JP2000032554A - Communication control system, wired system and communication device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] A device capable of performing wired communication with a control device and wirelessly communicating with another wireless device, a wired system connecting the device with the control device via a wired network, and a wireless system configured with the wired system A communication control system including a wired system of a communication destination. SOLUTION: A wireless slave 12 is connected to an assembling apparatus 13 by an I
After receiving a command to acquire I / O data, I / O data is acquired from the assembling apparatus 13, and then an information data read command to read the acquired I / O data is sent from the wireless master 11. When received, the acquired I / O data is transmitted to the wireless master 11 via the wireless network. The wireless master 10 obtains the I
When receiving an information data request command from the terminal 10 for acquiring the / O data, the I / O data is transmitted to the terminal 10 by wire communication via the wire network 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control system constructed by a wired network for performing wired communication and a wireless network for performing wireless communication, wherein a centralized management terminal of the wired network manages the entire system. The present invention relates to a system and a communication device.

[0002]

2. Description of the Related Art Conventionally, in the OA field, as shown in FIG. 15, for example, a wired LAN (LOCAL Area Network) 50 using an Ethernet 52 connected to a personal computer 51 as a host station, and a slave station. Personal computer 61 and wired communication L
A wireless communication LAN 60 for wirelessly communicating between the ANs 50 via a gateway 55, both of which have a protocol (communication means) of CSMS / CD (Carrier Sense Multiple Acces).
s with Collison Detection) system has been constructed and used.

A wireless communication system used in the OA field transmits and receives data between a personal computer 61 as a slave station connected to a wireless communication LAN 60 and a personal computer 51 as a host station.

[0004]

However, in the field of FA, due to an environment where a lot of noise is generated,
A device capable of wired communication with the control device and capable of wireless communication with another wireless device, a wired system connecting the device with the control device via a wired network, and a communication control including the wired system and a wired system of a wireless communication destination A system was sought, but not implemented.

Accordingly, the present invention provides an apparatus capable of performing wired communication with a control device and wirelessly communicating with another wireless device.
It is an object of the present invention to provide a wired system that connects this device and a control device via a wired network, and a communication control system including the wired system and a wired system of a wireless communication destination.

[0006]

In order to achieve the above object, the present invention provides a first wired network in which a wireless slave and one or a plurality of control devices for controlling a device to be controlled transmit and receive information by wired communication. In addition, in a wireless network, information is transmitted and received between one or more wireless slaves and a wireless master by wireless communication, so that a request for wireless communication can be satisfied with respect to control processing.

Further, in the second wired network, information is transmitted and received between one or more wireless masters and the central control terminal by wired communication. Therefore, even if the control device fails, the entire system is not stopped, and Even when transmission is interrupted between the wireless master and the wireless slave, the controlled device can autonomously recover.

The wireless master has previously acquired information from a control device via the wireless slave, and the central control terminal transmits an information data request command to the wireless master as necessary. Since the information stored in the wireless master is acquired, the central management terminal can appropriately acquire information necessary for system management.

In the centralized management terminal, the information obtained from the control device is allocated to the memory by the bank allocation means based on the node specified by the node storage means. By doing so, it is not necessary to allocate memory to all wireless slave stations, and the memory use efficiency can be improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a communication control system, a wired system, and a communication device according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of an embodiment of a communication control system according to an embodiment of the present invention.

The communication control system according to this embodiment is shown in FIG.
As shown in the figure, a wired network 1 comprising a communication LAN
4 and a centralized management terminal 10 connected to the wired network 1
4 as a gateway between the assembling apparatus 13 and the centralized management terminal 10 and up to 16 wireless masters 11 and up to 16 wireless slaves for transmitting / receiving commands, responses, I / O data, etc. to / from each wireless master 11 12 and an assembling device 13 provided for each wireless slave 12.

In the communication control system according to the present embodiment, each wireless master 11 uses "WNI" as an ID for specifying a station.
D ”and“ WGID ”as an ID for specifying a channel.

Each wireless slave 12 also has "WGID" as an ID for specifying a station and "WNID" for specifying a channel.

Incidentally, the wireless master 11 shown at A in FIG.
Has “1” as “WGID” and “0” (all wireless masters have “0”) as “WNID”, and the wireless slave 12 indicated by B in FIG. “W
It has “1” as “GID” and “1” as “WNID”.

The central management terminal 10 manages (monitors) the status of each assembly device 13, and uses, for example, a PC (personal computer) or a PLC (programmable logic controller) as a device to be used.

The central control terminal 10 is a bank switching system for storing I / O data obtained from the assembling apparatus via the wireless slave 12 and the wireless master 11 in a memory (not shown) such as a RAM and a ROM. Has been adopted.

As shown in FIG. 2 (a), the central management terminal 10 executes a bank switching method.
The 1CH and the 52CH each have an OUT setting area 101 for storing information for designating the wireless master 11 and the wireless slave 12 for performing the data link. As shown in FIG. Information specifying the currently enabled wireless master 11 in 101CH is stored in the currently enabled wireless slave 1 in 102CH.
The information specifying 21 is transmitted to the wireless slave 12
The IN setting area 102 for storing lower data consisting of 0 to 15 bits out of I / O data consisting of 32 bits received from the I / O data and storing upper data consisting of 16 bits to 31 bits out of the above I / O data in 104CH. To have.

For example, 51C of the OUT setting area 101
If “0000 0000 0000 0001” is set at the H (channel) location, the wireless master 1 with WGID “1”
1 is designated, and 52 of the OUT setting area 101a is designated.
When "0000 0000 0000 0010" is set in the CH (channel), the wireless slave having the WNID of "2" is designated.

When "0000 0000 0000 0010" is set at the location 101CH in the IN setting area 102, the wireless master 11 whose WGID is "1" is valid, and "0000 0000" is located at the location 102CH. If “0000 0100” is set, the wireless slave 12 whose WNID is “2” is valid, and 32
Bit I / O data “1111 0000 0101 1010 0011 111
0 01010 0011 ”, the lower 16 bits of I / O data“ 0011 1110 01010 0011 ”are stored.
At the location H, the upper 16 bits of I / O data "1111 0000 0101 1010" of the 32 bits of I / O data are stored.

Even if the wireless master 11 and the wireless slave 12 are designated in the respective OUT setting areas 101 of the 51CH and 52CH, the I and LCHs stored in the IN setting areas 102 of the 103CH and 104CH may be related to the time lag. The / O data is not always assigned to the wireless master 11 and wireless slave 12 set in the OUT setting area 101.

Therefore, 51 in the OUT setting area 101
CH and 52CH stored contents and 101C
The contents do not always match the contents stored in the IN setting area 102 of H and 102CH.

The contents of the IN setting area 102 of 101CH and 102CH are the OUT of 51CH and 52CH.
After the contents of the setting area 101 are designated, the designation is made.

Each of the radio masters 11 transmits and receives signals between the radio slaves 12 to transmit and receive messages and I / O data and the like between the radio slaves 12 in a spread spectrum system, and stores a routing table (not shown) in a memory. And outputs a polling frame to one or a plurality of wireless slaves 12 registered in this table.
/ O data is received.

The radio master 11 is a radio slave 1
2 to output the I / O data received from the centralized management terminal 10 to the centralized management terminal 10 via the wired network 14 and to transmit a message from the centralized management terminal 10 to the assembling apparatus 13 via the wireless slave. Has become.

As shown in FIG. 3, the wireless master 11 includes an MPU 111, a power supply circuit 112, a communication driver 113 for transmitting and receiving I / O data and the like, a communication controller 114 for controlling transmission and reception of I / O data and the like, and a wireless module 1
15, a display setting unit 116, and a memory 117.

The MPU 111 performs protocol processing, control of each unit, and the like, and the memory 117 stores device settings and wireless network configuration information.

The radio module 115 forms a transmission signal composed of an analog signal by performing phase modulation (PSK) on the transmission signal, and forms a transmission signal in which a spread signal based on a spreading code is superimposed on the formed transmission signal. It has become.

The radio module 115 forms a reception signal from which a spreading code has been removed from the reception signal received from the spread antenna, and then converts a reception signal consisting of an analog signal from which the spreading code has been removed into a digital signal. Is formed.

The display setting unit 116 is used for setting operations relating to the operation of the wireless network and the remote I / O communication, for example, “WN”.
ID ”and the radio frequency channel are set, and the power is turned on and operating (normal, abnormal)
Etc. are displayed.

The wireless slave 12 is connected to a remote I / O bus 134 in the assembling apparatus 13 and has an I / O interface required by the central management terminal 10 for centrally managing the system.
When the O data is received from the assembling apparatus 13, the received I / O
While transmitting data to the wireless master 11 wirelessly, a message or the like transmitted from the central management terminal 10 via the wireless master 11 is transmitted to the assembling apparatus 13.

That is, the wireless slave 12 is a wireless slave when viewed from the wireless master 11 and also when viewed from the assembling apparatus 13.

Each of the wireless slaves 12
As shown in FIG. 7, an MPU 121, a power supply circuit 122, a communication driver 123 for transmitting and receiving a message including commands and responses, I / O data and the like, a communication controller 124 for controlling transmission and reception of a message including commands and responses, I / O data and the like, Wireless module 12
5, a display setting section 126 and a memory 127.

The wireless slave 12 is a wireless master 11
Since the configuration is similar to that described above, detailed description of each component will be omitted.

As shown in FIG. 5, each of the assembling devices 13 includes a PLC 131 for controlling the devices to be controlled such as sensors and actuators, a remote I / O slave 132 including a temperature control device, and a PT ( A remote I / O slave 133 composed of a programmable terminal is connected to a remote I / O bus 134.

Here, the PLC 131 has a remote I / O
It is a remote I / O master on the bus 134.

The PLC 131 includes a remote I / O master unit 1311 for controlling remote communication between the remote I / O slaves 132 and 133 and the wireless slave 12,
It comprises a CPU unit 1312 for controlling the LC body and a power supply unit 1313.

Remote I / O master unit 1311
Are I / Os from the remote I / O slaves 132 and 133.
It has a memory (not shown) for allocating O data.

Remote I / O slaves 132 and 133
Is a message consisting of a command and a response, I
Remote I / O communication units 1321 and 1331 for transmitting and receiving I / O data and the like, and controlling transmission and reception thereof, and a slave function unit 1 for executing predetermined processing as a slave
322 and 1332.

The wireless slave 12 is a slave station of a wireless network formed between itself and the central control terminal 10 and has a remote I / O of the assembling apparatus 13.
It is also a slave station in the wired network constituted by the bus 134.

FIG. 6 is a block diagram showing the configuration of an OUT setting area 1311a in a memory for allocating I / O data transmitted from the assembly apparatus to the central control terminal.

CH5 in the OUT setting area 1311a
Location 1 stores lower-order data (data consisting of 0 to 15 bits) of I / O data consisting of 32 bits to be transmitted to the central management terminal 10, and
The location of CH52 in the OUT setting area 1331a is as follows.
Higher-order data of I / O data (16 bits to 3
1-bit data).

Here, a description will be given, with reference to the ladder diagram shown in FIG. 7, of allocating I / O data to the OUT setting area 1331a composed of the CH51 and CH52.

When the contact having the contact number "51002" is turned on, the PLC 131 sequentially reads the 32-bit I / O data set in the DM (data memory) 0000 and DM0001 by the XFER instruction A.
I / O is set at the position of 51CH in the OUT setting area 1331a.
The lower data consisting of the lower 16 bits of the O data is allocated, and then the upper data consisting of the upper 16 bits of the I / O data is allocated to the location 52CH of the OUT setting area 1331a.

Subsequently, the processing operation of the communication control system of this embodiment will be described separately for each of the central control terminal 10, the radio master 11, and the radio slave 12, and
In the communication control system according to the present embodiment, processing operations until the centralized management device acquires I / O data from the assembly device will be described.

1) Processing Operation of Central Management Terminal FIG. 8 is a flowchart showing the processing operation of the central management terminal.

The central control terminal 10 stores information for setting the wireless master 11 and the wireless slave 12 for performing data link in the OUT setting area 101 in the memory, respectively.
CH and 52CH are designated (step 110).

Next, the central control terminal 10 performs the wireless master 11 and the wireless slave 12 for performing the data link designated to 51CH and 52CH of the OUT setting area 101.
Is determined in the IN setting area 102 as 101CH and 102CH (step 120).

The central management terminal 10 has the OUT setting area 1
01, the wireless master 11 and the wireless slave 12 performing the data link designated to 51CH and 52CH
If it is determined that no designation has been made to 101CH and 102CH in the setting area 102 (step 120;
N) Wait until specified.

On the other hand, the central control terminal 10 is a wireless master 11 and a wireless slave 12 that perform data links designated to 51CH and 52CH of the OUT setting area 101.
Is determined to be specified in 101CH and 102CH of the IN setting area 102 (step 120;
Y), 103CH, 104CH of IN setting area 102
, The lower data and the upper data in the I / O data are stored, and the process ends.

Next, the processing operation of the central management terminal will be described by taking the processing operation shown in the ladder diagram of FIG. 9 as an example.

In this ladder diagram, WGID is "1".
And I from the wireless slave 12 whose WNID is “2”
FIG. 11 is a ladder diagram for turning on a contact having a contact number “00200” when the lower data of the / O data is larger than 80.

The contact a whose contact number is "51002" is "O"
When it becomes “N”, the WGID is set to “1” by the MOV instruction A.
(Indicated by # in the figure indicates a constant) is set in the CH 51 of the OUT setting area 101, and the MOV instruction B indicates that the WNID is “2” in the OUT setting area. 101 is set to CH52.

Next, the contact a having the contact number "51002"
Becomes “ON”, the data stored in 101CH of the IN setting area 102 is changed to WG by the CMP instruction C.
It is compared whether the ID is “1” or not. If the WGID is “1”, the contact b having the contact number “25506” is turned on.
It is determined whether the data stored in 102CH of the setting area 102 has the WNID of “2”.

When the information stored in the 102CH of the IN setting area 102 is WNID = “2”, the contact b having the contact number “25506” is turned ON, and the contact number is “00201”. The contact c turns ON.

Subsequently, when the contact c having the contact number "00201" is ON, the CMP instruction E causes the I stored in the IN setting area 102 at the location of 103CH.
The lower data in the / O data is compared with 80.

As a result of the comparison, one of the IN setting areas 102
If the I / O data stored at the location of 03CH is larger than 80, the contact d having the contact number “25505” is turned on, and the contact number e having the contact number “00200” is turned on.

2) Processing Operation of Wireless Master 11 FIG. 10 is a flowchart showing the processing operation of the wireless master.

After being turned on, the wireless master 11 performs an initial process, that is, a process of confirming the join of the wireless slave 12 to the wireless network, a process of joining the wired network 14, and the like (step 21).
0), an information data read command is output to each wireless network, and wireless slave information is collected from each wireless slave 12 (wireless slave information includes I / O data) (step 220).

Subsequently, the wireless master 11 stores the collected wireless slave information in the memory (step 230). Thereafter, when receiving the information data request command from the central control terminal 10, the wireless master 11 stores the wireless slave information stored in the memory. Is determined to be transmitted to the central management terminal 10 (step 240).

If the wireless master 11 determines that there is no interrupt for transmitting the wireless slave information stored in the memory to the central control terminal 10 (step 240; N), the process proceeds to step 220. The processing shifts to continue the same processing as described above.

On the other hand, if the wireless master 11 determines that an interrupt to transmit the wireless slave information to the central control terminal 10 has been entered (step 240; Y),
Centralized management terminal 1 for I / O data stored in memory
0 to end the interrupt processing (step 25).
0), the process shifts to step 220 and the same processing as described above is continued.

3) Processing Operation of Wireless Slave 12 FIG. 11 is a flowchart showing the processing operation of the wireless slave 1.

After the power is turned on, the wireless slave 12 performs initial processing, that is, confirms whether or not there is a device failure, secures a memory area for enabling communication (step 310), and then performs an assembling operation. It is determined whether or not an interrupt by a command such as a remote I / O bus join confirmation command and an information data write command is received from the remote I / O bus 134 (step 32).
0).

Here, the remote I / O bus join confirmation command is a command for confirming whether or not to join the internal wired network consisting of the remote I / O bus 134 in the assembling apparatus 13, and the information data write command is , A command for storing the I / O data transmitted from the assembling apparatus 13 in the memory.

If the wireless slave 12 determines that an interrupt due to a command from the remote I / O bus 134 has not been entered (step 320; N), the process proceeds to step 340 described later.

On the other hand, the wireless slave 12
If it is determined that an interrupt due to a command from the O bus 134 is present (step 320; Y), an interrupt process specified by the command is executed.

For example, in the case of interrupt processing by a command such as an information data write command, the wireless slave 12
Stores the I / O data received from the assembling device 13 in the memory.

When the wireless slave 12 completes the interrupt processing by the command, it determines whether or not an interrupt by a command such as a wireless network join confirmation command and an information data read command is received from the wireless master 11 (step 340).

If the wireless slave 12 determines that an interrupt due to a command such as a wireless network join confirmation command or an information data read command has not been entered (step 340; N), it returns to step 320 and performs the same processing as described above. On the other hand, if it is determined that an interrupt due to a command such as a wireless network subscription confirmation command or an information data read command is present (step 34).
0; Y), execute the interrupt processing instructed by the interrupt (step 350), shift the processing to step 320, and continue the same processing as described above.

For example, in the case of interrupt processing by a command such as an information data read command, the wireless slave 12
Is the wireless slave information (I / O) stored in the memory.
(Including data) to the wireless master 11.

Next, the processing operation until the central management device 10 acquires 13 I / O data from the assembly device in the communication control system of this embodiment will be described with reference to FIG.

The wireless slave 12 is connected to the PL of the assembling apparatus 13.
When an information data write command is received from C131 (see FIG. 12), if I / O data is received, a response to the effect that I / O data can be received is transmitted to PLC 131 (FIG. 12). Reference).

When the PLC 131 of the assembling apparatus receives a response indicating that the I / O data can be received from the wireless slave 12, the PLC 131 transmits the lower 16 bits of the 32 bits of the I / O data. Then, upper data of the upper 16 bits is transmitted (see FIG. 12).

The wireless slave 12 is connected to the PLC 1 of the assembling apparatus.
When the lower data and the upper data of the I / O data are sequentially received from the memory 31 and stored in the memory, a response to the effect that the I / O data has been received is sent to the PLC 131 of the assembling apparatus. Transmit (see FIG. 12).

Thereafter, the wireless slave 12 receives the information data read command from the wireless master 13 (FIG. 12).
12), if the I / O data stored in the memory is being transmitted, a response to the effect that the I / O data can be transmitted is transmitted to the wireless master 11 (see FIG. 12). First, the lower 16 bits of lower data are transmitted to the wireless master 11 (see FIG. 12),
Subsequently, the upper 16-bit data is transmitted to the wireless master 11 (see FIG. 12).

The wireless master 112 receives the lower data and the upper data of the I / O data from the wireless slave 12, and receives the I / O data from the wireless slave 12 when these are stored in the memory. A response to the effect is transmitted (see a in FIG. 12).

Thereafter, upon receiving the information data request command from the central control terminal 10 (see FIG. 12B), the radio master 11 transmits the I / O data stored in the memory. After transmitting a response to the effect that the I / O data can be transmitted to the central management terminal 10 (see c in FIG. 12), first, the lower data is transmitted to the central management terminal 10 (see d in FIG. 12). Then, the upper data is transmitted to the central management terminal 10 (see e in FIG. 12).

The central management terminal 10 sequentially receives lower-order data and higher-order data of the I / O data from the wireless master 11, and when these are stored in the memory, sends the I / O data to the wireless master 11. A response indicating that the data has been received is transmitted (see f in FIG. 12), and the above-described processing is continued.

In the communication control system of this embodiment, the remote I / O bus 14
Since information is transmitted and received to and from the wireless master 31 via wireless communication, and one or more wireless slaves 12 and the wireless master 11 transmit and receive information to and from the wireless master 11 in a wireless network, the demands for wireless control control processing are satisfied. be able to.

In the wired network 14, one or more wireless masters 11 and the centralized management terminal 10 transmit and receive information by wired communication. Therefore, even if the control device fails, the entire system is not stopped, and Even when transmission is interrupted between the wireless master and the wireless slave, the controlled device can autonomously recover.

In the communication control system of this embodiment, the bank switching method is used as the I / O assignment method in the central control terminal. As shown in FIG. 13, lower order data of the received I / O data and A mapping method of assigning I / O to the upper data for each wireless slave 12 may be adopted.

However, when this mapping method is adopted, it is not necessary to specify the wireless master 11 and the wireless slaves 12, so that there is an advantage that the description of the program is simplified. I /
O data must be allocated to the memory, and there is a disadvantage that the memory use efficiency is low.

When the lower data of the I / O data from the wireless slave 12 whose WGID is “1” and WNID is “2” becomes larger than 80, the contact number becomes “00”.
If the content of turning on the contact which is 200 "is described by the mapping method, the result is as shown in FIG. 14, which is simpler than the ladder diagram described by the banking method in which the same content is described as shown in FIG. .

[0085]

According to the first aspect of the present invention, the first
In a wired network, one or a plurality of control devices that control a wireless slave and a control target device transmit and receive information by wired communication, and in a wireless network, one or more wireless slaves and a wireless master communicate information by wireless communication. Is transmitted and received, so that wireless control can be satisfied with respect to control processing.

Further, in the second wired network, one or a plurality of wireless masters and the centralized management terminal transmit and receive information by wired communication.
Even when the entire system does not stop and the transmission is interrupted between the wireless master and the wireless slave, the controlled device can autonomously recover.

According to the second aspect of the present invention, in the centralized management terminal, the bank allocating means allocates the information acquired from the control device to the memory based on the node designated by the node storage means, so that all the wireless slave stations , It is not necessary to allocate memory to, and the memory use efficiency can be improved.

According to the third aspect of the present invention, a device as a slave for transmitting / receiving information to / from a master wireless device by wireless communication and a control device for controlling a device to be controlled are connected to each other by wired communication. Therefore, the slave device can transmit the information received from the control device by wire through the wireless communication.

According to the fourth aspect of the present invention, when the information obtaining means obtains information from the control device, the information is obtained from the control device by wired communication, and the information transmitting means obtains information from the master device. In the process of transmitting the acquired information, the information is transmitted to the master side wireless device by wireless communication, so that it functions as a small station of the remote I / O and has a small station of the wireless remote I / O network. Function can be fulfilled.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of a communication control system according to the present invention.

FIG. 2 shows OUT of a memory included in a central management terminal in FIG. 1;
FIG. 3 is a block diagram showing a configuration of a setting area and an IN setting area.

FIG. 3 is a block diagram showing a configuration of a wireless master in FIG. 1;

FIG. 4 is a block diagram showing a configuration of a wireless slave in FIG. 1;

FIG. 5 is a block diagram showing a configuration of the assembling apparatus in FIG. 1;

FIG. 6 is a block diagram showing a configuration of an OUT setting area of a memory included in the PLC in FIG. 1;

FIG. 7 is a ladder diagram for allocating I / O to an OUT setting area of a memory included in the PLC in FIG. 1;

FIG. 8 is a flowchart showing a processing operation of the central management terminal in FIG. 1;

FIG. 9 is a ladder diagram describing the operation of the central management terminal in FIG. 1;

FIG. 10 is a flowchart showing the processing operation of the wireless master in FIG. 1;

FIG. 11 is a flowchart showing the processing operation of the wireless slave in FIG. 1;

FIG. 12 is an explanatory diagram illustrating a processing operation of the communication control system according to the embodiment;

FIG. 13 is a block diagram showing an IN setting area in a case where a mapping method is adopted as a method for designating a wireless master and a wireless slave to be data-linked by the central management terminal in FIG. 1;

FIG. 14 is a ladder diagram showing processing of the central management terminal when a mapping method is adopted.

FIG. 15 is a schematic configuration diagram of a conventional communication control system.

[Explanation of symbols]

 10 Central Management Terminal 101 OUT Setting Area 102 IN Setting Area 11 Wireless Master 111 MPU 112 Power Supply Circuit 113 Communication Driver 114 Communication Controller 115 Wireless Module 116 Display Setting Unit 117 Memory 12 Wireless Slave 122 Power Supply Circuit 123 Communication Driver 124 Communication Controller 125 Wireless Module 126 display setting unit 127 memory 13 assembling device 131 PLC 1311 remote I / O master unit 1312 CPU unit 1313 power supply unit 132,133 remote I / O slave 1321,1331 remote I / O communication unit 1322,1332 slave function unit 134 remote I / O bus 14 Wired network

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 5K033 AA06 BA03 BA08 DA01 DA03 DA13 DA17 DB12 DB15 DB18 5K048 BA25 DA02 DA07 DC01 DC03 HA01 HA02 5K067 AA05 AA26 AA34 BB21 EE12 GG01 GG11 HH05 HH12 HH23

Claims (4)

[Claims] 1. A first wired network for transmitting and receiving information by wired communication between a wireless slave and a control device that controls a control target device, and transmitting and receiving information by wireless communication between the one or more wireless slaves and a wireless master And a second wired network for transmitting and receiving information by wired communication between the one or more wireless masters and the central management terminal. 2. The node according to claim 1, wherein the central management terminal includes: a node storage unit configured to store information for specifying a node of the wireless master and the wireless slave through which the information passes when acquiring information from a predetermined control device; 2. The communication control system according to claim 1, further comprising: bank allocating means for allocating information obtained from said control device to said storage means based on the node designated by said node storage means. 3. A device as a slave that transmits and receives information to and from a master wireless device by wireless communication, and a controller that controls a device to be controlled transmits and receives information to and from each other by wired communication. And a wired system. 4. A communication device for transmitting and receiving information by wire communication to and from a control device for controlling a control target device, and for transmitting and receiving information to and from a master device by wireless communication. In the process of acquiring the information, the information acquisition means for acquiring the information to the control device by wired communication, and, in the process of transmitting the acquired information to the device of the master side, to the wireless device of the master side A communication device comprising: an information transmission unit that transmits information by wireless communication.