JPS6189747A - Transmission controller - Google Patents

Abstract

PURPOSE:To allow a control terminal to transmit periodically a test instruction to a control device via a transmission communication line by providing a time measuring means, a test instruction generating means and a monitor display means to the control terminal of a transmission controller. CONSTITUTION:When control modules 3-5 are disconnected from a lighting line 1 or at the initial state after power restoration, a monitor display means 13 may display erroneous ON/OFF state of loads 6-8, and in order to prevent this action, an instruction of the control modules 3-5 transmitting the ON/OFF state of the loads 6-8 to the lighting line 1 as information is transmitted from the control terminal 2 to the lighting line 1. The test instruction turns on an instruction switch 17 and when a switch state detection means 15 detects that the test instruction switch 17 is turned on, the instruction is generated by a test instruction generating means 16 via an operation control means 12. Then the result is transmitted to the lighting line 1 via a transmission means 10 and a signal superimposing means 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a transmission control device between devices arranged in a distributed manner.

2. Description of the Related Art In recent years, in order to centrally control multiple devices or monitor the current status of devices, devices have been connected electrically through communication channels to transmit control signals to each other. Suitable transmission control methods have been researched, and some have reached the practical stage. In order to ensure that the ON/OFF status of the terminal load currently displayed by the control terminal, which has the function of monitoring the load status of the terminal, is always displayed correctly, the control terminal must perform a specific method for each terminal. A command to inquire about the ON/OFF state of the load (hereinafter referred to as a test command) is required. As a technique to avoid this, for example, as shown in Japanese Patent Application No. 58-223644, there is a method in which the control terminal is provided with a test command switch and a test command is issued by turning on the test command switch.

Hereinafter, a transmission control device equipped with a test command switch as described above will be explained with reference to the drawings. In FIGS. 3 and 4, reference numeral 1 indicates a power line as a transmission communication path, and a control terminal 2 and control modules 3, 4.5 are connected to the power line 1.
, 5 are connected to loads 6, 7.8, respectively. FIG. 3 shows details of the control terminal 2 in FIG. 4,
3 and 9 are signal superimposing means that superimposes the command to be transmitted onto the power line 1 and converts the signal superimposed on the power line 1 into a state where it can be received as a command. 10 is a transmitting means, and 11 is a receiving means. 12 is calculation control means, monitor display means 13,
Control signal generating means 14, switch state detecting means 15, and test command generating means 16 are connected. A test command switch 17 is connected to the switch state detection means 16 .

The operation of the transmission control device configured as described above will be explained below. The arithmetic control means 12 outputs a command to the transmitting means 1o based on the signal from the control signal generating means 14, and the command transmitted from the transmitting means 10 is sent to the signal superimposing means 9.
The control module 3,4.5 is superimposed on the power line 1 and controls the control module 3,4.6 through the power line 1.
Turn on/off the loads 6, 7.8 connected to. At this time, the control modules 3, 4.5 turn on the loads 6, 7.8.
A signal indicating the /OFF state is transmitted to the power line 1, the control terminal 2 receives the signal through the receiving means 11, and displays the load 6.7 on the monitor display means 13 via the arithmetic control means 12.
8 Displays ON/OFF status. However, if the control modules 3, 4.5 are disconnected from the power line 1, or in the initial state after the power is restored, the monitor display means 13
However, the ON/OFF status of the loads 6 and 7゜8 may be displayed incorrectly, and to prevent this, the ON/OFF status of each load 6 and 7゜8 is not changed as a test command.
Control modules 3, 4.5 are connected to respective loads 6, 7.8
The control terminal 2 transmits a command to transmit the ON/OFF state of the power line 1 as information to the power line 1. This test command is transmitted to the test command generating means 1 via the arithmetic control means 12 when the test command switch 17 is turned on and the switch state detection means 16 turns on the test command switch 17.
6, and is transmitted to the power line 1 by the transmitting means 1o and the signal superimposing means 9.

Problems to be Solved by the Invention However, in the above configuration, the test command is transmitted only when the test command switch 17 is turned on.
If you want to know based on 3, you have to turn on the test command switch 17, which is unnecessary, and at the same time, it is unnecessary to trust the false display on the monitor display means 13 for a long time until the test command switch 17 is turned on. Depending on the type of load, this may cause safety problems.

In view of the above drawbacks, the present invention periodically sends a test command to the power line without turning on the test command switch, correctly displays the ON/OFF state of the load on the monitor display means 13, and monitors the load state. At last, it saves you the trouble of turning on the test command switch and turns on the correct load.
/OFF information can be obtained at all times, and also provides sufficient functions as a monitoring device.

Means for Solving the Problem In order to achieve this object, the transmission control device of the present invention includes a plurality of control devices that can communicate with each other, a time measurement device that controls the control devices, and a time measurement device that controls the periodicity of the time measurement device. a control terminal comprising a test command generating means operated by a target signal, a monitor display means for displaying an ON/OFF state of the control device in response to the command from the test command generating means, the control device and the control device; It consists of a transmission communication path that connects the terminal.

Effect: With this configuration, the interval at which test commands are transmitted can be determined at a constant interval by the time measurement means, and a signal is input to the test command generation means at a constant interval, and a signal is input from the test command generation means at a constant interval. A test command is sent to the transmission communication path and received by the control device via the transmission communication path, and at this time, the control device turns on/off the control device to the transmission communication path.
OFF state information is transmitted, and based on this information, the monitor display means displays the ON/OFF state of the control device.

EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 1 shows a control terminal of a transmission control device in a first embodiment of the present invention. In FIG. 1, the same parts as in FIG. 3 are given the same reference numerals and their explanations are omitted. 12, respectively. Other parts are the same as those shown in FIG. 3, and the control terminals 2 as described above are connected as shown in the block diagram of FIG. 4 to constitute a transmission control device.

The operation of the transmission control device configured as described above will be described below.

In a manner similar to that shown in FIGS. 3 and 4, the control terminal 2 controls the control module 3.4.6 via the power line 11, and the loads 6, 7,
8 ON/OFF L, at this time control modules 3 and 4
, 5 transmits the ON/OFF status of the loads 6, 7, 8 to the control terminal 2 via the power line 1, and
The ON/OFF status is displayed on the monitor display means 13. However, when the control modules 3, 4.5 are disconnected from the power line 1, or in the initial state after the power outage is restored, the monitor display means 13 displays the ON/OFF state of the loads 6, 7, 8.
The OFF state may be displayed, and in order to prevent this, the control module 3, 4゜6 position (';
h(7) Loads 6 , 7 , 8 (7) The control terminal 2 transmits to the power line 1 a command to transmit the ON/OFF state as information to the power line 1 . This test command turns on the test command switch 17, and when the switch state detection means 16 detects that the test command switch 17 is turned on, the test command generation means 16
and is transmitted to the power line 1 via the transmitting means 1o and the signal superimposing means 9. Further, the timer means 18 counts a certain period of time, and the timer means 18 counts a certain period of time.
sends a signal to the test command generation means 16 via the arithmetic control means 12, so that the test command generation means 16 sends a test command to the arithmetic control means 12, the transmission means 1o, and the signal superimposition means 9 at predetermined fixed time intervals. It is transmitted to the power line 1 via the power line 1. When the test command is sent from the control terminal 2 to the power line 1 by the above two methods, the control module 3, 4.5 receives the test command from the power line 1 and performs this test 9A.

As a reply to the load command, the control modules 3, 4, and 5 transmit a signal to the power line 1 containing the ON/OFF states of the respective loads 6, 7, and 8 as information.

And the control terminal 2 is this control module 3.4
．． Load 6 t 7 # 8 receives the signal from 5 and connects to the control module 3, 4.5 on the monitor display means 13
ON/OFF status L! fDisplay.

The control modules 3, 4.15 each have a unique address, and can be controlled from the control terminal 2,
The test commands can be sent to each control module individually, or the control modules 3, 4.5 can be divided into several groups.

As described above, according to this embodiment, the timer means 18 as a time measuring means, the test command generation means 16, the monitor display means 13, the switch state detection means 16, and the test command switch 17 are connected to the control terminal 2 at the same time. By providing a test command switch 17, if the ON/OFF states of many loads must be set on the monitor display means 13 at once in the initial state after power recovery, etc. can be transmitted from the control terminal 2, and in order to make the display on the monitor display means 13 correct in other normal conditions, the final test command switch 1 is sent.
Test commands can be sent from the control terminal 2 by regular signals from the timer means 18 without turning on the timer 7, and the display on the monitor display means 13 can be checked periodically, so that the correct display is always displayed on the monitor display means 13. It is now possible to send test commands in a manner that suits the situation, and it can also function as a monitoring device.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 shows a control terminal of a transmission control device showing a second embodiment of the present invention. In FIG. 2, a monitor display means 13, a test command generation means 16,
The timer means 18 are connected to each other via the calculation control means 12.

Another configuration is the switch state detection means 16 in FIG.
, except that there is no test command switch 17.

The structure is similar to that of the first embodiment. The operation of the transmission control device configured as described above is such that in the first embodiment, a test command can be generated and transmitted from the control terminal 2 by turning on the test command switch 17, but this is not possible. The rest is the same as the first embodiment.

As described above, by transmitting the test command by a periodic signal from the timer means 18 having the test command switch 17, it is possible to set the initial state of the display on the monitor display means when the power is restored. Although it is not possible to send a test command every time you want to set the test command, by shortening the interval at which the timer means 18 sends out the test command stop signal, the function as a monitoring device can be sufficiently fulfilled, and the test command switch 17 and the switch state can be Since the display on the monitor display means 13 can be checked regularly rather than transmitting test commands only by turning on the test command switch 17, the display on the monitor display means 13 is always correct. Further, it is possible to save the effort of turning on the test command switch and to reduce the cost for providing the test command switch 17 and the switch state detection means 15.

In addition, 1. The signal superimposition means 9, the transmission means 1o, the reception means 11, the arithmetic control means 12, the monitor display means 13, the control signal generation means 14, the switch state detection means 15, the test command generation means 16, and the timer means 18 in the second embodiment are It shall be realized by both hardware and software.

Effects of the Invention As described above, the present invention provides a control terminal of a transmission control device with a time measurement means, a test command generation means, and a monitor display means, so that the control terminal can communicate with the control equipment via the transmission communication path. Test commands can be sent periodically, saving the trouble of performing several operations in order to send test commands, as well as checking the display on the monitor display means periodically. ON/O
The correct display of the FF status can be made on the monitor display means, and sufficient functions as a monitoring device can be provided.
．． 7. There is a huge effect.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a control terminal of a transmission control device in a first embodiment of the present invention, FIG. 2 is a block diagram of a control terminal of a transmission control device in a second embodiment of the present invention, and FIG. 3 is a block diagram of a control terminal of a transmission control device in a second embodiment of the invention. A block diagram of the control terminal of the transmission control device of the prior application, FIG. 4 is a block diagram of the same transmission control device. 1...Light line, 2...Control terminal, 3,4゜6...Control module, 6,7,8
...Load, 13...Monitor display means,
16...Test command generation means, 18...
- Time measurement means (timer means). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3

Claims (1)

[Claims] It has a plurality of control devices that can communicate with each other, a control terminal that controls the devices, and a transmission communication path that connects them, and the control terminal has a time measurement device and a periodic signal from the time measurement device. A transmission control device comprising test command generation means that operates, and monitor display means that displays ON/OFF states of control equipment in response to commands from the test command generation means.