Field Bus Network Video Lecture - Embedded Systems (Web) - Computer Science

computer systems used within the
industrial sector are connected by
networks known generally as field bus
field bus systems are a way to connect
computers and instruments to a single
network in a manufacturing plant and
allow for real-time control and
monitoring
fieldbus industrial networks can be
broken down into four levels each with
increasing levels of complexity the most
basic level is the sensor bus networks
sensor bus networks are the least
complex of networks developed for
industrial application in these networks
multiple basic field devices like limit
switches or level optical sensors are
connected to one network cable the
sensor bus network is also capable of
transmitting output signals from the
controller over one cable to indicator
lamps alarms or other actuator devices
the next increasingly complex level of
industrial fieldbus networking is the
device bus network the device bus
network is similar in function to the
sensor bus network but works on a larger
scale connecting many sensors and
actuators together the device bus
network also connects equipment to
variable speed drives and motor control
centers that allow for control of
individual elements in the network
moving up the pyramid the next
increasing complex level of fieldbus
networking is the control bus network
control bus networks are the most
advanced networks used on the factory
floor and data communication happens at
a high level PLC's or programmable logic
controllers are connected to each other
alongside hm eyes or human interface
panels to allow for complete
configuration and control of every
instrument on the network smart
instruments capable of performing
complex operations can also be connected
at this network level for instance there
might be a smart instrument that
measures wear and tear on a valve when
the wear reaches a dangerous level it
will signal the controller that the
valve needs to be replaced
the enterprise or information level
network in a company connects all
computers and departments together it is
the most overarching and complex of all
the various network levels this level of
networking is primarily computer driven
which allows for data collection data
monitoring file transfers and email
exchange on a large scale
the various levels of interconnected
fieldbus networking help to keep
industry functioning smoothly and
successfully