JPS6058746A - Ring automatic confirming system - Google Patents

Abstract

PURPOSE:To allow the system to be utilized effectively for earlier restoration when a fault occurs in a ring or a ring station by setting the own address to a transmission station address (SA), transmitting the address to a downstream ring monitor device while giving a test frame, allowing the downstream ring monitor device to copy the SA and to circulate the ring so to confirm automatically the state of the ring. CONSTITUTION:The ring monitor device A sets a sub-code (SC) as shown in a token frame (1), all ''0'' to an object station address (DA) and an address A to the SA. The token frame (1) like this is transmitted to the ring monitor device B at the downstream through a ring and since the DA is not coincident, the address A of the SA is copied, an address recognition flag (A) corresponding to the final flag C is set to ''1'' and fed to an object ring monitor device A. Thus, the address of the ring monitor device at a peceding upstream is known in this way and the confirmation of the normality of the ring is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to an automatic confirmation system for an automatic configuration control device in a ring communication system.

(2) Conventional technology and problems In recent years, factory automation (FA).

From laboratory automation (L people) to office automation (OA), development is progressing to organically link multiple processors and multiple terminals to decentralize processing and facilitate communications. .

One of the things that is attracting attention is the local area communication network (
LAN). There are two types of ring communication systems belonging to this type. 's1 connects the ring stations 11111#Im so that the data flow is in a ring shape, as shown in FIG.
JB) 21y2se2s. Second, as shown in FIG. 2, and Lld ring station 11.1! bypass switch (2) 5x+5* is the automatic configuration control device 3 having the ring monitor mechanism 41! Multi-controlled, ring station 1s
Bypass switch 53 of automatic configuration control device 3! having ring monitor mechanism 4z! These automatic configuration control devices 41e4z are connected to the main line 6 in a sill-like manner. Then, this ring-shaped token frame is sent and monitored by the shilling monitor mechanism 41slh.

In the former method shown in Fig. 1, the ring station 11゜1
*, If Im goes down due to a failure without bypassing itself, the entire ring will lose its functionality. In the latter scheme of FIG. 2, ring functionality can be maintained by the automatic configuration controller 3x*5g failing and bypassing the nine shilling station 11.1g+in. However, the automatic configuration control device 51 #5
If a failure occurs in 1, the ring will go down in the same way.

Moreover, in both cases, it was not possible to easily confirm the operation of the ring.

(3) Object of the Invention (3) An object of the present invention is to provide an automatic next ring confirmation method that automatically and effectively checks the operation of an automatic configuration control device on a ring in a ring communication system.

(4) Structure of the Invention In order to achieve the above object, the automatic ring confirmation method of the present invention includes a single ring station or a plurality of ring stations, a plurality of automatic configuration control devices that control the configuration of the plurality of ring stations, and a plurality of automatic configuration control devices that control the configuration of the plurality of ring stations. In the next ring communication system, which is composed of a ring-shaped main line connecting automatic configuration control devices and a branch line connecting the automatic configuration control device and the ring station,
Only the automatic configuration control device has a frame address that can be received, and the upstream (sending side) automatic configuration control device in the information transmission direction of the main line uses the station address set for itself to perform downstream automatic configuration control. The downstream automatic configuration controller has means for storing the station address of the upstream automatic configuration controller, and the automatic configuration controller transmits and receives test frames as necessary (4). ), the operation of the automatic configuration control device within the ring can be automatically confirmed.

(5) Embodiments of the Invention In the present invention, an automatic configuration control device having a motor mechanism shown in FIG. This is an improved control method.

FIG. 6 shows an example of a token frame sent from each ring station to the ring. As shown in the figure, the contents include a synchronization flag (g), a token, and a frame type code in the front stage, and the main parts include a destination station address (DA), a sending station address (f9A), and data. Error check bit (FO
8), Synchronization flag (Takumi).

Address mwk flag etc. (4) are set. This token frame is sent out on the link from the ring station, is detected synchronously at each ring station, and the DA
If they match, reception is performed.

(5) In this case, if the destination station address on the receiving side is not known, no data can be transmitted.

In the case of a ring station controlled by an automatic configuration control device, the address is set within the ring monitor mechanism, and only those stations that have been set can send and receive data. Using this principle, you can set 9 addresses that only the ring monitor mechanism can understand, and 8
By setting one's own address in A, sending it to the downstream ring monitor mechanism to have eight people covey, and spinning this token frame around the ring, it is possible to check the operation of each station.

FIG. 4 is an explanatory diagram of the configuration of an embodiment of the present invention.

The same figure shows the ring monitor a llt 4t p 4 in Fig. 2.
s is extracted and shown.

The token frame shown in FIG. 3 is partially modified, for example, by inserting a subcode (SO) after the data of 9 people and 8 people, indicating that the token frame was sent from upstream for Te2. Easy ring monitor m1ll 41,4
If m is represented by A and B, the ring monitor machine (6) #lA, as shown by the token frame ■, sets the SC and all 11011 for 9 people.
and set address A to 8 people. The final flag 0 in this case is the final address recognition flag (A) shown in FIG. 3 for each ring monitor mechanism. When transmitting A, set 0#, and when copying B, set "1". Send such a token frame ■ to the downstream ring monitor mechanism B through the ring, and since this DA does not match, copy 8 addressers, and change the address recognition flag (A) corresponding to the final flag O to 11m. and send it to the desired ring monitor organization. Accordingly, a test frame TF may be provided in the ring monitor mechanism A and sent. Note that even if another ring monitor mechanism is present after (downstream) the ring monitor mechanism A and the ring monitor mechanism B, it is recognized that 11'' is set in the final flag C and the token frame is passed through as is. In the ring monitor mechanism A, if all ``0'' of the nine people match, the test is completed and the operation of the ring station is confirmed.

(7)'Reply this result to ring monitor @B. Next, as shown in token frame ■, send address B to DA,
The addressee is set in 8A, and 8C or TF is sent to the ring monitor mechanism B again as a test response frame.

In this way, the ring monitor mechanism enters an address that only it can understand into the DA and sends it to the downstream ring monitor mechanism with a test subcode attached to it. The address of the ring monitor mechanism can be known and the normality of the ring can be confirmed.

FIG. 5 is a detailed explanatory diagram of the ring monitor mechanism.

At h in the figure, the aforementioned token frame is input from the input line of the ring to the clock recovery circuit 12 via the receiver (RV) 11, and is separated into read data and clock.The read data (RD) is sent to the OR circuit 16. Then, the clock advances to three shift registers 15t*15zs13m]
It's packed. shift register 131*13gm13s
For K, the portion excluding the tokens ODA, 8 people, and the remaining people is retained.

(8) The contents of the shift register 15t are compared with the contents of the setting circuit 17 by the coincidence detection circuit 18. The setting circuit 17 is set with an address set by the ring monitor mechanism itself, for example, the address of the ring station under control, or an arbitrary address for the ring monitor mechanism.

That is, when nine people match this address, a match signal from the match detection circuit 18 is given to the λ bit generation circuit 15, and the A bit is sent to the shift register 1 via the OR circuit 16.
63 as the final flag.

t+ shift register 16 contents of 8 people in snow register 20
Copy it to

This period is controlled by the output of an AND gate 19 which receives an inverted signal of the output of read data (D) and a match signal. These six shift registers 131-1
The driver (D
V) 14 to the output line.

(6) As described in detail, according to the present invention, an address that only the ring monitor mechanism can understand is sent to nine people in the token frame.
Set its own address to 8A, and (9) send it to the downstream ring monitor mechanism with a test frame attached. The downstream ring monitor mechanism can automatically check the status of the ring when the SA is turned and the ring is rotated, and this automatic check function can also be used in the event of a failure in the ring or ring station. This can be effectively used for early recovery.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of the configuration of the conventional example, FIG. 3 is an explanatory diagram of the token frame, FIG. 4 is an explanatory diagram of the configuration of the embodiment of the present invention, and FIG. This is a detailed explanatory diagram of the main parts. In the diagram, 11, 11-1s are ring stations, 3
1m3g is an automatic mechanism control device, 41t4itj:! 6 indicates a main trunk line. Patent applicant Fujitsu Ltd. sub-agent Patent attorney 1) Yoshishige Saka (10)

Claims (1)

[Scope of Claims] A single or plural ring stations, a plurality of automatic configuration control devices that perform configuration control of the plurality of ring stations, a ring-shaped main line connecting the automatic configuration control devices, and the automatic configuration control devices. In a ring communication system configured by a branch line connecting a control device and the ring station, a frame address that can be received only by the automatic configuration control device is provided, and the automatic configuration control device upstream in the information transmission direction of the main line (transmission 11g) has means for transmitting the station address set for itself to one downstream automatic configuration controller, and the downstream automatic configuration controller has means for storing the station address of the upstream automatic configuration controller. (1) The automatic configuration control device is capable of automatically confirming the operation of the automatic configuration control device within the ring by transmitting and receiving test frames with the automatic configuration control device as necessary. automatic confirmation method.