JPS61136344A - Control bus checking system - Google Patents

Abstract

PURPOSE:To read a fault on a bidirectional bus path by checking a value of a data field by a common device number provided to an individual bidirectional interface part, and sending back the result of the check by an individual answer signal. CONSTITUTION:A control signal is sent to a switch 2c by an individual device number through control buses 4a-4c from a central control device 1, and when a data error is generated in the control bus 4b, data of a data field of a control signal is checked in a control bus interface part 3c, and an answer signal of a fault is sent back to the device 1. Subsequently, when the device 1 sends a control signal for checking data by a common device number to each control bus interface part 3a-3c, the interface parts 3a-3c check the data, and sends back an individual answer signal of normal and fault to the device 1. In this way, the device 1 can read a fault of a control bus on a control bus path extending to the interface part 3c from the individual answer signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control bus check system in communication switching circuit networks, information processing devices, and the like.

[Conventional technology]

Conventionally, this basic control bus check method assigns an individual device number to the bidirectional bus interface section of each peripheral device, and validates the received data field only when it matches the device number. The method was to add the results of the check in the data check section to the anti-signal and send it back.

[Problems to be solved]

In the conventional control bus check method as described above, failures in the bidirectional bus interface of peripheral devices that receive control numbers from the central controller can be detected by matching the device numbers; There is a problem in that failures on the bidirectional bus path leading to the X-direction bus interface of the peripheral device cannot be detected.

The present invention solves the above-mentioned problems and provides a control bus check method that can detect faults on the bidirectional bus path up to the bidirectional bus interface section of the peripheral device receiving the control signal. The purpose is to

[Means for solving problems]

The configuration of the control bus check method according to the present invention to achieve the above object of the present invention is such that a plurality of peripheral devices receiving control signals from a central control device have a device number field,
An individual device number is assigned to each bidirectional bus interface of a peripheral device that is linked by a bidirectional bus information line having a data field, a control signal field, and an unloaded signal field and returns an answer signal. In the control bus check method, a common device number is assigned to each bidirectional interface section, and each bidirectional interface section receives the common device number, checks the value of the data field, and responds to the individual answer signal. This is done by sending back the check results.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a block diagram showing an embodiment of the control path check method according to the present invention.

Misfire F! The control path check method according to AK includes switches (4) 2 & ,
Switch Q3) 2b, switch (C) 2c, control bus interface section (A) 3a, %lJ control bus/tough ace m (B) 3b, control bus interface section (Q
Consists of 3 c.

The present invention configured as described above transmits a control signal from the central controller to the system inch (Q2c) via the control buses 4a, 4b, and 4c according to the individual device number Ne.
When a data error occurs on the control bus 4b, the control bus interface unit (Q3c) checks the data in the data field of the control signal, and sends an answer signal for the failure to the central control unit l. Send it back.

Next, the central control unit 1 that received the anti-signal sends a control signal for data checking to each control bus interface unit 3a, 3b, and 3cK using the common device and bus number.
Each of the control path interface sections 3a, 3b, and 3c checks the data in the data field, and sends a signal indicating that the control bus interface section (A) 3a is normal, and the control bus interface section CB) 3b, (Q3c) is faulty. is returned to the central control device l, and the central control device l, together with an answer signal to the control signal based on the former individual device number Nc, indicates that there is a failure in the control bus interface unit (B) 3b, and that the control bus interface unit (Q3 c disorder or
It is interpreted as a failure of control buses 4b and 4c.

With the above configuration, the control bus interface section (
It is possible to read the control bus 4b failure on the control bus route up to Q3c.

〔Effect of the invention〕

As explained above, according to the control bus check method according to the present invention, in addition to individual device numbers, a common device number is assigned to each bidirectional bus interface unit,
Upon receiving the common device number, each bidirectional bus interface unit checks the value of the data field and returns the check result in an individual answer signal, thereby allowing the peripheral device receiving the control signal to check the value of the data field. This has two effects: it is possible to read faults on the bidirectional bus route up to the bidirectional bus interface section.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a control path check method according to the present invention. l...Central control unit 2a...Switch prisoner 2b.
...Switch CB) 2c...Switch (G13a...
・Control bus interface section (4) 3b...flit
l Control bus interface section Q3) 3c... Control bus interface section (6) 4a, 4b, 4cm control path

Claims (1)

[Claims] A plurality of peripheral devices receiving control signals from a central controller are linked by a bidirectional bus information line having a device number field, a data field, a control signal field, and an answer signal field, and the respective bidirectional bus interfaces of the peripheral devices In the control bus check method in which a common device number is assigned to each bidirectional interface section, and each bidirectional interface section receives the common device number, A control bus check method that is characterized by checking the value of a data field using an individual answer signal, and returning the check result using an individual answer signal.