JPS6373318A - Checking system for connector for cable - Google Patents

Abstract

PURPOSE:To detect the incomplete connection of a cable connecting connector with a sure and simplified method, by detecting a transmitted signal by applying the logic operation of the signal with an internal signal. CONSTITUTION:Logic operation means 5 and 6 which perform logic operation by inputting earth signals transmitted through the prescribed pins of the signal lines of the cable connecting connectors 3 and 4, and signals of the prescribed pins for exclusive grounding for the cable connecting connectors 4 and 3, are provided. And by detecting the signal levels of both pins by the arithmetic operation 5 and 6, it is possible to detect the incomplete connection of the cable connection connectors 3 and 4 at respective cable connecting connector side 3 or 4, with the sure and simplified method.

Description

[Detailed Description of the Invention] [Summary] A cable disconnection check method for cable connection connectors, which is used to check for cable disconnections between devices that are facing each other and are connected by a cable via the cable connection connector. Whereas multiple signal lines were used in the previous system, by configuring the system to detect signals transmitted through a minimum number of signal lines by performing logical operations with internal signals, cable connectors can now be used. It becomes possible to detect connection defects reliably and in a simple manner.

[Industrial application field]

The present invention relates to a cable disconnection checking method for a cable connection connector.

For example, connections between functional blocks within a data processing device and connections between devices constituting a data processing system are generally made via cable connectors.

These cable connectors are intended to be used when connected correctly to the Kikiri, but due to carelessness on the part of the operator, they may be connected diagonally or the device may not be connected properly. For example, when the device is initially started up, it may be detected as malfunctioning.

In such a case, it takes a considerable amount of time to search for it, so some devices use a plurality of signal lines to check the connection state of the cable connector to see if the cable is disconnected.

It is desired to put into practical use a method that can easily detect such a cable disconnection state using a simple method.

[Conventional technology]

FIG. 4 is a block diagram illustrating a conventional example, and FIG. 5 is a diagram illustrating a structural example of a cable connection connector.

For example, a cable connecting connector 3.4 (in this example, a connector having 50 pins) used for a magnetic storage device, etc. is a device side connector 3a (4
a) and a cable side connector 3b (4b).

Odd number side pins 1, 3 . of the device side connector 3a (4a).・・・
・.

49 is for the signal line, and the even number side pins 2, 4 . ..., 50
are all configured to be grounded.

On the other hand, the cable side connector 3b (4b) also has odd number side pins 1, 3. . . , 49 is for the signal line, and the even number side pins 2, 4 . . . , 50 are all connected in the same manner.

As an example of a method for checking cable disconnection in the cable connection connector 3 (4) as described above, as shown in FIG.
Pin, 49 pin and opponent bag! The 1st and 49th pins of the cable connection connector 3 of one example are connected.

In this state, for example, the 1st pin of the cable connection connector 4 on the own device side 2 is grounded, and the 49th pin is connected to, for example, a signal receiving circuit (hereinafter referred to as RV) 7 provided in the own device side 2.

At this time, the 1st and 49th pins of the cable connection connector 3 of the other device 1 are looped with a termination box (not shown), for example, and the 1st pin of the cable connection connector 4 of the own device side 2 is looped. The configuration is such that the ground is folded back and returned to the 49th pin of the cable connection connector 4 on the device side 2.

I in own device side 2? V7 is cable connection connector 3
．． 4 are connected normally, the ground of the 1st pin of the cable connection connector 4 on the own device side 2 is detected, and it is determined that the connection is OK.

On the other hand, if one of the smaller numbered pins or the older numbered pins of the cable connection connector 3.4 is improperly connected, it will be impossible for the RV7 to detect the ground of the 1st pin of the cable connection connector 4. Therefore, it is detected as a connection failure.

[Problem that the invention seeks to solve]

When checking for cable disconnection using the above method, it is necessary to prepare two signal lines and, for example, a termination box to loop the signal line of the other device.

[Means for solving problems]

FIG. 1 shows a detailed illustration of the invention.゛First
As shown in the figure, the ground signal transmitted via the predetermined pin for the signal line of the cable connection connector 3゜4 and the signal of the predetermined pin dedicated to the ground inside the cable connection connector 4゜3 are connected. A cable disconnection check system is configured by providing logic operation means (logic operation units) 5 and 6 for inputting and performing logical operations.

[Effect]

By configuring the signal transmitted using the minimum number of signal lines to be detected by performing a logical operation on the internal signal using the logic operation means (logic operation unit) 5.6, the cable connection connector can be detected. It becomes possible to detect connection defects in cables 3 and 4 reliably and in a simple manner on the respective cable connection connectors 3 and 4.

〔Example〕

The gist of the present invention will be specifically explained below with reference to embodiments shown in FIGS. 2 and 3.

FIG. 2 is a block diagram for explaining the present invention in detail, and FIG. 3 is a diagram for explaining the connection state of the connector in the embodiment of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

The connection status of cable connector 3.4 in this example is as follows:
As shown in Fig. 3, the cable side connectors 3b and 4b are connected in the same way as explained in Fig. 5, and the device side connectors 3a and 4a are connected by using the 2nd pin for the signal line and the other pins. All even numbered pins are grounded as in Figure 5.

The logic operation unit 5.6 in this embodiment includes a driver (hereinafter referred to as Dν) 51 which inputs a signal from pin 2 (earth signal) and a CTU signal, which is an exclusive signal, and sends out a check signal. .61, pin 2 signal and 49
Receivers (hereinafter referred to as 1?V) 52.53 and 62.63 that receive the signal of pin number 52, 53 and 6
2.63 and an AND circuit (hereinafter referred to as AND) 54 and 64 for calculating the logical product of the received signals.

Now, set the CTU signal of DV61 on the device 2 side to “0”, and set the CTU signal of the DV61 on the device 2 side to “0”,
When the CTU signal of the DV51 on the side is set to "1" by a circuit not shown, the DV51 puts the 2nd pin and the 49th pin into a loop state, and sends the ground signal of the 2nd pin to the device 2 side via the 49th pin. Send.

On the other hand, the DV61 makes the 2nd pin and the 49th pin non-conductive, and the ground signal transferred to the 49th pin is received by the RV63.

Also, the RV62 receives the ground signal on pin 2, and the RV
The signal (7-s) received by 62 and RV63 is AND6
4, a cable check OK signal is sent to a circuit (not shown), and the cable disconnection check result is confirmed on a display or the like.

In this state, if there is a connection defect at the point (a), for example, the RV63 will not receive the ground signal, and the logical product of AND64 will result in a condition mismatch, and the cable check fault signal will be displayed as shown in the diagram. is sent to a circuit that does not have
Cable disconnection is confirmed.

Next, by setting the CTtl signal of the DV61 on the device 2 side to "1" and the CTU signal of the DV51 on the device 1 side to "O", it is possible to check for cable disconnection on the device 1 side in the same manner as described above.

If the logic operation units 5, 6, etc. described above are installed in the device 1゜2 in advance, there is no need to connect a termination box (not shown), etc., and the signal line with the minimum ratio can be used, for example. When power is applied to the devices 1 and 2, it is possible to automatically check the status of the cable connection connectors 3 and 4.

〔Effect of the invention〕

According to the present invention as described above, it is possible to reliably detect connection defects in cable connectors using a simple method.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the present invention in detail, FIG. 2 is a block diagram explaining the invention in detail, FIG. 3 is a diagram explaining the connection status of the connector in the embodiment of the present invention, and FIG. FIG. 5 is a block diagram illustrating a conventional example, and FIG. 5 is a diagram illustrating a structural example of a cable connection connector. In the figure, 1.2 is the device, 3.4 is the cable connector, 3a, 4a are the cable side connectors, 3b, 4b are the device side connectors, 5.6 is the logic operation unit (logic operation means), 7.52, 53
, 62.63 is RV, 51.61 is DV. 54.64 indicates AND, respectively. Cave Solo L 4 Refuse

Claims (1)

[Claims] A device side connector (3a, 4a) that is connected to the device side (1, 2) with multiple pins, and a cable that is connected with a cable for connecting to another device with multiple pins. Predetermined pins of the cable side connectors (3b, 4b) are all connected as a ground-only line, and the pins in the device-side connectors (3a, 4a) are individually connected for grounding. In the cable connection connectors (3, 4) configured to be distributed for signal lines, a ground signal transmitted through a predetermined pin for the signal line of the cable connection connectors (3, 4), and A logic operation means (5, 6) is provided for inputting a signal of a predetermined pin among the grounding pins in the cable connection connector (4, 3) and performing a logic operation, and the logic operation means (5, 6)
A cable disconnection check method that detects the signal level of both pins.