CA2320012A1 - System for communicating messages via a forward overhead control channel for a programmable logic control device - Google Patents
System for communicating messages via a forward overhead control channel for a programmable logic control device Download PDFInfo
- Publication number
- CA2320012A1 CA2320012A1 CA002320012A CA2320012A CA2320012A1 CA 2320012 A1 CA2320012 A1 CA 2320012A1 CA 002320012 A CA002320012 A CA 002320012A CA 2320012 A CA2320012 A CA 2320012A CA 2320012 A1 CA2320012 A1 CA 2320012A1
- Authority
- CA
- Canada
- Prior art keywords
- cellular
- control channel
- communications device
- pages
- network control
- 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
Abstract
Communicating commands and/or data to a remote controller, such as a programmable logic controller, coupled to a cellular communications device by sending multiple pages via a cellular network control channel of a cellular mobile radiotelephone system. Each cellular communications device operating within the coverage area of the cellular mobile radiotelephone system can monitor the cellular network control channel for a pair of target pages within a first time period. Each target page includes a specific identifier assigned to one or more of the cellular communications devices. In the event that a cellular communications device receives target pages having a matching specific identifier, the device will monitor the cellular network control channel over a second time period for at least one command page or data page carrying instructions or information for use by the remote controller. The cellular communications device can respond to the reception of one or more command or data pages by forwarding the instructions or information to the controller via a communications link. In addition, the cellular communications device can acknowledge receipt of the data or command pages by issuing an acknowledgment signal formatted as an Autonomous Registration signal via the cellular network control channel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15472499P | 1999-09-20 | 1999-09-20 | |
US60/154,724 | 1999-09-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2320012A1 true CA2320012A1 (en) | 2001-03-20 |
CA2320012C CA2320012C (en) | 2005-11-15 |
Family
ID=22552504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002320012A Expired - Fee Related CA2320012C (en) | 1999-09-20 | 2000-09-18 | System for communicating messages via a forward overhead control channel for a programmable logic control device |
Country Status (4)
Country | Link |
---|---|
AR (1) | AR032595A1 (en) |
BR (1) | BR0005862A (en) |
CA (1) | CA2320012C (en) |
MX (1) | MXPA00009229A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110908345A (en) * | 2019-11-06 | 2020-03-24 | 苏州朗威电子机械股份有限公司 | Monitoring feedback system for server cabinet production |
-
2000
- 2000-09-18 CA CA002320012A patent/CA2320012C/en not_active Expired - Fee Related
- 2000-09-19 AR ARP000104915A patent/AR032595A1/en unknown
- 2000-09-20 BR BR0005862-9A patent/BR0005862A/en not_active IP Right Cessation
- 2000-09-20 MX MXPA00009229A patent/MXPA00009229A/en active IP Right Grant
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110908345A (en) * | 2019-11-06 | 2020-03-24 | 苏州朗威电子机械股份有限公司 | Monitoring feedback system for server cabinet production |
CN110908345B (en) * | 2019-11-06 | 2022-08-05 | 苏州朗威电子机械股份有限公司 | Monitoring feedback system for server cabinet production |
Also Published As
Publication number | Publication date |
---|---|
BR0005862A (en) | 2001-07-24 |
MXPA00009229A (en) | 2003-02-24 |
CA2320012C (en) | 2005-11-15 |
AR032595A1 (en) | 2003-11-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20170918 |