JPS57139816A - Controller having self-checking function - Google Patents
Controller having self-checking functionInfo
- Publication number
- JPS57139816A JPS57139816A JP2641481A JP2641481A JPS57139816A JP S57139816 A JPS57139816 A JP S57139816A JP 2641481 A JP2641481 A JP 2641481A JP 2641481 A JP2641481 A JP 2641481A JP S57139816 A JPS57139816 A JP S57139816A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- checking
- signal line
- generating circuit
- place data
- 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
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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
-
- 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—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Selective Calling Equipment (AREA)
Abstract
PURPOSE:To check data, by providing a word serial signal generating circuit for checking other place data, and sending out a checking signal to a receiving part of the other place data in an area remote from a controller of the same control system, and a signal line. CONSTITUTION:A signal generating circuit for generating a word serial signal for checking an other place data is provided, and when checking said data, the checking signal is sent out to the receiving part and the signal line. For instance, a checking start flag signal is outputted by a checking unit 3, is sent out to a controlling circuit 1 through a signal line 311, and also is sent out to the signal generating circuit 4 through a signal line 312. Subsequently, it is detected that the controlling circuit 1 has entered into a checking state by the signal generating circuit 4, and also a command for switching a changeover switch 401 to the side of a signal line 421 from a signal line 22, through a signal line 319 from the checking unit 3. Subsequently, a word serial bit parallel signal for checking is inputted through the signal line 421 to a receiving part 2 of the other place data, and a signal line 23 and 24, by the signal generating circuit 4, and is checked by the controlling circuit 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2641481A JPS57139816A (en) | 1981-02-25 | 1981-02-25 | Controller having self-checking function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2641481A JPS57139816A (en) | 1981-02-25 | 1981-02-25 | Controller having self-checking function |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57139816A true JPS57139816A (en) | 1982-08-30 |
JPS6325755B2 JPS6325755B2 (en) | 1988-05-26 |
Family
ID=12192883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2641481A Granted JPS57139816A (en) | 1981-02-25 | 1981-02-25 | Controller having self-checking function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57139816A (en) |
-
1981
- 1981-02-25 JP JP2641481A patent/JPS57139816A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6325755B2 (en) | 1988-05-26 |
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