JPS5735447A - Data transmission system - Google Patents
Data transmission systemInfo
- Publication number
- JPS5735447A JPS5735447A JP11059680A JP11059680A JPS5735447A JP S5735447 A JPS5735447 A JP S5735447A JP 11059680 A JP11059680 A JP 11059680A JP 11059680 A JP11059680 A JP 11059680A JP S5735447 A JPS5735447 A JP S5735447A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- photocoupler
- controller
- signal
- terminal device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
- H04Q9/14—Calling by using pulses
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
- Selective Calling Equipment (AREA)
- Bidirectional Digital Transmission (AREA)
Abstract
PURPOSE:To realize the transmission system of 1:n with a simple constitution, by the constitution that each terminal device sends sequential data to a controller in synchronizing with a start signal from the controller. CONSTITUTION:When a start trigger signal (S) is outputted from a controller 1, the signal (S) is transmitted to a signal line 31 via a photocoupler 41 and to a delay circuit 2 of the No.1 terminal device 11 via a photocoupler 42. Pulses delayed for a prescribed time with a timer 4 and a Schmitt trigger circuit 5 in the circuit 2 are supplied to one input terminal of an AND circuit 3 and the data signal supplied to the other input terminal of the circuit 3 is transmitted to the controller 1 via a photocoupler 5 and a signal line 32. On the other hand, the pulse of the circuit 5 is supplied to the No.2 terminal device 11 via a photocoupler 43 and the line 31. After that, with the same principle, the data from the No.2 terminal device is transmitted to the controller 1 via an AND circuit 3, photocoupler 45 and a signal line 32.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11059680A JPS5735447A (en) | 1980-08-11 | 1980-08-11 | Data transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11059680A JPS5735447A (en) | 1980-08-11 | 1980-08-11 | Data transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5735447A true JPS5735447A (en) | 1982-02-26 |
Family
ID=14539856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11059680A Pending JPS5735447A (en) | 1980-08-11 | 1980-08-11 | Data transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5735447A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125548A (en) * | 1981-01-29 | 1982-08-04 | Omron Tateisi Electronics Co | Optical transmission sensor module |
JPH02308698A (en) * | 1989-05-23 | 1990-12-21 | Maruishi Seisakusho:Kk | Output controller and output control method |
JPH02308695A (en) * | 1989-05-23 | 1990-12-21 | Maruishi Seisakusho:Kk | Input signal circuit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4862310A (en) * | 1971-11-05 | 1973-08-31 | ||
JPS5336106A (en) * | 1976-09-16 | 1978-04-04 | Fujitsu Ltd | Data transmission priority confirming system |
JPS53126832A (en) * | 1977-04-13 | 1978-11-06 | Hitachi Ltd | Data transmission device |
-
1980
- 1980-08-11 JP JP11059680A patent/JPS5735447A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4862310A (en) * | 1971-11-05 | 1973-08-31 | ||
JPS5336106A (en) * | 1976-09-16 | 1978-04-04 | Fujitsu Ltd | Data transmission priority confirming system |
JPS53126832A (en) * | 1977-04-13 | 1978-11-06 | Hitachi Ltd | Data transmission device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57125548A (en) * | 1981-01-29 | 1982-08-04 | Omron Tateisi Electronics Co | Optical transmission sensor module |
JPH02308698A (en) * | 1989-05-23 | 1990-12-21 | Maruishi Seisakusho:Kk | Output controller and output control method |
JPH02308695A (en) * | 1989-05-23 | 1990-12-21 | Maruishi Seisakusho:Kk | Input signal circuit |
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