JPH0482701U - - Google Patents
Info
- Publication number
- JPH0482701U JPH0482701U JP12433090U JP12433090U JPH0482701U JP H0482701 U JPH0482701 U JP H0482701U JP 12433090 U JP12433090 U JP 12433090U JP 12433090 U JP12433090 U JP 12433090U JP H0482701 U JPH0482701 U JP H0482701U
- Authority
- JP
- Japan
- Prior art keywords
- control device
- control
- abnormality
- output signal
- abnormal
- 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
- Feedback Control In General (AREA)
- Safety Devices In Control Systems (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
第１図の動作を示す図、第３図は従来技術を示す
図、第４図は第３図の動作を示す図である。
４，１１……スイツチ、１０……出力回路、１
２，１３……ダイオード、１８……記憶素子、１
９……制御回路。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing the operation of FIG. 1, FIG. 3 is a diagram showing the prior art, and FIG. 4 is a diagram showing the operation of FIG. 3. be. 4, 11...Switch, 10...Output circuit, 1
2, 13...Diode, 18...Storage element, 1
9...Control circuit.
Claims (1)
力信号を受信し、操作端に再出力、あるいはダイ
オードを介して直接操作端に出力し、制御装置が
異常時に制御装置の異常を知らせる異常通報信号
により回路を切替え異常となる直前の制御出力信
号を操作端に出力することにより、制御装置異常
時に制御出力信号をバツクアツプするプロセス制
御装置のバツクアツプ装置において、制御装置か
らの制御出力信号のトレンドデータをあるサンプ
リング周期で記憶する複数の記憶素子と、この記
憶素子を制御する制御回路を設け、制御装置から
の異常通報信号を受信した時に何周期前のデータ
を出力するかを設定できるようにすることにより
、制御装置の特性に合わせてこの設定を行い、制
御装置の異常時には異常となる前の正常値を必ず
出力することを特徴とするプロセス制御装置のバ
ツクアツプ装置。 When the control device is normal, it receives the control output signal from the control device and re-outputs it to the operating end, or outputs it directly to the operating end via a diode, and when the control device is abnormal, it sends an abnormality notification signal to notify the abnormality of the control device. By switching the circuit and outputting the control output signal just before the abnormality occurs to the operating terminal, trend data of the control output signal from the control device can be stored in the backup device of the process control device, which backs up the control output signal when the control device is abnormal. By providing a plurality of memory elements that store data at sampling intervals and a control circuit that controls these memory elements, it is possible to set how many cycles ago data is to be output when an abnormality notification signal is received from the control device. A backup device for a process control device, characterized in that the settings are made according to the characteristics of the control device, and when an abnormality occurs in the control device, the normal value before the abnormality is always output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12433090U JPH0482701U (en) | 1990-11-28 | 1990-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12433090U JPH0482701U (en) | 1990-11-28 | 1990-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0482701U true JPH0482701U (en) | 1992-07-17 |
Family
ID=31871988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12433090U Pending JPH0482701U (en) | 1990-11-28 | 1990-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0482701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8919594B2 (en) | 2007-01-31 | 2014-12-30 | Sands Innovations Pty Ltd | Dispensing container |
-
1990
- 1990-11-28 JP JP12433090U patent/JPH0482701U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8919594B2 (en) | 2007-01-31 | 2014-12-30 | Sands Innovations Pty Ltd | Dispensing container |
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