ISO 18435 integrates information
Emerging standards for the integration of production, diagnostics, and maintenance information will enable opportunities for improved supply chain collaboration and interoperability of diagnostics, control, and maintenance applications to support dynamic production requirements.
Effective managing of changing production requirements and disruptions encountered in the manufacturing process is possible by using applications that are interoperable.
ISO 18435 facilitates interoperability by defining a set of integration models and interfaces based on the enterprise-control system integration approach of ISO/IEC 62264 (ISA-95) and emerging standards for condition-based monitoring (ISO 13374).
The publication of ISO 15745, Application Integration Framework standard, provides the basic integration framework for the interoperability of applications.
There are now a number of integration models and interfaces defined in ISO 18435 that can utilize these interfaces to improve interoperability.
Benefits of using these models and schemas are improved visibility to manufacturing management not only of the current state of the manufacturing assets, but also information about the capability of those assets to meet future manufacturing requirements.
In addition, the use of common descriptions for asset types, locations, status, and capabilities will enable the use of standardized services to locate, assess, and repair manufacturing disruptions.
These models will present different user views for the manufacturing life cycle, as well as different use cases and interaction scenarios depending upon the role of the user (management, operator, maintenance personnel) involved in the system in order to improve the system-reconfiguration management process.
As manufacturers face more competitive demands on their enterprises, production efficiency improvements demand more visibility into and better management of manufacturing assets.
Improved awareness about the capability of those assets to meet changing manufacturing requirements is equally important.
These changing requirements can be the result of new customer demands, process upsets, or changes in equipment or process capability.
In response to these changing requirements, a manufacturing system can be responsive, and we can dynamically reconfigure it if we have current information about the status and capability of the deployed resources.
The information can be available if the deployed resources provide the required interfaces.
Different operational and maintenance strategies ensure the resources deployed are available when needed. In the past, preventive or reactive maintenance strategies ensured the manufacturing assets were available when needed.
More recently, the Condition Based Maintenance (CBM) approach introduced the ability to diagnose and perform maintenance based upon actual asset conditions and has enabled more responsive maintenance strategies.
A goal of the emerging ISO 18435 standards activity is integrating CBM related information, along with other operating environment information, to optimize operating decisions for effective and efficient manufacturing.
ISO 18435 describes an integration model to identify the interfaces needed to improve and facilitate the interoperability of diagnostics, control, and maintenance applications.
This ISO working group is collaborating with the related efforts of MIMOSA (Machinery Information Management Open System Alliance), ISA-SP95, and OPC.
While a typical asset management system can provide the current status of manufacturing assets to support a reactive maintenance strategy, better asset utilization is possible by integrating information about current capability of these assets and their performance during production.
Ideally, the effective and timely maintenance of these assets will enable these to provide the services required by the manufacturing production system. Diagnostics and maintenance applications can use the information about the process, equipment, operator, and materials that many devices already provide as part of their roles in production automation and control.
With the increasing use of digital signal processing in these devices, the analysis and processing of information can happen closer to the manufacturing process.
Information content originally considered as "noise" in the manufacturing process can now benefit from better analysis.
Other benefits using the ISO 18435 framework include:
• Facilitate procurement of open, integrated systems by referencing pre-defined diagnostics and maintenance application interoperability profiles
• Reduce time to assess the suitability of components to develop diagnostics and maintenance solutions using the framework
• Provide and develop new diagnostics and maintenance products and services using the framework
Read more about the approach, purpose, and scope of the ISO 18435 project by reading the complete text of this ISA EXPO technical paper put together by The Advanced Technology Group at http://www.isa.org/intech/jan07/integration.