JPS5911051A - Multiplex transmission control system - Google Patents

Abstract

PURPOSE:To prevent the generation of operation stop of all systems or the like, by providing a relay drive circuit to a monitor terminal device of a control system for resetting surely the monitor terminal device at the shortcircuit detection and operation. CONSTITUTION:Plural terminal devices are connected to two-wire signal line 3 connected to a transmission unit of a multiplex transmission control system via a relay contact 12, an address is allocated to each terminal device for monitoring load, control data and local power supply and the like respectively. A monitor terminal device in the plural terminal devices is provided with a power supply circuit 14 storing the signal power from the signal line 3 and taking the power as the power supply of the said terminal device, and a logical calculating circuit section 15 and the like as a discriminating means of an address data of an address signal from the signal line 3 and a set address data. Further, the relay drive circuit 24 is provided between the circuit 14 and the circuit section 15 for resetting surely the monitor terminal device at the detection and operation of short-circuit and preventing the generation of the operation stop of all the systems.

Description

[Detailed Description of the Invention] Kimitsu Il]l[is a data transfer system using a time-division local transmission system.
It is published in the 11th ill system, and its purpose is to compose the lyrics of #i9+/interconnect detection - monitor, reset the terminal, and make it possible for Yamasaku Saihokyou to do all the work. System 1ν) Multiple transmission system that prevents troubles such as operation stoppage 1 *ll system? To provide,
Ru.

From the beginning of the 17th example, there is a nun ((14. 1st
Figure d: Schematic structure of the entire multiplex transmission open-side I system with "non-explosion" 1. The host computer is a computer such as a personal computer or an office computer, and the host computer is a computer such as a personal computer or an office computer. , i RS-232C rod 1 serial interface? This interface allows data to be output and input to a single-side device using a serial pit. (2
) is a transmission unit, and this transmission unit (2) has two transmission lines (3)? Through several l'Mi terminals (4oJ
(411) (4□1) ... is in contact with th'1., s1. I'm so talented! ::Heki (4at) (4u)
(42ρ...) The IJ, address data, and ib control data are transmitted from the 21 to the transmission signal in a time-divisional manner and cyclically.

The transmission unit (2) has a host computer, an R8-232c serial interface (5) for communicating with the child, and a microphone connection (1).
, open side) circuit, 1. ! 1111 end device (4o+) (
4++ ) (42+,) Return data from the host, data from the host user 1 (now 'CM self 1. record, 1j: capital +71, 1'fM unia (401)
(4+1) (42+) ... for j, r':
)j, (1-i 4 transmission 1 convex and terminal device (4o+
) (4J (421)...Transmission/reception section 1 (i(s+,
2) oi+, 1゛G1 terminal (4o+) (411)(
42+)... fc's data input that makes 1,000 nicks.
10-1 (-1) for SO1- and abnormal display, terminal device (4)
o + ) (4 + 1) (421) ... to display the address data of 1. Manual setting and display part (9) and the system's % operation from the non-nel city etc. to -7 to the command by 'fz host] nhuta ten -Neruka, Iyun Sending Uni Sl-+2111111's 10-board v,
b tanemuka +7. ), ], one fuser/test changeover switch 1tF11 is installed, and this changeover switch (1tF11) is installed.
0) is inserted into the controller side, then the performance 1♀itl, 1 circuit section +61t-J host controller side is turned on.
By command from ν11Ij (4)
o+) (4u) (4g+)'... ili control? When doing this, the terminal device (4o+) (4+1) (4
21) ...'s Wishi Ditao host computer +1
It is designed to be proportional to lllllJ. Terminal (4
o+) (411) (421) ”・FJ load 1s i Jl, terminal device for control load opening side 1 (4o+)...
・Input terminals (40 homes) that input data from crime prevention sensors, etc., and send them back to UniSoto (2) as monitoring data, and signal line (3). A monitor terminal (421) for monitoring the local power source supplied to the power distribution board where the terminal should be installed.
. . . etc., each has d unique addresses, and the transmission value from the transmission unit (2) is constantly read, and the address data is transmitted to the terminal device. When it matches the address, K reads the control 1111 data attached to the address signal, and according to the control data, the terminal device switches the switch 11i'+ of the relay etc. to load the load ( 1
... In the terminal device (4o+) (4+1
) (421) The load (11)・
The condition of the body 1 of ..., detection data of sensors 4J such as crime prevention sensors and daylight sensors, and monitoring data of the D-Cal power source are sent back to the transmission unit (2) (4). Figure 2 shows the transmission rate per funnel transmitted from the transmission unit (2) in 11 cycles by hour, and in the figure SI1.j start number S.
C8 is address read start pulse, AI)
It corresponds to fd address data, PC, eye parity check, C8't machi 11 jllll hit start pulse, LS corresponds to control data, P
C2 is a parity pre-nick, and SS is a return waiting pulse.

(421) The terminal device for Noshinita is for Mokemitsu (it is a surplus, and is for Jin's T-niter). , It is intended to compensate for wire breakage and the unintentional nature of 'tungen', and is used for terminals with an opening in the front (4o+)... and terminal tickets for manual labor (4u)...
There is a relay contact L121 in the middle of the branched signal line (31) and the main 4G line (3) to the busy distribution board.
+I gorge 1 joins its own row, and when the above-mentioned 741 fault is detected, relay contacts t121 and 021 k l are separated from each other, and relay 1
No., signal @(
3)? As will be described later, by shutting down the short-circuit light output Pk from the system, it is possible to prevent the system from stopping.

The 3rd line shows the circuit line 2 of the 72-meter air conditioner (421), and the transmission unit (131) is connected to the transmission unit (13).
2, the signal sent from 'Ichiriki's Imaha Seiki IA' is the tyode bridge at the ridge.
31 output pressure d This diode stiffness (13+=
The small gap circuit (14) that can be ignored
+, smoothed by Ct, Zener tie auto ZL)
1, the voltage is kept constant at a predetermined voltage by input 1' of the logical detection circuit section (15) consisting of a microphone input switch and a human input voltage between VDD and VSS.
do. The voltage wave of the input line 13+-h is waveform-shaped by the receiver consisting of the diode D1, the resistors R, , R, , R3, the condenser C3, etc.
It is designed to be input at the signal input terminal SIG& of the ls 1151. Logic exercise - The circuit i"d'+ (15) is composed of the following circuits as shown in Fig. ), and this signal human power 1'l!ll child SI
When the voltage of G is H level, e-1 is emitted.
67 or self 1g oscillation? This self-power oscillation is designed to stop when it is at L level. The self-oscillating same wave rti: in the oscillator (16) is traditional to the terminals O5t, 052, O8s 71. Q is determined by the constants of CR elements C4, R4, and R5.
This is what it consists of. (17) counts the output pulses of the oscillator (16) and completes the logic in the first part (18)
and a monitoring input reply section (19). i rt (2o+ and tal
lh logic side 41111 ff13(18) 1 interpolation 1 F and is an address data discrimination section, and furthermore, 22+ is the latch output h+X which latches the output/J of the 1141 data 'I'll separate section shi(1).Then, the address data!l''IJ 1Jll 1j
The output of the address setting switch 1'8) is applied to the iX121K through the terminals A1), ~AIJ, and i, and the address data discriminator (21)
The data A1 .l- is included in the transmission side and r-C is included in the transmission side. Ir, upper d self throw switch 1
231, I looked up my own 'P address when I was lying down, and found out that my own ++7 had come out.
1181 VC 1ii11 (1j data 'I'
lJ separate section [2111f address data AD
The control data LE; 21 is inserted into the latch output section 1221 to output the fR11 stroke example number.

This open side +4= output is from terminal R1,), , R1,,
l, , RD5 and subsequent relay try circuit 1
24) is done manually. Terminal DI<Dr:j of relay drive unpacking circuit (15) with 1 output pin and 1 control output R1) l+ RD2. R.L.J.
Latch based on the data inherent in 5 - Relay Ry of Jji
,, The timing value for the RVzr operation is outputted. This tie-three signal no＼
Luz+IJ is set to 2 levels at the human power level of terminal RTC.
It's starting to feel shaky. 12511i Supply to the switchboard 'Small gap I1 No monitoring input +1+, this ignored human power 12Til ($d, AC24V 71-(j(p
, f input terminal → ° followed by one], 'Komai supply or n
"C": Photocoupler 12fil is turned on, and one of the monitoring value input terminals IN, ~IN5 of the logic arithmetic circuit section (16) is used to connect the photocoupler 1 to its monitoring signal input terminal IN.
2612 is the monitoring value of "H" level? '.Support circuit part (15)
A terminal RE'fv return signal output 1'W child,
When this terminal Ri;, r, is H) r level, the transistor TrOi is turned on and the two signal lines (3110j7, tie A-1, suspension, soji (13) and low 1 pin iI<, o and 1 With bending and connecting, ・;:ji, ton”f++, 1 of -t
1'
Items for sending fs, its sending IJ, -1-i
The return waiting time Hals is sent out during the 1υ1 period under the control of the 2nd control (the logic circuit part 05 is extremely sensitive to the data).
It looks like Q.

Now - Hi1. (1, Sushi-Drive Detective'i +241
&J-Kikomei's chief sergeant Yoko IJ! , it is a model with 2 right legs and 1. Rinori 17- Ry, ,
Ry, and these IJ 17- Ry, , Ry, orise helito, and a switch for setting 1 sorting are made up of T, and the relay Ry, Nl is connected to the relay CL.
8. r-hi control output 'Qi 4 child old → 1 output is 91-
("The tiger that turns on when the bell comes on, 7.,; Star'rr
IK +PY column K it! τTG L/, cut out transistor l' r, 1 three ivy, and 5 ivy τ together with il
1, the tangent line 17 to the base rt-transistor I'rl] and the run of the transistor r r,! V(id turns off and '=!' is the transistor 'rrl' turned off and e remains turned off'
One row of reset coils CLR1t is connected to I'r2. Switching relay R372#-1: Controls the set coil CLS2 and connects it in series to the transistor 'I'r3, which turns on when the output of the output switch R1]2 is at the 'I(' level. When the transistor rr3 is on, the transistor rr4 is turned off, and when the transistor rr3 is off, the transistor rr4 is turned on.
She is obsessed with being a concubine. Set coils C1, S, Cl3 of these relays Ry+ rR'/z and [・transistor T
Each day's column circuit with rl, 'I'r3 is connected in parallel tl, and the parallel-[circuit ratio ≠ includes transistor'rr5] between the output m of the 1st circuit (13). It is turned on when the signal is on, and turned off when it is at the 1L# level. Each relay Ry+, Rt2 reset coil CLR, CLR and transistor 1 'I''r2+'r
r, and each column circuit is tangent in parallel to nl. This parallel circuit connects the tie-out 11) with the resistor RP and the tie-out connection (1) through the resistor rr5.
It is connected between the output terminals of 3). Each relay R3'l in history
.

Reset coils ci and I of Rt2 (and cLR are respectively tie vine 2 and auto 1)2. D3 and transistor 'rrst
'It's through. The base of the transistor 'I'r6 is connected to the base resistor t41, the resistor 4 bar R6, and the tie 1-to I) 4 times 1.
Connect the positive side output wire of T131 to the connected base of N1. When transistor i' r 1 is turned on, transistor
++r K is set to turn off. transistor i'
r 7's base bias 1 and 1 path, d-to-work J-tie auto Z1) 2 and resistor R1+ and 1<, □0101I
N11 in the partial circuit of Rt and transistor I'ry; It is connected to the base, and the Zener of this base bias circuit is set to R%: IJ. Now Relay Dry-)1
sl lA'+1241. Beneath relay Ry, +R
When resetting 3'p, use a tie-auto ridge (tie-auto l between the output terminals of 13j) 4 and a resistor R as a small gap for compensation.
, through the surface column circuit O: of a certain large row tII]
Njin1noCoff1ij111 Eteame.

111, dance performance ↓) Circuit tls (151 sub-side 1 output switch RLlstj, resistor R8 and transistor 'I
'Resistor R8 and tie auto I)6 to connect to the base of r5? Relay drive through open side 1 output terminal 1)
I have read RDK. Next, we will explain the operation of the multi-small transmission system 1 system.
) is initialized by turning on the power.
Set ttll on the computer side.

Here, n on the test side is a command from the host computer I11? The manual setting and display section (9) is set to a state where data input from the boat is not accepted. On the other hand, if it is on the computer side, it will accept commands from the host computer (1). It is set as a decoy so that the party f=I does not correspond to the data input from the board.

First, each terminal (4o+), (4u), (421) offsets V? : In this case, for example, when the UJ exchange switch is input to the computer side, the command 2 transmission unit (22) which has been set up in advance from the keyboard on the host computer Ill side can be sent. It can be set. Now ] When the cloak data is sent to the sub transmission unit (2) at As+-]-1-, the transmission unit l-!
2+'s I Ft ``1tll 'd'i times Ifis in
6) When the d command is executed, the data sent by the tugboat Ilj is determined to be the address for P trace installation and the model of the terminal device, and the address and model code are determined by this 111' correction. Register for this registration day 9 meals 1. Enter the fortune telling in (7) to book Nl 1. Wear a helmet. Now, if even one device is registered, the transmission unit ID (21st message transmission - 9) (Mu Lf≦ starts to be K, so the number of units registered in the second self-0 operation?) By adding 1, the address becomes younger. 1! Access the click from the first page. This constant access 103
The work was done on the host computers HL and d Museika.
When accessing the input terminal <4o), the data returned from the input terminal C41I) is stored f
it<(Include r4 in 71, middle of data!! 1 line and write 1.Hold. Chita negative 11j tti Risen 1j
11 When accessing the endoscopy device (4o+), the operating state of the load (11) is stored in the renal I cage visual input and sent back.
Hokari-cho hangs up in the busy memory department (7). In this way, transmission units 112Hd each 11! Mhe'Xi (4o+)
(4u) When the address and model of (4t+) are registered, a primary access is made, and the data of the return signal is stored corresponding to each address.

Next, a load (11
)? If you want to control it, you can use it as a P-type skin (11).
Input the controller's command on the controller board and then input the address data? We are busy unpacking data and putting it into history. Shito 1, command day 9, address data, feeding control! data fr, sending unit 2) to send (F't
Then, it is determined whether the terminal to which the received address data registered in the Y-side control circuit section (6) of the transmission unit (21) is the load control terminal (41I). Katochori'z”rJ is determined, and the result of Koma1hiki is YE
At S, t'L causes the control data 1-1 to be created and transmitted to 1-1, which has the width 1 of the address.

If s No R, at L ha host computer l)
He does not accept commands from anyone and returns to the state of a command attendant.

Commands preset like this? By sending data from the host computer il+ to the transmission unit (2), error status requests, status resets, requests for return error terminal device addresses, terminal device divine requests, and medium number of areas are available. Human control request for configuration I and monitoring data of terminals, confirmation of the types of several terminals in the area, registration of the types of multiple terminals in the middle of the area, software of the transmission unit (2) Reset, 9. Searching for the number of commands, checking the data transmission of the transmission unit (2), and performing the λ-1t transmission unit (2) with the host t-]nhuta 11hairs ±−
] - mode, the terminal device's IM data is sent, the error status is sent, the output of the number of commands that can be received is sent, the terminal device's 4itl class, party (H's nl, error status is sent, , Isn't there any data to be sent? Send it to the host computer I
It can be displayed on the l+ display CR'r.

By the way, HI of Niter's asthma machine (4 months old)
Written by IIJ t:i It will be as follows. First, Cape Sengoi 131K
If there is no short circuit in +llj 1, the capacitor C in the circuit (24)
6 is charged to the base bias circuit's Zener tie ZIJ2 and the resistor RII −
The transistor Trt is turned on, and as a result, the base current t of the transistor Tr is bypassed and the transistor rr6
It has been decided that the production of mtlJ will be off-duty. Then, the seventh unit (4!l) is accessed from the transmission unit; 2) and controls 1111 to set each relay Ry+ +Ryzf.
When I send RT, each unpacking 1 output terminal RD,.

R1), , RD, are held at *H# level.

By this holding, the transistor "r + + T +
3 becomes an on-state decoy. -The output of the force control output terminal RD5 is connected to the diode D^? Since it is connected through the relay H<, +I
During the period when the output of (IJ output terminal DR■) is 'L level,
The base of the transistor 'rrll is at the 'L II level and is in an off-state box. Each control output terminal R
1), , 1102,1 (when the output of D5 reaches the 1H" level, the output of the relay control output terminal DRI) is "
When the H' relay is reached, the transistor Tr3 turns on, and this turns on the respective relays R3'l, R)'t.
Set coil CLS, cL8. W) (+ji
1ti 141. is in, te, each relay 1<yl, Ry
2 is a set part, and each relay 1ν point (121,
1121... starvation, and the monitor l11
Connect the double wire (3) after the m terminal (4!1) to each terminal (4°1), (4o), and (421). After this, in the normal state, the relay is driven by a predetermined tie and three wires for each access.
The output of 1) will be output, but the initialization state of the system will be maintained until the relays Ry, , and R'1tid, which are latching relays, are reset. Of course, when transmitting lyse lido uni lido: 2 (karapi) 1ltll 4 out 1 i yyuri, 'J, 'P jl control data for applying a reset meeting at the time of wakusef! Logic operation of terminal unit (4+) 1 control terminal of circuit capital (16) (old) 1. old) 2'
In this case, transistors i'r, , 'rr, or transistors i'r, ,'rr become on-state l/g, and the
'The output of the AA sting restraint output pancreatic terminal RI) is 'H''.
As a result, the tractor star i' r 5 is connected to the tie-in hinge r (, each transistor 'I' r to the reset coil C1, R, I CLH, of each relay Ry, Ry2.
! , i' +4 and transistor 'I' r ,,
k JIll then excite the current relay R'l+,
R, Y2 operates resetting/separating, and its relay contact (12)
, +121 f off and turn off the corresponding monitor 1 (4
21) The subsequent trust line (3) is disconnected from the system.

Now, each relay contact (121, (+21) is in the on-state decoy, and an accident will occur at the X location in Figure 1).The transmission signal is input to each monitor terminal (4t+') (42+). 1, when the circuit power is no longer supplied.
The ethical arithmetic circuit section (16) uses the charging capacity of the capacitor CI+02 of the power supply circuit (14) as a small gap to create MJ, and the relay try circuit (24) uses the charging capacity of the capacitor C6 as a small gap to create 1tlJ. I will do it. Since the switching transmission signal is no longer received, the logical Hamahiro circuit section (1
5) is the control output terminal RD1. The outputs of R1)z, R■]5 are held at the "H" level, and as shown in the same figure (d), the output of the relay system n11; Here, since the discharge of the charge of the conductor Co is prevented from being discharged to the set coil ct and 8.CLs side by the tie auto 1]4, the base bias circuit tJ of the +2 transistor Try is Then, when the zener tie becomes lower than the zener if of the zener tie ZD2, the base mold surface to the 1st resistor Try is blocked by the zener tie ZD2.
, as a result, the transistor rr
, the base of the transistor Trt changes from 17 levels to 9L, turning off the transistors I and M. As a result of this off, the base of the transistor Trt has a base [1 (of course the loss R1). J…then Ichikawa or 5th Ward 1 (0
When applied as follows, the transistor rr61d turns on,
This push causes each relay R5'1. Ry2's reset coil cLH,c'L
, RV2 operates lyse/soto, each relay contact 1gl,
(121'z is turned off. As a result, the signal from the monitor to the terminal (4u) is separated from the UJ from the protection (3) system. Meanwhile, in the transmission unit (2), Pf is connected to line 4 (3). Has a severe punishment of ?m or more, has a behavior program r that determines that he is short-circuited and short-circuited.
At the same time as "Short circuit detection, 1", the transmission unit (2) is sequentially accessed from the monitor terminal (421) closest to the transmission unit 21 side) and called.
421) relay contact (121, 021'v-) is turned on, and it is determined whether a short circuit occurs again or not. In the case shown in Fig. 1, the most convenient method for transmission uni-soto (2) In the Hi+ monitor-terminal (42□), the relay contact (4z+) of the subsequent monitor-terminal (4z+)
121, (9 from point X in 12j), so the relay contact (1
21, short circuit is not detected even if (121) is turned on.Then, when the next °C monitor terminal! (4t+) is accessed, the relay contact (12
1. If intelligence is detected when t+21 is turned on, the address of the monitor-terminal (421)? Transmission unit +2+Usself1. If the switch t101 is a computer, display its address and the occurrence of a short circuit on the display CR'I' of the host computer.
After the 1711 work of 21, (Yuyun unit t2 + tri upper convex self-knowledge knowledge place X corresponding to the monitor-terminal device (4!
If you access only the front monitor terminal (421) and turn on relay contacts t121 and 1121'am, it will be possible to control the transmission of each car (141 + system f2C). This is possible.The monitor terminal (421) on the other hand detects the presence or absence of a small gap provided in the board.
il busy), have like %, and that candy? −, data r
(Transmission unit (2) Heno L4 store. When the cheetah disappeared, it was different from the host computer.
1's display CR'r or transmission unit (2) 1
．． , E I). Figure 3: swi exclusive
Cicada's self-illumination τ detection 'r' 1m visual input section (This is an operation switch for canceling the detection operation t1A of 251. Also, the opening and opening from the occurrence of the short circuit described above to the creation of the cicada lid 11v) ] Njin + iCo valley (crosspiece, Zener diode Z
D2 Zener City, Pressure, 417'1. 'Rh +
The value of R12 can be changed by setting I+1 as appropriate.

Each city's transmission control system 1j configured as described above.
At the end of the stem, (fll Ar,
Relay 〇) is controlled by the double line means through the switch τ (1[output V'H'' and the switch υ turns on when the bell is activated). In response to the tie auto, it is changed to 't:, t jf, which is charged by the output of the contin) J, and the song ff1..' through the reset coil of the relay? Mtl?hL conjin)'. A relay try consisting of another switching means with a contact, and a circuit detection circuit that turns on the switch marked with nfJ when the voltage of the capacitor falls below a certain value. Since the circuit oil is
The 18th wire is connected and the input of the doubled vehicle power disappears, and the capacitor in the 11th coil is charged (blocked by 11r or the diode, and the coils 11I and IJ are discharged and consumed). If there is no short W, another switch is turned on by the detection means], /Denso's charging (Hi is returned to the reset coil and the relay is reset to the previous work). As a result, a trick is generated, and the relay is set in the relay by the access VC of the E-niter 1'ii+l terminal. It can be used to identify short-circuit locations, and to identify short circuits.
- If only the signal line connected to the signal line is disconnected, it will become a problem, and the system will be more likely to stop functioning.

[Brief explanation of the drawing]

Town: +', l evil is wood 5 (: the basics of use and 71 times of the entire system 1j+'izu D riff evil, 2nd evil 1 bow turn to 1 history river (Mrihasugi pilgrimage, The third evil is I ``jJ-hee (
The monitor used for the terminal equipment 14 is shown in Fig. 6, and the brown 4-metal 1 is shown in Figure 4 and housing ``5'' of the operating circuit section of the terminal device.
0. Riff diagram, 5th evil (al ~ (fl is the same Ee niter αj
There is a time chart for hi-end equipment's sentry light moon, i
2i & 2], I Yun Sending Unit, 13) Phantom, it:I
'J IN, (4o+)A4n), (4゜1) is the terminal, (11) is @load, (12) is the relay contact, (1
4) r1311G', circuit, (151B rfit+
Kon operation circuit section, (18) d strong j tttli ji1
Part 11, (20) is one song at a time. - 4 'l'lJ
Another 1 tB, (21) is address data discrimination 1 (1 meal,
1241 trJ Relay Triler Circuit, Ry, , Ry
2rJ relay, 'jr5, Trr+, 'I'
rt is a transistor, ZD, J, Zener tie auto, CIEI, CLS2 C1, tll-] coil CLR, CLRld reset coil, 1) 5 is a tie auto, Co is a contin 111'. Agent Patent Attorney Ishi 1) Seven-procedure amendment (voluntary) 1. Mr. Commissioner of the Agency 1, Indication of the incident 1981, Patent Application No. 120091 2゜ Transmission system for multiple use of the name of the invention? 1111 System 3, Ura 11: Relationship with 11 people who do ``Cow''+, 31' 1lr
Xfi person 11 Location: 104 Yasada, Kadoma City, Osaka Prefecture
8 Address Name (583) Matsushita Den-1 Co., Ltd. R1- Representative Iku Kobayashi 4, Agent Zip Code 5:', (1 Telephone Osaka ((16) 345-7777 (Representative) 5,
1-1 A of the Sleeve Correction Order; 1 Voluntary correction Application number: 1982-120091 No. 1 The entire text of lines 5 to 16 on page 19 of the specification of the present application is corrected as follows. . [Now, there is a short circuit at point X in Figure 1, and when each relay contact (1, (12)) that was in the OFF state is turned on, it becomes OFF.'' 2. Figure 5 in the drawing has been corrected as shown in the attached sheet. do.

Claims (1)

[Claims] (1) A transmission line consisting of an address signal, a control signal, and a return standby pulse is sent out cyclically from the transmission unit through the signal line 7 to each terminal device, u]; outgoing f
1 in the terminal ((control signal?!?+-1?l1
It operates based on the data contents and monitors data such as load during the reception period of the return standby pulse. In a multiplex transmission control system that sends out a return signal, a relay contact wire consisting of two windings latched onto a one-wire signal wire at a position farther away from the position connected to the signal wire when viewed from the transmission unit is connected in series. Is there power available from the signal line to the seven terminals? A power supply means for storing and supplying power to the terminal device, another means for storing address data flJ for matching the address data of the address signal from the signal line with the set address, and an open side 1 of the control ri111 times number.
The content of the data is set to V]
41 consists of a logic control means that generates an output.
! A switch means that turns on when the output power is at 1H" level, a power supply connected to the power supply means with a diode IR-L-C and charged by the output of the power supply means, and a reset coil of the relay. When the electric power 1 of M'H 4J becomes less than a certain 1 shift, another switch connected to υ Pre-jigging means? A system for each city transmission open side characterized by a January node drive circuit consisting of a short-circuit detection means for turning on.