Slave units and network system as well as slave unit...

Details Slave units and network system as well as slave unit... Slave units and network system as well as slave unit...

2008-05-06

2008-05-06

Knight, Anthony (Department: 2121)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Plural processors

C089S001560, C356S459000, C709S208000, C709S209000, C709S210000, C709S211000, C710S110000

Reexamination Certificate

active

07369902

ABSTRACT:
A network system is constructed by connecting a safety PLC constituting a master unit and safety slaves2to each other through a safety network3. The safety slaves each have a device information storage unit25for storing individual information and status information of the safety devices connected. The individual information is acquired and stored in advance, while the stored contents of the status information are updated based on the result of monitoring the status of the safety devices in operation. These processes are executed by a MPU23. In response to a request from the safety PLC, the device information stored are transmitted, so that the safety PLC can collect and manage the device state as well as the normal state of the slave units.

REFERENCES:
patent: 3803974 (1974-04-01), Everest et al.
patent: 4625308 (1986-11-01), Kim et al.
patent: 4715031 (1987-12-01), Crawford et al.
patent: 4750171 (1988-06-01), Kedar et al.
patent: 5059953 (1991-10-01), Parsons et al.
patent: 5130716 (1992-07-01), Kleiber
patent: 5157780 (1992-10-01), Stewart et al.
patent: 5206835 (1993-04-01), Beauducel
patent: 5218680 (1993-06-01), Farrell et al.
patent: 5282127 (1994-01-01), Mii
patent: 5363194 (1994-11-01), Killpatrick et al.
patent: 5400018 (1995-03-01), Scholl et al.
patent: 5519607 (1996-05-01), Tawil
patent: 5572195 (1996-11-01), Heller et al.
patent: 5732094 (1998-03-01), Petersen et al.
patent: 5786996 (1998-07-01), Vitkus et al.
patent: 5841654 (1998-11-01), Verissimo et al.
patent: 5850338 (1998-12-01), Fujishima
patent: 5907689 (1999-05-01), Tavallaei et al.
patent: 5933675 (1999-08-01), Sawada et al.
patent: 5995916 (1999-11-01), Nixon et al.
patent: 6026348 (2000-02-01), Hala
patent: 6154726 (2000-11-01), Rensimer et al.
patent: 6347252 (2002-02-01), Behr et al.
patent: 6353615 (2002-03-01), Bohne
patent: 6353867 (2002-03-01), Qureshi et al.
patent: 6389480 (2002-05-01), Kotzur et al.
patent: 6473811 (2002-10-01), Onsen
patent: 6477335 (2002-11-01), Surya et al.
patent: 6507804 (2003-01-01), Hala et al.
patent: 6532508 (2003-03-01), Heckel et al.
patent: 6574234 (2003-06-01), Myer et al.
patent: 6577918 (2003-06-01), Roth
patent: 6640268 (2003-10-01), Kumar
patent: 6708072 (2004-03-01), Arima et al.
patent: 6762684 (2004-07-01), Camhi
patent: 6832343 (2004-12-01), Rupp et al.
patent: 7152188 (2006-12-01), Meyer-Graefe et al.
patent: 2001/0037267 (2001-11-01), Sato et al.
patent: 2002/0082060 (2002-06-01), Kang et al.
patent: 2002/0129033 (2002-09-01), Hoxie et al.
patent: 2003/0009610 (2003-01-01), Nolan et al.
patent: 2003/0037170 (2003-02-01), Zeller et al.
patent: 2003/0114288 (2003-06-01), Harding et al.
patent: 2003/0148760 (2003-08-01), Takayanagi
patent: 2004/0018817 (2004-01-01), Kanayama et al.
patent: 2004/0125821 (2004-07-01), Kuhl
patent: 2004/0181296 (2004-09-01), Muneta et al.
patent: 2004/0210323 (2004-10-01), Muneta et al.
patent: 2004/0210326 (2004-10-01), Muneta et al.
patent: 2004/0210329 (2004-10-01), Chen et al.
patent: 2004/0210620 (2004-10-01), Muneta et al.
patent: 2004/0215354 (2004-10-01), Nakamura et al.
patent: 2005/0017875 (2005-01-01), Nakayama et al.
patent: 0905594 (1999-03-01), None
patent: 2267984 (1993-12-01), None
patent: 2307068 (1997-05-01), None
patent: 2 347 234 (2000-08-01), None
patent: 60-062482 (1985-04-01), None
patent: 03-116395 (1991-05-01), None
patent: 04-045697 (1992-02-01), None
patent: 05-37980 (1993-02-01), None
patent: 6-324719 (1995-10-01), None
patent: 7-282090 (1995-10-01), None
patent: 08-211792 (1996-08-01), None
patent: 11-24744 (1999-01-01), None
patent: 2000-259215 (2000-09-01), None
patent: 2000-269996 (2000-09-01), None
patent: 2001-83002 (2001-03-01), None
patent: 2001-084014 (2001-03-01), None
patent: 2002-71519 (2002-03-01), None
patent: 2002-73121 (2002-03-01), None
patent: WO99/67690 (1999-12-01), None
patent: WO 00/68660 (2000-11-01), None
patent: WO 02/098065 (2002-12-01), None
Asthana et al.; US Statutory Invention Registration No. H001,882; Asthana et al.; Oct. 3, 2000.

Affiliated with

Also associated with

Rating

Slave units and network system as well as slave unit... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Slave units and network system as well as slave unit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slave units and network system as well as slave unit... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2746718