JPS6094560A - Station integrating method - Google Patents

Abstract

PURPOSE:To ensure automatic integration by allowing a loopback connecting station to transmit a line rearrangement request message in a duplicated loop dataway system. CONSTITUTION:When a station 204 cannot keep the integrating state to the system, loopback connection is conducted at adjacent stations 203, 205 of the station 204 by the loopback control of a supervisory station 201, resulting that the station 204 is separated from the system. When the station 204 is restored in this state and integrated into the system, the station 204 checks the transmission line for the loopback connection station 203 by itself to decide the propriety of the integration to the system and the loopback connection station 203 transmits the line rearrangement request message to the supervisory station 201 from the result of discrimination in place of the disconnected station 204.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a station integration method for incorporating a station separated from the system into the system in a duplex loop data way system.

[Technical background of the invention and its problems]

A so-called dataway system, in which multiple computers and terminals are connected in a root-like manner under multiple data transmission stations, generally has a double-loop configuration for the purpose of improving reliability. In such a system, a so-called dual loop dataway system, for example, a monitoring station is Through loopback control, loopback connections (by line connection switching) are established at adjacent upstream and downstream stations to ensure a transmission path.

In this persimmon system, there are cases where it is desired to incorporate a station separated from the system (transmission line) into the system (transmission line). In order to incorporate this station, it is necessary to organize a line by a monitoring station. In order for the monitoring station to reorganize the line, it is necessary to request the monitoring station to that effect. However, in the conventional system, it is impossible to request the monitoring station from the disconnection station to reorganize the line, and it is impossible to automatically incorporate the disconnection station into the system (transmission i2[t). It was difficult.

[Object of the Invention] This invention was made in view of the above circumstances, and its purpose is to automatically incorporate a stage (97111 station) separated from the system into the system in a duplex loop data way system. The object of the present invention is to provide a method for installing a station that can be carried out reliably.

[Summary of the invention]

In this invention, at the loopback connection station where the loopback connection is made by the loopback control of the monitoring station, a return loop is formed as a result of this loopback connection to the disconnection station that is disconnected from the system. be done. The detachment station receives its own transmitted data by data return using this return loop, and determines whether or not it can be incorporated into the system depending on whether or not the detachment station can receive the data correctly. The detachment station sends a predetermined line reorganization watering pattern signal to the return loop (by re-determination).

When the loopback connection station determines that the pattern signal on the return loop is a line reorganization request pattern signal, it sends a line reorganization request message from the loopback connection side to the monitoring station on behalf of the disconnection station. . As a result, the line is reorganized by the monitoring station and the disconnection station is incorporated into the system.

[Embodiments of the invention]

FIG. 1 shows the system configuration of a duplex loop data way system according to an embodiment of this invention. In the figure, the double Rougue transmission line indicated by the symbol 1o is a line (transmission line,
cable) consists of 11° and 12°. For example, six data transmission stations 201 are connected to the double loop transmission line 1o.
~206 are connected in a loop. In this embodiment, station 201 is used as a monitoring station that monitors the entire system, and stages 201 to 206
is used as a general station. Note that computers and terminals connected to stations 20° to 206 are omitted.

Fig. 2 shows the configuration of station 2 (11 (1 = 1 to 6)) - In this embodiment, the basic configuration of the monitoring station 201 and the goo ff stations 20. station 2.01 (1=
1 to 6), 301. 3ON is line 11.1
The input circuit 311s311 inputs the signal on the line 2, and the output circuit outputs the signal on the line 11°12. 32 is a pattern signal transmitting circuit, and 33 is a pattern signal receiving circuit. 34 is a (transmission) data transmission circuit, 35 is (
(reception) data reception circuit. 36 is line 11.12
(Input circuit 301e30*, output circuit 31 connected to
1.31 and transmitting circuit 32.34, receiving circuit 33.3
This is a connection circuit that performs connection switching with 5 under the control of a station control section 40, which will be described later.

Reference numeral 37 is a transmission pattern determination circuit for determining the transmission pattern signal, and reference numeral 38 is a reception pattern determination circuit for determining the pattern glaze type of reception No. 246 No. 246.

39 is a data input/output control circuit that controls the input of received data and the output of transmitted data; 40 is a station control section that controls the entire station 201; The station control section 40 has a convex v, a micro processor which forms the center of the flII section, a data transmission/reception buffer (none of which is shown), and the like.

Figure 3 shows the specific configuration of the transmission pattern determination circuit 37 shown in Figure 2. In the figure, 50 is an oscillator that oscillates and outputs the Gj signal of a predetermined frequency, and 51 is an oscillator that separates the output signal of the oscillator 5θ. This is a frequency dividing circuit that rotates and outputs a plurality of types of signals (pattern signals) each having a different frequency.The turn signal output from the frequency dividing circuit 51 includes a Te5t Request Patter signal indicating a line check.
n (hereinafter referred to as TRQ pattern) signal, Te5t End & Line Good indicating line good judgment
Pattern (hereinafter referred to as TE & LG pattern) signal and Te5t End &
Line 13ad Pattern (hereinafter referred to as TE
&LB pattern) signals.

Reference numeral 52 denotes a selection circuit that selects one of the plurality of types of no and turn signals output from the frequency dividing circuit 51; 53 a line driver that drives the selection output signal from the selection circuit 52; and 54.
is a command register that holds selection designation information that designates the Noreen signal that the selection circuit 52 should select. This selection designation information is given from the station control section 40 (a microprocessor, not shown).

FIG. 4 shows a specific configuration of the reception pattern determination circuit 38 shown in FIG. In the figure, reference numeral 60 is a line receiver, 61 is a sampling circuit that samples the reception/lean signal received by the 2-in receiver 60, and 62 is a sampling clock circuit that outputs a sampling clock of a constant period to the sampling circuit 61.

A RAM 164 63 stores the sampling results of the sampling circuit 61 and is an address control circuit for the RAM 63. 65 is a RAM input/output control circuit, 66 is a RAM
This is a bus driver that drives data read from #3. Output data from the path driver 66 is given to the station control section 40 (a microprocessor, not shown).

Next, the operation of one embodiment of the present invention will be explained with reference to FIGS. 5 to 9. For example, assume that station 204 is unable to maintain its state of being incorporated into the system due to station power being turned off for maintenance (or due to a failure of station 204). In this case, monitoring station 20. Due to the loopback control of station 2
04's It! Ii contact station 203.5th at 20°
A routing connection is made as shown in the figure, resulting in station 20. is separated from the system (transmission line 10). In this state, the station (separation station) 204 is maintained and inspected (or a fault is repaired, etc.), and then the vending station 204 is incorporated into the system. First, station 204'k
n is turned on. As a result, the station 204 becomes the line connection circuit shown in FIG. 32 is connected to the input terminal of the output circuit 31, and the output terminal of the input circuit 30 is connected to the input terminal of the receiving circuit 33.On the other hand, the station 204 is connected to the adjacent upstream station Roots pack connection station -) 20m is
The operation of the line connection circuit 36 during the loopback connection results in the line connection form shown in FIG. 70. That is, station 2'0. Here, Rougpack connection is performed by connecting the output terminal of the input circuit 302 and the input terminal of the receiving circuit 350, and connecting the output terminal of the transmitting circuit 34 and the input terminal of the output circuit 3, and also connects the output terminal of the input circuit 30m. Terminal and receiver (connection with input terminal of N circuit 33, transmission circuit 3
2 output terminal and output circuit 31. A connection is made to the input terminal of Note that the line connection form of the ha downstream station (loopback connection station) 20 of the station 204 is indicated by the reference numeral 30. in the description of the station 203 above. And code 30! , code 311 and code 31! I would like to be understood by replacing the words.

When the station 204 assumes the form shown in FIG. 6(,), the station 204 operates as shown in the flowchart of FIG. A KTRQ/# turn signal is sent and a timer (not shown) is started (step 81). This 'f fi Q shine turn signal is sent out as follows. First, the station control unit 40 (microprocessor therein) of the station 20s loads selection designation information designating the output of the TRQ pattern signal into the command register 54 (in the transmission turn determination circuit 37). The selection circuit N52 selects 'l', RQ, or J? from among the various 4-turn signals output from the frequency divider circuit 5. Select the turn number. This signal is guided to the transmission circuit 32 via the line driver 53 in the transmission no.9 turn determination circuit 37. The output terminal of the transmitting circuit 32 is the output circuit 3
The TRQ/G turn signal connected to the input terminal of 1 and thus led to the transmission circuit 32 is connected to the input terminal of the transmission circuit 3.
2. On the other hand, (loopback connection) station 20 is in the form shown in FIG. The pattern signal from the adjacent (downstream) station is constantly monitored (step 811).
. Then, the station 20s detects the 9TRQ and f-turn signals through this monitoring (step 51
2), and then transition to the line connection configuration shown in Figure 7(b).
The RQ pattern signal is routed back to the station shore 204 and a timer (not shown) is activated (step 513). The operations of steps 811 to 813 will be specifically explained below. In the state shown in FIG. 7(a), the pattern signal sent from the station 204 onto the circuit mxx is guided to the reception pattern determination circuit 38 via the input circuit SO1° reception circuit 33 of the station 203.

The reception no-f turn determining circuit 38 is provided with a 5-in receiver 60, and the pattern signal is guided to the sampling circuit 6 via the line receiver 6o. The sampling circuit 61 samples the sampling clock signal from the sampling clock circuit 62 and the above-mentioned turn signal at a constant period. This sampling result is
Address control circuit 64 and RAM output control circuit 65
I'L 7y is stored sequentially in RAM 6.9 according to the instructions of
o The data stored in the RAM 63, ie, the sampling result of the sampling clock circuit 62, corresponds to the frequency of the received pattern signal. Therefore, the station control unit 40 (microprocessor therein) reads the data stored in the RAM 63 through the path driver 66, and reads the pattern (
The uniqueness of m"3 can be added to the standard i'(, l(1). The determination at step 812 (TRQ, detection of a turn signal) is performed in this way.

When the station flilJ control unit 4o detects that the received no or turn signal is a TRQ pattern signal, it sends M! to the line connection circuit 36. J7 Instructs to take the form shown in Figure (b) and starts a timer. According to this instruction,
Output terminal of input @INr 301, output circuit 31. and the input terminal of the receiving circuit 33 are connected to each other, and the gloss turn signal from the line 11 is transmitted to the circuit Ii! l! It is turned back to the 12 side and guided to the receiver 4g circuit 33 as in the case of the form shown in FIG. 7(,).

The cough station 20.m is configured as shown in FIG. 7(b). 'f R
The Q a4 turn signal is transmitted via line 12 to station 20. guided by. After the station 204 executes the step S7 (see FIG. 8), the station 204 executes the steps 82 and 83.
It is then checked whether the pTRQ no sz turn signal is returned within a certain period of time. And station 20. When confirming that the TRQ pattern signal has returned within a certain period of time, the line connection configuration shown in FIG. 6(b), that is, the transmission circuit 34
The output terminal of and the input terminal of the output circuit 311 are connected,
Input circuit 30. The output terminal of the receiving circuit 35 is connected to the input terminal of the receiving circuit 35. That's it, station 2
04 can send data on line 1 and receive data on line 12. In this state,
Station 2o, f''1 sends test data onto line 1, and subsequently enters the receiver fiilJ of the test data (step 84).
The test data sent to the time shown in Figure 7(b)
The signal is looped back onto the multiline line 12 by the station 20s which is in the l connection mode. Station 20. rJ receives the test data returned at station 201 and determines whether it has been received correctly (Sutetsuno 55) 6
That is, station 20. receives the test data transmitted by itself (by the loopback function at station 20) and performs a data check. Accordingly, the station 204 determines the quality of the transmission line 10 (lines 11 and 12) (and also the quality of its own input/output circuit portion and the input/output circuit portion of the station 20.), that is, whether or not it can be incorporated into the system. You can judge for yourself.

If the test data is correctly received, the station 204 determines that the transmission line 10 is normal and transmits the data to the sixth station again.
It takes the form shown in figure (a). In this state, station 20
．． is on line 1 (from the transmission pattern determination circuit 37)
A TE&LG pattern signal is sent out (step 86).

On the other hand, if the test data is not received correctly, station 20. In this case, transmission line 10 is (station “4+
201) is determined to be abnormal. In this case, the station 204 is operated as shown in FIG.
), but unlike when determining normality, TE
&LB pattern signal is sent (step 87). Further, in this step S7, the adjacent downstream station 201
Line connection (specifically, the output terminal of the input circuit 30. and the receiving circuit 3:
Connection with the input terminal of I, the output terminal of the transmitting circuit 32 and the output circuit 31! (Connection with the input terminal) switching is also performed.

Thereafter, the same excitation f'' as described above is performed between the station 2 (7a c) and the adjacent downstream station 20s.

Station 20. Id, said Stella fS 13 (9th
(see figure), the result is the form t? shown in Figure 7(b). jA
I will continue to monitor the messages sent by station 2o4i> and others. In this monitoring, station 20. In steps 814 to 816, TFj&LG, turn signal, or TE&L is activated within a certain period of time.
It is determined whether the B/ or turn signal has been monitored. And station 20. is T within a certain time
When it is determined that the E&LG turn signal has been monitored, the line destined for the monitoring station 20 A composition request message is sent onto line 11 (step 517). When the monitoring station 201 receives the line reconfiguration request message from the station 203, it initiates a line reconfiguration request.
to go into. This indicates that the station 204 has been incorporated into the system. On the other hand, if the station 2os determines that the TEALB=turn signal has been monitored within a certain period of time, the station 2os receives the turn #i! from the station 204! The fact that the reorganization request has not been established is recorded internally, and the process returns to the original process (step 818).

In the above embodiment, the loopback connection station 2o s is 'l' from the disconnection L station 204.
By receiving the fl Q /f turn signal, the detachment station 20. The explanation was given as forming a return loop to loop/? A folded loop may be formed during the 7-way connection. In this case, the disconnection station 204 will perform the operation shown in FIG. 8 without being able to confirm whether the request from the station has been transmitted to the router connection station 2oB.

〔Effect of the invention〕

As described in detail above, according to the present invention, the disconnection station itself checks the transmission path with the loopback connection station to determine whether or not it can be incorporated into the system, and re-determines whether the disconnection station is to be incorporated into the system. At the request of the user, the loopback connecting station sends a line reorganization request message to the monitoring station on behalf of the disconnecting station.
Automatic integration of the separation station into the system is ensured. In addition, according to this issue, the transmission/reception of test data during the transmission path check is disconnected due to the above-mentioned built-in "n" judgment. Since the mother turn signal indicating a line reorganization request from the 111+ station to the loopback connection station can be transmitted using a transmission line, no special control line is required.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the system configuration of a 21-speed Rogue data way system according to an embodiment of the present invention, and FIG.
Figure 3 is a block diagram showing the configuration of the data transmission station shown in Figure 1, Figure 3 is a block diagram showing the configuration of the transmitting/4' turn determining circuit shown in Figure 2, and Figure 4 is the receiving block diagram shown in Figure 2. FIG. 5 is a block diagram showing the configuration of the pattern determination circuit. FIG. 5 is a diagram showing an example of the system state after Runo-Cook control of the system shown in FIG. 1. FIG. FIG. 7 is a diagram showing the line connection form of the same loopback connection station, FIG. 8 is a flowchart explaining the operation of the disconnection station, and FIG. 9 is a diagram explaining the operation of the loopback connection station. It is a flowchart. 10...Double Roug transmission line, 11.12...Line,
201-206...Data transmission station, 36.
...Line connection circuit, 32...Transmission pattern determination circuit,
38... Reception pattern determination circuit, 40... Station control unit. Tsumugi's agent Patent attorney Takehiko Suzue Figure 1 Figure 3 Figure 4 Figure 8 Figure 9

Claims (1)

[Claims] Equipped with a monitoring station and multiple general data transmission stations that are root-connected to a double loop transmission line consisting of a pair of lines, and loopback control by switching the line connection at a designated station based on loopback control of the monitoring station based on failure detection. In the duplex loop dataway system in which the connection is made, at the loop connection station where the loopback connection is made, the return loop to the disconnection station that is disconnected from the system by the loopback control is form,
In order to return data using this return loop, the disconnection station determines whether or not the station can be incorporated into the system, and depending on whether the station can be incorporated into the system, a predetermined line reorganization request pattern signal is sent to the return loop. In response to the line reorganization request pattern signal on the return loop, the loop pack connection station sends a message indicating a line reorganization request to the monitoring station, and controls the monitoring station based on this message. A method for incorporating a station, characterized in that line reorganization including incorporating the disconnected station into the system is performed.