Abnormality monitor method and abnormality monitor system in a network
AssigneeYazaki Corporation
InventorsAkira Norizuki, Katsumi Murakami, Hiroshi Nishiyama, Katsutoshi Nakajima
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Abstract
In an abnormality monitor system of a network, when it is determined that a data transmission function is impaired as a data transmission line is broken or an abnormality occurs in a communication IC, a CPU sends abnormality occurrence information indicating abnormality occurrence and the abnormality occurrence point from a slave station unit to a master station unit through a communication line provided separately from the data transmission line.
Claims18
A network abnormality monitor method in a network comprising a plurality of station units connected by a ring-like main data transmission line enabling circular transmission of communication data in digital form and adopting a master slave method as a communication method, wherein said plurality of station units are comprised of one master station unit operating as a master and slave station units operating as slaves, wherein said network comprises at least one sub data transmission line being provided separately from the main data transmission line for connecting said station units, and wherein each of said station units perform the steps of:
- executing monitor processing of monitoring a communication state in said network;
- executing abnormality determination processing of determining whether or not the communication state in said network is abnormal upon reception of a monitor processing result;
- and
- when it is determined that the communication state in said network is abnormal as a result of the abnormality determination processing, executing abnormality occurrence notification processing of sending abnormality occurrence information indicating abnormality occurrence and an abnormality occurrence point to said master station unit through the sub data transmission line.
A network abnormality monitor method in a network comprising a plurality of station units connected by a ring-like data transmission line enabling circular transmission of communication data in digital form and adopting a master slave method as a communication method, wherein said plurality of station units are comprised of one master station unit operating as a master and slave station units operating as slaves, wherein said network comprises at least one sub data transmission line being provided separately from the data transmission line for connecting said master station unit and said slave station units in a one-to-one correspondence, and wherein each of said station units performs the steps of:
- executing monitor processing of monitoring a communication state in said network;
- executing abnormality determination processing of determining whether or not the communication state in said network is abnormal upon reception of a monitor processing result;
- and
- when it is determined that the communication state in said network is abnormal as a result of the abnormality determination processing, executing abnormality occurrence notification processing of sending abnormality occurrence information indicating abnormality occurrence and an abnormality occurrence point to said master station unit through the sub data transmission line.
A network abnormality monitor system in a network comprising a plurality of station units connected by a ring-like main data transmission line enabling circular transmission of communication data in digital form and adopting a master slave method as a communication method,
- wherein said plurality of station units comprises one master station unit operating as a master and slave station units operating as slaves,
- wherein said network comprises at least one sub data transmission line being provided separately from the main data transmission line for connecting said station units, and
- wherein each of said station units comprises:
- monitor means for executing monitor processing of monitoring a communication state in said network;
- abnormality determination means for executing abnormality determination processing of determining whether or not the communication state in said network is abnormal upon reception of a monitor processing result of said monitor means;
- and
- abnormality occurrence notification means for executing abnormality occurrence notification processing of sending abnormality occurrence information indicating abnormality occurrence and an abnormality occurrence point to said master station unit through the sub data transmission line when it is determined that the communication state in said network is abnormal as a result of the abnormality determination processing of said abnormality determination means.
A network abnormality monitor system in a network comprising a plurality of station units connected by a ring-like data transmission line enabling circular transmission of communication data in digital form and adopting a master slave method as a communication method,
- wherein said plurality of station units comprises one master station unit operating as a master and slave station units operating as slaves,
- wherein said network comprises at least one sub data transmission line being provided separately from the data transmission line for connecting said matter station unit and said slave station units in a one-to-one correspondence, and
- wherein each of said station units comprises:
- monitor means for executing monitor processing of monitoring a communication state in said network;
- abnormality determination means for executing abnormality determination processing of determining whether or not the communication state in said network is abnormal upon reception of a monitor processing result of said monitor means;
- and
- abnormality occurrence notification means for executing abnormality occurrence notification processing of sending abnormality occurrence information indicating abnormality occurrence and an abnormality occurrence point to said master station unit through the sub data transmission line when it is determined that the communication state in said network is abnormal as a result of the abnormality determination processing of said abnormality determination means.
Dependencies are inferred from the claim text.