JPH05120184A - Terminal equipment control system - Google Patents

Abstract

PURPOSE:To find out uncommunicable terminal equipment at early stages by pointing out the uncommunicable terminal equipment when a system is started up in terminal equipment connected to a package incorporated in a central processing unit(CPU) which controls the terminal equipment with a network. CONSTITUTION:Switches 1a-4a in the terminal equipment set the station addresses (1-4 in this case) of proper numbers in the terminal equipment, and a dip switch 6 sets the terminal equipment connected physically to the package 5, and a control part 9 outputs a command representing whether or not communication in sequence of the station address of the switch in the terminal equipment can be performed, and the communication of the dip switch 6 with the terminal equipment 1-4 is performed depending on the result of response from the terminal equipment 1-4, and the result of response representing a value whether or not the communication of the package 5 with the terminal equipment 1-4 can be performed is written on a register 7 under by the control of the control part 9, and a comparator 8 compares the value of the dip switch 6 with that of the register 7, then, outputs a communication state representing whether or not the communication can be performed. Thereby, it is possible to find out the uncommunicable terminal equipment at early stages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for a terminal device, and more particularly to a control system between a package which is built in an information device and controls the terminal device and a network of the terminal device.

[0002]

2. Description of the Related Art In a conventional terminal device control method, a station address is set in a terminal device, and an operating system (hereinafter referred to as OS) recognizes and controls a communicable terminal device.

[0003]

In the above-described conventional terminal device control method, the OS recognizes only communicable terminal devices, and at the time of system startup, means for pointing out any incommunicable terminal devices. However, there is a drawback that it takes a long time to find the incommunicable terminal device.

An object of the present invention is to set a switch in the terminal device indicating a station address in the terminal device by a switch in the package of the control package built in the central processing unit to perform communication between the control package and the terminal device. , By pointing out whether or not each terminal device can communicate with the control package, the above-mentioned drawbacks are solved,
An object of the present invention is to provide a terminal device control method capable of early detection of an incommunicable terminal device.

[0005]

According to a terminal device control method of the present invention, a control package built in a central processing unit and a terminal device connected by a network communicate with each other to control the terminal device. In the terminal device control method, a switch in the terminal device that sets the station address of a unique number in the terminal device in the terminal device, and a control package that sets the physically connected terminal device in the control package A switch and a control unit that outputs a command as to whether communication is possible in the station address order of the switch in the terminal device and communicates between the switch in the control package and the terminal device according to the response result from the terminal device,
As a result of the response under the control of the control unit, the register for writing the value indicating whether communication between the control package and the terminal device is possible and the value of the switch in the package and the value of the register are compared and the communication status indicating whether communication is possible is output. And a comparison means for doing so.

[0006]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram of a system using a terminal device control system according to an embodiment of the present invention, and FIG. 2 is a front view showing a DIP switch 6 of the present embodiment.

In FIG. 1, a system using the terminal device control method of this embodiment is a switch 1a in the terminal device for setting a station address of a unique number in the terminal device.
Terminal devices 1 to 4 having 4a to 4a, a dipole switch 6 having four poles for setting physical connection of the terminal device, and a register 7 and a dip switch for setting information as to whether communication with the terminal device is possible or not. 6 and a register 8 for comparing the value of the register 7 with a control unit 9 for controlling them, and a control package 5 built in a central processing unit. The packages 5 are connected by a branch network 10.

In FIG. 2, the dip switches 1 to
The 4th bit corresponds to 1 to 4 of the terminal device and is set to either 0 or 1 (0: not connected, 1: connected).

Before the start-up, the dip switch 6 is set (in the case of this embodiment, all the bits are set to the "1" side). The intra-terminal device switches 1a to 4a of the station addresses in the terminal devices 1 to 4 are sequentially set to "1 to 4", respectively.

Upon start-up diagnosis, the control unit 9 controls the terminal device 1
A signal indicating whether communication is possible or not is sent to the register 7. When there is a response, "1" is set in the register 7, and when there is no response, "0" is set. This operation is sequentially performed for the terminal devices 1 to 4, and the presence or absence of the response of all the terminal devices is shifted and set in the register 7.

Next, the values of the DIP switch 6 and the register 7 are compared bit by bit by the comparator 8, and if they are equal, the terminal device can communicate and sends "1",
In cases other than equal, communication is impossible and "0" is transmitted. This process is performed for all bits and the resulting value is sent to the CPU. The CPU displays the value through the control panel and identifies the communication status of the terminal device.

When the cable is broken at the broken portion 11 of "X" in FIG. 1, there is no response from the terminal devices 2, 3 and 4,
The value of “1000” is set in the register 7, and the value of the dip switch 6 is set to “1111”.

Since the result after the comparison has a value of "1000", it can be seen that the terminal device with the station address 1 can communicate and the terminal devices with the station addresses 2 to 4 cannot communicate.

[0015]

As described above, according to the terminal device control method of the present invention, an incommunicable terminal device is found early by indicating whether each terminal device can communicate with the control package. There is an effect that you can.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a system using a terminal device control system according to an embodiment of the present invention.

FIG. 2 is a front view showing a DIP switch of the present embodiment.

[Explanation of symbols]

 1 to 4 terminal device 1a to 4a switch in terminal device 5 control package 6 dip switch 7 register 8 comparator (comparator) 9 control unit 10 branch network 11 disconnection point

Claims (1)

[Claims] 1. In a terminal device control system for controlling the terminal device by performing communication between a control package built in a central processing unit and a terminal device connected by a network, A switch in the terminal device for setting a station address of a unique number in the terminal device, a switch in the control package for setting the physically connected terminal device in the control package, and a switch in the terminal device A control unit that outputs a command as to whether communication is possible in the order of station addresses and communicates between the switch in the control package and the terminal device according to the result of the response from the terminal device, and the result of the response by the control of the control unit. A register for writing a value indicating whether communication between the control package and the terminal device is possible; A terminal device control method comprising: a comparison means for comparing a value of a switch in a cage with a value of the register and outputting a communication state indicating whether communication is possible.