JPS58100555A - Loop type data transmission controller - Google Patents

Abstract

PURPOSE:To simplify the hardware of a station other than a control station, by providing a control system for the constitution of both high efficiency of polling carrying system and the unified transmission line constituting of a control station fixing system is common. CONSTITUTION:A station ST1 is a control station, and ST2-ST4 are other stations. The ST1 transmits a transmission right acquiring permission signal POL, transmitted from the stations other than the ST1 after converting into a transmission right acquired signal RSV with no condition, the signal POL is transmitted in succession to the signal RSV, and when the signal POL transmitted from the station ST1 is returned to the ST1 as it is, the signal POL is again transmitted. The station receiving the signal RSV converted at the station ST1 is switched into the path mode. Further, a conventional POL monitor function is not required for the ST2-ST4, and the POL monitor function is provided only for the control station.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides data transmission and reception in loop transmission using a serial transmission path. b114 device.

Figure 1 shows the power of μ loop transmission. Stations 1, 2, 3.4 are connected to a transmission line 10a- in a loop.
Connected through iod.

A computer 5 and input/output devices 6 to 8 are connected to each station. This system assumes that data can be sent from any station to any station. In loop transmission, only one station can transmit at the same time, so before data transmission, first transmit 1! Sending to select only one of the requested stations! Priority control of morbidity is required.

The conventional method of Dredge City lJ@l will be explained in detail in column 1.

Send m Takayuki Nori. Send 1 at Station 7 Yon or 6D Suf-7 Yon! ! Sui captured samurai storehouse! 'F
A cunning game that sends out a signal that it is going to town. That is, the second
In the figure, stay 7/l is located downstream like two people.
Putter: yf in and out. PoL pattern &u8YNC pattern and POL to obtain the same sAk as shown in figure 43
Enter the special number 1 in the pattern. Stacy Ei 7
3 to send 1 word
Changed the 1-tokusho oT boar name to the gogogo. That is, P.O.
L putter/l-le SV Batano 1c. As shown in Figure 3, this putter 7 has a 5YNC pattern and an R8v pattern for synchronization. Station 3
In response to this signal, data is sent downstream as shown in 2B in the figure. As shown in FIG. 3, the data includes front and rear synchronization flags, IK destination address, control information, data contents, and error checking information. Even if station 4 requests a sending IIN, it is not possible to obtain a sending flit because it is in an R8v pattern.

In the background, 臘久, including 1 #1 yellow water, 1 - shore V, 1
Conventional method of giving d inertia (borinog holding method) kg
@do.

The m4 figure is a station 1i co/troll station with the rudder fixed and always from this station to POL11.
The following shows a method for transmitting a number to other stations 2-4. That is, first, station 1 sends out POLk, and station 3t, which requests a transmission bias, changes its POL to kLSV and transmits m. Sends the seventh data, and after the data, the end of data kAD
Add fEND pattern. After detecting the END of the control stay 7, send it again to another station 7. A time chart showing the production of the 1I46 ML. The horizontal axis is time, and the vertical axis is the stay 7 position ◇. The upper part of the time axis of the valley station is the received data, and the lower part is the biased data.

In this method, a control station/1
A special pattern called END is required for the end of the data to reach t-1 fibers, and the transmission is sent after the POL for soliciting the next transmission right reaches the 1st direct communication/troll station': 5rt. It is inefficient due to Furthermore, the core trawl station requires control to give the feed wIIlt evenly to the valley stay shore. In order to eliminate the above-mentioned drawbacks, we will use the method shown in Figure m5.

Figure m5 shows the control station machine 1irt-valley station 1~4rCIUK. which was explained in figure m4. This is a method of holding it. Initially, station l becomes control station 7/ and sends out POL. Station 3, which accepts the transmission bias, changes it to POLthsv, and then sends the data. Once the data has been sent, this station 3 becomes the core trawling station, with a draw of 1M
and then sends out a POL inviting the next transmission. A special feature of this method is that the stations that transmit photons sequentially become core trawl stations in the same way. 7th
The figure shows this method as a time chart, and the number 0 method is thought to have been overwritten by the ENI) pattern kmmPOL pattern Kit in Figure 6. Also, sending 1
If the completed station immediately sends out a POLt, the RC4F Sudheist officer sends the fII to the town 1, which is more difficult than the 6th table on the side 4. However, if any station has a delivery vehicle, the PO
L completed t-rounds on his body record and sent out #FOLt on Sday 7M.
If the POI is detected, it will return to 6kPO.
There are drawbacks to hardware AM in that a control circuit that sends out L, a POL Katana, a timer *t, and a Viiyrc must be provided for each stage.

杢孭＠〇-target does not lose the efficiency of the traditional Borinda-holder υ direction, and the node quest of the Karina station Tt
It provides a loop-type data transfer that is similar to d and leaves general control to the core trawl station.

Misfire @ is the conventional control Sdashi M7-fflJ
Shiki no Ko/Trollsday/iiin's shozo-goto,
Bowling charm method ^ Yotaku note with shield eyes, meat sword style t
- Endurance is d1, and the hardware of stations other than the control station is 7g.

Below, we will weigh %91. Figure # & 8 is a wide explanatory diagram of the seasonal value. 8A-88-80-81) indicates the starting position. Station 7'il:yl (8T1) is set at the control station (6t) and 8T2 to 8T4 at other stations. 8T1μ, two unprecedented 1#
I'm waiting for the i-style 愼■. No. lμ, this station 8Tl
Unconditionally sends the outgoing partial fIK of any station other than the station 7 and captures the town signal (POL) without any conditions.
At the same time, the message 9 and 2 were sent out by the cough 8Tl themselves, and the message 1i111J11 Samurai Exit was sent out by the 8Tl itself. The old I (POL) was returned as is for 8 TIK, and the ship was a single rudder that included the Tando and Send Bay Fukenmachi (POL).

By adding these two machines IIL, station /q outside the control station 8T1g, the POL that the atrocities attached to the data as 38 bias nine and sent out.
Instead of accepting Vc in this POL, it is perverted in iTl and receives 8Vr instead. This # button changes station 1, which is missing, from send mode to pass mode (
Repeat mode) 11 7t% Control stay 7: O stay VN7ri except for 1,, conventional POLmmtlfi+i! is made unnecessary.

That is, only the control station needs to have the POL am magazine. Here, POL mosquito detector means POL
(Continuously check whether the time at the box where Tamerahisa's POL is sent is normal and whether it resonates within the cabinet.)
'OL, if you receive it, by checking whether the number of times is within the basic limit, the h4゜1 lead time hour over practice timer will play its role *tthr rice, and the careful delivery will be From POL's anger and 11th generation (DPOL Yokoide Kaiken, POLli's Kakunota is the successor to Yonecho.) In addition to this timer and Katsuta, who were killed by Hard Fair, (according to the micro program) 2 toe wear (firmta air) V meshing 4
6ru.

The next Km Imos will be completed in Ka2. Figure 9 is an example of the time chart. When stage Ayano 8'l'l sends POII, this POI, Tsumugi, 8T1-8T2
-8Ta--------O is sent to the lower A&C. Now, let's assume that the 8Ti is a lI car.

絨8T3 changes to POLt凰8v, adds data and sends it out, adds Pol to the overconfidence light r, and sends it out. If 8TIK members remain in the advance format from STs, in iTl, asvtavh of the first area is included, then the next (the data will be ignored as it is, and there will be no fight against the FOLE that is 6 in the last area) In this case, @POL is replaced with ILaV&c and the queen data is pulled.POL is sent to Arashi, and POL is sent to @isv overload.C4DP
OLKjD4 directly sends a transmission request to the station requesting transmission. In llm-, there is a case where #Tjl has 1int transmitted as a new temporary value stake, the above POL is implanted by 8T211C, becomes 8V, and data is added, and 8T snow transmits llAtm4◆ become. On the other hand, the data sent from 8T3 to 8TI and POL are changed unconditionally to fxb&BY and B8T2fr:m to the 8T3tlc line, and 8T3 absorbs this data and receives R8v. This le 8v
Due to the injury, the STs ends the data transmission mode and enters the pass (repeat) mode 11C.

In response to the POL generated from 8T1, I noticed that t8TIK returned without any response as usual.

Is there any need to send unbalanced water to the valley station? Even if the transmitting water is rarely available, POL may not be available for some reason (mainly malfunction).
Unacceptable condition - Due to any reason when VC is terminated. For this POL return, 8T1 is i4 Arashi POL
t-sent on the line. In order to estimate the time it takes for the POL to return, and to monitor the number of poLo returns, the STI uses a timer and a kakunta to monitor the POL.

The embodiment of the control station 8T1 is shown in glo-, and the husband xaH of another station is shown in 11-.
Control stay S/Yono STl is! [Qjl (1
LcV) 11. Transmission 1giilli (TRM) 12
, resynchronization path 13.41-1 path 54, clock I regeneration 4 path 15, change-1 path 16, selector 17, shift register 1
8, POL Exit (2) Road 19, 8■'NIL Exit Lg
111i12 G, *vl fi 21% R8
V pattern generator 22, POL pattern generator 2s% control seaweed 1s24, reception sections 28, 26, tie!
28, the counter 27 consists of p. Timer 2iI and cuff 7ri 27 were forgiven for FOLwL viewing, and receptionist Yu 3s
Sending praise to , passing on the sending of Koryo to reception @2@, and w
The line 411I output control to the wt91 path 24, the transmission to the selector 21, and the data - indicated -1 - are given from the i-needle g machine to the control station K11ili. Additionally, information such as data sent via a transmission line is inserted next to the needle Jl as necessary.

The control station of this #generation is 11
．． The data entered into the shift register 18 through the demodulation circuit 14 is sent to the POLlil output port l-1R8V detection circuit 2.
0 through the control circuit 24 to the selectors 17 and 21t-
The selector 21 is the transmission data, aSV pattern,
Select one of the POL patterns. The selector 17 is used to switch between repeating received data as is (repeat mode) or transmitting data from the own station (sending mode). Reception gzs sends il! The reception unit 26 is a circuit that notifies the request to the control circuit 24. When POLt is detected as shown in FIG. 10 as a block for assigning a time value to the control station, the POL monitoring timer 28 and POL counter 27 are activated based on the detected polished rice. The timer 28 determines whether the time from one POL to receiving the next POL is also longer than the reference time (which is the standard for abnormality determination), and generates a timeout over output when it is very hot. The POL counter 27 counts the number of POLs and sends it to the control circuit 24. Control circuit 2
When the number of consecutively received POLs is greater than the reference value indicating a normal value, the old woman makes a determination tL that there is an abnormality in the number of times, and performs the necessary control. In addition, this station is where the POL that was sent to the sales station is directly
, when it slows down, the POL from the POL pattern generator 23 is sent out again to the top via the selector 21t. Also, there is no response from station - Sv-
When receiving the data POL as a foreshadowing, the POLt
B8 ■Pattern Gene V-Evening 22 no. 8 instead of suction pile
It is sent to the top via the v-meeting selector 21.

Pull'f1 #l own POL putter/Jiene V-Yu 230PO
L is sent to the top via the selector 21. In this result, at the control station, when there is a response from the wheel station and POL is 21g,
Asvvc must be seen from the POL, and then the POL rack that runs through the carpet control stay 7 must be added and sent. As a result, other stations will not receive your issued POLt-^, and
This has the advantage that OI's ridge check and POL's close-up visual inspection are unnecessary.

Stations other than the control station of gllA have approximately the same configuration as the control station of d%#f101d, and the same symbols represent the same contents. Specifically, this station has a #control circuit 29, and does not require a timer 28 or counter 2. Reason for not using the timer 28, counter 27, and t.
-V -i y The f”OL issued by the country is 8Vvc
! It is decided to change it to a rare item and send it out. On the other hand, such R8■ is changed from the detection name data transmission mode to the normal repeat mode in the R8V detection circuit 20. The IlI control circuit 29 plays a role in this mode change history.

According to this example, the effect is that the 71-domains of stations other than the control station can be made simpler than the station hardware in the polling system without reducing the transmission efficiency of the conventional polling system. There is.

For example, the above example is for control station 7
It goes without saying that the ◆ example in @ can also be applied to two or more control stations.
The L cowl/rear 27, the tie f28, and the control section 1124 may be configured by an integrated S<microcomputer.

According to the present invention, it is possible to share the efficiency of the conventional boring system and the control of the integrated transmission line structure of the fixed control station system, and to use pollino control for the hardware of stations other than the control station. It has the effect of simplifying the stake compared to the holding method.

Figure 1 shows an example of loop transmission configuration, Figure g2 shows the priority control of loop transmission, and Figure 3 shows the data format required for priority #. Fig. 4 is a conceptual diagram of prior art priority m control, Fig. 5 is a conceptual diagram of prior art priority control, 5ljA is a time chart of Houki 4, s7 is a time chart of Fig. 5, and Fig. 8 9 is a conceptual diagram of the priority control of the actual mH according to the present invention, FIG. 9 is a time chart of FIG. 8, and FIG.

8T1・-Suntrol Station/, ST2~8 T
4-...Other stay Vyin

Claims (1)

[Claims] From the L serial transmission fs path and the am- station that controls the slow data transmission and reception IIN, the Kite υ and the Ruru station of the Sensui are directly connected from upstream. Send 4svIA Yotokuchocho block code to send price, and add data τ and send it, and after data sending is completed, send a new one to the downstream. In the boring layered loop data transmission device having the configuration, at least i'' of the multi-ridged stations shall be a 1c co/troll station, and the cough control station shall be a transmitter. **Unconditionally transmits the sending permission code sent by stations other than the Mukuro control station, regardless of whether a request is made or not.nt-
Changed to Tokusai Shogo and sent it out, and also sent it to Deru Shinku.41
System l means of sending out I Yokoa Tokkyocho Shingo and the sending bias sent out by the cough control station! I get permission signal is 1
A loop type data transmission control device comprising: second means for transmitting a redirect transmission permission acquisition permission signal when returning to the t#x/troll station after passing through the t#x/t#x troll station. 2. The loop-type data transmission control device* according to claim 1, wherein the control station/is equipped with an 'IdA bait that monitors the number of times of love and the reception period of the transmitted samurai permission signal.