JPS553049A - Sequence controller - Google Patents
Sequence controllerInfo
- Publication number
- JPS553049A JPS553049A JP7523878A JP7523878A JPS553049A JP S553049 A JPS553049 A JP S553049A JP 7523878 A JP7523878 A JP 7523878A JP 7523878 A JP7523878 A JP 7523878A JP S553049 A JPS553049 A JP S553049A
- Authority
- JP
- Japan
- Prior art keywords
- time
- ram6
- rom4
- ram5
- memorized
- 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
- Testing And Monitoring For Control Systems (AREA)
Abstract
PURPOSE:To secure emission of the alarm in case the normal sequence control becomes impossible for the controlled unit due to some fault. CONSTITUTION:ROM4, RAM5, RAM6, input circuit 7 and output circuit 8 are connected to CPU2 via data bus 3. CPU2 performs the data transfer for the register based on the program composed of the main routine memorized in ROM4 and the timer interruption process routine as well as the control for input/output circuits 7 and 8. The maximum time required for the operation of all steps of the controlled unit is set and memorized in RAM5 and then compared with the time counted at RAM6 with every step. And when a coincidence is secured between the maximum set time and the counted time, the occurrence of the fault is decided to emit the alarm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7523878A JPS553049A (en) | 1978-06-20 | 1978-06-20 | Sequence controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7523878A JPS553049A (en) | 1978-06-20 | 1978-06-20 | Sequence controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS553049A true JPS553049A (en) | 1980-01-10 |
Family
ID=13570431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7523878A Pending JPS553049A (en) | 1978-06-20 | 1978-06-20 | Sequence controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS553049A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5775315A (en) * | 1980-10-29 | 1982-05-11 | Fanuc Ltd | Numerical control system |
JPS57169809A (en) * | 1981-04-13 | 1982-10-19 | Omron Tateisi Electronics Co | Programmable logic controller |
JPS57189205A (en) * | 1981-05-15 | 1982-11-20 | Toyota Motor Corp | Sequence controller |
-
1978
- 1978-06-20 JP JP7523878A patent/JPS553049A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5775315A (en) * | 1980-10-29 | 1982-05-11 | Fanuc Ltd | Numerical control system |
JPS57169809A (en) * | 1981-04-13 | 1982-10-19 | Omron Tateisi Electronics Co | Programmable logic controller |
JPS57189205A (en) * | 1981-05-15 | 1982-11-20 | Toyota Motor Corp | Sequence controller |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS61500570A (en) | Method for monitoring electronic computing modules such as microprocessors | |
JPS553049A (en) | Sequence controller | |
JPS57157374A (en) | Remote test controlling system | |
JPS575162A (en) | Redundant system controller | |
JPS559248A (en) | Bus control unit of common input and output | |
JPS5495133A (en) | Input/output processing control system | |
JPS5451745A (en) | Automatic power supply cut-off controlling unit | |
JPS5324743A (en) | Bus selector for electronic computer | |
JPS5727322A (en) | Input and output controlling system of computer | |
JPS57143606A (en) | Scanning type programmable controller | |
JPS5720847A (en) | Computer system | |
JPS5647846A (en) | Parity check system | |
JPS5650424A (en) | Coupling device for microcomputer and its input/output device | |
JPS55116156A (en) | Multiple access unit for external memory unit | |
JPS5495145A (en) | System check system | |
JPS57136214A (en) | Plant monitor controller | |
JPS5461441A (en) | Digital control unit | |
JPS5663613A (en) | Operation check circuit of magnetic flux control unit | |
JPS5652474A (en) | Triple process control system | |
JPS5769309A (en) | Programmable logic controller | |
JPS6442758A (en) | Input and output control system | |
JPS5739403A (en) | Sequence control device | |
JPS5461846A (en) | Data input processing system | |
JPS5614310A (en) | Interrupt control circuit in sequence controller | |
JPH0331951A (en) | Input/output controller |