JPH03263111A - Serial bus interface power source control system - Google Patents

Abstract

PURPOSE:To prevent a long time from being required for completing a power source disconnection as a system by constituting the system so that plural power sources can be disconnected successively at every group. CONSTITUTION:To a power source controller 1, a power source 2 for setting sequential data (A) and physical address data (#1), a power source 3 for setting sequential data (B) and physical address data (#2), a power source 4 for setting sequential data (A) and physical address data (#3), and a power source 5 for setting sequential data (B) and physical address data (#4) are connected. The power source controller 1 reads in and stores the sequential data and the physical data set to plural power sources by an initializing operation. Accordingly, by a power source disconnecting instruction to plural power sources, the power source sequential disconnection can be executed at every voltage classification. In such a way, the power source disconnection to all the power sources can be executed in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a serial bus interface power control system.

[Conventional technology]

Conventionally, in this type of serial bus interface power supply control method, a power-off command for multiple power supplies is
Physical address data that is individually set for each power supply is sent in advance in a command, and the power supply that matches the physical address data included in the command indicates to the power supply control device that the command has been successfully received. “AC”
The power control device responds with “ACK” command.
When the command is received, the physical address data for the next power source following the physical address data is included in the power cut command and transmitted, and the device waits until it receives an "ACK" command from the matching power source.

Upon receiving the "ACK" command, it transmits a power-off command including the next physical address data.

The power supply control device repeats these operations until it transmits data to all power supplies.

Thereafter, the power control device receives the power-off completion command and recognizes the completion of power-off.

If there is a power supply for which a power-off completion command is not sent after a certain period of time, the power supply control device considers that power supply to be in failure, and executes processing related to the occurrence of the failure.

[Problem to be solved by the invention]

In the conventional power supply control method described above, individual physical addresses are sent to multiple power supplies, and after receiving an "ACK" command from a power supply with a matching physical address, the next command is sent. Because this operation is repeated, it takes a lot of time to complete power-off as a system.Furthermore, since power-off instructions are given to each power supply individually,
There is a drawback that it is not possible to simultaneously turn off a plurality of power supplies for each voltage type, and that it is impossible to turn off power supplies for each voltage type in sequence.

[Means to solve the problem]

In the power control method of the present invention, physical address data and order data are individually set for multiple power supplies, and a power cut command sent from the power control device is composed of a control code representing a power cut instruction and order data. However, the power-off completion data transmitted from the power supply is composed of a code indicating the completion of power-off and physical address data. During an initialization operation, the power supply control device reads and stores physical address data and order data individually from a plurality of power supplies. The power control device transmits power-off commands in accordance with a predetermined order of power-off. The power supply that has set the order data that matches the received power-off command executes the power-off operation and transmits power-off completion data.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a communication procedure diagram of an embodiment of the present invention.

The power supply control device 1 includes a power supply 2 in which order data (A) and physical address data (#1) are set, and order data (B).
and the power supply 3 where the physical address data (#2) is set, the power supply 4 where the order data (A) and the physical address data (#3) are set, and the power supply 4 where the order data (B) and the physical address data (#3) are set.
#4) is connected to the power supply 5.

In the initialization operation, the power supply control device 1 reads and stores order data and physical address data set for a plurality of power supplies.

A disconnection (A) 10 is a power-off command composed of a control code indicating a power-off instruction and sequence data (A), and a disconnection (B) 11 is a power-off command that includes sequence data (B). It is a command.

The disconnection (B) 11 is transmitted T seconds after the disconnection (A) 10 is transmitted.

When the disconnection (A) 10 is transmitted, the power supplies 2 and 4 that have set the order data (A) execute a power-off operation after determining that the order data (A) matches the order data (A).

At this time, since the order data (B) has been set for the power supplies 3 and 4, it is determined that the power supplies are disconnected (A>10 does not match), and no operation is performed.

Here, the communication between the power supply control device and the power supply is carried out using electrical signals, optical signals, or radio waves, so it is fast.
Delays due to propagation time can be ignored.

Therefore, power supply 2 and power supply 4 can perform a power-off operation at the same time.

Disconnect (B,) 11 sends Disconnect (A) 10 and then T
Send in seconds. Power supply 2 and power supply 4 are disconnected (B) 1
Even if 1 is received, it is determined that the order data do not match, and no action is taken.

When the power supply 3 and the power supply 5 receive the disconnection (B) 11,
It is determined that the order data match, and a power-off operation is executed.

Therefore, the power supplies 3 and 5 are powered off T seconds after the power supplies 2 and 4 are powered off.

When the power supply 2-5 completes power-off, it transmits power-off completion data including physical address data set individually for each power supply 2-5 to the power supply control device 1.

Completion (#1) 12 is power-off completion data composed of physical address data (#1) and a code indicating completion of power-off.

Similarly, completion (#2) 13 is the physical address data (#2).
Completion (#3) 14 includes physical address data (#3), and completion (#4) 15 includes physical address data (#4).

The power supply control device recognizes that the power supply has been successfully cut off by receiving the power supply cutoff completion data of the power supply 2-5.

〔Effect of the invention〕

As explained above, in the present invention, physical address data and sequence data are individually set for a plurality of power supplies, and a power-off command sent from a power supply control device is based on a control code representing a power-off instruction and sequence data. The power-off completion data configured and sent from the power supply consists of a code indicating the completion of power-off and physical address data, and the power supply control device uses physical addresses set individually for multiple power supplies during the initialization operation. The power supply reads and stores the data and order data, sends a power-off command according to the predetermined order of power-off, and when the power supply receives the power-off command, executes the power-off operation if it determines that the order data matches. Then, by responding with power-off completion data, it is possible to issue power-off instructions to multiple power supplies in order of each voltage type, and it is also possible to execute power-off instructions for all power supplies in a short time. This has the effect of making it possible.

[Brief explanation of drawings]

FIG. 1 is a communication procedure diagram showing an embodiment of the present invention. 1... Power supply control device, 2-5... Power supply, 10-11
... Power off command, 12-15... Power off completion data.

Claims (1)

[Claims] In a method that uses a serial bus interface to implement power control such as power on/off/abnormality processing used in information processing equipment, etc., physical address data and power-off order data (hereinafter referred to as (sequence data) is set, the power is turned on/off/
When a power supply control device that performs abnormality processing performs an initialization operation, the power supply control device reads and stores the physical address data and order data from the power supply, and the power supply control device sends a power-off command to a plurality of power supplies. including the order data as data constituting a command and transmitting it,
The power supply that receives the power-off command checks the order data set for each of the plurality of power supplies, and only those power supplies that match performs the power-off operation according to the instructions of the command, and as a result, the plurality of power supplies are sequentially powered off for each group. When the physical address data is included in the data in which the power supplies respond to the power supply control device to indicate the completion of the power supply cutoff operation, the power supply control device recognizes the completion of the power supply cutoff operations for all the power supplies. Serial bus interface power control method.