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case studies
Siemens AG:
Solutions Guide 2011
aSam gDi Standards in
automotive industry enable Plug
and Play like operations
The targets of short commissioning times and the reuse of
test programs were achieved so that we will extend our
ASAM GDI activities.
(Mr. Berthold Mozar Department Manager,
Volkswagen AG in Wolfsburg)
Summary
Challenge: During final assembly, various devices
have to communicate to a diagnostic test
system. Most of these interfaces are proprietary
and depend on the equipment manufacturer
and incur high software development and commissioning
costs.
Solution: A unified interface has to be introduced
which is independent of the equipment
manufacturer. This solution is based on the usage
of the ASAM GDI interface specification.
Key Benefits: The unified interface is applicable
in all plants worldwide. Commissioning becomes
more efficient and implementation risks
are minimized resulting in cost savings for interface
development and deployment.
Situation
Within the final assembly, various equipment
like roller benches or filling stations have to
communicate to a diagnostic test system. Usually
these interfaces are highly dependant on the
equipment supplier resulting regularly in additional
software development and commissioning
costs.
The main areas of interest are Wheel Alignment
and Roller Benches as well as Filling stations. All
manufacturers of these machines and the tester
suppliers have proprietary interfaces which
very often need software adaptations as a consequence,
and increased efforts during commissioning
and test phases. Furthermore, the check
programs have to be adapted to the specific interfaces
and cannot be used across plants.
Challenge
The target is to use a standard interface for the
machines and a unique definition of the test
flow. This would ensure short test phases during
installation and already written test programs
can be used across plants nearly without adaptations.
After the introduction of this interface, commissioning
should be performed plug and play like.
SuCCeSS Strategy
Volkswagen and Siemens decided to use the
ASAM GDI interface to reach this target. As
a common test flow for each machine type, a
companion was defined. The first installations of
ASAM GDI took place in the Volkswagen plant
in Wolfsburg for Filling Stations and a Roller
Bench. Meanwhile Volkswagen and Siemens are
using ASAM GDI for Filling Machines, Wheel
Alignment and Roller Benches in multiple plants
worldwide.
Every device supplier delivers a GDI driver
which is specific for a single device. The test system
is able to communicate via the coordinator
to diverse drivers.
The test programs were created on the central
Siemens SIDIS Pro server in Wolfsburg accord-