JPH0946775A - Setting terminal used in remote supervisory and controlling system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve reliability for set data and to provide high operability. SOLUTION: In this terminal 4 for setting used in a remote supervisory and controlling system using a transmission unit 1 of time division multiplex transmission system, a read-only command sending means to set the transmission unit 1 in a read-only state is provided. Also, in the terminal for setting used in the remote supervisory and controlling system using the transmission unit of time division multiplex system, the transmission unit is set in the read-only state by the read-only command for a time when a set content stored in the inside of the transmission unit 1 is read out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a transmission unit and a terminal device with a pair of signal lines, and transmits monitoring data and control data through the signal lines in a time division multiplex manner to various kinds of lighting loads. The present invention relates to a setting terminal used in a remote monitoring control system for remotely controlling a load.

[0002]

2. Description of the Related Art Conventionally, in a remote monitoring control system in which a terminal is accessed from a transmission unit and data is time-division multiplexed, as shown in FIG. 4, the entire remote monitoring control system is controlled. The transmission unit 1, the plurality of monitoring terminals 2 having unique addresses, the plurality of controlling terminals 3 having unique addresses, and the setting terminal 4 having unique addresses are paired. is connected in by the signal line 5, and accessing each terminal unit from the transmission unit 1, switch S _1, ... monitoring data and the lighting load L ₁ of S _4, ... to time division multiplex transmitting control data of L ₄ . Further, the setting terminal device 4 is used when performing pattern setting, group setting, or the like of the lighting loads L _1, ... L ₄ connected to the respective control terminal devices 3.

Here, as shown in FIG. 5, the transmission signal V _S transmitted from the transmission unit 1 to the signal line 5 includes a start pulse signal ST indicating the start of signal transmission and a mode data signal MD indicating the signal mode. , An address data signal AD for transmitting 8-bit address data for calling the terminals 2, 3, ₄ ; a control data signal CD for transmitting control data for controlling the lighting loads L _1, ... L ₄ ; and a checksum data signal. A multi-polarity (± 2) including CS and a reply standby signal WT for setting a reply period of reply data from the terminals 2, 3 and 4
4V) time division multiplex transmission signal for transmitting data by pulse width modulation.

[0004] Each terminal unit 2, 3 and 4, when the unique address data of the address data and the self-transmission signals V _S which is received via the signal line 5 is matched, the control data of the transmission signal V _S At the same time as capturing, the monitoring data is returned as a current mode signal (a signal short-circuited between the signal lines 5 via an appropriate low impedance) in synchronization with the return standby signal WT of the transmission signal V _S.

Further, when the transmission unit 1 receives the interrupt signal returned from any of the monitoring terminal 2 or the setting terminal 4, the transmission unit 1 detects the interrupt generating terminals 2 and 4 to detect the interrupt. , 4 are accessed and the monitoring data is returned. Further, the transmission unit 1 controls the corresponding lighting loads L _1, ... L ₄ based on the monitoring data returned from the monitoring terminal 2 or the setting terminal 4 as described above. The control data to be transmitted to the control terminal 3 is created, and the control data is time-division-multiplexed to the corresponding control terminal device 3 via the signal line 5 to perform lighting load L _1, ...
Control L ₄ .

[0006] Control terminal unit 3 includes a power supply circuit for forming a circuit power from the transmission signal V _S to be transmitted via the signal line 5 (not shown), performs signal processing to receive a transmission signal V _S A signal processing circuit (not shown) for forming and returning a reply signal together with it, an address setting unit (not shown) for setting a unique address, and a control circuit of four circuits when controlling one lighting load L A circuit number setting unit (not shown) for setting which circuit in FIG. 4 controls the lighting load L, and a drive circuit (not shown) for driving a relay circuit (not shown) for controlling the lighting load, It is formed by a monitoring circuit (not shown) that monitors the operating state. The signal processing circuit detects a match between the address data of the transmission signal V _S and the unique address, takes in the control data when the address match is detected, and forms a control output based on the bit selected by the circuit number setting unit. While driving the relay circuit, response monitoring data is formed based on the illumination load monitoring input that is input via the monitoring circuit, and is returned to the transmission unit 1 as a current mode response signal.

The monitoring terminal 2 includes switches S _1, ... S ₄ as individual control switches or pattern control switches.
The state is monitored by a monitoring circuit (not shown), monitoring data based on the switch monitoring input is formed by a signal processing circuit (not shown), and is transmitted to the transmission unit 1 through the interrupt signal described above. Reply. Also, the monitoring terminal 2 is
Based on the control data (indicating the operation state of the lighting load) transmitted from the transmission unit 1, the operation display circuit (not shown) displays the on-display red light-emitting diode 2 _R and the off-display green light-emitting diode 2 _G. Turn on either one.

The unique address can be set by a DIP switch (not shown) of the address setting unit (not shown) of the monitoring terminal 2 by appropriately setting the lower 6 bits of the 8-bit address data on the user side. The upper 2 bits are set for the terminal type (for monitoring and control) to be set by the manufacturer, and the user setting part of the unique address of the monitoring terminal 2 and the control terminal 3 is set to the same value. The monitoring terminal device 2 and the control terminal device 3 can be easily made to correspond to each other by simply doing the above, and the control terminal device is based on the switch monitoring data returned from the monitoring terminal device 2 set to the same value. Bowl 3
The lighting load L connected to is controlled.

The setting terminal 4 not only transfers the setting contents of the pattern or group control data input from a large number of switches formed as the data input section to the transmission unit 1, but also transmits the setting contents. It is also possible to read from 1 and confirm. That is, for example, when performing pattern or group setting, the mode changeover switch SW _{1 is changed over} to pattern / group setting, and the pattern switch SW ₂ is pressed to enter the pattern setting mode. Next, address selection switch _{SW a, SW a ', SW} b, SW b', SW c, select the pattern number to be set SW _{c ',} independently selected the type of pattern control switch SW _1a to SW _1d, ... … _, SW _16a ~ SW
_16d , all-on switch SW ₃₀ , all-off switch SW ₃₁ , and all-area outside switch SW ₃₂ are set according to the purpose.

The setting data set as described above is
By returning the mode switch SW ₁ to the normal state, the data is temporarily stored in the data storage unit (not shown) in the setting terminal 4. The group setting can be carried out by to operate the group switch SW ₃ in place of the pattern switch SW _2, in this case, all-on switch SW ₃₀ is as an all grouping switch, all areas outside the switch SW ₃₂ is Each functions as an all exclusion switch.

Now, in the setting terminal 4 as described above
Pattern once stored in the data storage unit (not shown) of
The setting data or group setting data is as follows.
It is transferred to the transmission unit 1 by performing an operation. You
That is, first, the mode switch SW₁The pattern
・ Switch to group setting. And the pattern guru
Reset switch to transfer all settings for loop control.
Switch_FourOperate. Also, patterns or groups
When transferring the setting data in units, use the pattern switch
SW₂Or group switch SW_ThreeAfter operating the
Indicator switch SW _FiveOperate.

Determine the setting data to be transferred as described above.
After setting, data transfer switch SW ₆For example, 3 seconds or more
When pressed, the transmission signal transmitter / receiver of the setting terminal 4 (not shown)
)), The setting data decided to be transferred,
It is sent to the transmission unit 1 via the signal line 5. Soshi
Then, the transmission unit 1 sends out the setting terminal device 4.
The setting data is received and the received setting data is set.
Data in a memory for storing data.

On the other hand, when confirming or changing the setting data for the pattern control or the group control set in the memory for storing the setting data in the transmission unit 1, first, the mode changeover switch SW _{1 is set} to the pattern. After switching to the group setting, the data to be taken in is determined by the same method as in the above-mentioned transfer, and the data transfer switch SW ₆ is pressed for, for example, 3 seconds or more to store it in the memory for setting data of the transmission unit 1. The setting request data for transmitting the set data transmitted from the setting terminal device 4, and then the setting data transmitted from the transmission unit 1 is sent to the transmission signal transmitting / receiving unit (not shown) of the setting terminal device 4. Then, the transmitted setting data is stored in a data storage unit (not shown) in the setting terminal device 4.

[0014]

However, the conventional
In the setting terminal 4 used in the remote monitoring and control system
Is set in the memory for storing the setting data in the transmission unit 1.
Setting data for specified pattern control and group control
For storing the setting data of the transmission unit 1 to confirm
Pattern or group system stored in memory
A terminal for setting the transmission request signal that requests the setting data
4 to the transmission unit 1 and the transmission request
Based on the signal, the transmission unit 1 sends out the transmission unit.
The memory set in the memory for setting data in
Receives turn control and group control setting data
The data storage unit in the setting terminal 4 for receiving the setting data to be received.
System side monitoring while storing in (not shown)
Switch S of terminal 2_1,... S _FourWhen operated, transmission
The unit 1 erroneously recognizes the request from the setting terminal 4.
Then, based on the erroneous recognition, the setting in the transmission unit 1 is performed.
The pattern control set in the memory for data storage and
Since the setting data for group control is sent, the setting terminal
The data received by the device 4 will also be incorrect and
Under the wrong recognition, the
There was a problem that it might be set.

The present invention has been made to solve the above problems, and an object of the present invention is to make a switch on the system side while requesting setting data and receiving the setting data. Another object of the present invention is to provide a highly reliable and easy-to-use setting terminal device for use in a remote monitoring and control system that can receive correct setting data even when operated.

[0016]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a remote monitoring control system using a time division multiplex transmission unit in a first aspect of the invention. In the terminal for use, a read-only command sending means for putting the transmission unit into a read-only state is provided.

According to another aspect of the present invention, in the setting terminal used in the remote monitoring control system using the transmission unit of the time division multiplex transmission system, the setting contents stored inside the transmission unit are read out. During this period, the transmission unit is set in a read-only state by a read-only command.

According to another aspect of the present invention, in a setting terminal used in a remote monitoring control system using a transmission unit of a time division multiplex transmission system, a pattern or a group stored in the transmission unit is used. It is characterized in that the transmission unit is set to a read-only state by a read-only command while the setting contents are read.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a setting terminal used in a remote monitoring control system according to the present invention will be described below with reference to FIGS.
This will be described in detail with reference to FIG.

[First Embodiment] FIG. 1 is a timing chart showing a main part of a data transfer relationship when a setting terminal used in a remote monitoring control system obtains setting data from a transmission unit, and FIG. 2 is a remote monitoring. FIG. 3 is a flowchart showing the main part of the operation of the setting terminal used in the control system, and FIG. 3 is a block diagram showing the setting terminal used in the remote monitoring control system. It should be noted that the description of the conventional technique has been omitted in FIGS. 4 and 5, and the description thereof is omitted here.

As shown in FIG. 3, the setting terminal 4 includes a first control circuit section (hereinafter referred to as CPU1), a second control circuit section (hereinafter referred to as CPU2), a first storage section 40, and Second
A storage unit 41, a third storage unit 42, a fourth storage unit 43,
The operation / display unit 44, the operation detection / display control unit 45, the print output control unit 46, the timer circuit unit 47, the transmission signal transmitting / receiving unit 48, and the power supply circuit unit 49 are provided.

The CPU 1 operates based on a program stored in the first storage unit 40, and controls the entire setting terminal device 4. The CPU 2 controls the transmission signal transmitting / receiving unit 48. The first storage unit 40 is a unit that stores data received by the CPU 1 from the operation unit of the operation / display unit 44 via the operation detection / display control unit 45, and is configured by an E ² PROM. The second storage unit 41 is a storage unit capable of writing and reading data from the CPU 1 at any time, and the SRA
It is composed of M. The third storage unit 42 includes the CPU 1 and the CP.
A storage unit for exchanging data with U2,
It is composed of dual port RAM. Fourth storage unit 43
Is a storage unit capable of writing and reading data from the CPU 2 at any time, and is composed of SRAM.

The operation / display section 44 displays various operation switches for operating the setting terminal 4 and the operation states of these various operation switches, or the transmission signal transmission / reception section 48 via the signal line 5. And various display units for displaying data contents received from the transmission unit 1. The operation detection / display control unit 45 has both an interface for detecting the state of the operation switch of the operated operation unit and passing it to the CPU 1 and an interface for passing the display data from the CPU 1 to the display unit.

The print output control unit 46 is an interface for passing the printer signal output by the CPU 1 to a printer (not shown). The timer circuit unit 47 keeps a current time for schedule control and is composed of a timer IC. The transmission signal transmitting / receiving unit 48 uses the CP
It is a part that transmits and receives a transmission signal V _S including various data to and from the transmission unit 1 via the signal line 5 while being controlled by U2. The power supply circuit section 49 is a commercial power supply (AC1
00V) is step-down rectified to supply power to the entire setting terminal device 4.

The setting terminal 4 used in the remote monitoring and control system configured as described above instructs the CPU 2 to transmit the transmission signal from the transmission signal transmitting / receiving section 48 to the transmission unit 1 so that the transmission unit 1 is in the read-only state. for,
A read-only command sending instruction program corresponding to read-only command sending means for sending a read-only command that is a predetermined command is stored in the first storage section 40.

Next, referring to FIG. 1, for the pattern control and the group control set in the setting data storage memory in the transmission unit 1 from the setting terminal 4 via the signal line 5. The operation when confirming the setting data will be described. First, the operator operates the operation / display unit 4 of the setting terminal 4.
By operating 4 of the setting data stored in the memory for storing the setting data of the transmission unit 1,
For example, an instruction to read only the setting data related to the pattern control is issued via the operation detection / display control unit 45 by C
It is given to PU1 (STEP.1).

Then, the CPU 1 reads, from the first storage section 40, instruction data for transmitting a read-only command, which is a predetermined command for instructing the transmission unit 1 to be in the read-only state. Third
Write to the storage unit 42 (STEP.2). Then, the CPU 2
The instruction data for sending the read-only command is read from the first storage unit 40, and the read-only command is sent from the transmission signal transmitting / receiving unit 48 based on the read instruction data (STEP.3). Then, the transmission unit 1 that has received the read-only command sent from the transmission signal transmitting / receiving unit 48 is switched to the read-only state.

After that, the CPU 1 gives the instruction data for requesting the setting data of the pattern number 1 to the transmission unit 1 to the CPU 2 via the third storage unit 42 (STE).
P.4). The CPU 2 requests the transmission unit 1 via the signal line 5 for the setting data of the pattern number 1 set in the memory for storing the setting data in the transmission unit 1 from the transmission signal transmitting / receiving unit 48 (STEP .Five). The transmission unit 1 sequentially sends the setting data of the pattern number 1 set in the setting data storage memory to the setting terminal device 4 via the signal line 5 (STEP.6).

The setting data of the pattern number 1 transmitted by the transmission unit 1 is sequentially received by the transmission signal transmitting / receiving unit 48 of the setting terminal device 4 via the signal line 5, and CP
The data is sequentially transferred from U2 to the CPU 1 via the third storage unit 42 (STEP.7). Then, the CPU 1 stores the transferred setting data of the pattern number 1 in the second storage unit 41 and displays it on the display unit of the operation / display unit 44 via the operation detection / display control unit 45. After that, CPU1
Reads the setting data of pattern numbers 2, ..., N by the same operation as described above, sequentially stores them in the second storage section 41, and sequentially displays them on the display section of the operation / display section 44.

Here, the CPU 2 causes the transmission signal transmitter / receiver 48 to send out a transmission request signal for transmitting the setting data for pattern control stored in the memory for storing the setting data of the transmission unit 1, and the pattern number 1 , ... While sequentially requesting the setting data of the nth and acquiring the setting data in sequence, the switches S _1, ... S ₄ of the monitoring terminal 2 on the system side are operated, and the monitoring terminal 2 of the monitoring terminal 2 is operated. Even if the interrupt signal to be transmitted is transmitted to the transmission unit 1 via the signal line 5, the transmission unit 1 that has switched to the read-only state does not react to this interrupt signal.

When the CPU 1 finishes reading the setting data of all desired pattern numbers, the CPU 1 sends the instruction data to the CPU 2 via the third storage section 42 to the effect that the transmission unit 1 is returned to the normal state. give. Then, the CPU 2 sends a command for requesting a return to the normal state to the transmission unit 1. The same applies when checking the group control setting data. In addition, if the main part of the operation of the setting terminal 4 in the timing chart shown in FIG. 1 is made into a flow chart, it can be expressed as a flow chart as shown in FIG.

That is, in the setting terminal device 4 as described above, for the pattern control and group control set in the memory for setting data storage in the transmission unit 1 via the signal line 5. When reading the setting data from the transmission unit 1, a read-only command can be sent to the transmission unit to switch the transmission unit 1 to the read-only state, and the switch S of the monitoring terminal 2 on the system side can be switched.
_{Even if 1,} ... S ₄ is operated and the monitoring terminal 2 on the system side sends an interrupt signal to the transmission unit 1, the transmission unit 1 switched to the read-only state does not react to the interrupt signal. , The request from the setting terminal 4 cannot be mistakenly recognized, and is always set in the memory for setting data storage in the transmission unit 1 under correct recognition based on the request from the setting terminal 4. Since the setting data for pattern control or group control is transmitted, the data received by the transmission signal transmitting / receiving unit 48 of the setting terminal device 4 is also correct data, and the operator is always correct under correct recognition. Can be set.

[0033]

According to the first aspect of the present invention, correct setting data can be received even if the switch on the system side is operated while requesting the setting data and reading the setting data. Therefore, it is possible to provide a setting terminal device for use in a remote monitoring and control system that is highly reliable and easy to use.

According to the second aspect of the present invention, while the setting data is being requested and the setting data is being read, the transmission unit is set to the read-only state, so that the switch on the system side is operated. Even so, it is possible to provide a setting terminal which can receive correct setting data, is highly reliable and is easy to use, and which is used in a remote monitoring control system.

According to the third aspect of the present invention, the transmission unit is set to the read-only state while requesting the setting data of the pattern or group and reading the setting data. Even if the switch is operated, correct setting data can be received, and it is possible to provide a highly reliable and easy-to-use setting terminal for use in a remote monitoring control system.

[Brief description of drawings]

FIG. 1 is a timing chart showing a main part of a data transfer relationship when a setting terminal used in a remote monitoring control system according to an embodiment of the present invention obtains setting data from a transmission unit.

FIG. 2 is a flowchart showing a main part of an operation of a setting terminal used in the remote monitoring control system.

FIG. 3 is a block diagram showing a setting terminal used in the remote monitoring control system.

FIG. 4 is a system diagram showing a remote monitoring control system.

FIG. 5 is an explanatory diagram showing transmission signals used in the remote monitoring control system.

[Explanation of symbols]

 1 Transmission Unit 4 Terminal for Setting 40 Read-Only Command Sending Means

Claims (3)

[Claims] 1. A setting terminal used in a remote monitoring and control system using a transmission unit of a time division multiplex transmission system, for setting the transmission unit in a read-only state,
A setting terminal used in a remote monitoring and control system, which is provided with a read-only command sending means. 2. In a setting terminal used in a remote monitoring and control system using a transmission unit of a time division multiplex transmission system, the transmission unit is read by a read-only command while reading the setting contents stored in the transmission unit. A setting terminal used in a remote monitoring and control system, which is set in a read-only state. 3. A read-only command in a setting terminal used in a remote monitoring and control system using a transmission unit of a time division multiplex transmission system, while reading the setting contents of a pattern or a group stored inside the transmission unit. A setting terminal used in a remote monitoring and control system, which sets a transmission unit to a read-only state by means of.