With OPC UA or MQTT communication on the factory floor, it is possible to use a computer, server or edge gateway to relay information to IT systems and clouds.
What you can do
The Anybus CompactCom implements an OPC UA server which models the Anybus CompactCom as a device in its address space, using the OPC UA Device Integration (DI) model. The application will enable the OPC UA functionality where the ADIs (application parameters) are readable as variable nodes through OPC UA. The modelled device is of type CompactCom40DeviceType which is a subtype of the OPC UA DeviceType.
The Anybus CompactCom acts as a publisher on the network using data from the host application. The data will be encoded using an encoding technology chosen by the host application before published, JSON or transparent encoding is supported. Data is tagged with a topic string that is used by the clients that would like to receive the data published by a device when subscribing for the data from the broker.
Schematic illustration of the data flow of data through the Anybus CompactCom with OPC UA and MQTT functionality.
OPC Unified Architecture (UA) is a service-oriented industrial communication standard for secure and reliable data exchange.
OPC UA is platform-independent and ensures a seamless flow of information among devices from multiple vendors. It defines services for data exchange between clients and servers including access to real-time data, monitoring of alarms and events, access to historical data and other applications.
The standard is managed by the OPC Foundation.
MQTT (Message Queue Telemetry Transport) is a publish/subscribe messaging protocol ideal for IT/OT bridging and IIoT solutions. Based on its light-weight and straight forward approach, it has become one of the most popular protocols enabling industrial data and information exchange. MQTT is based around a message broker (server) to which industrial devices (clients) connect. The clients exchange information via the broker based on topics with a flexible syntax. The broker uses the topics to decide which clients to receive a message. Compared to OPC UA, MQTT is more flexible and easier to implement. On the other hand, it lacks the data, service models and security schemes provided by OPC UA.
The Anybus CompactCom 40 series products supporting MQTT is under development (se info on left). More information will be available soon.
VERSIONS MQTT DISPONIBLES AU 3EME TRIMESTRE 2018
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