CIP Read Data Service (programmation)

lije

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Join Date
Oct 2007
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hi,
I'm trying to develop my own application to communicate with Contrologix via Ethernet/IP.

For this, i used the CIP Read Data Service (#4C) to commnunicate with an ethIP product, but i can't figure how to use this service with unconnected messaging (when i send a msg, and scan it with wireshark, the message request service in the CIP part is shown as "Open Connection") . i used the docs from AB (Logix 5000 Data Acces), but it seems that this service can be used only with connected messaging ...
I can't find an EthIP packet example using this service neither :angr:

Can anyone help me please ?

Thanks !
 

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