JPS6477245A - Destination designation discriminating device - Google Patents
Destination designation discriminating deviceInfo
- Publication number
- JPS6477245A JPS6477245A JP23265687A JP23265687A JPS6477245A JP S6477245 A JPS6477245 A JP S6477245A JP 23265687 A JP23265687 A JP 23265687A JP 23265687 A JP23265687 A JP 23265687A JP S6477245 A JPS6477245 A JP S6477245A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- select
- slave
- equipment
- value
- 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
Landscapes
- Small-Scale Networks (AREA)
Abstract
PURPOSE:To simplify the extending and transfer work of a slave equipment by discriminating selection/non-selection of the slave equipment in accordance with the voltage of a point connected to a select signal line and latching the select range with a strobe signal to eliminate a need of setting of select information in the slave equipment. CONSTITUTION:When a master equipment 1 selects one of slave equipments 2a-2d corresponding to a value (X1-X2) (X1<=X2) of the select signal on a select signal line 12, the master equipment 1 sets a value X=X2+1 to the output state and makes the strobe signal on a strobe signal line 4 significant thereafter. Then, a rise signal latch circuit 19 of each of slave equipments 2a-2d whose device numbers are X2+1 or larger outputs '1' and resets a fall signal latch circuit 20 with reset, and the master equipment 1 sets the value X=X1 to the output state and makes the strobe signal insignificant thereafter. Thus, circuits 20 of slave equipments 2 whose values are X1 or larger are selected by outputting a significant signal, namely, making a select validating signal 11 significant unless circuits 19 output '1'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23265687A JPS6477245A (en) | 1987-09-18 | 1987-09-18 | Destination designation discriminating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23265687A JPS6477245A (en) | 1987-09-18 | 1987-09-18 | Destination designation discriminating device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6477245A true JPS6477245A (en) | 1989-03-23 |
Family
ID=16942723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23265687A Pending JPS6477245A (en) | 1987-09-18 | 1987-09-18 | Destination designation discriminating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6477245A (en) |
-
1987
- 1987-09-18 JP JP23265687A patent/JPS6477245A/en active Pending
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