Rockwell Automation 2711-K9A10_K9C10_T9A10_T9C10 DeviceNet Communications User Guide - Manual (Page 14)

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Publication 2711-6.0.4
Notes on using Explicit Server Messages
• Explicit Server messages have a lower priority than I/O slave
messages.
• Client devices access input/output data from the value attribute
(attribute 3) of the assembly object class (class code 4) using the
specified tag instance number (instance 3-16).
• The PanelView has only one general purpose Explicit message
connection available at a time to an external client device.
Remember this when creating applications that require multiple
Explicit message server connections.
• Data from one client device can overwrite the data sent by
another client.