JPH0467395U - - Google Patents
Info
- Publication number
- JPH0467395U JPH0467395U JP11038890U JP11038890U JPH0467395U JP H0467395 U JPH0467395 U JP H0467395U JP 11038890 U JP11038890 U JP 11038890U JP 11038890 U JP11038890 U JP 11038890U JP H0467395 U JPH0467395 U JP H0467395U
- Authority
- JP
- Japan
- Prior art keywords
- unit
- hardware
- terminal
- control terminal
- switching mechanism
- 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
- 230000005764 inhibitory process Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Hardware Redundancy (AREA)
- Mounting Of Printed Circuit Boards And The Like (AREA)
Description
第１図は本考案のユニツトの自動切替機構の一
実施例を示すブロツク図、第２図は従来のユニツ
トの自動切替機構の一例を示すブロツク図である
。
１，１１……ユニツトＡ、２，１２……ユニツ
トＢ、３……装置架、４……Ｈ／Ｗ制御端子、５
……出力３ステート回路、６……Ｈ／Ｗ切替禁止
端子、Ｃ……コンデンサ。
FIG. 1 is a block diagram showing an embodiment of an automatic switching mechanism of a unit according to the present invention, and FIG. 2 is a block diagram showing an example of a conventional automatic switching mechanism of a unit. 1, 11... Unit A, 2, 12... Unit B, 3... Equipment rack, 4... H/W control terminal, 5
...Output 3-state circuit, 6...H/W switching inhibition terminal, C...capacitor.
Claims (1)
トは相手側ユニツトの未実装状態を検出したとき
自ユニツトを強制的に現用状態にするハードウエ
ア制御端子と、前記自ユニツトの前記装置架との
嵌合状態が不完全であることを検出したときに前
記自ユニツトを強制的に予備状態にするハードウ
エア切替禁止端子と、前記ハードウエア切替禁止
端子からの信号による制御を前記ハードウエア制
御端子からの信号による制御より優先して前記自
ユニツトの現用、予備状態を決定する出力３ステ
ート回路とを備えることを特徴とするユニツトの
自動切替機構。 ２ 前記ハードウエア制御端子と地気との間に接
続したコンデンサを有することを特徴とする請求
項１記載のユニツトの自動切替機構。[Claims for Utility Model Registration] 1. Each unit with a redundant configuration that can be inserted into and removed from an equipment rack has a hardware control terminal that forcibly puts the own unit into the active state when it detects that the other unit is not mounted; A hardware switch inhibition terminal that forcibly puts the own unit into a standby state when it is detected that the own unit is incompletely fitted with the equipment rack, and a signal from the hardware switch inhibition terminal. An automatic switching mechanism for a unit, comprising: an output three-state circuit that determines the active or standby state of the own unit by giving priority to control over control by signals from the hardware control terminal. 2. The automatic switching mechanism of a unit according to claim 1, further comprising a capacitor connected between the hardware control terminal and the earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11038890U JP2503600Y2 (en) | 1990-10-22 | 1990-10-22 | Unit automatic switching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11038890U JP2503600Y2 (en) | 1990-10-22 | 1990-10-22 | Unit automatic switching mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0467395U true JPH0467395U (en) | 1992-06-15 |
| JP2503600Y2 JP2503600Y2 (en) | 1996-07-03 |
Family
ID=31857718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11038890U Expired - Lifetime JP2503600Y2 (en) | 1990-10-22 | 1990-10-22 | Unit automatic switching mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2503600Y2 (en) |
-
1990
- 1990-10-22 JP JP11038890U patent/JP2503600Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2503600Y2 (en) | 1996-07-03 |
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