JP3195643B2 - Remote monitoring and control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring control system.

[0002]

2. Description of the Related Art Conventionally, there is a remote monitoring control system for controlling and monitoring a load using time division multiplex transmission. As shown in FIG. 11, this remote monitoring control system
A plurality of lighting load control terminals 3 and a monitoring terminal 2 for monitoring the operation of an operation switch 6 such as a wall switch are connected to a transmission line 4 composed of a pair of lines from Is connected to a lighting load 5 and the monitoring terminal 2 is connected to an operation switch 6.

The operation of the monitoring and control system will be described with reference to a multiplex transmission signal shown in FIG. 12. A multiplex transmission signal Vs having a format as shown in FIG.
Is transmitted, and the control terminal 3 and the monitoring terminal 2 are monitored and controlled. That is, the multiplex transmission signal Vs
Are a start pulse ST indicating the start of signal transmission, mode data MD indicating a signal mode, address data AD,
This is a bipolar (± 24V) time-division multiplexed signal including control data CD for controlling load, checksum data CS for detecting transmission errors, and a reply waiting period WT for setting a reply waiting period for reply data. Is used to transmit data.

In the control terminal 3 and the monitoring terminal 2, when the address data AD of the multiplex transmission signal Vs received via the transmission line 4 coincides with its own address set in advance. The control data CD of the multiplex transmission signal Vs is taken in, and the return data is synchronized with the signal return waiting period WT of the multiplex transmission signal Vs, and the return data is short-circuited through a current mode signal (transmission line 4 is connected via a suitable low impedance). (Transmitted signal).

On the other hand, the control device 1 is provided with a dummy signal transmitting means and an interrupt processing means. The dummy signal transmitting means constantly transmits the multiplex transmission signal Vs in which the mode data MD is set to the dummy mode. Further, when an interrupt signal Vi as shown in FIG. 12 (b) is returned, the interrupt processing means returns reply data from the monitoring terminal 2 which has generated the interrupt signal Vi.
That is, the monitoring terminal 2 connects the switch output of the operation switch 6, and sends an interrupt signal Vi in response to a change in the switch input when the switch output is turned on or off. In response to the interrupt signal Vi, the control device 1 transmits a multiplex transmission signal Vs for address search for each group address in order to search for the interrupted terminal device 2. The interrupted monitoring terminal 2 returns its own unique address as return data when the group to which it belongs is accessed. By this reply, the control device 1 can determine the monitoring terminal device 2 that has caused the interruption, and then transmits the multiplex transmission signal Vs having the address data AD of the monitoring terminal device 2 to switch the monitoring terminal device 2. Access and monitor terminal 2
In this case, the operation data of the operation switch 6 connected from is transmitted as return data.

[0006] On the basis of the operation data returned from the monitoring terminal 2 in this manner, the control device 1 controls the control data supplied to the control terminal 3 for controlling the load 5 corresponding to the monitoring terminal 2. A CD is prepared, and a multiplex transmission signal Vs including the control data CD is transmitted via the transmission line 4 to the control terminal 3.
By performing time division multiplex transmission, each lighting load 5 is individually turned on and off.

When such a multiplex transmission system is connected to a host system, the control terminal 3 is used as an interface with the host system to transmit contact information of the control terminal to the host system. Conventionally, a method or a method of connecting a gateway to the transmission line 4 and monitoring and controlling the load 5 by a host system via the gateway has been used.

[0008]

However, when the host system is connected in the above-described manner, the former method cannot communicate with the host system if a trouble such as a short circuit or disconnection occurs in the transmission line. there were. In the latter method using a gateway, it is necessary to convert the signal into a time-division multiplexed transmission signal once, so that there is a problem that it takes time for a command having a large data amount such as pattern setting.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a very simple and reliable interface between a host system and a multiplex transmission system. It can be carried out, on the upper system
When performing pattern control using commands from the system,
The amount of data related to pattern control managed by the system is small.
A remote monitoring and control system is provided. The object of the invention of claim 2 is that a higher-level system,
It can interface a plurality of multiplex transmission system with a single I / F device, perform the supervisory control of a plurality of multiplex transmission system in the host system, thereon, pattern by a command from the host system
When performing pattern control, the pattern managed by the host system
Another object of the present invention is to provide a remote monitoring and control system that reduces the amount of data related to control of the remote control.

The object of the invention described in claim 3 is, in addition to the object of the invention described in claim 2, in addition to the object of the invention described in claim 2, a plurality of multiplex transmission systems are linked to monitor and control the load of each multiplex transmission system. to provide a remote monitoring and control system capable.

[0011]

In order to achieve the above object, according to the present invention, a central processing unit and a plurality of monitoring terminals and control terminals are connected via a pair of transmission lines. The central processing unit transmits the multiplexed transmission signal to access the terminal, and gives the control terminal load control data based on the operation data of the operation switch connected to the corresponding monitoring terminal. In a remote monitoring control system comprising a multiplex transmission system for returning operation data of an operation switch connected to a monitoring terminal to a central processing unit as monitoring data during a reply standby period provided in a multiplex transmission signal,
The central processing unit includes communication means for communicating with the host system via a communication line, and creates the load control data based on a command sent from the host system, and transmits the load control result. A means for returning to the higher-order system, and a storage means for storing data of a target load of a pattern control for controlling a plurality of loads and a combined load sent from the higher-order system at the same time , And give it to the multiplex transmission system from the host system.
Commands for controlling the pattern
The control point of the transmission system and the control mode indicating the control content
The management point and control mode of the commands to be configured and given
From the combination of codes to the corresponding central processing unit.
To convert the pattern control to a pattern number to specify
And the combination of management point and control mode
Means for rewritably storing the relationship with the pattern number.
It is provided in the central processing unit .

According to a second aspect of the present invention, a central processing unit includes:
A plurality of monitoring terminals and control terminals are connected via a pair of transmission lines, a multiplex transmission signal is transmitted from a central processing unit to access the terminals, and a corresponding monitoring terminal is provided for the control terminals. Provide load control data based on the operation data of the operation switch connected to the operation terminal, and monitor the operation data of the operation switch connected to the monitoring terminal during the reply standby period provided in the multiplex transmission signal. In a remote monitoring and control system comprising a multiplex transmission system for returning data to the central processing unit, a plurality of central processing units of the multiplex transmission system are connected to each other via a communication line to form a network,
The central processing unit of each multiplex transmission system has communication means for communicating with the host system via a communication line, and creates the load control data based on a command sent from the host system, and Means for returning a control result to a higher-level system; storage means for storing data of a target load of pattern control for controlling a plurality of loads or a combined load sent from the higher-level system at a time. And an I / F device provided with another communication means for communicating between the network and the host system and a protocol conversion means is interposed between the communication line of the network and the host system, and Communication between the system and the central processing unit of each multiplex transmission system is performed via the I / F device , and the host system switches to the multiplex transmission system.
Commands for pattern control to be given
Control points indicating the control points of the double transmission system and the control contents
And control points and control of given commands
Set the corresponding central processing unit from the combination of modes
To convert the specified pattern control to the specified pattern number
Combination and conversion of means, management points and control modes
Means that rewritably stores the relationship with the pattern number to be written
Are provided in a central processing unit or an I / F device .

According to a third aspect of the present invention, in the second aspect of the present invention, the I / F device includes means for storing interlocking control data relating to the interlocking of each multiplex transmission system, and operates the monitoring terminal. The information necessary for the interlock control for controlling the control terminal provided in the other multiplex transmission system in conjunction with the information is stored when sent from the central processing unit via the communication line. Provide control information to the corresponding central processing unit of the multiplex transmission system via the communication line based on the data of the interlocking control,
The central processing unit of the multiplex transmission system given the control information creates control data for the load.

[0014]

[0015]

According to the configuration of the first aspect of the present invention, the communication between the central processing unit of the multiplex transmission system and the host system includes:
The monitoring and control of the multiplex transmission system can be performed by the host system only by transmitting and receiving the command by communication, so that the interface between the multiplex transmission system and the host system can be very simply and reliably interfaced. Also from higher system
Command to control the load of each multiplex transmission system
In this case, assign each to the central processing unit of the multiplex transmission system you want to control.
The data of the attached management point is retained in the upper system,
A control mode indicating the contents of this control point and pattern control
And commands from the host system as commands.
Able to control the pattern of multiple transmission system and support pattern control
Management point is the only data managed by the host system
And the amount of data managed by the host system is small.
I can do it.

According to the configuration of the second aspect of the present invention, monitoring and control of the multiplex transmission system can be performed by the upper system only by transmitting and receiving commands between the central processing unit of the multiplex transmission system and the upper system by communication. Therefore, it is possible to provide a very simple and reliable interface between the multiplex transmission system and the host system, and to connect a plurality of multiplex transmission systems to one I / O system.
It can be monitored and controlled by the host system through the / F device. Multiplex transmission by command from host system
When controlling the system load in a pattern,
The data of the management points assigned to the central processing unit of the transmission system
Data is held in the host system, and this management point and
Control mode indicating the contents of the
Multiplex transmission pattern control just by sending
Can be performed and managed by the host system corresponding to the pattern control.
Since only the management points need to be
The amount of data managed by the system is small.

According to the third aspect of the present invention, the control information for the control terminal of another multiplex transmission system can be easily controlled by the monitoring information of the monitoring terminal device of another multiplex transmission system through the I / F device.
A large-scale remote monitoring and control system can be easily constructed .

[0018]

The present invention will be described below with reference to examples. First, FIG. 1 shows a system of a basic example of the present invention. In this example , a general-purpose system such as RS-232C is connected between the host system 7 and the central processing unit 1 of the multiplex transmission system. Communication is performed using communication means. Of course RS485, R
Communication may be performed using S422 or multiplex transmission communication means.

As shown in FIG. 2, the central processing unit 1 has a communication circuit 10 for performing communication with the host system 7.
And a protocol conversion circuit 1 for converting a communication protocol
1, a multiplex transmission signal transmission / reception unit 14 for transmitting the multiplex transmission signal Vs and receiving a return signal, and storing target loads of group control for performing load control at the same time. A pattern / group data storage memory 12 for storing target loads of pattern control for controlling the patterns in correspondence with the respective patterns.
And signal processing for load and monitoring, control processing for controlling reading and writing to the pattern / group data storage memory 12, and signal processing for communication with the host system via the communication circuit 10. The monitoring control circuit 13 includes a CPU and the like.

In the normal monitoring and control of the multiplex transmission system, the same control as the conventional one is performed by the operation of the monitoring control circuit 13 and the multiplex transmission signal transmitting / receiving section 14 of the central processing unit 1.
On the other hand, when the central processing unit 1 receives a command from the host system 7, the monitoring control circuit 13 discriminates the content of the command, and performs multiplexing including control data CD for controlling the load 5 of the multiplex transmission system to be controlled. A transmission signal Vs is created and transmitted to the corresponding control terminal 3 through the multiplex transmission signal transmission / reception unit 14, and a control monitoring operation of returning monitoring information of the state of the load 5 through the control terminal 3 is performed.

When a command corresponding to setting data such as group control and pattern control is sent from the host system 7, the monitoring control circuit 13 converts the contents of the pattern / group data storage memory 12 into data from the host system 7. Rewrite and change. FIG. 3 is a flowchart showing an example of the case where the host system 7 performs load control. Next, the operation will be described based on the illustrated example.

In this example, the command sent from the host system 7 is a pattern control command, and the supervisory control circuit 13 of the central processing unit 1 that has received the pattern control command analyzes the command and performs pattern analysis based on the analysis. Read out the data of the pattern control from the group data storage memory 12, create the multiplex transmission signal Vs having the control data CD corresponding to the target load, and transmit it to the corresponding control terminal 3 through the multiplex transmission signal transmitting / receiving unit 14. The load 5 is turned on or off.

The corresponding control terminals 3... Return the monitoring information of the operation state of the load 5, and the monitoring control circuit 1
3 is a corresponding monitoring terminal 2 based on the monitoring information.
The multiplex transmission signal Vs having the control data CD indicating the load state is transmitted through the multiplex transmission signal transmission / reception unit 14. On the other hand, the monitoring control circuit 13 edits the returned monitoring information and returns it to the host system 7. The host system 7 can grasp and monitor the load state based on the pattern control reply data.

In the case of individual load control, the command sent from the host system 7 to the central processing unit 1 may include a load number to be targeted and data specifying the control terminal 3. The control data CD is analyzed and sent to the control terminal 3 corresponding to the target load 5.
Is transmitted. In this example, the central processing unit 1 of one multiplex transmission system is directly connected to the host system 7 via the communication line 8, but as shown in FIG. System 7
, The central processing unit 1 may be connected via the network I / F device 20.

[0025] The above example is one multiplex transmission system was to connect to a host system 7, it intended to be connected to a host system 7 a plurality of multiplex transmission system as shown in FIG. 5, the multiplex transmission of multiple the central processing unit 1 ₁ ... are mutually connected through the communication line 8 with building a lower network of the system,
The communication line 8 is connected to the communication line 9 of the host network to which the host system 7 is connected via the I / F device 30 and the I / F device 20 of the host network. communication between the central processing unit 1 ₁ ... and the multiplex transmission system is also capable system.

As shown in FIG. 6, the central processing unit 1 includes a communication circuit 10 such as RS485 connected to the signal line 8 of the lower network, a supervisory control circuit 13, a pattern group data storage memory 12, A transmission signal transmission / reception unit 14 and an address unit 15 for setting an address of the central processing unit 1 in the lower network are provided. On the other hand, the I / F device 30 is an I / F of the network of the host system 7.
A communication circuit 31 such as RS-232C for performing communication with the F device 20, a protocol conversion circuit 32 for converting a communication protocol, a communication circuit 33 such as RS475 for performing communication with a lower network, And a signal processing circuit 34 for distributing and editing signals transmitted and received between the upper and lower networks.

In the example of FIG. 5, control of individual loads, pattern control, and group control can be performed in the same manner as in the example of FIG. Settings can be made. Additionally or target all or more central processing units 1 ₁ ... to the command in the case of the pattern control and group control, perform the designation of the target individual central processing unit, all the central processing unit 1 ₁ ... Alternatively, in the case of controlling a plurality of central processing units 1 ₁ ..., The command is distributed and edited by the signal processing circuit 34 of the I / F device 30 and addresses are addressed to the target central processing units 1 ₁ . Can be given.

FIG. 7 is a flowchart showing a case where pattern control for the central processing units 1 ₁ and 1 ₂ is performed by a command of the host system 7. since the I / F unit 30 of the signal processing circuit 34 which has received the come pattern control commands sent a plurality of central processing units in question, and sends distributes commands to the corresponding central processing unit 1 _1, 1 ₂ . CPU 1 ₁ receives this command, 1 ₂ of the monitoring control circuit 13 reads the data of the pattern control from the pattern group data storage memory 12 on the basis of the analysis carried out command analysis, control corresponding to the target load The multiplex transmission signal Vs having the data CD is transmitted to the corresponding control terminals 3... Through the multiplex transmission signal transmission / reception unit 14, and the load 5 is turned on or off.

Then, the monitoring information of the operating state of the load 5 is returned from the corresponding control terminals 3.
3 is a corresponding monitoring terminal 2 based on the monitoring information.
The multiplex transmission signal Vs having the control data CD indicating the load state is transmitted through the multiplex transmission signal transmission / reception unit 14. On the other hand, the monitoring control circuit 13 edits the returned monitoring information and returns it to the I / F device 30.

The I / F unit 30 is connected to each central processing unit 1 ₁ , 1
Edit the pattern control reply data from ₂ and
It is sent to the host system 7 through the device 20. The host system 7 can grasp and monitor the load state based on the return data of the pattern control result. The above example
An embodiment based on the above is the system shown in FIG. In the present embodiment, a multiplex transmission system constituting a lower network has an interlocking relationship to enable pattern group control over a plurality of multiplex transmission systems.

That is, in this embodiment, as shown in FIG.
Corresponding to the pattern number or group number to the I / F device 30 are assigned to each pattern control or group control respectively the central control unit 1 ₁ ... every central controller ₁ ... and the pattern control in the synchronous control relationship Alternatively, a storage unit 35 for storing a table in which pattern numbers or group numbers assigned to each group control are assigned is provided, and the signal processing circuit 34 has a signal processing function for interlocking control of each central processing unit 1 ₁ . Has been added.

On the other hand, the central processing unit 1 ₁ ... Determines whether the monitoring information of the monitoring terminal 2 corresponding to the pattern control or the group control connected to its own multiplex transmission system is transmitted to the I / F device 30. A notification permission / non-permission data memory 16 is stored in correspondence with a pattern number or a group number assigned for each pattern control or group control.

In this embodiment, control and monitoring similar to the example of FIG. 5 can be performed, and interlocking control described below can be performed. First, when the operation switch 6 of the monitoring terminal 2 corresponding to the pattern control or the group control connected to its own multiplex transmission system is operated, the notification enable / disable data memory 16 stores the pattern number based on the monitoring information. Data indicating whether to transfer data or group number data to the I / F device 30 is stored for each pattern control or group control corresponding to each operation switch 6.

On the other hand, the storage unit 35 of the I / F device 30 stores the central processing units 1 _1, ... And the patterns associated therewith in association with the pattern number data or group number data transferred from the central processing unit 1 ₁ . A relation table of numbers or group numbers is stored. And Thus, in this embodiment, for example, when the operating switch ₆₁ of the monitoring terminal device 2 ₁ for pattern control to the central processing unit 1 ₁ is connected via a transmission line 4 is operated, the operation monitoring information corresponding to the is returned to the prior art as well as a central processing unit 1 _1. Based on the returned monitoring information, the central processing unit 1
₁ is a control terminal 3 connected to its own multiplex transmission system.
Of the control terminals 3 connected to the loads 5 to be subjected to pattern control are sequentially accessed, and the respective loads 5 are controlled.
Is turned on or off.

[0035] Based on the data at the same time stores the pattern number data corresponding to the monitoring information corresponding to the operation switch ₆₁ of the operation whether the notification of the determination whether the data memory 16 and transfers the I / F device 30 When the notification is made, data transfer is performed. I / F device 30
The other central processing units 1 ₁ ... Of the multiplex transmission system which are linked to the transferred pattern number data and the relation table storing the pattern number data in the storage unit 35 (shown in FIG. 9). It judged by more signal processing circuit 34, a central processing unit of the corresponding multiplex transmission system 1 _2, 1
_The pattern number data read from the relation table of the storage unit 35 is transmitted to ₃ ... As control information. When the central processing units 1 ₂ , 1 _3, ... Receive the pattern number data, the control terminals 3 connected to the corresponding loads 5 are sequentially accessed based on the pattern numbers, and the loads 5 connected to the respective control terminals 3 are connected. Is turned on or off.

The control that is provided in this manner a plurality of multiplex transmission system via the I / F unit 30 in one multiplex transmission system connected to and monitoring terminal device 2 ₁ ... of which the operation switch ₆₁ of the operation It is possible to perform pattern control or group control on the load 5 connected to the service terminal 3.
When pattern control is performed by a command from the host system 7, the command is transmitted to the central processing units 1 ₁ ... The control point is composed of the assigned management point and a control mode indicating a pattern control mode, for example, a mode such as full light, half light 1, half light 2, and extinguishment, and sends it to the I / F device 30, and sends the I / F device 3
The signal processing circuit 34 of any one of the central processing units 1 _1, ...
To determine whether the pattern control target, and to send the control information corresponding to the central processing unit 1 ₁ ....

[0037] Here, given a pattern number for each target load different pattern control, the central processing unit 1 ₁ ... and the pattern numbers for which corresponding to the combination of the control mode and the management point in I / F device 30 Relation table (FIG. 10)
Is stored using, for example, the storage unit 35, and the signal processing circuit 34 compares the command content from the host system 7 with the stored relation table to convert it into control information including pattern number data. it is sending corresponding to the central processing unit 1 ₁ ... Te.

[0038]

According to a first aspect of the present invention, there is provided a communication device for communicating with a central processing unit via a communication line with a host system, and controlling the load based on a command sent from the host system. Means for creating data and returning load control results to the higher-level system, target loads for group control for controlling multiple loads simultaneously, and pattern control for controlling combined loads sent from the higher-level system Storage means for storing the data of
Only by transmitting and receiving commands between the central processing unit of the multiplex transmission system and the host system by communication, monitoring and control of the multiplex transmission system can be performed by the host system. There is an effect that a simple and reliable interface can be achieved. So
System to give the multiplex transmission system from the upper system
Commands to control the target multiplex transmission system.
And a control mode indicating the contents of control.
Combination of control point and control mode of command
The pattern system set in the central processing unit corresponding to the
Means for converting the pattern number to
Pattern number to be converted and the combination of
Means for rewritably storing the relationship with the central processing unit
Multiplex transmission by commands from the host system.
When controlling the load of the transmission system by pattern control,
Management points assigned to the central processing unit of the transmission system
Data is stored in the host system, and this management point and
Control mode indicating the contents of turn control and command
Just by sending from the host system, the pattern system of the multiplex transmission system
Can be controlled and managed by the host system in response to pattern control.
Since only the management points need to be managed,
The effect is that the amount of data managed by the system is small.
You.

According to a second aspect of the present invention, a plurality of central processing units of a multiplex transmission system are connected to each other via a communication line to form a network, and the central processing units of each multiplex transmission system are connected to each other via a communication line. Communication means for communicating with the host system by means of the host system, means for creating the load control data based on the command sent from the host system, and means for returning the load control result to the host system; Storage means for storing target load data for group control for controlling a plurality of loads at the same time and pattern control for controlling a combined load, and performing communication between the network and the host system. Provided with another communication means and protocol conversion means for
Since the device is interposed between the communication line of the network and the host system, and the communication between the host system and the central processing unit of each multiplex transmission system is performed via the I / F device, the central processing of the multiplex transmission system is performed. Only by transmitting and receiving commands between the device and the host system by communication, monitoring and control of the multiplex transmission system can be performed by the host system, so that a very simple and reliable interface between the multiplex transmission system and the host system is achieved. In addition to this, there is an effect that a plurality of multiplex transmission systems can be monitored and controlled by a host system through one I / F device. In addition, many
Commands for pattern control given to the
Indicates the management points of the multiplex transmission system to be controlled and the control contents
The control point is composed of the control mode and the command
Central processing unit corresponding to the combination of
Pattern number that specifies the pattern control set for the device
And the combination of management point and control mode
The relationship between the pattern number and the pattern number to be converted
The means that have been memorized are provided in the central processing unit or the I / F unit.
The load of each multiplex transmission system is controlled by a command from the host system.
When performing pattern control on
Updating the management point data assigned to each central processing unit
This control point and pattern control held by the position system
Control mode indicating the contents of
Control from the multiplex transmission system
Data managed by the host system in response to pattern control.
Data only needs to be a management point,
This has the effect of reducing the amount of data to be processed.

According to a third aspect of the present invention, in the I / F device, there is provided means for storing data of interlocking control relating to interlocking of each multiplex transmission system, and other multiplex transmission systems are interlocked with the operation of the monitoring terminal. The information necessary for the interlocking control for controlling the control terminal provided in the device is handled based on the interlocking control data stored when the information is transmitted from the central processing unit via the communication line. The control information is supplied to the central processing unit of the multiplex transmission system via the communication line, and the central processing unit of the multiplex transmission system to which the control information is given creates control data for the load. With this monitoring information, it is possible to easily control the control terminal of another multiplex transmission system through the I / F device, and to easily construct a large-scale remote monitoring and control system.

[0041]

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a basic example of the present invention.

FIG. 2 is a block diagram of the central processing unit according to the first embodiment;

FIG. 3 is a flowchart for explaining the operation of the above.

FIG. 4 is a diagram showing another example of a system configuration using the above.

FIG. 5 is an overall configuration diagram of another example serving as a basis of the present invention.

FIG. 6 is a block diagram of a central processing unit and an I / F device according to the first embodiment;

FIG. 7 is a flowchart for explaining the above operation.

FIG. 8 is a block diagram of a central processing unit and an I / F device according to the first embodiment;

FIG. 9 is an explanatory diagram of an allocation table of the above-described interlocking control.

FIG. 10 is an explanatory diagram of a data relation for explaining a command according to an embodiment of the present invention.

FIG. 11 is an overall configuration diagram of a conventional example.

FIG. 12 shows a multiplex transmission signal V used in a multiplex transmission system.
FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Central processing unit 2 Monitoring terminal 3 Control terminal 4 Transmission line 5 Load 6 Operation switch 7 Host system 8 Communication line

Claims (3)

(57) [Claims] 1. A central processing unit is connected to a plurality of monitoring terminals and control terminals via a pair of transmission lines, and a central processing unit transmits a multiplex transmission signal to access the terminal. The control terminal is provided with load control data based on the operation data of the operation switch connected to the corresponding monitoring terminal, and the operation data of the connected operation switch is multiplexed and transmitted to the monitoring terminal. In a remote monitoring and control system comprising a multiplex transmission system for returning to a central processing unit as monitoring data during a response waiting period provided for a signal, the central processing unit communicates with a host system via a communication line. Means and, based on the command sent from the host system, create the load control data,
A means for returning a load control result to a higher-level system, and a storage for storing data of a target load of a group control for simultaneously controlling a plurality of loads and a pattern control for controlling a combined load sent from the higher-level system. And a pattern given from the host system to the multiplex transmission system.
Management of multiplex transmission systems that target control commands
Points and a control mode indicating the control content.
Combination of control point and control mode of the obtained command
Pattern set in the corresponding central processing unit
Means for converting control to a pattern number to specify
Combination of point and control mode and pattern number to be converted
Means for rewritably storing the relationship with the
A remote monitoring control system provided in a device. 2. A central processing unit is connected to a plurality of monitoring terminals and control terminals via a pair of transmission lines, and a central processing unit transmits a multiplex transmission signal to access the terminals. The control terminal is provided with load control data based on the operation data of the operation switch connected to the corresponding monitoring terminal, and the operation data of the connected operation switch is multiplexed and transmitted to the monitoring terminal. In a remote monitoring and control system comprising a multiplex transmission system for returning to a central processing unit as monitoring data during a response waiting period provided for a signal, a central processing unit of a plurality of multiplex transmission systems is connected to each other via a communication line to form a network. At the same time, the central processing unit of each multiplex transmission system has communication means for communicating with the host system via a communication line, and the above-mentioned negative processing based on a command sent from the host system. As well as create a control data,
A means for returning a load control result to a higher-level system, and a storage for storing data of a target load of a group control for simultaneously controlling a plurality of loads and a pattern control for controlling a combined load sent from the higher-level system. Means, and an I / F device provided with another communication means for communicating between the network and the host system and a protocol conversion means is interposed between the communication line of the network and the host system. Communication between the host system and the central processing unit of each multiplex transmission system via the I / F device, and
Control of the pattern given from the host system to the multiplex transmission system.
Command for the target multiplex transmission system
And a control mode indicating the control content.
Combination of command management point and control mode
The pattern control set in the corresponding central processing unit.
Means for converting to the specified pattern number and management point
And the combination of the control mode and the pattern number to be converted
A means for storing the relationship in a rewritable manner and a central processing unit
A remote monitoring control system provided in the I / F device . 3. The I / F device includes means for storing interlocking control data relating to interlocking of each multiplex transmission system, and is provided in another multiplex transmission system in conjunction with operation of the monitoring terminal. Based on the data of the interlocking control stored when the information necessary for the interlocking control for controlling the control terminal is transmitted from the central processing unit via the communication line, the central control unit of the corresponding multiplex transmission system is used. Providing control information to the processing device via a communication line,
3. The remote monitoring control system according to claim 2, wherein the central processing unit of the multiplex transmission system to which the control information is given creates control data for the load.