JPH02274088A - Terminal function setting method for remote supervisory control system - Google Patents

Abstract

PURPOSE:To easily set a terminal function even when a signal is not fed from a signal line to terminal equipment by feeding a function setting signal including function data through a connecting part, which is connected to the signal line in the terminal equipment, to the terminal equipment. CONSTITUTION:A storage part 13, which holds the function data to determine the function of terminal equipment 10, and a terminal processing part 12, which is operated based on the function data in the storage part 13, are provided to each terminal equipment 10, and the function setting signal including the function data is fed through the connecting part, which is connected to the signal line in the terminal equipment 10, to the terminal equipment 10. Consequently the function setting signal can be transmitted through the connecting part at the section of the signal line in the terminal equipment 10, and since the terminal setting signal is the one which can be fed to the terminal equipment 10, the function can be set as soon as the signal is fed to the terminal equipment only by feeding the function setting signal to the terminal equipment 10.

Description

[Detailed description of the invention] [Industrial application field]

The present invention provides a remote monitoring and control system in which data is transmitted between a central control unit and a plurality of terminal devices connected via a signal line, and power is supplied from the central control unit to the terminal units via the signal line. The present invention relates to a terminal function setting method.

[Conventional technology]

As shown in FIG. 6, this type of remote monitoring and control system includes a central control device 31, a plurality of monitoring terminals 32 to which unique addresses are set, a control terminal 33, a wireless relay terminal 34, The external interface terminal device 35 and the pattern setting terminal device 36 are connected to a pair of signal lines 1. The monitoring terminal 32 is connected to the monitoring terminal 32 with switches S, -S, such as wall switches. Transmission signal V sent from central control device 31 to signal line 18
As shown in FIG. 7(a), s is a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating the signal mode, and an address for transmitting 8-bit address data for calling each terminal 32 to 36. A data signal AD, a control data signal CD that transmits control data for controlling ~L, a checksum data signal C8, each terminal 3
This is a bipolar (±24V) time division multiplexed signal consisting of a signal return period WT that sets the return period from signals 2 to 36, and data is transmitted by pulse width modulation. Each terminal device 32~
36, when the address data of the transmission signal Vs received via the signal line and the set address data match, the control data of the transmission signal Vs is taken in, and the control data is synchronized with the signal return period WT of the transmission signal Vs. Then, the monitoring data signal is sent back as a current mode signal (a signal sent by short-circuiting the signal lines 18 via an appropriate low impedance). The central control device 31 also includes a dummy signal transmitting means that always sends out a dummy transmission signal with the mode data signal MD in a dummy mode, a monitoring terminal 32, a wireless relay terminal 34, an external interface terminal 35, a pattern FIG. 7(b) returned from any of the setting terminals 36
) When an interrupt signal Vi as shown in ) is received,
Interrupt processing means is provided for detecting the terminal device 32-36 that has generated an interrupt, accessing the terminal device 32-36, and causing the monitored data to be sent back. Central control device 3
1, the monitoring terminal 32 or the wireless relay terminal 34 or the external interface terminal 3 is connected as described above.
5. Corresponding load based on the monitoring data sent back from the pattern setting terminal 36 to the central control device 31, ~L
, and transmit the control data to the control terminal 33 that controls the signal line 1. The control terminal 33 is time-division multiplexed and loaded, and ~L4 is controlled. The wireless relay terminal 34 includes an optical wireless transmitter Y,
This is a terminal device that relays data in an optical wireless system consisting of an optical wireless receiver X and a wireless signal line.The optical wireless receiver Transfer the data to the wireless signal line 1. and transfers this data to the central control unit 31. Further, the external interface terminal device 35 is a terminal device that performs data transmission between the outside and the control device 37, and the pattern setting terminal device 3
Reference numeral 6 denotes a terminal device that transfers pattern control data inputted from the data input section 38 to the central control device 31. The monitoring terminal 32 and the control terminal 33 installed in the distribution board 40 or the relay control panel 41 are set to the dimensions agreed upon for the distribution type, and their control outputs are used to control the load control remote control. Relay (can also be turned on by hand switch)
Three latching relays that can be turned off are controlled. Each of the terminals 32 to 36 obtains power by rectifying and stabilizing the transmission signal that is constantly transmitted via the signal line 18. Incidentally, although the terminals 32 to 36 have different functions depending on the purpose of use, conventionally each terminal 32 to 36 was individually designed, but now there is a demand for common parts. It has been considered to use a dedicated processor equipped with various terminal functions and to determine the functions of the terminal by supplying function data from a storage section to this processor.

[Issues that the invention attempts to solve! I! ] According to the above configuration, a function setting device for writing function data into the storage section provided in the terminals 32 to 36 is required. The function setting signal containing function data transmitted from the function setting device to the terminal device is
Although it is a different signal from the transmission signal Vs sent and received with the central control device 31, the current situation is that it is input to the terminals 32 to 36 through a different route from the transmission signal VS. Therefore, when setting the functions of the terminals 32 to 36, connect the terminals 32 to 36 to the signal line 18,
The transmission signal Vs must be transmitted from the central control device 31, which causes inconvenience in setting the functions of the terminals 32 to 36. The present invention aims to solve the above-mentioned problems, and provides a terminal function for a remote monitoring and control system that allows the terminal function to be easily set even when the terminal is not supplied with power through a signal line. It attempts to provide a setting method. [Means for Solving the Problems] In order to achieve the above object, the present invention includes a storage section in each terminal device that holds function data that determines the function of the terminal device, and an operation based on the function data in the storage section. The device is configured such that a function setting signal including function data can be supplied to the terminal device through a connection portion to a signal line in the terminal device. Further, the terminal processing section is configured to send and receive the function setting signal to the terminal within a certain period of time after power supply to the terminal starts, and to send and receive the transmission signal to the terminal after the certain period of time has elapsed. Good too.

[Effect]

According to the above configuration, the function setting signal can be transmitted through the connection part with the signal line in the terminal device, and the function setting signal is a signal that can supply power to the terminal device, so the function setting signal can be simply given to the terminal device. , functions can be set at the same time as power is supplied to the terminal, and terminal functions can be easily set even when the terminal is not supplied with power from the signal line. Furthermore, the power supply means in the terminal device can be shared during function setting and control, and the terminals for transmitting and receiving signals can also be shared.

Embodiment 1 The terminal device 10 shown in FIG.
A transmitting/receiving unit 1 that transmits and receives a transmission signal VS transmitted via
1, a terminal processing section 12 that performs various processes in the terminal device 1o, and a storage section 13 that stores function data for setting the functions of the terminal processing section 12. Transmitter/receiver 1
1, the transmission signal Vs is rectified and stabilized to become a DC power supply,
Power is supplied to each part of the terminal device 10. Terminal 1 for function data
Address data for setting an address of 0 is also included. The terminal processing unit 12 is composed of a dedicated processor, and the E2FR
A switch as a monitoring input, a relay for load control, etc. are connected according to the function determined by the function data stored in the storage unit 13 made up of OM. Functions that can be set using function data include an input mode for monitoring input and an output mode for control output, allowing each load to operate on an off-delay basis or for a limited time. The terminal processing section 12 includes a transmission signal processing section 12a and a functional data processing section 12b.Transmission signals from the transmitting/receiving section 11 are processed by the transmission signal processing section 12a, and signals containing functional data are processed by the functional data processing section 12b. will be processed. Further, the outputs of the transmission signal processing section 12a and the functional data processing section 12b are inputted to the transmitting/receiving section 11 through the OR circuit 14. In the terminal processing unit 12, when the address data from the central control unit 31 is input, it is compared with the address data set in the storage unit 13, and if they match, it is added to the control data transmitted from the central control unit 31. The central control unit 1 controls the load based on the signal return period and synchronizes the monitoring data with the signal return period based on the monitoring input input to the terminal device 10.
1if31. Further, if the monitoring terminal device 32 is connected to the switch S, display lamps LD, LD2 are provided which blink according to whether the load connected to the corresponding control terminal device 33 is turned on or off. On the other hand, as shown in FIG. 2, the function setting device 2-0 has a transmitting/receiving section 21 that transmits signals including function data to and from the terminal device 10, and transmits and receives signals to and from the terminal device 1o. The functional data is processed by the data processing unit 22. The data processing unit 22 includes a data storage unit 23 that stores data, a keypad (or keyboard) 24 as an input unit, and a keypad 24 that serves as an input unit.
A display 25 is connected to display the functional data input from the terminal 1o and the functional data transmitted from the terminal 1o. When writing function data to the storage section 13 of the terminal device 10, the terminal device 10 is disconnected from the signal line 19, and the function setting device 20
is connected to the connection part with the signal line 1g in the terminal device 10. The signal including the function data is a bipolar (±24V) function setting signal Vt as shown in FIG. Confirmation signal return period B to confirm function data
It has a T. On the other hand, from the terminal device 10 to the function setting device 20
The signal sent back is a current mode (0-400 JIA) signal, as shown in FIG. 3(b), and includes a response signal AB and a confirmation signal BB. The setting signal SS includes data specifying the processing mode with the terminal device 10, and if it is the setting mode according to the mode, after writing to the storage unit 13, the function of the storage unit 13 is changed. The data is read out and sent back to the function setting device 20 as a confirmation signal BB. Further, when the setting signal SS from the function setting device 20 is in the confirmation mode, the terminal device 10 reads the function data from the storage unit 13 and sends the confirmation signal B to the function setting device 20.
Return it as B. In either the setting mode or the confirmation mode, when the function setting device 20 receives the confirmation signal BB, the function data is displayed on the display 26 so that the user can confirm it. As described above, the memory unit 13 by the function setting device 20
This allows you to set and confirm the memory contents. Here,
As mentioned above, the function setting signal Vt is a bipolar signal and is input from the connection part to the signal line 13 in the terminal device 10, so that the transmission signal Vs is transmitted from the central control device 31 to the terminal device 10. The DC power source shown in FIG. 3(c) can be obtained from the transmitter/receiver section 11 in the same way as when the terminal device 10 is operated by power supply using the transmission signal Vt, and functional data is written in the storage section 13. be able to.

[Embodiment 2] In this embodiment, as shown in FIG. 4, in the terminal processing unit 12, a transmission signal processing unit 12a and a function setting signal processing unit
b without separating the transmission signal and 8! By shifting the reception time with the function setting signal, the two signals can be distinguished. That is, as shown in FIG. 5, when a signal is input to the connection to the signal line 13 and power feeding from the transmitting/receiving section 11 is started, the terminal processing section 12 performs the following operation. That is, until a certain period of time elapses from the start of power supply, it is determined whether or not the function setting signal Vt is input, and when the function setting signal Vt is input, the function data is written to the storage unit 13 and Check the function data. On the other hand, after a certain period of time has elapsed, the function data is read from the storage unit 13 and the function is set. Thereafter, transmission signals are sent and received, and normal monitoring and control operations are performed. Since the function setting signal Vt and the transmission signal Vs are thus distinguished based on the time since the start of power supply, the same signal can be used for the transmission signal Vs and the function setting signal Vt. However, when setting or checking the function data, it is necessary to disconnect the terminal device 10 from the signal line is so that the transmission signal Vs and the function setting signal Vt do not collide.

【Effect of the invention】

As described above, the present invention provides each terminal device with a storage section that holds function data that determines the functions of the terminal device, and a terminal processing section that operates based on the function data in the storage section, and includes the function data. It is configured so that the function setting signal can be fed to the terminal through the connection to the signal line on the terminal, and the function setting signal can be transmitted through the connection to the signal line on the terminal. Since the signal allows power to be supplied to the terminal, simply by giving the function setting signal to the terminal, function settings can be made at the same time as power is supplied to the terminal, even if the terminal is not supplied with power from the signal line. This has the advantage that setting work for terminal functions can be done easily. Moreover, the power supply means in the terminal device can be shared during function setting and control, and the terminals for transmitting and receiving signals can also be shared. Furthermore, if the terminal processing unit is configured to send and receive the function setting signal to the terminal within a certain period of time after power supply to the terminal starts, and to send and receive the transmission signal to the terminal after the certain period of time has elapsed. Since the transmission signal and the function setting signal are identified based on the time since the start of power supply, the signal format can be shared.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a terminal device according to the first embodiment of the present invention, and FIG.
The figure is a block diagram showing the function setting device used in the above, FIG. 3 is an operation explanatory diagram showing the signals in the same, FIG. 4 is a professional Z diagram of the terminal device according to the second embodiment of the present invention, and FIG. FIG. 6 is a schematic configuration diagram of the remote monitoring and control system according to the present invention, and FIG. 7 is an explanatory diagram of the operation of the terminal processing unit in the same as above, showing the format of the transmission signal. DESCRIPTION OF SYMBOLS 10... Terminal device, 11... Transmission/reception section, 12... Terminal processing section, 12a... Transmission signal processing section, ], 2 b
...Function setting signal processing section, 14...Storage section, 20.
...Function setting device, 23...Data processing section, 25...
Keypad, 31... Central control unit, 32... Monitoring terminal, 33... Control terminal, 1. l...Signal line. Agent Patent Attorney Ishi 1) Chief 7 Figure 2 Figure 4 Figure 5

Claims (2)

[Claims] (1) Multiple terminal devices each having an address set are connected to the central control device via signal lines, and data is transmitted between the central control device and the terminal devices using transmission signals sent from the central control device. In a remote monitoring and control system in which power is supplied from a central control unit to each terminal via a signal line, each terminal has a memory section that holds functional data that determines the terminal's functions, and a memory section that stores function data that determines the functions of the terminal device. a terminal processing unit that operates based on the data, and is configured such that the function setting signal including the function data can be supplied with power to the terminal through a connection to a signal line in the terminal. A terminal function setting method for supervisory control systems. (2) The above function setting signal is sent to and received from the terminal device within a certain period of time after power supply to the terminal device starts, and the terminal processing unit is configured so that the above transmission signal is sent to and received from the terminal device after the certain period of time has elapsed. 2. A terminal function setting method for a remote monitoring and control system according to claim 1, wherein the terminal function setting method is configured as follows.