Programming Via The Opc Ua Interface - Siemens SIMATIC RF185C Operating Instructions Manual

Programming via the OPC UA interface

This section is intended only for OPC UA users.
OPC UA is a standardized communications protocol. It allows data exchange between all
types of industrial devices that support OPC UA and that are integrated in the same network.
In this context, devices that provide or publish data, information and command calls are
known as OPC UA servers. Devices that use this data, information and these command calls
are known as OPC UA clients.
Knowledge of fundamental OPC mechanisms as well as programming know-how are
essential in order to understand the following section and to implement your own OPC UA
client to use with the RF18xC communications module. The OPC UA standard specifications
will help you here.
The standard "OPC Unified Architecture for AutoID Companion Specification" was defined
by the organizations "AIM Germany" and "OPC Foundation". This describes the connection
of identification devices via OPC UA. The identification devices can be subdivided as follows:
● Text recognition devices (OCR)
● Optical readers (e.g. barcode)
● RFID readers
● Devices for localization (RTLS).
Figure 9-1
You will find more information on OPC UA on the pages of the "OPC Foundation
(https://opcfoundation.org/)". The "OPC Unified Architecture for AutoID Companion
Specification" can be obtained via the "AIM Germany (www.aim-d.de)".
All SIMATIC RF18xC communications modules have implemented OPC UA servers with the
range of functions for RFID devices defined by "OPC Unified Architecture for AutoID"
SIMATIC RF185C, RF186C, RF188C
Operating Instructions, 10/2018, C79000-G8976-C512-01
Ident devices in an OPC UA network
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