JPS5960603A - Device for detecting service interruption of programmable controller - Google Patents
Device for detecting service interruption of programmable controllerInfo
- Publication number
- JPS5960603A JPS5960603A JP17148482A JP17148482A JPS5960603A JP S5960603 A JPS5960603 A JP S5960603A JP 17148482 A JP17148482 A JP 17148482A JP 17148482 A JP17148482 A JP 17148482A JP S5960603 A JPS5960603 A JP S5960603A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- microprocessor
- programmable controller
- resistor
- comparator
- 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
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14053—Power failure, loss, abnormal battery
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、プログラマブルコントローラに使用されて
いるマイクロプロセッサの電源電圧降下全検出し7でマ
イクロプロセッサをリセットL7停電状態に備えるよう
にし1こプログラマブルコントローラの停電検出装置に
関するt・のである、従来のこの種の停電検出装置とし
ては、外部交流電源の電圧降下を検出して停電に備える
ものがあっ1こ。ところがこの装置では、外部交流電源
全整流(/て電圧降下を検出するものであろ1こめ、被
検出信号lこリップルが大きく、検出精度が悪くなリ4
1=時間によるバラツキも大きい欠点があつTこ。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power failure detection device for a programmable controller, which detects all drops in the power supply voltage of a microprocessor used in a programmable controller, and resets the microprocessor at 7 to prepare for a power failure state.・There is one conventional power outage detection device of this type that detects the voltage drop of an external AC power source and prepares for a power outage. However, in this device, since the external AC power supply is fully rectified (and the voltage drop is detected), the detected signal ripple is large and the detection accuracy is poor.
1=T has the drawback of large variations over time.
この発明は、上記のような従来装置の欠点全除去する1
こめCζ4rされ1こもので、プログラマブルコントロ
ーラ中Cζ使用されているマイクロプロセッサの電#電
圧(DC5V)を監視することにより停電状態ケ精度よ
く検出することができるようにし1こ、プログラマフル
コントローラの停電検出E+ ftケ提供することケ目
的としている。This invention eliminates all the drawbacks of the conventional device as described above.
By monitoring the power voltage (DC5V) of the microprocessor used in the programmable controller, it is possible to accurately detect a power outage state. The purpose is to provide E+ft.
以下1ここの発明を一実施例について詳細(こ説明する
。Hereinafter, one embodiment of the present invention will be described in detail.
図面はこの発明の一実施例の回路図’7’ 3)る。図
面1ζおいて(1)はプログラマブルコンl−ローラ中
に組込まれているマイウロプロセッ→j−1(2)は一
端ヲマイ々ロプロセッサ(1)の電源(3)に接続(7
1こ基準電圧用ゼナータイオードであり、その他端1.
tV&流制限ケ行う基準電圧用抵抗(4)を介し、で接
地されている。(5)、 (6)は第1.第2の被電圧
検出用抵抗、(7)1ま基準電圧と被検出電圧とを比較
するコンパレータであり、図示の如く電源(3)と接地
間1(接続さねでいろ。尚、コンパレーク(7)の+側
端子IJゼナーダイオード(2)と抵抗(4)間に接続
され基準電圧を構成し、−側端子は抵抗(5)と抵抗(
6)間に接続され被検出用の電圧全構成している。まf
コ、コンパレータ(7)の出力はリセット用直列抵抗(
8)71−介しノマイクロプロセッサ(1)のリセット
入力として導入されている。(9)及びθ0は、コンパ
1/−タ(7)からのりセット信号を遅延させる1こめ
の、リセット遅延用コンデンサ及びリセット遅延用抵抗
である。θσはコンパレータ(7)のリセット用出力と
並列に挿入されTこリセット入力用スイッチで序)す、
マニュアル操作によってマイクロプロセッサ(1)をリ
セッ1−する1こめのものである、
次に上記装置の動作Cコついて説明する。コンパレータ
(7)の+側端子「とは、電源電圧から基準電圧用ゼナ
ータイオード(2)と基準電圧用抵抗(4)とによl′
l−M、準電圧が構成さノ]、これが印加さtlている
。The drawing is a circuit diagram '7' 3) of one embodiment of the present invention. In drawing 1ζ, (1) is the microprocessor built into the programmable controller l-roller → j-1 (2) is connected at one end to the power supply (3) of the microprocessor (1) (7
One end is a Zener diode for reference voltage, and the other end is 1.
It is grounded via a reference voltage resistor (4) that performs tV & current restriction. (5) and (6) are the first. The second voltage detection resistor (7) is a comparator that compares the reference voltage and the detected voltage, and as shown in the figure, it is connected between the power supply (3) and the ground (1). 7) is connected between the + side terminal IJ zener diode (2) and the resistor (4) to constitute the reference voltage, and the - side terminal is connected between the resistor (5) and the resistor (4).
6) It is connected between the two and constitutes the entire voltage to be detected. Maf
The output of the comparator (7) is the reset series resistor (
8) 71 - is introduced as a reset input for the microprocessor (1). (9) and θ0 are a reset delay capacitor and a reset delay resistor that delay the set signal from the comparator (7). θσ is inserted in parallel with the reset output of the comparator (7) and connected to the reset input switch.
This is a first step to reset the microprocessor (1) by manual operation. Next, the operation of the above device will be explained. The + side terminal of the comparator (7) is connected to the power supply voltage by the reference voltage zener diode (2) and the reference voltage resistor (4).
l-M, a quasi-voltage is formed], which is applied tl.
ま1こコンパレータ(7ンの一側端子にIが1同様に電
源電圧から第1.第2の被電圧検出用抵抗(5)、 (
6)にまり被検出用の電圧が構成さノ1、これが印加さ
れてイロ。今、コンパレータ(7)の+側端子入力と一
側端子入力1.i、電源電圧が正常(1コとえば5V)
である時バランスし、コンパレータ(7)からの出力か
4「いように設計されている。一方、電源電圧が何らか
のJI因で低下すると、コンパレータ(7〕の十fll
ll端子IJ、セナーダイオード(2)の働き(こまっ
て基準電圧を維持するか、−側端子、即ち被検出用の電
圧は低下し、コンバータ(7)がパランスケ失って出カ
ケ送出する。この出力信号は、抵抗(8)ヲ介し更にリ
セクト遅延用コンテンサ(9)とリセット遅延用抵抗θ
旧こより遅延されてマイクロプロセッサ(1)に導入さ
ね、こ′i′する・リセフトし、停電状態「こ崗、え不
、尚、コンデンサ(9)及び抵抗0(tlこまるリセッ
ト信Y)の遅延1オ、電源電圧の瞬間的l(ふらつきt
こよるリセット信号の発生71防止するTこめのもので
2)ろ。1 comparator (I is 1 on one side terminal of 7) Similarly, from the power supply voltage, the 1st and 2nd voltage detection resistors (5), (
6) The voltage for the detection target is configured, and this is applied. Now, the + side terminal input and the one side terminal input 1 of the comparator (7). i. Power supply voltage is normal (for example, 5V for 1 unit)
It is designed so that the output from the comparator (7) is balanced and the output from the comparator (7) is 4.
The function of the ll terminal IJ and the sensor diode (2) (either to maintain the reference voltage or the negative terminal, that is, the voltage to be detected, decreases, and the converter (7) loses its balance and sends out an output. The signal is passed through the resistor (8) and then to the resect delay capacitor (9) and the reset delay resistor θ.
The introduction to the microprocessor (1) has been delayed since the beginning, and the power outage condition is reset. Delay 1o, instantaneous l(wobble t) of power supply voltage
2) This is a T-type device that prevents the generation of a reset signal.
マ1コマイクロブロセソサ(1)の電源電圧の被検出値
+1、マイクロプロセッサ(1)の動作保証値とし、早
い時点で電圧降下を検出しシステノ・のリセットを行う
。コンパレーク(7)の出力1こ並列1ξ接続さノ]1
こリセット入力用スイッチ(11〕は、このシステムを
マニュアルで操作しり中ツトする1こめの6ので、スイ
ッチ圓に依って発生し1こ出力は、抵抗(8)、リセッ
ト遅延用コンテンサ、抵抗(9)、QUを介してマイク
ロプロセッサ(1)に入力さ第1、こF17Pリセフト
しノ停電状態に備えろ。The detected value of the power supply voltage of the microprocessor (1) + 1 is set as the operation guaranteed value of the microprocessor (1), and a voltage drop is detected at an early point and the system is reset. 1 output of comparator (7) is connected in parallel 1ξ]1
This reset input switch (11) is used to manually operate this system, so the output is generated by the switch circle, and the output is generated by the resistor (8), the reset delay capacitor, and the resistor (6). 9) The first signal input to the microprocessor (1) via QU resets F17P to prepare for a power outage condition.
以上、実施例ケあげて説明ジノ1こまう+r、この発願
にまi’Lばプログラマフルコントローラの電源電圧降
下ケ、外部交流Dtllfaによる電圧降下ケ検出する
場合よりもIJるかfこ高い精度で検出することができ
、プログラマフルコントローラの停[1i”tffしv
、rtやか1こ対応することかできろTこめ、非常に有
用l(装置である。The above is an explanation using an example.In accordance with this application, the accuracy is higher than when detecting the power supply voltage drop of the programmer full controller and the voltage drop due to external AC Dtllfa. The programmer can detect full controller shutdown [1i”tff and v
It is a very useful device that can support , rt, and one other device.
図面titこの発明の一実施例の回路図である。
(1)・・・マイクロプロセッサ、(2)・・・ゼナー
ダイオード、(4L (51,(6トシ抵抗、(7)・
・・電圧検出用コンパレータ、(9)、 (IC)・・
・遅延素子、0η・・・リセット入力用スイッチ。
代理人 葛 野 信 −FIG. 1 is a circuit diagram of an embodiment of the present invention. (1)... Microprocessor, (2)... Zener diode, (4L (51, (6 resistors), (7)...
・Comparator for voltage detection, (9), (IC)・・
・Delay element, 0η...Switch for reset input. Agent Shin Kuzuno −
Claims (4)
て出力を発生する電圧検出用コンパレータと、このコン
パレータ出カケ遅延させろ遅延素子とを備え、遅延され
1こ上記コンパレータ出力を上記マイクロプロセッサに
導入してリセット入力信号とすることケ特徴とするプロ
グラマブルコントローラの停電検出装置。(1) A voltage detection comparator that detects a power supply voltage drop of the microprocessor and generates an output, and a delay element that delays the output of this comparator, and introduces the delayed comparator output into the microprocessor. A power failure detection device for a programmable controller characterized by using a reset input signal.
ロセッサのリセット入力用スイッチを接続し、マニュア
ル操作によっても一マイクロプロセッサのリセ、ントが
行えるようにしたこと7+−特徴とする特許請求の範囲
第1項記載のプログラマブルコントローラの停電検出装
置。(2) A microprocessor reset input switch is connected in parallel to the voltage detection comparator output, so that one microprocessor can be reset by manual operation.7+- Claim 1 A power outage detection device for a programmable controller as described in .
イオード及び抵抗とによって基準電圧を構成し、かつこ
のゼナーダイオード及び抵抗に並列に接続しTコ被電圧
検出用抵抗によって被検出用の電圧を構成し、これら両
型圧を電圧検出用コンパレータの入力信号とすることを
特徴とする特許請求の範囲第1項記載のプログラマブル
コントローラの停電検出装置。(3) Construct a reference voltage from the power supply voltage of the microprocessor with a Zener diode and a resistor, and configure a voltage to be detected with a T voltage detection resistor connected in parallel to the Zener diode and resistor. 2. A power outage detection device for a programmable controller according to claim 1, wherein both type voltages are used as input signals of a voltage detection comparator.
ことケ特徴とする特許請求の範囲第1項記載のプログラ
マブルコントローラの停電検出装置。(4) A power failure detection device for a programmable controller according to claim 1, wherein the delay element is formed of a capacitor and a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17148482A JPS5960603A (en) | 1982-09-30 | 1982-09-30 | Device for detecting service interruption of programmable controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17148482A JPS5960603A (en) | 1982-09-30 | 1982-09-30 | Device for detecting service interruption of programmable controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5960603A true JPS5960603A (en) | 1984-04-06 |
Family
ID=15923954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17148482A Pending JPS5960603A (en) | 1982-09-30 | 1982-09-30 | Device for detecting service interruption of programmable controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5960603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2204706A1 (en) * | 2008-12-31 | 2010-07-07 | LS Industrial Systems Co., Ltd | Data relay apparatus for communication module |
-
1982
- 1982-09-30 JP JP17148482A patent/JPS5960603A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2204706A1 (en) * | 2008-12-31 | 2010-07-07 | LS Industrial Systems Co., Ltd | Data relay apparatus for communication module |
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