JPH0451736A - Terminal equipment diagnostic method - Google Patents

Abstract

PURPOSE:To simply discriminate mis-setting of an equipment number of a terminal equipment by grasping number of terminal equipments connecting to a loop by a count of an inquiry signal so as to check the terminal equipment number. CONSTITUTION:A controller 11 connects to a host computer 12 and lots of terminal equipments 14 via a loop 13. Upon the receipt of an inquiry signal from the controller 11, a terminal equipment #1 replies the controller 11 and sets the count to '1', which is sent to the terminal equipment. After the initial diagnosis is finished, the mode of the inquiry signal ENQ is set to '0' to make general diagnosis. Thus, the setting of terminal equipment number in duplicate is simply detected and the reliability is improved.

Description

[Detailed Description of the Invention] [Summary] Regarding a terminal diagnosis method for a large number of terminal devices connected to a control device via a loop, a terminal judgment method is provided that can easily identify errors in setting the terminal device number. The control device uses a gate control signal to notify all terminal devices in the loop whether it is a general diagnosis or an initial diagnosis, and in the initial diagnosis, the control device sets the counter value of the inquiry signal to the initial value. When the terminal device receives the inquiry signal, it notifies the control device of its own terminal number and also increments the counter value of the inquiry signal by one and sends it to the next terminal device. The device is configured to notify only its own terminal number to the control device in response to an inquiry signal.

[Industrial Application Field] The present invention relates to a terminal diagnosis method for a large number of terminal devices connected to a control device via a loop.

In a terminal control system in which a large number of terminals are connected in a loop, a diagnostic command is issued from the control device, and all terminals that receive the diagnostic command transmit their own machine numbers. On the control side, this machine number was compared with the contents of the already registered table, and if there was a discrepancy, the operator was notified of a terminal failure.

However, this process of setting the machine number is done manually by using the machine number switch installed on the terminal, so when the number of terminals is in the hundreds, it takes a lot of time, and it can also lead to incorrect or incorrect settings. do. In particular, setting errors occur immediately after a new system is installed, or when terminals are replaced or added.

Therefore, it is necessary to easily determine duplicate settings of machine numbers.

[Conventional technology] FIG. 5 shows a system diagram of terminal control.

In FIG. 5, 1 is a control device, and to the control device 1, for example, five loops 2 are connected, and each loop 2 has a maximum of 100 terminal devices! (For example, a ticket issuing machine, a refund machine, etc.) 3 are connected to each other. Control device 1 is connected to host computer 4 .

Next, a conventional terminal diagnosis method will be explained based on FIG.

FIG. 6 shows the terminal device # of the terminal devices 3 from the control device 1.
This shows a case where control data (CD) is transmitted to 0. Since the control data (CD) stores the terminal number to be transmitted, terminal device #0
If a corresponding terminal number is set, terminal device #0 receives it.

Next, the control device 1 sends the gate control signal GC1 to the terminal device #0. #2. #0, and then sends a request signal RQA to terminal device #o.

The request signal RQA is a request to send a response signal ACK, and the control device 1 sends the two terminal devices #0 as shown in the figure.
．． Receives response signal ACK from #0. As a result, the control bag fil detects a data length error.

[Problems to be Solved by the Invention] However, in such a conventional terminal diagnosis method, a data length error is detected on the control device side, but the terminal device notifies the control device only of the terminal machine number. Since the number of terminal devices connected to the loop is unknown, it is not possible to determine whether this type of error is due to duplicate device numbers being set. There was a problem.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a terminal diagnosis method that can easily determine whether there is a setting error in the terminal device number.

[Means to solve the problem] FIG. 1 is a diagram explaining the principle of the present invention.

In Fig. 1, a indicates a step in which the control device notifies all terminal devices in the loop of general diagnosis or initial diagnosis using a gate control signal, and b indicates a step in which the control device initializes the counter value of the inquiry signal in the initial diagnosis. C is a step of converting the inquiry signal into a value and outputting it to the terminal device. When the terminal device receives the inquiry signal, it notifies the control device of its own terminal number, and also increments the counter value of the inquiry signal by one and transmits it to the next terminal device. Step d is a step in which, in general diagnosis, the terminal device notifies only its own terminal device number to the control device in response to an inquiry signal.

[Operation] Using the gate control signal, the control device notifies the terminal device whether it is a general diagnosis or an initial diagnosis, and in the initial diagnosis, the terminal device increments the counter value of the inquiry signal from the control device one by one, and Sends own terminal number to the control device.

The control unit determines the number of terminal devices connected to the loop based on the counter value of the inquiry signal, and checks the terminal number.

Therefore, when a system is newly installed, or when terminal devices are replaced or added, it can be easily determined whether the terminal devices are connected redundantly.

In this way, errors in setting the machine number can be easily diagnosed and the reliability of the system can be improved.

[Example] Embodiments of the present invention will be described below based on the drawings.

FIGS. 2 to 4 are diagrams showing an embodiment of the present invention.

In FIG. 3, 11 is a control device connected to a host computer 12, and a large number of terminal devices 14 are connected to the control device 11 via a loop 13.

The terminal device 14 includes a display control unit 15 that controls the display of information such as voting data, odds, and refunds entered on the display screen, reads the IC card or magnetic card that is the membership card of the fan (subscriber), and displays the membership number. The card reader control unit 16 sends the information to the center, checks the card each time a fan makes a vote or makes an inquiry, and returns the card when the service ends; the PIN number after entering the card, menu selection, race A KB control unit 17 for inputting numbers, horse/group numbers, amounts, etc., a line control unit 18 for transmitting and receiving serial data on the loop 13, and programs for initial diagnosis and remote iPL control are stored. ROM19, RAM20 that stores terminal programs and is used as a data buffer, and MPtJ
It has 21.

The control device 111 is shown in FIG. 4 and is duplicated to improve reliability.

The control unit [11 includes a display unit 22 for displaying the operating status,
23, an adapter 24 for controlling the display section 22.23.
25. Adapter 26, 27 for monitoring the status of other systems and switching in case of abnormality by opposite connection; adapter 28, 29 for loop control; switching unit 30 for connecting to any of the duplexed systems; Disc 31.
Adapter 35, 36 for connecting 32, floppy disk 33, 34, adapter 37, 38 for connecting to host computer 12, memory 39, 40 and CPU 4
1.42.

Next, a terminal diagnosis method will be explained based on FIG.

In FIG. 2, first, the control device 11 uses the gate control signal GC3 to initialize the general diagnosis for the terminal devices 14 (here, three terminal devices #2, #O, and #1) in the loop 13. Notify me of the diagnosis.

When the mode of the gate control signal GC3 is 0, it is a general diagnosis, and when the mode is 1°, it is an initial diagnosis.

Here, terminal device #2 is set in initial diagnosis mode. #0. Let us start diagnosis for #1.

Upon receiving the gate control signal GC3 from the terminal device #1, the control device 11 then sends an inquiry signal ENQ to the terminal device #2. At this time, the counter value of the inquiry signal ENQ is "0" and the mode is "1".

When the terminal device #1 receives the inquiry signal ENQ from the control device 11, it responds with its own terminal number DD2 to the control unit fill, and sets the counter value of the inquiry signal ENQ to "■".
” and send it to terminal device #0.

When terminal device #0 receives the inquiry signal ENQ, it transmits its own terminal number DDO to the control device! In response to 11,
The counter value of the inquiry signal ENQ is set to "2" and sent to the terminal device #1.

When the terminal device #1 receives the inquiry signal ENQ, it responds with its own terminal number DDI to the control device 111, and
The counter value of the inquiry signal ENQ is set to "3" and sent to the control device 11.

The control unit ff1ll receives an inquiry signal EN from the terminal device #1.
When terminal device #2.Q is received, the counter value of the inquiry signal ENQ is exactly equal to terminal device #2.Q. The number of terminals is #O and #1.

In this way, the terminal numbers DD2 and 0 correspond to the number of terminals.
．． 1 is sent to the control device 11, so the control device 11 receives the terminal device #2. #0. It can be easily determined that #1 is not installed twice. Here, for example, if two terminal devices #2 are installed and overlap,
Although the counter value is 3, only two terminal machine numbers, DD2 and DDO, are notified, so it is possible to detect that there has been a setting error in the machine number.

After the initial diagnosis is completed, the mode of the inquiry signal ENQ is set to "0" and a general diagnosis is performed. In this case, terminal device #2. #0. #1 sends the terminal number DD2. to the control device 11. Only DDO and DDI are responded. In this case, since only the terminal number is transmitted, the time required for diagnosis can be shortened.

[Effects of the Invention] As explained above, according to the present invention, in the initial diagnosis, the terminal device side responds with the terminal machine number, and the counter value of the inquiry signal is incremented by 1 and transmitted to the control device side. As a result, duplicate settings of terminal numbers can be easily detected and reliability can be improved.

[Brief explanation of drawings]

Fig. 1 is a diagram explaining the principle of the present invention, Fig. 2 is a sequence diagram of an embodiment of the present invention, Fig. 3 is a diagram showing a terminal device, Fig. 4 is a diagram showing a control device, and Fig. 5 is a terminal device. Control system diagram FIG. 6 is an explanatory diagram of a conventional example. In the figure, 11...Control device, 12...Host computer, 13...Loop, 14...Terminal device, 15...Display control unit, 16...Card league control unit, 17...・KB control unit, 18... Line control unit, 19... ROM. 20...RAM. 21...MPU. 22.23...Display unit, 24-29.35-58...Adapter, 30...Switching unit, 31.32...Disk, 33.34...Floppy, 39.40... Memory, 41.42...CPU0

Claims (1)

[Claims] The control device notifies all terminal devices in the loop whether it is a general diagnosis or an initial diagnosis using a gate control signal (a)
In the initial diagnosis, the control device sets the counter value of the inquiry signal to an initial value and outputs it to the terminal device (b), and when the terminal device receives the inquiry signal, it notifies the control device of its own terminal machine number and also outputs the counter value of the inquiry signal to the terminal device (b). Increment the counter value by one and send it to the next terminal device (c), and in general diagnosis, the terminal device notifies only its own terminal device number to the control device in response to an inquiry signal (d) A terminal diagnosis method characterized by: