JPH02145445U - - Google Patents
Info
- Publication number
- JPH02145445U JPH02145445U JP5404189U JP5404189U JPH02145445U JP H02145445 U JPH02145445 U JP H02145445U JP 5404189 U JP5404189 U JP 5404189U JP 5404189 U JP5404189 U JP 5404189U JP H02145445 U JPH02145445 U JP H02145445U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current
- fault
- photocoupler
- state
- 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
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
Description
第１図は本考案の一実施例を示す回路図であり
、第２図はフローチヤートである。
２…リレー、３…フイールド接点、５…フオト
カプラ、６…波形成形ＩＣ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a flowchart. 2...Relay, 3...Field contact, 5...Photocoupler, 6...Waveform shaping IC.
Claims (1)
流に変換する回路と、そのＤＣ電流によりオン・
オフするフオトカプラと、そのフオトカプラ出力
のＴＴＬレベル変換及び波形成形を行う回路と、
同回路の故障検出を行うための故障検出用のリレ
ーと、このリレーを計算機のデジタル出力でドラ
イブするための回路と、故障検出時の電流の逆流
を防止するダイオードとを有することを特徴とす
る計算機のデジタル入力インターフエース。 A circuit that converts the on/off state of the field's no-voltage contact into DC current, and the on/off state using the DC current.
A photocoupler to be turned off, a circuit for TTL level conversion and waveform shaping of the photocoupler output,
It is characterized by having a fault detection relay for detecting a fault in the circuit, a circuit for driving this relay with a digital output of a computer, and a diode for preventing reverse flow of current when a fault is detected. Calculator digital input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5404189U JPH02145445U (en) | 1989-05-11 | 1989-05-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5404189U JPH02145445U (en) | 1989-05-11 | 1989-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02145445U true JPH02145445U (en) | 1990-12-10 |
Family
ID=31575751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5404189U Pending JPH02145445U (en) | 1989-05-11 | 1989-05-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02145445U (en) |
-
1989
- 1989-05-11 JP JP5404189U patent/JPH02145445U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02145445U (en) | ||
| JPH0392542U (en) | ||
| JPH02142979U (en) | ||
| JPH0255180U (en) | ||
| JPH0339384U (en) | ||
| JPH01149624U (en) | ||
| JPH0233558U (en) | ||
| JPS6355644U (en) | ||
| JPH0334345U (en) | ||
| JPH0314929U (en) | ||
| JPS6261542U (en) | ||
| JPS6390332U (en) | ||
| JPS5866364U (en) | AC input detection circuit | |
| JPH02141131U (en) | ||
| JPH03117386U (en) | ||
| JPH0321987U (en) | ||
| JPH031455U (en) | ||
| JPS6261543U (en) | ||
| JPH01135378U (en) | ||
| JPS62101335U (en) | ||
| JPH0366222U (en) | ||
| JPH02125534U (en) | ||
| JPS6174105U (en) | ||
| JPS61154026U (en) | ||
| JPS5822093U (en) | Inverter protection device |