JPS57112197A - Remote control system for terminal slave device - Google Patents
Remote control system for terminal slave deviceInfo
- Publication number
- JPS57112197A JPS57112197A JP18537980A JP18537980A JPS57112197A JP S57112197 A JPS57112197 A JP S57112197A JP 18537980 A JP18537980 A JP 18537980A JP 18537980 A JP18537980 A JP 18537980A JP S57112197 A JPS57112197 A JP S57112197A
- Authority
- JP
- Japan
- Prior art keywords
- slave device
- pulse width
- signal
- master controller
- slave
- 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.)
- Granted
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)
- Selective Calling Equipment (AREA)
Abstract
PURPOSE:To enable the selection of a slave device with a simple constitution, by connecting a plurality of slave devices with a master controller is series subtracting a specified pulse width signal transmitted from the master controller with a reference pulse width signal of the slave devices at each slave device, and transmitting only the remainting pulse width signal to a succeedig slave device. CONSTITUTION:When a master controller 10 selects the m-th slave device 20m, the said master controller 10 transmits a pulse signal (a) having pulse width (mt) (where; (m) is number of slave devices and (t) is reference pulse width) on a common transmission line 3. On the other hand, the 1st slave device 20a receives a transmitted pulse signal (a) and controls the switching of an AND gate 25 with the reference pulse width (t) determined with a one shot multivibrator 22, then a pulse width signal c passing through this slave device 2a becomes (mt-t). Thus, no signal is generated at an output (h) of the slave device 2a. Thereafter, the pulse width signal is sequentially reduced by the width (t) and a signal of the pulse width (t) is incoming to a slave device (m). Thus, an output K of the AND gate 25 comes to ''0'' and an AND gate 26 is opened, allowing to obtain an output P as ''1'' and to select the slave device (m) only.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18537980A JPS57112197A (en) | 1980-12-29 | 1980-12-29 | Remote control system for terminal slave device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18537980A JPS57112197A (en) | 1980-12-29 | 1980-12-29 | Remote control system for terminal slave device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57112197A true JPS57112197A (en) | 1982-07-13 |
JPS6322517B2 JPS6322517B2 (en) | 1988-05-12 |
Family
ID=16169767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18537980A Granted JPS57112197A (en) | 1980-12-29 | 1980-12-29 | Remote control system for terminal slave device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57112197A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002071799A2 (en) * | 2001-03-07 | 2002-09-12 | Lab. Gruppen Ab Andersson & Bävholm | A communications system |
-
1980
- 1980-12-29 JP JP18537980A patent/JPS57112197A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002071799A2 (en) * | 2001-03-07 | 2002-09-12 | Lab. Gruppen Ab Andersson & Bävholm | A communications system |
WO2002071799A3 (en) * | 2001-03-07 | 2003-01-09 | Lab Gruppen Ab | A communications system |
Also Published As
Publication number | Publication date |
---|---|
JPS6322517B2 (en) | 1988-05-12 |
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