Modular Device Functionality
Modular devices consist of a backplane with a certain number of slots. The first slot is occupied by the “coupler” which contains the Anybus CompactCom module. All other slots may be empty or occupied by modules.
When mapping ADIs to process data the application shall map the process data of each module in slot order.
A list of modules in a Modular Device is available to the EtherNet/IP network master by a request to the CIP Identity object.
See also ...
“Modular Device Object (ECh)” (see Anybus CompactCom 40 Software Design Guide)
Identity Object (01h) (CIP object)