Within CIME environments, one continually comes across a multitude of
different working practices, network devices, information systems and
manufacturing technologies. This heterogeneous environment extends to
individual enterprises and can have profound effects on the efficiency
and effectiveness of an organisation, and often results in symptoms such
as: long product lead times, poor visibility of the product and process
status, high product inventory and work-in- progress, low data
integrity, etc., as well as incurring excessive infrastructure costs.
Having to select an appropriate information system to help achieve the
business objectives of anyone manufacturing enterprise can be an awesome
task. During the 1980s, vendor-independent communications such as MAP
(Manu- facturing Automation Protocol) and CNMA (Communications Network
for Manufacturing Applications) brought standard, open communications to
computer controlled industrial devices, but this alone was not enough to
satisfy the more demanding requirements of creating and maintaining
manufacturing applications. In order to create manufacturing solutions
that effectively utilise Open Systems Interconnection (OSI) it is
necessary to look beyond the standard communications protocols to how
and why applications are developed.