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Abstract:
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In the two last decades, the manufacturing producers have faced essential
productivity challenges. Product life cycles must be shortened, production lines
must be optimized in term of stock levels and must be able to envolve quickly at a
low cost to respond to market demand. This has an immediate impact on the
design of process control architectures and consequently, on industrial networks.
The Manufacturing Automation Protocol (MAP) architecture is a partial response to
these needs and Manufacturing Message Specification (MMS) is, in term of
functionality, the main originality in MAP application protocol.
The Manufacturing Message Specification (MMS) is the main application
protocol of the MAP communication standard architecture. MMS covers the most
important functions needed in manufacturing applications. It was initially designed
to rely on an ISO protocol stack, but the OSI layering allows to consider MMS by
itself, independently of its standard profile. As Internet protocols are wide spread
standards, trying to implement MMS over the TCP/IP stack is a practical and
important issue. MMS is designed to support the interactions between
heterogeneous industrial devices. It allows the standard definition of abstract virtual
devices in term of data and services. Remote calls to a device service are
performed through an encoding/transfer/decoding scheme that uses a unified
transfer syntax. From a practical point of view, this leads to an open architecture,
independent of the implementation of services in devices. From a more
methodological point of view, MMS is a first step to the object oriented design of
control process systems.
In this project, I developed an original approach that tries to use the best
features of the JAVA environment and the functional advantages of MMS standard.
This solution uses the efficient JNI (Java Native Interface) Technology to perform
MMS client-server interactions between a Java code and the MMS functions in
C/C++ code. |
