Mark Short

Redundant Owner field in Network Connection Parameters

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In the Forward Open message of EtherNet/IP, there are two Network Connection Parameters, one for Originator->Target, the other for Target->Originator.

Volume 1 of the CIP specification (3-5.4.1.1) describes the fields of the Network Connection Parameter. It explains the role Redundant Owner field for the Originator->Target direction, but makes no mention of its role for Target->Originator.

Am I right to assume that the Redundant Owner field has no role in the Target->Originator direction, and is ignored?

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I would read it as required to be zero.  (Now in §3-5.5.1.1, in my version of the spec.)

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