Patent EP0092312A2 successfully refreshed from Google Patents.
EP0092312A2
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EP
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Method and apparatus for displaying ladder diagrams
Assignee: Fanuc Corp
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Filing: 1983-03-11
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Granted: —
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Expires: 2003-03-11
Abstract
Abstract An apparatus for displaying a ladder diagram in a numerical control system having a programmable sequence controller function in which sequence processing is executed based on a sequence program to deliver commands from a numerical control device to a machine and signals from the machine to the numerical control device, as well as a function for displaying the sequence program in the form of a ladder diagram composed of at least relays, and for displaying storage locations of a data memory at each of which an operating state of a respective relay is stored, each storage location appearing in the vicinity of the relay corresponding thereto. Corresponding relationships are established between data memory locations storing the states (logical «1» or logical «0») of relays, and the identifications of the relays. The corresponding relationships are stored in memory. Then, by using these corresponding relationships, the identification of a desired relay is found and is displayed along with the relay, the identification appearing in the vicinity of the relay.
Inventors
- 👤 Hidetsugu Komiya
- 👤 Shinichi Isobe
- 👤 Kazuo Sawada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 06:59
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/05; G05B19/056; G05B2219/00; G05B2219/10; G05B2219/13; G05B2219/13048
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
192 words
A method of displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from numerical control means to a machine and signals from the machine to the numerical control means, as well as a function for displaying the sequence program in the form of a ladder diagram comprising at least relays, and for displaying storage locations of a data memory at each of which an operating state of a respective relay is stored, each storage location appearing in the vicinity of the relay corresponding thereto, said method comprising the steps of: (a) storing in memory a corresponding relationship between each storage location at which the operating state of a respective relay is stored, and an identification of said relay; (b) displaying a ladder diagram based on the sequence program and obtaining an identification of a relay by using the corresponding relationships and storage locations which are operands of respective instructions constituting the sequence program; and (c) displaying a ladder diagram having the obtained relay identification appearing in the vicinity of the corresponding relay.
Claim 2
Independent Claim
192 words
A method of displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from numerical control means to a machine and signals from the machine to the numerical control means, as well as a function for displaying the sequence program in the form of a ladder diagram comprising at least relays, and for displaying storage locations of a data memory at each of which an operating state of a respective relay is stored, each storage location appearing in the vicinity of the relay corresponding thereto, said method comprising the steps of: (a) storing in memory a corresponding relationship between each storage location at which the operating state of a respective relay is stored, and an identification of said relay; (b) displaying a ladder diagram based on the sequence program and obtaining an identification of a relay by using the corresponding relationships and storage locations which are operands of respective instructions constituting the sequence program; and (c) displaying a ladder diagram having the obtained relay identification appearing in the vicinity of the corresponding relay.
Claim 3
Dependent Claim
23 words
The method according to claim 1, in which the operating state of a relay is represented by one-bit logic of "1" or "0".
Claim 4
Dependent Claim
20 words
The method according to claim 2, in which a storage location is specified by an address and a bit position.
Claim 5
Independent Claim
214 words
An apparatus for displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from numerical control means to a machine and signals from the machine to the numerical control means, as well as a function for displaying the sequence program in the form of a ladder diagram comprising at least relays, and for displaying storage locations of a data memory at each of which an operating state of a respective relay is stored, each storage location appearing in the vicinity of the relay corresponding thereto, said apparatus comprising: (a) a first memory storing the sequence program; (b) a second memory for storing a corresponding relationship between each storage location at which the operating state of a respective relay is stored, and an identification of said relay; (c) means for retrieving an identification of a relay by using the corresponding relationships and said storage locations which are operands of instructions constituting the sequence program; and (d) display means for displaying a ladder diagram based on the sequence program and for displaying, in the vicinity of a corresponding relay, the retrieved relay identification and the storage location at which the operating state of said relay is stored.
Claim 6
Independent Claim
214 words
An apparatus for displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from numerical control means to a machine and signals from the machine to the numerical control means, as well as a function for displaying the sequence program in the form of a ladder diagram comprising at least relays, and for displaying storage locations of a data memory at each of which an operating state of a respective relay is stored, each storage location appearing in the vicinity of the relay corresponding thereto, said apparatus comprising: (a) a first memory storing the sequence program; (b) a second memory for storing a corresponding relationship between each storage location at which the operating state of a respective relay is stored, and an identification of said relay; (c) means for retrieving an identification of a relay by using the corresponding relationships and said storage locations which are operands of instructions constituting the sequence program; and (d) display means for displaying a ladder diagram based on the sequence program and for displaying, in the vicinity of a corresponding relay, the retrieved relay identification and the storage location at which the operating state of said relay is stored.
Claim 7
Dependent Claim
57 words
The apparatus according to claim 4, in which said display means has means for dividing one line into an identification display area, a symbolic display area and an address display area and for generating picture information for each display area, one line of picture information being made up of the picture information in the three display areas.
References Cited (Backward Citations)
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