IIC Smart Manufacturing Connectivity for Brown-field Sensors
Technology Category
- Functional Applications - Enterprise Resource Planning Systems (ERP)
- Infrastructure as a Service (IaaS)
- Networks & Connectivity - Gateways
Applicable Functions
- Discrete Manufacturing
Use Cases
- Manufacturing System Automation
The Challenge
The discrete manufacturing domain is characterized by a strictly hierarchical structure of the automation systems, commonly referred to as the automation pyramid. Data acquired by a sensor typically flows through an IO-module into a Programmable Logic Controller (PLC) which manages the local real-time control system. As all process data are concentrated in the PLC, re-programming the PLC and thus, implementing interfaces to access these data appear to be the natural choice to transfer them to the IT system. However, for brownfield installations this choice has proven impracticable for the following two reasons:
In brownfield facilities, PLC usually operate within a once-specified environment and are rarely re-programmed. That is why the active staff is often not familiar with the code and lacks of the competence to modify the existing implementation in a reasonable amount of time.
Furthermore, for cost reasons, any PLC was selected to exactly match the requirements of the environment within which it was intended to operate. That is why it cannot be assumed that a PLC will be able to support additional tasks such as communicating data through additional interfaces.
The Solution
*This is an IIC testbed currently in progress.*
LEAD MEMBERS
TE Connectivity, SAP SE
SUPPORTING MEMBERS
ifm, OPC Foundation
MARKET SEGMENT
Discrete manufacturing
This testbed implements an alternative solution by substituting IO-modules that connect the sensors with the real-time automation system by a gateway that extracts the sensor data and transfers them to the IT system through an additional communication channel via OPC UA (IEC 62541). This “Y-Gateway” re-uses existing physical connectivity and supports the easy integration of an IO-Link sensor with the IT by using a common device model based on an open standard (the IO Device Description which is based on ISO 15745-1) and thus enables the remote configuration of the sensor. This common device model is implemented through Manufacturing Data Objects in SAP Manufacturing Integration and Intelligence (SAP MII).
TESTBED INTRODUCTION
This testbed is essentially about implementing a sensor’s virtual representation at platform tier level by
1. A hardware component that establishes a separate OT/IT communication to deliver sensor data to the IT systems and to receive configuration data.
2. The implementation of a common device model based on an open standard that enables the control and manipulation of the physical device from within the IT systems.
This testbed uses open standards for the OT/IT communication, the sensor devices and the common device model:
• IO-Link is standardized as IEC 61131-9:2013 Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI).
• OPC UA is standardized within the IEC 62541 OPC Unified Architecture series.
• The IO Device Description (IODD) is based on ISO 15745-1:2003 Industrial automation systems and integration – Open systems application integration framework – Part 1: Generic reference description
As IO-Link is also based on the IODD, there is a consistent device description from the IT to the sensor level – supported through the semantics-independent data transfer provided by OPC UA – that allows for the easy configuration of a sensor and the interoperability with a large range of devices and analytic services.
LEAD MEMBERS
TE Connectivity, SAP SE
SUPPORTING MEMBERS
ifm, OPC Foundation
MARKET SEGMENT
Discrete manufacturing
This testbed implements an alternative solution by substituting IO-modules that connect the sensors with the real-time automation system by a gateway that extracts the sensor data and transfers them to the IT system through an additional communication channel via OPC UA (IEC 62541). This “Y-Gateway” re-uses existing physical connectivity and supports the easy integration of an IO-Link sensor with the IT by using a common device model based on an open standard (the IO Device Description which is based on ISO 15745-1) and thus enables the remote configuration of the sensor. This common device model is implemented through Manufacturing Data Objects in SAP Manufacturing Integration and Intelligence (SAP MII).
TESTBED INTRODUCTION
This testbed is essentially about implementing a sensor’s virtual representation at platform tier level by
1. A hardware component that establishes a separate OT/IT communication to deliver sensor data to the IT systems and to receive configuration data.
2. The implementation of a common device model based on an open standard that enables the control and manipulation of the physical device from within the IT systems.
This testbed uses open standards for the OT/IT communication, the sensor devices and the common device model:
• IO-Link is standardized as IEC 61131-9:2013 Programmable controllers - Part 9: Single-drop digital communication interface for small sensors and actuators (SDCI).
• OPC UA is standardized within the IEC 62541 OPC Unified Architecture series.
• The IO Device Description (IODD) is based on ISO 15745-1:2003 Industrial automation systems and integration – Open systems application integration framework – Part 1: Generic reference description
As IO-Link is also based on the IODD, there is a consistent device description from the IT to the sensor level – supported through the semantics-independent data transfer provided by OPC UA – that allows for the easy configuration of a sensor and the interoperability with a large range of devices and analytic services.
Operational Impact
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