JPH0314279B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a remote control and monitoring system using a time division multiplex transmission method.

[Background technology]

An example of the configuration of a remote control and monitoring system using a conventional time division multiplex transmission method is shown in FIG. In such a system, a plurality of monitoring input terminals 1 and load control terminals 2 are connected to a main operating section 4 through transmission lines 3. Each of the terminal devices 1 and 2 has a unique terminal address, and when the address data included in the transmission signal from the main operation section 4 and the terminal address of the own station match, the terminal device 2 for load control becomes the main operation. outputs a control output according to the control data of section 4;
In addition, the monitoring input terminal 1 has input switches 5a to 5.
The main operation unit 4 uses the monitoring input from c, etc. as a monitoring signal.
Send it back to Reference numerals 5a to 5c are input switches for setting monitoring inputs to be sent back to the main operation section 4. Moreover, 6a, 6d, etc. are relay contacts operated by the control output of the load control terminal device 2. When the relay contacts 6a, 6d, etc. are turned on, the loads 7a, 7d, etc. are driven by the commercial power source 8.

Now, the operation when controlling the load control terminal 2 by input from the monitoring input terminal 1 will be explained as follows. First, the main operation unit 4 accesses the monitoring input terminal 1. That is, the address data included in the transmission signal is matched with the unique terminal address of the monitoring input terminal 1. At this time, the input switch 5a is input from the monitoring input terminal 1.
A monitoring signal indicating that is on is sent back. When the main operation section 4 receives the above-mentioned monitoring signal, it finds out the address of the load control terminal 2 corresponding to the input switch 5a using a processing program registered in the main operation section 4 in advance, and then Create control data for the terminal device 2 and access the load control terminal device 2. Load control terminal 2 accessed by a transmission signal from main operation unit 4
turns on the relay contact 6a according to the control data, and turns on the load 7a corresponding to the input switch 5a. At this time, the load 7, which is controlled on and off in response to the operation of the input switches 5a and 5b, is 1
It does not matter if there is not only one, but more than one. The main operation unit 4 generally accesses each terminal 1 and 2 by cyclically accessing all the terminals 1 and 2 in sequence, but when an interrupt from a certain monitoring input terminal 1 A method may be used in which monitoring terminals 1 within a specific address range are accessed centrally in response to a signal.

By the way, in such a system, the correspondence relationship between the terminal address of each monitoring input terminal 1 and the terminal address of the load control terminal 2 to be controlled in accordance with the monitoring signal from the monitoring input terminal 1 is stored. By changing the storage contents of the control area storage section 4a in the main operation section 4, the load control terminals 2 that can be controlled by each monitoring input terminal 1 can be changed. It is now possible to change the address range. Normally, the input switch 5 of the monitoring input terminal 1 is mounted on a wall as a wall switch, for example, and the load 7 corresponding to this input switch 5 is assigned, for example, as a lighting load in the same room as the wall switch. . However, whether or not the correspondence between the monitoring input terminal 1 and the load control terminal 2 is appropriate cannot be determined without visiting the site where the terminals 1 and 2 are installed. In many cases, even if you set the control area storage section 4a on the main operation section 4, when you try to operate it on site, you may find that the correspondence is not very good. There was a problem in that it was necessary to return to the installed location and reconfigure the control area storage section 4a.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned points, and it is possible to check the correspondence between the load and the input switch at the location where the load control terminal device and the monitoring input terminal device are installed. It is an object of the present invention to provide a remote control monitoring system that allows setting of a control area storage section in a main operation section.

[Disclosure of the invention]

The configuration of the present invention will be described below with reference to illustrated embodiments. FIG. 2 is a block circuit diagram showing a schematic configuration of the monitoring input terminal 1 used in the present invention.
The terminal circuit section 9 connected to the transmission line 3 is one chip.
It is made of LSI, and the same one is also used for the load control terminal 2. This terminal circuit section 9 is the transmission line 3
When the address data sent from the main operation unit 4 via the terminal matches the terminal address of the own station,
It has a function of reading and outputting the control data following the address data, and returning a monitoring signal according to the monitoring input during the return waiting period after the end of the control data transmission period. Therefore, when calling one terminal circuit section 9 to perform control monitoring on the side of the main operation section 4, a start signal, an address data signal, a control data signal, and a return standby signal are sequentially sent out in a time-sharing manner. There is a need to. In FIG. 2, reference numeral 10 denotes a unique address setting switch, which sets the unique address of the monitoring input terminal 9. In FIG. Further, 11 is a data setting switch, which sets the terminal address of the load control terminal 2 to be controlled by the monitoring input terminal 1,
A start code that supports the start of the update operation of the storage contents in the control area storage section 4a, an end code that supports the completion of the update operation, etc. are set. This data setting switch 11
Either one of the output of the input switch 5 and the output of the input switch 5 is connected to a monitoring input of the terminal circuit section 9 via a switching circuit 12. The changeover switch 13 is for switching the changeover circuit 12, and when the changeover switch 13 is on, the setting data of the data setting switch 11 is inputted to the terminal circuit section 9 as a monitoring input, and when the changeover switch 13 is off, it is inputted. The setting data of the switch 5 is input to the terminal circuit section 9 as a monitoring input. 1
Reference numeral 4 denotes an access indicator light, which lights up while the monitoring input terminal 1 is being accessed by the main operation section 4.

Here, the data setting switch 11 can set, for example, 8-bit digital data, and the address of the load control terminal 2 (usually 8 bits) can be set.
bits or less) can be set with a single switch operation. The number of bits of the monitoring signal sent back from the terminal circuit section 9 to the main operation section 4 is set to be greater than or equal to the number of bits of the setting data in the data setting switch 11. For example, it is preferable to use a structure in which the number of bits of the monitoring signal is 9 bits, of which 1 bit is a parity bit. On the other hand, the number of input switches 5 is usually about two to four, so compared to the 8-bit data set by the data setting switch 11, several bits are left over. Data 0 is returned for the remaining bits. With this configuration, when a special code in which each bit is all 1 (for example, a start code or an end code) is sent back to the main operation section 4, the main operation section 4 will receive the code from the input switch 5. It is possible to identify that it is not the output but the output from the data setting switch 11.

Next, FIG. 3 is a flowchart showing the operation when changing the control area by this system. As shown in the figure, when updating the storage contents of the control area storage section 4a in the main operation section 4, first turn on the changeover switch 13 and then turn on the data setting switch 11.
The output of the terminal circuit section 9 is connected to the monitoring input of the terminal circuit section 9. In this state, a start code (for example, 8-bit data in which each bit is all 1) is set using the data setting switch 11. In this state,
Check that the access indicator light 14 is lit. The access indicator light 14 lights up when the monitoring input terminal 1 is accessed and the data set by the data setting switch 11 is sent back to the transmission line 3 to prompt the input of the next data. After confirming that the access indicator light 14 is lit, the person operating the monitoring input terminal 1 selects the data setting switch to set the terminal address of the load control terminal 2 to be controlled by the monitoring input terminal 1. 11. While waiting in this state, the main operating section 4 accesses the monitoring input terminal 1 again, and the terminal address set by the data setting switch 11 is sent back to the main operating section 4. Thereafter, similar operations are repeated, and the terminal addresses of the load control terminals 2 to be controlled by the monitoring input terminal 1 are successively returned to the main operation section 4. When the return of the predetermined terminal address is completed, an end code is set by the data setting switch 11, and after confirming that the access indicator light 14 is lit, the changeover switch 13 is turned off. In addition, the main operation section 4
From the time when the main operation unit 4 receives the start code until the end code is received, the access interval of the monitoring input terminal 1 by the main operation unit 4 is set to an interval that allows enough time to operate the data setting switch 11. It is something to keep. The main operation unit 4 may monitor and control the other terminals 1 and 2 during this access standby time.

FIG. 4 is a flowchart showing the operation of the main operating section 4 when the main operating section 4 receives a start code from the monitoring input terminal 1. The main operation unit 4 always accesses each monitoring input terminal 1 and each load control terminal 2 in the order of the terminal address, and if the reply data from the monitoring input terminal 1 is a start code, , the normal processing flow is changed to a processing flow for changing the control area. When the start code is received, the terminal address data of the load control terminal 2 to be controlled is received by the monitoring input terminal 1 until the end code is received, and this data is transferred to the control area. The information is sequentially stored in the memory area corresponding to the unique address of the monitoring input terminal 1 in the storage section 4a. Note that the main operating section 4 does not necessarily need to be configured to access each monitoring input terminal 1 cyclically at all times, and the main operating section 4 can be accessed from the monitoring input terminal 1 by operating the changeover switch 13 or the like. then sends an interrupt request signal containing the terminal address information of the monitoring input terminal 1, and then
The monitoring input terminal 1 may be accessed through the interrupt processing flow.

After completing the control area changing operation in this way, when the input switch 5 of the monitoring input terminal 1 whose control area was changed is operated, the newly assigned monitor input terminal 1 is The load 7 of the load control terminal 2 is operated. Note that if there are multiple input switches 5 and loads 7 for each terminal device 1, 2, the assignment may be such that, for example, the first to nth input switches 5 correspond to the first to nth loads 7, respectively. It is something to keep in mind.

FIG. 5 shows an embodiment of the merged invention. In the block circuit diagram of FIG. 5, reference numeral 15 is a data memory in which data set by the data setting switch 11 is written into a plurality of different memory addresses via an input register 16. Reference numeral 17 denotes an output register that temporarily stores data read from the data memory 15 and supplies it to the display section 18 and the switching circuit 12. Furthermore, 19 is a memory address control section, which inputs a different memory address to the data memory 15 together with a data read signal every time it receives an access signal from the terminal circuit section 9 when the changeover switch 13 is turned on, and inputs a different memory address to the data memory 15 together with a data read signal, so that the data can be read. A plurality of pieces of data stored in the memory 15 are sequentially read out one by one each time the monitoring input terminal 1 is accessed. Here, the plural pieces of data stored in the data memory 15 are controlled by the start code and its monitoring input terminal 1, as in the embodiments shown in FIGS. 2 to 4 above. It consists of each terminal address of the load control terminal 2 to be loaded and an end code. Such data is sequentially stored in different memory addresses of the data memory 15 by the data setting switch 11. For example, the start code is stored as 8-bit data at address 0 of the data memory 15, and a plurality of terminal addresses (for example, n) are stored as 8-bit data at addresses 1 to n of the data memory 15, respectively. Finally, write the end code to address (n+1) of data memory 15.
Store it in the bit as data. If each data is stored in the order of the memory address from the first address of the data memory 15 in this way, when reading the data, first reset the address counter provided in the memory address control section 19 when the changeover switch 13 is turned on, Thereafter, data can be easily read by incrementing the address counter each time an access signal is input. However, in the case of the monitoring input terminal 1 shown in FIG. 5, a data memory 15 stores a plurality of setting data of the data setting switch 11.
is provided, so when the main operation unit 4 receives the start code from the monitoring input terminal 1,
From then on, it is possible to access the monitoring input terminal 1 continuously until the end code is received. Therefore, the main operation unit 4 accesses the monitoring input terminal 1 only during the time when the data setting switch 11 is operated. There is no need to wait for access, and configuration data transmission can be completed at high speed.
In addition, in the embodiment shown in FIG.
is connected to the data output side of the output register 17, so that the setting data for each memory address stored in the data memory 15 can be displayed on the display section 18, and its contents can be known. . This display by the display section 18 is performed even when the changeover switch 13 is off, and the data set by the data setting switch 11 is displayed in the input register 16 and the output register 1.
7. In the embodiment shown in FIG.
An interrupt request signal containing the terminal address information of the monitoring input terminal 1 is sent from the monitoring input terminal 1 to the main operation section 4 by the operation of the main operation section 4, etc. The monitoring input terminal 1 may be accessed according to the processing flow, and in this way, the transmission speed of setting data can be further increased.

〔Effect of the invention〕

The present invention is configured as described above, and transmits a specific terminal address signal, a control data signal, and a return standby signal sequentially from the main operation section to the transmission line in a time-sharing manner, and controls the load with the control data signal following the address signal when the addresses match, and when the addresses match, the monitoring input terminal returns the input switch state as a monitoring signal to the transmission line during the return standby signal period, The main operation unit has a control area memory that stores the correspondence between the terminal address of each monitoring input terminal and the terminal address of the load control terminal to be controlled in accordance with the monitoring signal from the monitoring input terminal. In a remote control monitoring system having a main operation section, the monitoring input terminal has data that is distinguishable from the setting data of the input switch and that updates the storage contents of the control area storage section in the main operation section. It is equipped with a data setting switch for setting data, and a switching circuit for connecting either the output of the data setting switch or the output of the input switch to the monitoring input of the monitoring input terminal. A data setting switch is used to set the correspondence between the monitoring input terminal and the load control terminal at the site where each terminal is actually installed. The above correspondence relationship can be set while checking on site whether the correspondence relationship between the device and the load control terminal device is appropriate.
If the correspondence relationship is not appropriate, you can change it on the spot, and there is no need to go back to the location where the main control panel is installed and redo the settings, as in the past.
Therefore, work efficiency can be improved. Furthermore, in the present invention, the contents of the control area storage section of the main operation section are updated by returning the monitoring signal from the monitoring input terminal connected to the transmission line. This has the effect that there is no need to interrupt the operation of the remote control system even when the storage contents of the storage section are changed. In addition, in the case of a combined invention, there is provided a data memory that stores a plurality of setting data of a data setting switch in different memory addresses, and one of the output of this data memory and the output of an input switch for load control is monitored. When the switching circuit is connected to the monitoring input of the input terminal and the switching circuit is connected to the output side of the data memory, data is transferred from a different memory address of the data memory each time the monitoring input terminal is accessed. Since this device is equipped with a memory address control unit that outputs a Each time the input terminal is accessed, data can be sent back to the main operation unit one by one. Therefore, the time interval for accessing the monitoring input terminal from the main operation unit is determined by the data setting switch. There is no need to reserve just the time necessary to set the data, and the monitoring input terminal can be accessed continuously from the main operation panel, making it possible to transmit setting data at high speed. In addition, the worker who operates the data setting switch does not have to operate the data setting switch quickly until the next access is made from the main operation panel, so the data can be set accurately. It has the effect of being able to. As explained in the example of FIG.
It is advantageous if the monitoring input terminal device is provided with a display section that displays the contents of the data memory, since it is possible to confirm the contents of the setting data before transmitting the setting data to the main operation section. It is something.

[Brief explanation of the drawing]

Fig. 1 is a block circuit diagram of a general remote control monitoring system, Fig. 2 is a main block circuit diagram of an embodiment of the present invention, Fig. 3 is a flow chart for explaining the operation of the same, and Fig. 4 is a block circuit diagram of a general remote control monitoring system. FIG. 5 is a flowchart for explaining the operation of the main operating section same as above, and is a block circuit diagram of the main part of an embodiment of the merged invention. 1 is a monitoring input terminal, 2 is a load control terminal, 3 is a transmission line, 4 is a main operation section, 4a is a control area storage section, 5 is an input switch, 11 is a data setting switch, 12 is a switching circuit, 15 is a data memory, and 19 is a memory address control section.

Claims (1)

[Claims] 1. A main operation section and a plurality of terminal devices for load control and monitoring input, each of which is assigned a unique terminal address, are connected to each other via a transmission line, and An address signal representing a specific terminal address, a control data signal, and a return standby signal are sequentially transmitted to the transmission line in a time-division manner, and the load control terminal unit transmits the address signal on the transmission line and the terminal address of its own station. When a match occurs, the load is controlled using the control data signal following the address signal, and when the address signal on the transmission line matches the terminal address of the own station, the monitoring input terminal monitors the state of the input switch during the return standby signal period. It is sent back to the transmission line as a signal, and the main operation unit contains the terminal address of each monitoring input terminal and the terminal address of the load control terminal to be controlled in accordance with the monitoring signal from the monitoring input terminal. In a remote control monitoring system that is provided with a control area storage unit that stores correspondence relationships, the monitoring input terminal device contains data that is distinguishable from the setting data of the input switch and that is connected to the control area of the main operation unit. a data setting switch for setting data for updating the storage contents of the storage section; and a switching circuit for connecting either the output of the data setting switch or the output of the input switch to a monitoring input of a monitoring input terminal. A remote control monitoring system comprising: 2 Connect the main operation unit and multiple terminal devices for load control and monitoring input, each of which is assigned a unique terminal address, through a transmission line, and specify the transmission line from the main operation unit. An address signal representing the terminal address of the terminal, a control data signal, and a return standby signal are transmitted sequentially in a time-division manner, and when the address signal on the transmission line matches the terminal address of the own station, the load control terminal transmits the address signal to the address signal. The load is controlled by the subsequent control data signal, and when the address signal on the transmission line matches the terminal address of its own station, the monitoring input terminal returns the input switch status as a monitoring signal to the transmission line during the return standby signal period. The main operation unit has a control for storing the correspondence relationship between the terminal address of each monitoring input terminal and the terminal address of the load control terminal to be controlled in accordance with the monitoring signal from the monitoring input terminal. In a remote control monitoring system provided with an area storage section, the monitoring input terminal device contains data that is distinguishable from the setting data of the input switch and that stores the contents of the control area storage section in the main operation section. A data setting switch that sets the data to be updated, a data memory that stores a plurality of setting data of the data setting switch in different memory addresses, and monitors either the output of this data memory or the output of the input switch. When the switching circuit is connected to the monitoring input of the input terminal and the switching circuit is connected to the output side of the data memory, data is transferred from a different memory address of the data memory each time the monitoring input terminal is accessed. 1. A remote control monitoring system comprising: a memory address control unit that outputs a memory address control unit.