JPH08204364A - Controller having function for monitoring mounting-change of package - Google Patents

Abstract

PURPOSE: To prevent an abnormal operation in the case of the re-inputting of a power supply even when there are some changes in a device-configuration during the interruption of the power supply, in the controller of an exchange, etc., which has a configurative-information holding function even during the interruption of the power supply. CONSTITUTION: Packages 10, 20, 30 configure together a closed circuit via a back board part 40. The package 10 has a mounting-change sensing part 11, a backup power supply part 12, a configurative-information holding memory 13 and a controlling part 14. The mounting-change sensing part 11 monitors the mounting-changes of the respective packages even in case of the interruption of a power supply, and holds the presence of the mounting- changes. In case of the re-inputting of the power supply, the controlling part 14 confirms the state of the mounting-change sensing part 11, and when there has been no mounting-change during the interruption of the power supply, it determines a system-configuration while referring to the contents of the configurative-information holding memory 13, and then, it performs the restarting processing of an exchange. Also, when there have been some mounting-changes during the interruption of the power supply, the controlling part 14 initializes the configurative- information holding memory 13. and after bringing the system-configuration into an initial state, it performs the restarting processing of the exchange.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device having a package mounting change monitoring function for monitoring a mounting change of an electronic circuit package which constitutes a control device of a system such as an exchange when the power is turned off.

[0002]

2. Description of the Related Art Conventionally, a code indicating a mounting position of a package is stored in a non-volatile memory in each package, a buffer memory for storing the mounting position code of all packages is provided, and when the package is mounted again. , There is a technology for detecting an error in the mounting position of the package by comparing the code stored in the mounted package with the code stored in the buffer memory to prevent the erroneous mounting (for example, Japanese Patent Laid-Open No. 2000-242242). 2-19220
No. 0 publication).

[0003]

When the above-mentioned conventional technique is applied to a control device having a package mounting change monitoring function when power is cut off, a code indicating the mounting position of the package is stored in the nonvolatile memory in each package. Since they are stored, when the same code is replaced with the package stored in the non-volatile memory in the package when the power is turned off, the change cannot be detected. Therefore,
There was a drawback that the system such as a switch could not be restarted normally when the power was turned on again.

[0004]

A control device having a package mounting change monitoring function of the present invention includes a first package and a plurality of second packages provided for each function of the control device, and the first and second packages. A backboard unit that connects the first package and the second package when the second package is mounted;
Package has a mounting change detection unit, a backup power supply unit, a configuration information holding memory, and a control unit, and the first and second packages use the configuration information holding memory to provide configuration information indicating the system configuration of the control device. Managed, the mounting change detecting unit forms a closed circuit with respect to the second package through the backboard unit to monitor the mounting change,
The mounting change detecting unit and the configuration information holding memory are connected to the backup power supply unit and can monitor the mounting change of the first and second packages and hold the configuration information, respectively, even when the power is turned off. The mounting change detection unit detects and holds this change when at least one of the first and second packages is removed from the backboard unit, and the controller controls the state of the mounting change detection unit when the power is turned on again. If there is no mounting change during power off, the system configuration is determined by referring to the contents of the configuration information holding memory and restart processing is performed.If there is a mounting change during power off, the above configuration is changed. The information holding memory is initialized, and the system configuration is set to the initial state and restart processing is performed.

[0005]

The present invention will be described below with reference to the drawings. Referring to FIG. 1 showing an embodiment of the present invention, the electronic circuit packages 10, 20, ..., 30 are removably mounted on a backboard unit 40 via connectors (not shown). These packages 10 to 30 constitute each function of the control device of the exchange, for example, the package 10 performs a CPU function, the package 20 performs a memory function, and the like. However, in this embodiment, only the parts necessary for explaining the features of the invention are shown. The package 10 includes a mounting change detection unit 11, a backup power supply unit 12, a configuration information holding memory 13, and a control unit 14. Each of the packages 20 to 30 has closed circuit forming portions 21 to 31 for enabling the package 10 to detect mounting changes during power-off, which will be described later in detail. This closed circuit forming unit 21 to
31 can be configured in advance by a printed wiring or the like in each package. Package 20 on the backboard section 40
Wirings 41 for connecting the closed circuit forming parts 21 to 31 of 30 to the package 10 are provided.

The packages 10 to 30 manage the configuration information in the configuration information holding memory 13 and determine the system configuration of the control device of the exchange, and when the mounting state is changed while the power is off or the system is exchanged. Influences the condition of system configuration. The mounting change detection unit 11 is the backboard unit 4
Package 20 to Package 3 through 0 wiring 41
It is connected to 0 and forms a closed circuit to monitor mounting changes. The mounting change detection unit 11 and the configuration information holding memory 13 are connected to the backup power supply unit 12, and each can hold the configuration information and monitor the mounting change even when the power is turned off. When at least one of the packages 10 to 30 is removed from the backboard unit 40 when the power is turned off, the mounting change detecting unit 11 detects and holds the mounting change by cutting the current loop or the like.
After that, when the power is turned on again (at the time of restoration), the control unit 14 confirms the state of the mounting change detection unit 11, and if there is no mounting change while the power is off, it refers to the contents of the configuration information holding memory 13 The configuration is decided and the exchange restart processing is performed. On the other hand, if there is a mounting change while the power is off, the configuration information holding memory 13 is initialized, and the system configuration is initialized to restart the exchange.

[0007]

As described above, according to the present invention, the mounting change detecting section of the first package is connected to the plurality of second packages through the backboard section to form a closed circuit, and the mounting change of each package is detected. The mounting change detection unit and the configuration information holding memory are connected to the backup power supply unit to hold the configuration information and monitor the mounting change even when the power is turned off. Since the package mounting change related to the system configuration can be monitored even when the power is turned off, if the mounting change occurs in any package while the power is turned off, the maintenance procedure will not be complicated and the system such as a switch can be operated normally. I can resume.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

[Explanation of symbols]

 10 package 11 mounting change detection unit 12 backup power supply unit 13 configuration information holding memory 14 control unit 20 package 30 package 40 backboard unit

Claims (2)

[Claims] 1. A first package and a plurality of second packages respectively provided for respective functions of the control device,
A backboard unit for connecting the first package and the second package when the first and second packages are mounted, and the first package includes a mounting change detection unit and a backup power supply unit. And a configuration information holding memory and a control unit, the first and second packages manage configuration information indicating a system configuration of the control device by the configuration information holding memory, and the mounting change detection unit includes the back-up device. A closed circuit is configured for the second package through the board unit to monitor a mounting change, and the mounting change detection unit and the configuration information holding memory are connected to the backup power supply unit, and the power supply is cut off. The mounting change detection unit can monitor mounting changes of the first and second packages and can retain the configuration information, and the mounting change detection unit can be configured to detect the mounting changes of the first and second packages. When at least one is removed from the backboard unit, this change is detected and held, and the control unit confirms the state of the mounting change detection unit when the power is turned on again, and if there is no mounting change during power off, The system configuration is determined by referring to the contents of the configuration information holding memory and restart processing is performed. If there is a mounting change during power off, the configuration information holding memory is initialized, and the system configuration is initialized and restart processing is performed. A control device having a package mounting change monitoring function characterized by performing the following. 2. The package mounting change monitoring function according to claim 1, wherein the second package has a wiring for forming a closed circuit with respect to the mounting change detection unit through the backboard unit. Control device having.