JPS6454955A - High speed polling communication system - Google Patents
High speed polling communication systemInfo
- Publication number
- JPS6454955A JPS6454955A JP21171487A JP21171487A JPS6454955A JP S6454955 A JPS6454955 A JP S6454955A JP 21171487 A JP21171487 A JP 21171487A JP 21171487 A JP21171487 A JP 21171487A JP S6454955 A JPS6454955 A JP S6454955A
- Authority
- JP
- Japan
- Prior art keywords
- data
- terminal equipment
- enq
- sequence
- transmission
- 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
Abstract
PURPOSE:To attain quick data collection, by sending a polling signal addressed to the succeeding terminal equipment from a terminal equipment not awaiting the transmission in applying polling to said terminal so as to allow a control station to eliminate the need for the polling signal addressed to the succeeding terminal equipment. CONSTITUTION:A host CPU 10 awaits a data after an ENQ sequence transmission and discriminates whether or not the data is the ENQ data or the transmission data in receiving any data. Assuming that a terminal equipment 141 does not send a data but sends the ENQ sequence, the CPU 10 discriminates the absence of data in the terminal equipment 141, a terminal equipment designation value SA in the received ENQ sequence is revised into N+1 and the data reception from a terminal equipment 142 corresponding to SA=02 is awaited. When the terminal equipment 142 receiving the ENQ sequence sends a data to a line 13, the CPU 10 discriminates the data reception and recognizes/processes the received data as the transmission data of the terminal equipment 142 corresponding to SA=02. Then the polling signal addressed to the next terminal equipment is not transmitted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21171487A JPS6454955A (en) | 1987-08-26 | 1987-08-26 | High speed polling communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21171487A JPS6454955A (en) | 1987-08-26 | 1987-08-26 | High speed polling communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6454955A true JPS6454955A (en) | 1989-03-02 |
Family
ID=16610383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21171487A Pending JPS6454955A (en) | 1987-08-26 | 1987-08-26 | High speed polling communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6454955A (en) |
-
1987
- 1987-08-26 JP JP21171487A patent/JPS6454955A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1994028654A3 (en) | Secure communication system | |
JPS54112106A (en) | Data transmission system | |
JPS6454955A (en) | High speed polling communication system | |
JPS6429039A (en) | Data transmission reception controller | |
JPS55147851A (en) | Communication controlling system | |
JPS5715550A (en) | Data transmission system | |
JPS5739646A (en) | Interruption controlling system during communication | |
JPS5528615A (en) | Data communication system | |
JPS5616350A (en) | Data transmitting system | |
JPS57141741A (en) | Input and output control system | |
JPS5279815A (en) | Transmitting and receiving circuit | |
JPS5783945A (en) | Information transmitter | |
JPS5610757A (en) | Circuit control system for data highway system | |
JPS57180254A (en) | Data transmission control method | |
JPS6423643A (en) | Communication system | |
ES2002316A6 (en) | Method and circuit arrangement for the transmission of data signals between two control devices within a loop system. | |
JPS5759233A (en) | Signal transmitting circuit | |
JPS6484998A (en) | Bus network device for remote controller | |
JPS5776622A (en) | Data processing system | |
JPS5637794A (en) | Multidrop circuit control system for audio response unit | |
JPS56132840A (en) | Method and equipment for transmission control | |
JPS5759235A (en) | Film transmission system using job transfer system | |
JPS5647146A (en) | Data transmission system | |
JPS57161924A (en) | Data gathering system | |
JPS57131146A (en) | Data transfer system |