JPH02311067A - Adaptor for terminal side network controller - Google Patents

Abstract

PURPOSE:To allow the controller to cope with the change in the specifications of the terminal equipment by sending a control code telegraphic message to the terminal equipment when the control code telegraphic message other than the control code registered in the adaptor for the terminal side network controller. CONSTITUTION:When an outgoing telegraphic message comes from a terminal equipment side network controller 6 to an adaptor 17 for a terminal side network controller, the adaptor 17 stores the telegraphic message data entirely to a data memory. When any error exists as a result of error check, the mode restores to the standby mode but when no error exists, the control code of the telegraphic message is decoded. When the code is registered code, the operation according to the code such as data rewrite of the adaptor 17 or sequence control is executed and the telegraphic message finished for its operation is returned to the controller 6 to restore the mode to the standby mode. When the control code is the registered code, the adaptor 17 recognizes the telegraphic message to be a telegraphic message not in relation with itself and sent as it is to the terminal side equipments 7, 8. Thus, the specification change of the equipments 7, 8 is coped.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an additional device for a terminal-side network control device in an automatic data communication system using subscriber telephone lines.

<Prior art> Conventionally, there are two types of automatic data communication systems in which data communication is performed between a terminal side device and a center side device via a telephone line: a terminal calling communication method and a 7-ringing communication method. There is.

In the terminal calling method, when a terminal side device such as a meter sensor makes a call through an additional device (ADP>), the terminal side network control unit (T-NCU) issues a selection signal to the exchange, and the center side secondary control is performed. RA (C-NCU) is called and data communication is performed.

In the no-ringing communication system, a no-ringing trunk is installed at the exchange that accommodates the terminal side equipment, the no-ringing trunk is called and held once from the center side equipment, and then the 7-ringing trunk selects the telephone line to which the terminal side equipment is connected. and reverse the polarity of the telephone line, making it insensitive to house phone rings other than 16Hz ring signals.
A certain alternating current signal is sent out to call the terminal-side network control device and communication is performed to the terminal-side devices 7 and 8 such as meters and sensors through an additional device (ADP).

<Problem to be solved by the invention> In the above conventional technology, an additional device (AD
In the downlink message to P), an additional device (AD
If a control code message other than that registered in P) is received, ADP will not respond.

In other words, when the terminal side devices 7 and 8 such as meters and sensors independently extend the control code, that is, when a new control code other than that registered in the additional device is installed, the message of the extended disconnection control code is added. A situation may occur in which the signal stops at the device and does not reach the terminal devices 7 and 8 such as meters and sensors.

In view of the above, the present invention provides that even if a terminal side device such as a meter or sensor independently extends a control code in its message format, a message using the control code is transmitted from a center side device to the terminal side network. Even if the message is entered into the additional device through the control device, the additional device does not become non-responsive and can send the message to a terminal device such as a meter or sensor.

Means for Solving the Problems 〉 According to the present invention! The JAN solution means is an additional device added to the automatic data communication system as described above to expand the range of application as a system such as a pulse type message type meter or a system for connecting various alarm devices. (for example, a meter) or a downlink message from a terminal side network control unit RA (hereinafter referred to as T-NCU); A self-control means 21 that stores and rewrites its own data, and a message sending device that automatically sends a control message to the terminal-side network control device 6 or terminal-side device 7.8 in the case of a control message that is not directly related to its own control. Means 22 is provided.

Effect> In the above problem solving means, for example, the terminal side device 7.8 (
When the center side sends a message using a new control code (not registered in the additional device) due to a change in the specifications of the meter, sensor, etc. or new development, etc., and the additional device (ADP) 17 receives it, Conventional additional equipment (
ADP) 17 would result in no response, so conventionally,
It was necessary to change the specifications of the ADP each time a new control code was installed, but in the additional device 17 according to the present invention, even if the control code for the terminal side device 7.8 is newly installed, the specifications of the additional device must be changed each time. Without changing the specifications of 17,
can be accommodated.

<Example> Hereinafter, an example of the present invention will be described based on FIGS. 1 to 7.

FIG. 1(a) is a block diagram of a system configuration showing an embodiment of an automatic data communication system according to the present invention, and FIG.
) is the same functional block diagram of the additional device, and Figure 2 is the same (
The control flowchart, Figure 3, shows the terminal side network control device (T-
Figure 4 is a block diagram of the additional device (ADP) for the NCU), the block diagram of the main controller of the same ADP, the ttSS diagram, and Figure 6 are sent from the center side device to the additional device through the T-NUC. FIG. 7, which is a diagram showing an example of a 7-automatic message, is a configuration diagram of a control code of an ADP or a terminal side device.

As shown in the figure, the automatic data communication system according to the present invention includes:
It is configured as shown in FIG.

That is, in FIG. 1, 1 is a host computer,
2 is a center side network control unit (C-NCU), 3 is a switching center (LS) connected to the center side, and 4 is connected to the terminal side. The switching center (LS) 5 is a ringing trunk used in the end-of-line no-ringing system. 6 is a terminal-side network control device (T-NUC), and 7 and 8 are terminal-side devices including meters, sensors, and the like. 9 is the home phone,
10.11 is a connection line, 12.13 is a telephone circuit line 14 is an interoffice trunk line, and 15.16 is an interface line between the exchange 4 and the 7-ringing trunk 5.

This system performs data communication by making a terminal call from the terminal device 7.8, or by using the no-ringing trunk 5 connected to the exchange 4 of the central office to connect the terminal side network without causing the home telephone 9 to ring. The control device 6 is connected to perform data communication, and in the message sent from the center device 2 to the terminal devices 7 and 8, the additional device 17 automatically switches to through mode ( It is set so that the message is sent directly to the terminal device.

That is, the additional device (ADP
) 17 receives control codes (for example, 16 types determined by b1 to b4) configured as shown in FIG. When the control code message is received, the additional device 17 sends the message to the terminal side devices 7 and 8 without any processing.

FIG. 5 shows a block diagram of the ADP 17. In the figure, 171 is a main controller, 172, 173, 174 are interface circuits, 175 is a reset circuit, 176 is an oscillation circuit, and 177 is a power supply circuit.

Figure 6 shows ADP1? This is an internal configuration diagram of the main controller 171 in the main control unit 171, which includes a CPU 702 that is the central control unit, a timer counter 701 that inputs the signal from the oscillation circuit 176 and measures time, a program memory 704 that instructs the CPU 702 to control, and It consists of a data memory 703 that temporarily holds data to be stored, and an interface (Ilo) 705 between the main controller 605 and the outside.

That is, the additional device 17 will next explain the message format. This is a configuration as shown in #rIs diagram, Figure 6, and includes ADP or terminal side equipment (meter, sensor, etc.)
It contains information such as outdated data and various control commands. FIG. 7 is a block diagram of one character. For example, if the start bit, stop bit, and b5 are fixed, 16 types of information can be transmitted using the four bits b1 to b4.

The additional device 17 is configured to pass through the 16 types of control codes if a control food message unrelated to itself, such as initial setting of ADP, is invalid.

FIG. 2 is a flowchart showing the operation of one embodiment of the present invention. That is, when a downlink message comes from the T-NUC 6 to the ADP 17, the ADP 17 stores all the message data in the data memory. As a result of the error check, if there is an error, standby (ready to receive)
Return to mode, and if there is no error, decode the control code in the message.

If the hood has a registered code, it performs the operation according to the code (for example, rewriting ADP data, sequence control, etc.), then sends a message indicating the end of the operation back to the T-NUC 6 and returns to standby mode.

If the control hood is outside the registration code, ADP 17
It recognizes that the message is not related to itself, and sends it (through) to the terminal devices 7 and 8 as it is.

It should be noted that the present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

<Effects of the Invention> As is clear from the above explanation, when a control code that has not been used before is defined due to a change in the specifications of the terminal side device (meter, sensor, etc.), conventionally the ADP will not respond. However, in the present invention, in the control message sent from the center side device to the ADP or the terminal side device (meter, sensor, etc.), a control code message other than the control code registered in advance in the ADP is received. If ADP
Since the message is unconditionally sent to the terminal device (through), it has the excellent effect of being able to accommodate changes in specifications (definition of new control codes) of the terminal device (meters, sensors, etc.).

[Brief explanation of drawings]

FIG. 1(a) is a block diagram of a system configuration showing an embodiment of an automatic data communication system according to the present invention, FIG. 1(b) is a functional block diagram of an additional device, and FIG. 2 is a control flowchart. Fig. 3 is a block diagram of the additional device (ADP) for the terminal side network control device, Fig. 4 is a block diagram of the main control device of the same ADP, and Figs. FIG. 7 is a diagram showing an example of the format of a message sent to an additional device through the ADP or the control code of the terminal side device. 1: Host computer, 2: Center side network control device (
C-NCU), 3: Center side switching center (LS), 4: Terminal side switching center (LS), 5: No-ringing trunk, 6
:Terminal 1lIIWI control device (T-NUC), 7, 8:
Terminal side device, 9: Home telephone, 20: Message decoding means, 2
1: Self-control means, 22: Message sending means, 171: Main controller, 172, 173, 174: Inter-7 eighth circuit, 175: Reset circuit, 176: Oscillation circuit, 177
: Power supply circuit, 701: Timer counter, 702: Central control unit (CPU), 703: Data memory, 704 Niprogram memory, 705: Inter 7 Eighth.

Claims (1)

[Claims] Data communication is performed by making a terminal call from the terminal side device, or data communication is performed by connecting the terminal side network control device without making the home telephone ring using a no-ringing trunk connected to the terminal side switching center. In an automatic data communication system, there is a message decoding means for receiving and decoding an upstream message from a terminal side device or a downstream message from a terminal side network control device, and a method for storing or storing own data based on the decoded message by the message decoding means. A self-control means for performing a rewriting operation, and a message sending means for automatically sending a control message to a terminal-side network control device or a terminal-side device in the case of a control message not directly related to self-control. Additional device for terminal side network control device.