JPS6449351A - Data communication system - Google Patents
Data communication systemInfo
- Publication number
- JPS6449351A JPS6449351A JP62205631A JP20563187A JPS6449351A JP S6449351 A JPS6449351 A JP S6449351A JP 62205631 A JP62205631 A JP 62205631A JP 20563187 A JP20563187 A JP 20563187A JP S6449351 A JPS6449351 A JP S6449351A
- Authority
- JP
- Japan
- Prior art keywords
- measuring
- signal line
- transferring
- signal
- timer
- 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 improve data transferring function and transferring efficiency by providing in a control device a measuring signal sending means to a measuring signal line, a measuring signal detecting means, a measuring means to measure a time from the sending of a measuring signal to the detecting of the signal and a means to set the period of a transmitting signal according to this measured value. CONSTITUTION:When the power source of a control device 20 is turned on, a measuring circuit 2 causes a timer 1 to be enable by a signal line 103 and sends the measuring signal to a signal line 101 simultaneously. The measuring signal passes through a measuring signal line 100 and it is detected from a signal line 102 through a receiver 5 by the measuring circuit 2. The measuring circuit 2 to detect the measuring signal stops the timer 1 by the signal line 103 and instructs the setting of a transferring speed to a transferring clock generating circuit 3 by a signal line 104. The value of the timer 1 at such a time is determined by the lengths of input and output interface cables 201 and 202. The transferring clock generating circuit 3, to which the setting of the transferring speed is instructed, sets the maximum data transferring speed to be transferable by the value of the timer 1 and hereafter, the data transferring can be executed at the set speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205631A JPS6449351A (en) | 1987-08-19 | 1987-08-19 | Data communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62205631A JPS6449351A (en) | 1987-08-19 | 1987-08-19 | Data communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6449351A true JPS6449351A (en) | 1989-02-23 |
Family
ID=16510087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62205631A Pending JPS6449351A (en) | 1987-08-19 | 1987-08-19 | Data communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449351A (en) |
-
1987
- 1987-08-19 JP JP62205631A patent/JPS6449351A/en active Pending
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