Intellis™ is a family
of industrial control field Network Monitors which use embedded control
systems to automate valves and link field I/O to the host PLC or DCS.
Network Monitors are standard Westlock Control Monitors with the addition
of a network I/O module. Each Network Monitor houses two discrete Hall
Effect sensors for valve position monitoring, a low power solenoid valve
for actuation control, and a network interface module for communication
via the AS-interface® 2.0/2.1, DeviceNet®, Foundation Fieldbus®,
ModBus® or Profibus protocol. Monitors are available for Linear,
Rotary and Sanitary Diaphragm applications in all area classifications.
The acceptability of standard network protocols such as ModBus, DeviceNet
and AS-interface has made it possible to effectively integrate process
control components into a network. ModBus, DeviceNet, AS-interface, Profibus
and Foundation Fieldbus have emerged as de facto standards for interfacing
discrete devices. They have proven themselves to be extremely reliable,
simple to understand and consistently cost effective. The integration
of these five major network standards with various manufacturers of PLC’s
and DCS systems is readily accomplished through the implementation of
off-the shelf gateway interfaces.
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