JPS644812A - Sequence controller with abnormal part display function - Google Patents

Sequence controller with abnormal part display function

Info

Publication number
JPS644812A
JPS644812A JP62159618A JP15961887A JPS644812A JP S644812 A JPS644812 A JP S644812A JP 62159618 A JP62159618 A JP 62159618A JP 15961887 A JP15961887 A JP 15961887A JP S644812 A JPS644812 A JP S644812A
Authority
JP
Japan
Prior art keywords
program
variable
execution
abnormality
step number
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
Application number
JP62159618A
Other languages
Japanese (ja)
Inventor
Junichi Hamano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62159618A priority Critical patent/JPS644812A/en
Publication of JPS644812A publication Critical patent/JPS644812A/en
Pending legal-status Critical Current

Links

Landscapes

  • Testing And Monitoring For Control Systems (AREA)
  • Debugging And Monitoring (AREA)
  • Programmable Controllers (AREA)

Abstract

PURPOSE:To facilitate the analysis of the cause of an abnormality, and to improve the degree of definite decision of the cause, by displaying automatically a program retrieval at the time of causing abnormality, and a check of an input and an output, by the device. CONSTITUTION:When an abnormality condition is formed, a monitoring part 19 records a step number of a program which is executed, in a step No. register 21, and simultaneously, issues an instruction to an executing part 16 so as to stop an execution of the program. Subsequently, an analyzing part 22 receives the step number from the step No. register 21, fetches the contents of the execution program shown by the step number, from an execution program storage part 15 by a step unit and retrieves a variable used therein. Also, a value of the retrieved variable is read out of an input/output storage part 17. Subsequently, the fetched execution program is restored to a format of the time when it is inputted by a reverse converting part 23. In the end, said restored program variable and the variable value are displayed on a display part 12.
JP62159618A 1987-06-29 1987-06-29 Sequence controller with abnormal part display function Pending JPS644812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62159618A JPS644812A (en) 1987-06-29 1987-06-29 Sequence controller with abnormal part display function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62159618A JPS644812A (en) 1987-06-29 1987-06-29 Sequence controller with abnormal part display function

Publications (1)

Publication Number Publication Date
JPS644812A true JPS644812A (en) 1989-01-10

Family

ID=15697653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62159618A Pending JPS644812A (en) 1987-06-29 1987-06-29 Sequence controller with abnormal part display function

Country Status (1)

Country Link
JP (1) JPS644812A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03154102A (en) * 1989-11-10 1991-07-02 Yokogawa Electric Corp Distributed sequence control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03154102A (en) * 1989-11-10 1991-07-02 Yokogawa Electric Corp Distributed sequence control system

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