for the node A is
It does not take in the distribution data from the display 2 corresponding to each PLC 3 for the downstream nodes B and C. However, the display 2 (B / C) takes in all the distribution data from the display 2 (A / B) on the upstream side of the manufacturing line, and the display 2 (C) takes the display 2 (C). Part of the data from (A) is also captured. Each display 2 has a storage area required for storing distribution data in the data distribution unit 2g.

The data capture by the personal computer 1 and each display 2 may be performed by storing the destination address of the distribution data from the distribution source, for example, in the IP address. Also, when there are many receiving destinations, the above data capturing is performed by using the above IP address as a broadcast, and determining whether or not to capture the data in response to the distribution source IP address of the distribution data on the receiving side. May be determined.

Further, as with the personal computer 1, all the display devices 2 may have store areas corresponding to all the distribution data, and may have all the distribution data. Further, in the example shown in Table 1, for simplicity of description, the store address of the transmission data and the store address of the reception data match each other, but they do not always need to match, and are different from each other. You may.

As described above, when control data can be distributed between each display 2 and the personal computer 1, the recipe data set in the personal computer 1 can be easily transferred to each PLC 3
Can be forwarded to Subsequently, the transfer will be described in detail.

For example, when the output of the device connected to a certain terminal of the PLC 3 rises at the end of the entire process, the PLC 3 of the node C arranged at the last station of the manufacturing line, The delivery unit 2g confirms that the delivery condition of the “rising trigger” is satisfied, and transmits the satisfaction of the delivery condition and the type of the delivery condition to the personal computer 1 together. In the personal computer 1, upon receiving such information, the data communication processing unit 1a reads out the recipe data from the application unit 1f. At this time, in the recipe DB master table 22, the key code (KEYCOD)
One recipe information table 21 is selected as a table (TBL) corresponding to E), and recipe data is read from the recipe information table 21.

For example, when it is indicated that the entire process of manufacturing one line has been completed at the rising edge of the output of the device having the symbol name of LS1000, P
The bits of the area of the LS 1000 in the memory of the LC 3 are associated with the key code “2”. When the bit changes (starts up), the recipe DB
The recipe information table 21 having the table name “T2” corresponding to the key code “2” is selected by the master table 22. The recipe data of this recipe information table 21 is
When read by the data communication processing unit 1a, the data is transferred to the display 2 of each of the nodes A to C via the common network 4. Then, the recipe data for each node is transferred from each display 2 to each PLC 3 connected thereto, and written in the store area of each memory.

In the above example, the operation of distributing the recipe data from the personal computer 1 with the output change (rise) of the connected device of the PLC 3 in the last station as a trigger (distribution condition) has been described. The recipe data may be distributed using the output change of the connected device as a trigger.
Alternatively, the recipe data may be distributed using another distribution condition set on the distribution condition setting screen in FIG. 8A, for example, a specified time or cycle as a trigger.

As described above, in the control system according to the present embodiment, the display 2 absorbs the difference in the communication protocol for each model of the PLC 3 and facilitates data communication between each display 2 and the personal computer 1. ing. Therefore, the recipe data set by the personal computer 1 can be easily transferred to the PLC 3 of a different model. In addition, by using the data distribution function of the data distribution unit 2g, the recipe data distributed from the personal computer 1 to the display 2 is transferred to the PLC 3 every time the set distribution conditions are satisfied, so that the host computer can access the PLC. Unlike conventional software for performing such a process, it is not necessary to constantly inquire that the data transfer conditions are satisfied, and data transfer can be performed efficiently. Furthermore, since the data communication processing section 1a has a function of reading data from the application section 1f, there is no need for dedicated software for accessing the PLC as in the related art.

In the present embodiment, TCP / IP over Ethernet is adopted as the common network 4, but the present invention is not limited to this. For example, IEEE1
Other networks such as 394 may be used. Similar effects can be obtained if the network has a sufficient communication capacity for the personal computer 1 to communicate with each PLC 3 via the display 2.

In the present embodiment, the data sequence DT ₂ transmitted to the common network 4 includes, as shown in FIG.
It includes a header section 11 to which the PLC 3 is connected, but is not limited to this. For example, one PC
A configuration in which one display 2 is connected, and even when there are a plurality of displays 2, the personal computer 1 does not include the header unit 11 in a case where the personal computer 1 is individually provided with a port for communicating with each display 2. If the communication partner can also be specified, the data string D
Even T ₂ is not include the header portion 11, the same effect can be obtained.

[0098] In this case, as the common network 4, a network such as RS-232C which does not need to include a header part in the transmission protocol is adopted. However, in this case, the number of the display units 2 that can be connected to the personal computer 1 is limited by the number of ports of the personal computer 1 and the like. Therefore, if necessary the degree of freedom in the network configuration common network 4, as in the present embodiment, the header portion 11 included in the data string DT _2, who identifies the communication partner is desired.

[0099]

As described above, in the data transfer system according to the present invention, the input device and the output are output from the host computer.
Control devices with different communication protocols connected to
In order to transfer control data, the above-mentioned display-type control device and
And the above-mentioned control device has the above-mentioned communication protocol specific to each control device.
Connect individually via a dedicated network that communicates with
The host computer and the display type
The control device communicates using a common communication protocol.
Are connected to each other through a network, and the display-type control device is connected to the control device and the host computer.
When relaying communication between a protocol conversion means for converting a communication protocol used in the both networks to each other physician, the control data from the host computer when the distribution condition set in advance is satisfied Distribution means for distributing to the control device, wherein the host computer sets the control data in association with the distribution condition, and sets the control data corresponding to the satisfied distribution condition. Reading means for reading from the means.

Thus, the communication protocol used in the common network between the display control device and the host computer and the communication protocol used in the dedicated network between the display control device and the control device are mutually reciprocal. Is converted. Therefore, the display control device always uses the same communication protocol regardless of the communication protocol of the control device.
It can communicate with a host computer via a common network. As a result, the host computer can easily transfer control data to control devices having different communication protocols.

Further, since control data from the host computer is distributed to the control device when a preset distribution condition is satisfied, the timing for updating the control data from the host computer to the control device can be adjusted as required. It is not necessary to make an inquiry and the data can be automatically transferred. In the host computer, since control data is set in advance in association with the distribution condition, every time the distribution condition is satisfied, new control data corresponding to the above distribution condition is read out and sent to the control device. Since the data is transferred, the control data can be transferred in a timely manner.

Therefore, it is possible to transfer the data from the host computer to a control device having a different communication protocol for each model and to update the data in the control device, and to improve the data transfer efficiency.

The data transfer method according to the present invention employs a host
From the computer to which input and output devices are connected.
Transfer control data to control devices with different communication protocols
Therefore, the display-type control device and the control device
Dedicated for communication using the above communication protocol unique to each control device
While connected individually via a network, the host
Computer and the display-type control device are shared
Communication via a common network that communicates with
In the display control device, the control device, the host computer,
When relaying communication between said Hosutoko when converts the communication protocol used in the both networks to each other physician, delivery preset condition is satisfied
A method of distributing the control data from a computer to the control device , setting the control data in the host computer in association with the distribution condition, and reading out the control data corresponding to the satisfied distribution condition. .

Thus, the communication protocol of the control data transferred between the host computer and the control device is
The display type control device converts the data into the communication protocol of the transmission destination network. Therefore, the display-type control device
With the same communication protocol, communication with the host computer is enabled via a common network.
The host computer can easily transfer control data to control devices having different communication protocols.

Further, since the control data is distributed to the control device when the distribution condition is satisfied, the data can be automatically transferred. Further, in the host computer, every time the distribution condition is satisfied, new control data previously associated with the distribution condition is read and transferred to the control device, so that the data can be transferred in a timely manner.

Therefore, similarly to the above-described data transfer system, control data can be easily transferred to a control device having a different communication protocol for each model and updated in the control device, and the efficiency of data transfer can be improved. It has the effect of being able to.

The recording medium on which the data transfer program according to the present invention is recorded is input from a host computer.
Of the communication protocol to which the
The above display to transfer the control data to the control device
Type control device and the above control device are unique to each control device.
Via a dedicated network that communicates with the above communication protocol
And connected individually, while the host computer and
And the display-type control device communicate with a common communication protocol.
Systems connected to each other via a common network
Using control system, in the display-type control device, the
Relays communication between the controller and the host computer
When converts the communication protocol used in the both networks to each other physician, the control data from the host computer delivers to the control device when the distribution condition set in advance is satisfied, the host In the computer, a program for setting the control data in association with the distribution condition and reading out the control data corresponding to the satisfied distribution condition is recorded.

Thus, the communication protocol of the data transferred between the host computer and the control device is converted into the communication protocol of the transmission destination network in the display type control device. Therefore, communication between the display control device and the host computer can always be performed using the same communication protocol. As a result, the host computer can easily transfer control data to a control device having a different communication protocol. be able to.

Further, since the output data from the control device is delivered to the host computer when the delivery condition is satisfied, the data can be automatically transferred. Further, in the host computer, every time the distribution condition is satisfied, new control data previously associated with the distribution condition is read and transferred to the control device, so that the data can be transferred in a timely manner.

Moreover, since the above-mentioned program is provided in combination with a process for protocol conversion and distribution, there is no need for a dedicated software (program) for data transfer conventionally used.

Therefore, similarly to the data transfer system described above, control data can be easily transferred to a control device having a different communication protocol for each model and updated in the control device, and the efficiency of data transfer can be improved. In addition to the effect that the program can be used, the effect that the program can be effectively used is also provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a main part of a control system according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a communication protocol of a dedicated network and a data transfer format referred to when a programmable display in the control system converts the communication protocol.

FIG. 3 is an explanatory diagram showing a communication protocol of a common network.

FIG. 4 is an explanatory diagram showing a command conversion table referred to when the programmable display device converts a communication protocol.

FIGS. 5A and 5B are explanatory diagrams respectively showing a recipe DB master table and a recipe information table set in an application unit of a personal computer in the control system.

FIG. 6 is an explanatory diagram showing a setting screen provided by a data communication processing unit of the personal computer for setting parameters for accessing a file created by the application unit.

FIG. 7 is an explanatory diagram showing a setting screen provided by the data communication processing unit for changing fields of a recipe DB master table and a recipe information table.

FIGS. 8A and 8B are explanatory diagrams respectively showing a distribution condition setting screen and a distribution station / reception station setting screen set by a distribution setting section of the personal computer.

FIG. 9 is a block diagram showing a configuration of a main part of a conventional control system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Personal computer (host computer) 1a Data communication processing part (reading means) 1c Data distribution setting part 1f Application part (setting means) 1g Recipe information file 2 Programmable display (display control device) 2a Data processing part 2f Conversion data storage parts 2g data distribution unit (delivery means) 3 PLC (controller) 4 common network 5 dedicated network 6 input device 7 output device 21 recipe information table 22 recipe DB table

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-225831 (JP, A) JP-A-10-224386 (JP, A) JP-A-9-91012 (JP, A) JP-A-10-210 105214 (JP, A) JP-A-8-212112 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G05B 19/04-19/05

Claims (9)

(57) [Claims] 1. A control device input device and the output device is connected, is connected to the control device, to display the control state of the control device,
A display control device for giving a control instruction to the control device; and a communication protocol provided above the plurality of display control devices.
Set the control data to be given to the above controllers with different
That host and a computer, the display type control device and the control device, the control device for each
Dedicated network that communicates with the above communication protocol specific to
Connected individually via the network, while the host
And the display-type control device, a common communication protocol
Connected to each other via a common network
And the display-type control device is connected to the control device and the host computer.
When relaying communication between the computer, the control from the host computer when a protocol conversion means for converting a communication protocol used in the both networks to each other physician, delivery preset condition is satisfied Distribution means for distributing data to the control device, wherein the host computer sets the control data in association with the distribution condition, and sets the control data corresponding to the satisfied distribution condition. A data transfer system comprising: a reading unit that reads from the setting unit. 2. The display type control device according to claim 2 , wherein
When the power is turned on, at the specified time, the output data
When the data changes, the ON period of the above input device and output device
During the OFF period of the input device and output device,
When the rising edge of the force data is detected and the above output data
At the time of detecting the fall of
When the matter is met, it was read out by the upper Symbol reading means
The method according to claim 1, wherein the control data is distributed.
Data transfer system. 3. A protocol by said protocol conversion means.
The protocol information used for the conversion process is stored in different communication protocols.
The above-mentioned control device adopting the protocol is the above-mentioned display type control device.
Characterized by being switched when connected to
3. The data transfer system according to 1 or 2. 4. A control in which an input device and an output device are connected.
A device and a control state of the control device connected to the control device
Display type for displaying a control instruction to the control device
A control device and a plurality of display-type control devices.
Control given to the above-mentioned control devices with different communication protocols
A host computer for setting data.
Indicative control device and the above control device are unique to each control device
A dedicated network that communicates with the above communication protocol
Connected individually via the host computer
And the above-mentioned display-type control device uses a common communication protocol.
Connected to each other via a common network
The display-type control device uses a control system and the control device and the host device.
When relaying communication with a remote computer,
Convert communication protocols used in the network to each other
And that the preset delivery conditions have been met.
The control data from the host computer
Distributed to the control device, and the host computer corresponds to the distribution conditions.
And set the above control data
Reading the control data corresponding to the distribution condition
A data transfer method characterized by the above-mentioned. 5. The display-type control device according to claim 1, wherein:
When the power is turned on, at the specified time, the output data
When the data changes, the ON period of the above input device and output device
During the OFF period of the input device and output device,
When the rising edge of the force data is detected and the above output data
The time of detection of the falling edge is provided, and the distribution condition set among the above distribution conditions is satisfied.
When the control data read by the Really computer
5. The data transfer according to claim 4, wherein
How to send. 6. A protocol used in a protocol conversion process.
Control information using different communication protocols.
Switching when the device is connected to the display control device
The data transfer method according to claim 4 or 5, wherein
Law. 7. A control to which an input device and an output device are connected.
A device and a control state of the control device connected to the control device
Display type for displaying a control instruction to the control device
A control device and a plurality of display-type control devices.
And a host for setting control data to be given to the control device.
A display-type control device,
The control device uses the above communication protocol unique to each control device.
Connected individually via a dedicated network for communication
On the other hand, the host computer and the display control device
Devices that communicate using a common communication protocol.
A control system connected to each other through a network, the display-type control device includes the control device and the host.
When relaying communication with a remote computer,
Convert communication protocols used in the network to each other
And that the preset delivery conditions have been met.
The control data from the host computer
Distributed to the control device, and the host computer corresponds to the distribution conditions.
And set the above control data
To read the control data corresponding to the distribution conditions
Computer-readable computer with recorded programs
recoding media. 8. The display-type control device as the distribution condition.
When the power is turned on, at the specified time, the output data
When the data changes, the ON period of the above input device and output device
During the OFF period of the input device and output device,
When the rising edge of the force data is detected and the above output data
The time of detection of the falling edge is provided, and the distribution condition set among the above distribution conditions is satisfied.
And the control data read by the host computer
Program for distributing the mounting serial to claim 7 recorded the serial
Recording medium. 9. A protocol used in a protocol conversion process.
Control information using different communication protocols.
Switch when the device is connected to the display control device.
9. The recording medium according to claim 7, wherein a gram is recorded.
body.