The Network Master acquires data from
the valve actuators by polling or scanning each device in a sequence of slave address from
a table called a scan list. Polling is a process of the Network Master sending to each slave
address, a command to return its status information, including alarms, discrete and analog
inputs and outputs. When control commands (valve open, stop, close, position set point, etc.)
are generated by a host system up-line of the Network Master, it then sends the appropriate
commands over the network to the addressed slave device. A more detailed functional
description of operation is provided in the Theory of Operation section of this manual.

The AMS Wireless Vibration Monitor delivers full vibration data over a self-organizing
wireless mesh network. It provides rich information about machinery health for
both operations and maintenance personnel. Overall vibration, PeakVue measurements
and temperature readings can be easily integrated into any control system or plant historian,
while diagnostic data can be displayed by AMS Device Manager and AMS Machine
Works software with alert broadcast via the AMS Optics asset performance platform.
Emerson offers Ovation Simulation solutions using virtual technology that faithfully replicates the
Ovation DCS within a simulator configuration by using a few desktop workstations.
This approach reduces hardware costs and footprint, allows easy portability for use throughout the facility,
and greatly simplifies ongoing simulator maintenance and upgrades to track ongoing control system modifications.
Ovation simulation is a valuable and flexible tool to improve plant operations.
Typical applications include DCS validation prior to its installation, operator training programs,
engineering upgrades,and control changes to improve plant performance.
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