JPH06189027A - Information processor - Google Patents

Abstract

PURPOSE:To easily switch a communication line at the time of generating any abnormality at a controller by detecting the operating condition of the controller, disconnecting the communication line connected to the controller and connecting that communication line to the other controller. CONSTITUTION:When a master controller 2 is detached from an information processor 1 by any reason such as an operator performs maintenance or the like in the using state, a detection circuit 6 outputs a detection signal 9 showing the state of detaching the master controller 2 to a switching circuit 7. When the detection signal 9 is inputted, the switching circuit 7 switches the connection with a telephone line 5 from the side of a switch circuit 4 to the side of a slave controller 3. Therefore, even when the master controller 2 does not exist, information can be exchanged between a host computer 8 and the information processor 1 through the slave controller 3. When the master control circuit 2 is originally mounted, the switching circuit 7 originally switches the connection with the telephone line 5 to the side of the switch circuit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus having a plurality of control devices capable of transmitting and receiving information using a telephone line.

[0002]

2. Description of the Related Art Conventionally, in an information processing apparatus 11 incorporating a plurality of control devices, each control device has a telephone line 1.
2 is used to configure a system capable of transmitting / receiving information to / from another information processing apparatus, FIG.
The configuration is as shown in. In this configuration, the telephone line 15 is first connected to the master control device 12, and then connected to the slave control device 13 via the switch circuit 14 provided in the master control device 12. And
Normally, the telephone line 15 is connected to the master controller 12 by the switch circuit 14. This information processing device 11
When transmitting and receiving information to and from another information processing device, the information is transmitted via the master control device 12, the switch circuit 14, and the telephone line 15.

[0003]

However, if the master control device 12 fails for some reason, or if the master control device 12 is removed for the purpose of inspection or the like, the slave control device 13 continues to operate independently. Need to get up and running. In such a case, the operator must operate the switch circuit 14 to cut off the connection between the master control device 12 and the telephone line 15 and then newly connect the slave control device 13 and the telephone line 15. It was very troublesome.

The present invention has been made to solve the above-mentioned problems, and when a plurality of control devices capable of transmitting and receiving information via a communication line are provided, the control device is connected to the communication line. It is an object of the present invention to provide an information processing device that can easily switch communication lines between control devices when an abnormality occurs in the control devices.

[0005]

In order to achieve this object, an information processing apparatus of the present invention is an information processing apparatus having at least two control devices capable of transmitting and receiving information using a communication line. A detecting means for detecting the operating status of each of the control devices, and when the detecting means detects a non-operating control device, the communication line connected to the control device is cut off. , Line switching means for connecting the communication line to another control device.

Further, each of the control devices may be configured to be attachable / detachable to / from the information processing device, and the detecting means may detect whether or not each control device is attached.

[0007]

In the information processing apparatus of the present invention having the above-mentioned structure, when the detecting means detects a non-operating control device of two or more control devices of the information processing device, the line switching means causes the control device to operate. The communication line connected to is shut off and the communication line is connected to another control device. Therefore, the information processing device is always connected to the communication line, and is continuously used even when trouble occurs.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of the information processing apparatus 1 of this embodiment.

As shown in FIG. 1, the information processing apparatus 1 of the present embodiment has two control devices, a master control device 2 and a slave control device 3, each of which performs processing separately and is required. Accordingly, the master controller 2 and the slave controller 3 are configured to communicate with each other. Further, both the master control device 2 and the slave control device 3 have a function of accessing the host computer 8 located at a remote place through the telephone line 5. The master controller 2, the slave controller 3, and the telephone line 5 are connected via a switch circuit 4 and a switching circuit 7. Further, the master control device 2 is configured to be detachable for maintenance or the like.

Specifically, the telephone line 5 connected to the host computer 8 is connected to the switching circuit 7 of the information processing apparatus 1. The switching circuit 7 is a circuit for switching the telephone line 5 between the switch circuit 4 provided in the master control device 2 and the slave control device 3, and is usually connected to the switch circuit 4 side. Also,
The switch circuit 4 is a circuit for switching the telephone line 5 connected to the switch circuit 4 by the switching circuit 7 between the master control device 2 and the slave control device 3.
A detection circuit 6 for detecting whether or not the master control device 2 is detached from the information processing device 1 is connected to the master control device 2. In the state where the master control device 2 is removed due to maintenance or the like,
A detection signal 9 is output from the detection circuit 6, and the detection signal 9 is input to the switching circuit 7. When the detection signal 9 is input to the switching circuit 7, the connection of the telephone line 5 is switched from the switching circuit 4 side to the slave control device 3 side.

When the master control device 2 accesses the host computer 8 to send and receive information, the switching circuit 4 is connected to the switching circuit 4 side to control the switching circuit 4 to control the telephone line. Connect 5 to yourself. At this time, the slave control device 3 is disconnected from the telephone line 5. Also, the slave controller 3
When the master controller 2 and the slave controller 3 communicate with each other to access the host computer 8 in order to send and receive information, the slave controller 3
Acquires the right to use the telephone line 5 from the master controller 2, and at the same time, the master controller 2 switches the switch circuit 4
To connect the telephone line 5 and the slave control device 3.

When the master control device 2 is removed from the information processing device 1 due to an operator performing maintenance or the like in the above-mentioned use state, the detection circuit 6 detects that the master control device 2 is removed. The signal 9 is output to the switching circuit 7. In the switching circuit 7, when the detection signal 9 is input, the connection with the telephone line 5 is switched from the switching circuit 4 side to the slave control device 3 side. Therefore, even when the master control device 2 does not exist, information can be transmitted and received between the host computer 8 and the information processing device 1 via the slave control device 3.

When the removed master control circuit 2 is mounted again, the detection signal 9 output from the detection circuit 6 changes so as to indicate that the master control device 2 is mounted. The switching circuit 7 switches the connection with the telephone line 5 to the switching circuit 4 side as before.

As described above, in this embodiment, the connection between the telephone line 5 and the information processing device 1 changes depending on the presence or absence of the master control device 2, so the master control device 2 is removed. Even in the state, the telephone line 5 is connected to the slave control device 3, whereby the host computer 8 of the information processing device 1 can be accessed and the operation can be continued. That is, even if the worker removes the master control device 2, it is not necessary to rewire the telephone line 5 to the slave control device 3, and the handling becomes easy.

In this embodiment, the detection circuit 6 detects whether or not the master control device 2 is mounted,
Although the connection with the telephone line 5 was switched according to the detection signal 9 which is the detection result, the state of the master control device 2 is monitored by the detection circuit 6 or the slave control device 3,
Even if the master controller 2 becomes inoperable due to some trouble, it is possible to operate the switching circuit 7 to connect the telephone line 5 to the slave controller 3 by detecting the state.

Further, in this embodiment, the master controller 2
Although the information processing apparatus 1 having two control devices, the slave control device 3 and the slave control device 3, has been described, the same operation is possible even when the control device has three or more control devices.

[0018]

As is apparent from the above description, according to the information processing apparatus of the present invention, the detecting means detects the operating condition of the control device, and the line switching means connects to the control device based on the result. Since the communication line that is connected is shut off and that communication line is connected to another control device, even if there is a problem with the control device to which the communication line is connected, the worker connects the communication line. The information processing apparatus can be continuously used without the need, and the information processing apparatus can be handled easily.

[Brief description of drawings]

FIG. 1 is a block diagram of an information processing apparatus that is an embodiment of the present invention.

FIG. 2 is a block diagram of an information processing apparatus showing a conventional technique.

[Explanation of symbols]

 1 Information processing device 2 Master control device 3 Slave control device 4 Switch circuit 5 Telephone line 6 Detection circuit 7 Switching circuit 8 Host computer 9 Detection signal

Claims (2)

[Claims] 1. An information processing apparatus having at least two control devices capable of transmitting and receiving information using a communication line, and detecting means for detecting respective operating states of the control devices, and detecting the detection means. And a line switching means for disconnecting the communication line connected to the control device and connecting the communication line to another control device when a control device not operating is detected by the means. An information processing device characterized by: 2. The control device is configured to be attachable / detachable to / from each information processing device, and the detection means detects whether or not each control device is attached. The information processing device according to 1.