HMS AnyBus-X AB7607 - Theory of Operation

Module Description 1-2
© 2005 HMS Industrial Networks AB7607 User manual
Theory of Operation
The Anybus-X provides centralized data storage, the “PassageWay
TM
”, for data
that is shared between the DeviceNet and Ethernet networks. Data is placed into
the PassageWay by one network interface, allowing the data to be read through the
other network interface.
The Anybus-X appears as a single device on either network using standard proto-
col mechanisms. No special, or extended, protocol features are required of the
devices on either network to read or write the data flowing through the Passage-
Way; all cross-network activity is transparent to the devices on either network.
Figure 1-1 Anybus-X PassageWay Operation
Ethernet
DeviceNet
PassageWay
Input
Table
Output
Table
Input Data
Output Data
Input Data
Output Data