EP0389991A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and system for restarting sequentially controlled equipment installed in a production line
Assignee: Mazda Motor Corp
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Filing: 1990-03-23
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Granted: —
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Expires: 2010-03-23
Abstract
Abstract A method and a system for restarting sequentially controlled equipment installed in a production line when the equipment is out of order. In this method, operations of the equipment are divided into a plurality of operation blocks, operations of each of which are executed independently of those in any other block. Each of the operation blocks are further divided into one or a series of operation steps to be sequentially executed in a predetermined order under a normal. condition. At least one home position from which the equipment can be restarted is set in each operation block. An output element which has caused failure and is now stopped is restored to the home position after a cause of failure is removed.
Inventors
- 👤 Shunji Sakamoto
- 👤 Toshihiko Hoshino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 20:33
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/05; G05B19/058; G05B2219/00; G05B2219/10; G05B2219/13; G05B2219/13068; G05B2219/14; G05B2219/14138
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
117 words
A method of restarting sequentially controlled equipment installed in a production line when the equipment is out of order, said method comprising the steps of: dividing operations of said equipment into a plurality of operation blocks, operations in each operation block being executed independently of operations in any other block; dividing each of said operation blocks into one or a series of operation steps to be sequentially executed in a predetermined order under a normal condition; setting in each operation block at least one home position from which the equipment can be restarted; and restoring an output element which has caused failure and is now stopped to the home position after a cause of failure is removed.
Claim 2
Independent Claim
117 words
A method of restarting sequentially controlled equipment installed in a production line when the equipment is out of order, said method comprising the steps of: dividing operations of said equipment into a plurality of operation blocks, operations in each operation block being executed independently of operations in any other block; dividing each of said operation blocks into one or a series of operation steps to be sequentially executed in a predetermined order under a normal condition; setting in each operation block at least one home position from which the equipment can be restarted; and restoring an output element which has caused failure and is now stopped to the home position after a cause of failure is removed.
Claim 3
Dependent Claim
34 words
The method according to claim 1, wherein said home position of each operation block is set to a position from which the operation block can be restarted after the cause of failure is removed.
Claim 4
Dependent Claim
31 words
The method according to claim 2, wherein said home position is set to a terminal operation step of each operation block at which the operations of the operation block is terminated.
Claim 5
Dependent Claim
31 words
The method according to claim 2, wherein said home position is set to an initial operation step of each operation block from which the operations of the operation block is started.
Claim 6
Dependent Claim
20 words
The method according to claim 1, further comprising the step of restarting a sequence control with respect to the equipment.
Claim 7
Dependent Claim
54 words
The method according to claim 1, further comprising the step of specifying an operation step which has caused failure as a fault operation step, the step of specifying an operation block including the fault operation step as a fault operation block, and the step of restoring the fault operation step to the home position.
Claim 8
Dependent Claim
64 words
The method according to claim 6, further comprising the step of specifying operation elements to be operated so that operation steps from the fault operation step to the home position are successively advanced, and the step of restarting a sequence control with respect to the equipment after the fault operation block reaches the home position by successively operating the operation elements to be operated.
Claim 9
Dependent Claim
45 words
The method according to claim 7, further comprising the step of specifying control elements to be manipulated for operation of the operation elements, and the step of displaying each specified control element under an operable condition in which the specified control element is made operable.
Claim 10
Independent Claim
226 words
A system for restarting sequentially controlled equipment installed in a production line when the equipment is out of order, said system comprising: fault operation block specifying means for specifying an operation block, as a fault operation block, which is stopped at the time an operation step thereof is stopped without reaching a restorable operation step from which the equipment can be restarted after an operation element which has caused a failure is restored to a normal condition; control element specifying means for specifying operation elements to be operated so that steps from the fault operation step to the restorable operation step is successively advanced and for specifying control elements to be manipulated to operate the specified operation elements; control element displaying means for displaying each control element specified by the control element specifying means in an operable condition in which the specified control element is made operable so that the control element specifying means causes the specified operation element to be operated by manipulating the control element; operation step advancing means for successively advancing the steps from the fault operation step to the restorable operation step, each time the operation elements are operated so that the fault operation block reaches the restorable step; and restarting means for restarting a sequence control with respect to the equipment when the fault operation block reaches the restorable operation step.
Claim 11
Independent Claim
226 words
A system for restarting sequentially controlled equipment installed in a production line when the equipment is out of order, said system comprising: fault operation block specifying means for specifying an operation block, as a fault operation block, which is stopped at the time an operation step thereof is stopped without reaching a restorable operation step from which the equipment can be restarted after an operation element which has caused a failure is restored to a normal condition; control element specifying means for specifying operation elements to be operated so that steps from the fault operation step to the restorable operation step is successively advanced and for specifying control elements to be manipulated to operate the specified operation elements; control element displaying means for displaying each control element specified by the control element specifying means in an operable condition in which the specified control element is made operable so that the control element specifying means causes the specified operation element to be operated by manipulating the control element; operation step advancing means for successively advancing the steps from the fault operation step to the restorable operation step, each time the operation elements are operated so that the fault operation block reaches the restorable step; and restarting means for restarting a sequence control with respect to the equipment when the fault operation block reaches the restorable operation step.
References Cited (Backward Citations)
No citation records indexed.
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