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Navigator 600 Series Analyzers
AW641 and AW642
1 Introduction
Note. This Supplementary User Guide contains information
specific to Profibus DP-enabled Navigator 600 Series
analyzers and must be read in conjunction with the User
Guide relevant to each model.
1.1 Profibus
Profibus is a manufacturer-independent, open fieldbus standard
for a wide range of applications in manufacturing, process and
building automation. Manufacturer independence and openness
are ensured by the international standard EN 50170.
Using
the
Profibus
protocol,
manufacturers
exchange
communications bus without the need for special interface
equipment.
The Profibus family comprises three types of protocol, Profibus
DP, Profibus FMS and Profibus PA, each of which is used for
different tasks. Of these three protocols, the most important for
process automation are Profibus DP and Profibus PA.
Further
information
on
www.profibus.com.
1.1.1 Profibus DP
Profibus DP is designed for high-speed data exchange and is
commonly used by complex or externally-powered devices. The
central controller or 'master' device (e.g. PLC or PC) utilizes
Profibus DP as a fast serial connection with distributed (slave)
field devices such as Profibus-enabled Navigator 600 Series
analyzers.
DP-V0 is the basic stage of the Profibus DP communication
protocol. DP-V0 provides cyclic data exchange between master
and slave devices.
The Navigator 600 Series analyzers also support the DP-V1
extension that enables additional acyclic communication
between master and slave devices.
2
devices
from
different
information
on
the
Profibus
can
be
found
1.1.2 Profibus PA
Profibus PA is designed to accommodate process automation
field devices that require power via the network with the option
to use intrinsic safety for hazardous areas. Typical devices using
this protocol include transmitters and positioners.
A DP/PA coupler or link device is used to connect the Profibus
PA network to the Profibus DP network.
1.2 Profibus and ABB Products
Navigator 600 Series analyzers utilize Profibus DP as this is the
protocol optimized for high speed and low connection costs
(see
www.abb.com/fieldbus
same
1.3 Profibus DP Transmission Technology
The transfer method of Profibus DP is RS485 – a proven
technology. A twisted, shielded, two-wire copper cable is used
as the transfer medium.
The bus structure enables addition and removal of stations or
step-by-step commissioning of the system without affecting
other stations. Later expansion has no influence on stations
already in operation.
at
Transmission speeds of between 9.6 kbit/sec and 12 Mbit/sec
are available. One uniform transmission speed is selected for all
devices on the bus when the system is commissioned.
1 Introduction
and follow the
Profibus
link).
IM/NAV6PBS Issue 1
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