Siemens FIDAMAT 6 Operating Instructions Manual page 26

Technical description
The gas analyzers can be operated from a
control system or a separate PC using the
SIMATIC PDM (Process Device Manager)
operator control utility, a program which runs
under Windows XP or Windows 2000 and which
can also be incorporated into the SIMATIC PCS
7 process control system. This means that is
possible to represent in a clear and logical
manner not only the incorporation of the devices
in the system but also the complex parametrical
structure of the analyzers and operating the units
becomes simply a matter of clicking.
The PROFIBUS users organization (PNO) is an
independent international body representing the
interests of a large number of manufacturers and
users. Alongside services such as giving advice,
training and the certification of devices, its
primary duty is the further development,
standardization and promotion of PROFIBUS
technology. Definition of a mandatory
functionality for a class of devices in a profile is a
necessary condition for devices from different
manufactures behaving in a uniform manner –
what is known as "interoperability". At the end of
1999 a mandatory profile for analysis devices
was established down thereby ensuring that all
devices in a system with PROFIBUS capability
will work together.
Fig. 2-5: Typical layout of a PROFIBUS system
2-12
This profile defines the functionalities of the analysis
devices in a block model. For example, the device
block (physical block) describes the measurement
procedure, the analyzer and manufacturer names,
serial number and operational state (in operation,
under maintenance). Different functional blocks
contain the execution of specific functions such as
measured-value processing and alarm response. The
transducer blocks describe the functionality of the
measurement procedure itself as well as control of
the procedure – for example, preprocessing of a
measured value, cross-corrections, curves,
measuring ranges and also switching and control
operations. Data transmission between bus users is
defined in protocols.
Here a distinction is drawn between cyclic and
acyclic services. Time-critical data, such as
measured values and states, are transmitted
using cyclic services. Acyclic services, on the
other hand, permit device parameters to be
interrogated or modified during operation.
All of the gas analyzers in Series 6 (ULTRAMAT
6, OXYMAT 6/ 61, CALOMAT 6, ULTRAMAT 6
and FIDAMAT 6 and also ULTRAMAT 23) have
PROFIBUS capability once fitted with an optional
plug-in board (which can also be retrofitted) (see
also the electronics spare parts from page 7-3
onward of the spare parts list).
Operating manual – A5E00222135-01
FIDAMAT 6 gas analyzer