Hybrid change of state protocol for CANOpen networks
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-013/24
H04L-012/43
H04L-001/00
출원번호
US-0045723
(2001-10-26)
발명자
/ 주소
White, III, William A.
McLean, James
Hill, Lawrence W.
Rolland, Jean-Francois
Sparks, William D.
출원인 / 주소
Schneider Automation Inc.
인용정보
피인용 횟수 :
3인용 특허 :
10
초록▼
A CANOpen network including a bus master and an I/O module are disclosed. Each are communicatively coupled to a common bus. The I/O module is subject to a state change. The bus master collects state information from the I/O module by sending a state signal from the I/O module to the bus master in re
A CANOpen network including a bus master and an I/O module are disclosed. Each are communicatively coupled to a common bus. The I/O module is subject to a state change. The bus master collects state information from the I/O module by sending a state signal from the I/O module to the bus master in response to a state change of the I/O module, sending a trigger signal from the bus master to the I/O module, and sending a state signal from the I/O module to the bus master in response to the trigger signal.
대표청구항▼
1. For a CANOpen network including a bus master and an I/O module, each communicatively coupled to a common bus, wherein the I/O module is subject to a state change, a method of permitting the bus master to collect state information from the I/O module, the method comprising:sending a state signal f
1. For a CANOpen network including a bus master and an I/O module, each communicatively coupled to a common bus, wherein the I/O module is subject to a state change, a method of permitting the bus master to collect state information from the I/O module, the method comprising:sending a state signal from the I/O module to the bus master in response to a state change of the I/O module; sending a trigger signal from the bus master to the I/O module; and sending a state signal from the I/O module to the bus master in response to the trigger signal. 2. The method of claim 1 including a plurality of I/O modules, each communicatively coupled to the common bus, wherein each of the I/O modules is subject to a state change, the method comprising:sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; sending a trigger signal from the bus master to a selected one of the I/O modules; and sending a state signal from the selected I/O module to the bus master in response to the trigger signal. 3. The method of claim 2 comprising:configuring a plurality of the I/O modules as a group; sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; sending a trigger signal from the bus master to a selected group of the I/O modules; and sending a state signal from each I/O module of the selected group of I/O modules to the bus master in response to the trigger signal. 4. The method of claim 3 wherein the group of I/O modules is less than the total plurality of I/O modules.5. For a CANOpen network including a bus master and a plurality of I/O modules, each communicatively coupled to a common bus, wherein the plurality of I/O modules are configured as a plurality of groups of I/O modules, and each of the I/O modules is subject to a state change, a method of permitting the bus master to collect state information from a selected group of I/O modules, the method comprising:sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; sending a trigger signal from the bus master to the selected group of I/O modules; and sending a state signal from each of the I/O modules in the selected group to the bus master in response to the trigger signal. 6. A CANOpen network comprising:a bus master; an I/O module subject to state changes; a common bus communicatively coupling the bus master and the I/O module, wherein the bus master includes means for sending a trigger signal from the bus master to the I/O module, and the I/O module includes means for sending a state signal to the bus master in response to a state change and means for sending a state signal from the I/O module to the bus master in response to the trigger signal to permit the bus master to collect state information from the I/O module. 7. The network of claim 6 including a plurality of I/O modules, each communicatively coupled to the common bus, wherein each of the I/O modules is subject to a state change, wherein the bus master includes means for sending a trigger to a selected one of the I/O modules, and the I/O modules include includes means for sending a state signal to the bus master in response to a state change and means for sending a state signal from the selected I/O module to the bus master in response to the trigger signal.8. The network of claim 7, wherein:each of the I/O modules includes means for sending a state signal to the bus master in response to a state change; a plurality of the I/O modules are configured as a group; the bus master includes means for sending a trigger signal from the bus master to a selected group of the I/O modules; and each of the I/O modules in the selected group includes means for sending a state signal from each I/O module of the selected group to the bus master in response to the trigger signal. 9. The network of claim 8 wherein the group of I/O modules is less than the total plurality of I/O modules.10. A CANOpen network comprising:a bus master; a plurality of I/O modules subject to state changes, wherein the plurality of I/O modules are configured as a plurality of groups of I/O modules and the plurality of I/O modules include means for sending a state signal to the bus master in response to a state change, and a bus communicatively coupling the bus master and each of the I/O modules, wherein the bus master includes means for sending a trigger signal from the bus master to a selected group of I/O modules; and the each of the I/O modules in the selected group includes means for sending a state signal from each of the I/O modules in the selected group to the bus master in response to the trigger signal. 11. For a CANOpen network including a bus master and an I/O module, each communicatively coupled to a common bus, wherein the I/O module is subject to a state change, a method of permitting the bus master to collect state information from the I/O module, the method comprising:sending a state signal from the I/O module to the bus master in response to a state change of the I/O module; determining if the bus master is prepared to receive further data from the bus; sending a trigger signal from the bus master to the I/O module if the bus master is prepared to receive further data from the bus; and sending a state signal from the I/O module to the bus master in response to the trigger signal. 12. The method of claim 11 including a plurality of I/O modules, each communicatively coupled to the common bus, wherein each of the I/O modules is subject to a state change, the method comprising:sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; determining if the bus master is prepared to receive further data from the bus; sending a trigger signal from the bus master to a selected one of the I/O modules if the bus master is prepared to receive further data from the bus; and sending a state signal from the selected I/O module to the bus master in response to the trigger signal. 13. The method of claim 12 comprising:configuring a plurality of the I/O modules as a group; sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; determining if the bus master is prepared to receive further data from the bus; sending a trigger signal from the bus master to a selected group of the I/O modules if the bus master is prepared to receive further data from the bus; and sending a state signal from each I/O module of the selected group of I/O modules to the bus master in response to the trigger signal. 14. The method of claim 13 wherein the group of I/O modules is less than the total plurality of I/O modules.15. For a CANOpen network including a bus master and a plurality of I/O modules, each communicatively coupled to a common bus, wherein the plurality of I/O modules are configured as a plurality of groups of I/O modules, and each of the I/O modules is subject to a state change, a method of permitting the bus master to collect state information from a selected group of I/O modules, the method comprising:sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; determining if the bus master is prepared to receive further data from the bus; sending a trigger signal from the bus master to the selected group of I/O modules if the bus master is prepared to receive further data from the bus; and sending a state signal from each of the I/O modules in the selected group to the bus master in response to the trigger signal. 16. A CANOpen network comprising:a bus master; an I/O module subject to state changes; a common bus communicatively coupling the bus master and the I/O module, wherein the bus master includes means for sending a trigger signal from the bus master to the I/O module when the bus master is prepared to receive further data from the bus, and the I/O module includes means for sending a state signal to the bus master in response to a state change and means for sending a state signal from the I/O module to the bus master in response to the trigger signal to permit the bus master to collect state information from the I/O module. 17. The network of claim 16 including a plurality of I/O modules, each communicatively coupled to the common bus, wherein each of the I/O modules is subject to a state change, wherein the bus master includes means for sending a trigger to a selected one of the I/O modules when the bus master is prepared to receive further data from the bus, and the I/O modules include means for sending a state signal to the bus master in response to a state change and means for sending a state signal from the selected I/O module to the bus master in response to the trigger signal.18. The network of claim 17, wherein:each of the I/O modules includes means for sending a state signal to the bus master in response to a state change; a plurality of the I/O modules are configured as a group; the bus master includes means for sending a trigger signal from the bus master to a selected group of the I/O modules when the bus master is prepared to receive further data from the bus; and each of the I/O modules in the selected group includes means for sending a state signal from each I/O module of the selected group to the bus master in response to the trigger signal. 19. The network of claim 18 wherein the group of I/O modules is less than the total plurality of I/O modules.20. A CANOpen network comprising:a bus master; a plurality of I/O modules subject to state changes, wherein the plurality of I/O modules are configured as a plurality of groups of I/O modules and the plurality of I/O modules include means for sending a state signal to the bus master in response to a state change; and a bus communicatively coupling the bus master and each of the I/O modules, wherein the bus master includes means for sending a trigger signal from the bus master to a selected group of I/O modules when the bus master is prepared to receive further data from the bus; and the each of the I/O modules in the selected group includes means for sending a state signal from each of the I/O modules in the selected group to the bus master in response to the trigger signal. 21. For a CANOpen network including a bus master and an I/O module, each communicatively coupled to a common bus, wherein the I/O module is subject to a state change, a computer readable medium containing program instructions for execution by the bus master to cause the bus master to perform steps for collecting state information from the I/O module, the method comprising:sending a state signal from the I/O module to the bus master in response to a state change of the I/O module; sending a trigger signal from the bus master to the I/O module; and collecting a state signal from the I/O module sent by the I/O module in response to the trigger signal. 22. For a CANOpen network including a bus master and a plurality of I/O modules, each communicatively coupled to a common bus, wherein the plurality of I/O modules are configured as a plurality of groups of I/O modules, and each of the I/O modules is subject to a state change, a computer readable medium containing program instructions for execution by the bus master to cause the bus master to perform steps for collecting state information from a selected group of I/O modules, the method comprising:sending a state signal from each of the I/O modules to the bus master in response to a state change of the particular I/O module; sending a trigger signal from the bus master to the selected group of I/O modules; and collecting a state signal from each of the I/O modules in the selected group sent by the I/O modules in the selected group in response to the trigger signal.
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