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Issue In OPC-UA polling, the client actively requests data from the server at regular intervals. This actually will increase server load. The server must respond to each polling request, which can become a performance concern if there are numerous clients or high-frequency polling. Data updates may not be immediate, as they depend on the polling interval. Resolution This article here will describe the method of using subscription instead of the polling method. In the polling method, the OPC-UA client periodically sends requests to the OPC-UA server to fetch the data values. While in the subscription method, the OPC-UA client establishes a long-lasting subscription with the OPC-UA server. The client does not need to send periodic requests; it simply waits for the server to push the data updates. This method is event-driven, as the client receives data only when there are actual changes in the values. It reduces network traffic and processing overhead since data is only transmitted when necessary. To use M580 OPC-UA client programming by subscription method, the attached document following here describes the steps to connect, create subscriptions and to add monitored items to the subscription. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

Issue One of the biggest challenges in the industrial automation and control field is how to get machines to talk to each other. Exchanging data from machine to machine, or a machine to PC, machine integration between vendors of different types can be complex, laborious, and difficult, requiring expensive engineers and incurring significant expense. When you integrate systems of multiple vendors to provide total solutions to your customers, you want to use standardized, reliable, secure, scalable and platform independent technology. Resolution This is where we can leverage the OPC UA (Open Platform Communications Unified Architecture) to solve these strategic issues faced by most manufacturers. It is a standardized protocol that allows for seamless and secure communication between different systems and devices, regardless of the vendor or platform. The document here describes one of the methods of exchanging data between different machines. By implementing OPC UA client function blocks in a controller, the controller can directly access data from any other OPC UA servers. As an example, a demo architecture is shown: A virtual machine or PC is used here as the OPC-UA server and the Modicon M580 ePAC as the OPC UA client, should be on the same network and should have the correct network settings configured. The virtual machine's network adapter should be set to bridged mode, and the virtual machine PC's firewall settings should allow communication with the M580 CPU (Firmware ≥ 4.10). See attached document on how to implement the Modicon M580 OPC-UA Client Read/Write function blocks. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

Objective The objective of this article is to guide us through data acquisition with EMSE over OPC UA. And we shall be going for full blown OPC UA security (the need for user authentication, Certificates and X.509 Token usage) so that we can experience what is involved to get it running. We shall be touching heavily on EcoStruxture OPC UA Expert as well because the simulation project will be running behind that, in a PLC Simulator. Snapshots Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

Issue Integration of OPC UA Server in rack with Ecostruxure Process Expert Resolution This document will guide you in the integration of the OPC UA Server Module in Rack BMENUA0100 with Ecostruxure Process Expert for AVEVA System Platform. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

How to Enable Native Citect Scada OPC DA Server on EcoStruxure Process Expert? In EcoStruxure Process Expert 2019 (former HDCS) and previous versions the communication between the supervision participant Citect Scada and Modicon PAC controllers are handle by OFS – OPC Factory Server. The OFS is an OPC DA Server which is installed in the same server as the EPE operation server(s). Whenever a third-party software needs to collect data from EPE it can be done by connecting to OFS Server in either primary or standby operation server. This solution using OFS Server as an unique OPC DA Server to interface with other system works fine but some customers standard or customers best practice doesn’t allow other systems to collect data direct from the controllers. These customers prefer third-party software collecting data from the supervision servers. Another motivating force to have an OPC DA server enabled on supervision participant is that some projects could have calculate variables on supervision which does not exist on control project...

Issue The aim of this article is to provide a step-by-step guide to configure EcoStruxure Data Expert – Performance in order to establish MQTT communication with Node-RED. Resolution Please see the attachment for further information. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

All control projects require some level of time synchronization. The time synchronization serves a fundamental role in any network, but it's too often added as an afterthought. However, it can mean the difference between correctly troubleshooting in minutes and returning the production to the desired level or having no idea about what caused production lost. The Network Time Protocol is a client-server protocol and has been widely adopted in all kind of Industries since 1985. It is a low-cost solution that can be easily applied for all EcoStruxure Process Expert architectures.

Issue If you ever tried to link EcoStruxure Plant Data Expert: Essential Nodes directly to EcoStruxure Augmented Operator Advisor Nodes, you will find that EcoStruxure Augmented Operator Advisor Nodes do not accept the CMS payload which EcoStruxure Plant Data Expert: Essential Nodes produce. Resolution This is an article to teach us how we can use EcoStruxure Plant Data Expert: Essential Nodes with EcoStruxure Augmented Operator Advisor Nodes with the introduction of Change Node within our Flow. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

Issue Schneider Electric provides M580 ePAC and Ethernet modules. Several architectures are already documented. However, the need of customer sometimes is different and requires a specific architecture. In this case, we will have a look on remarks and questions regarding topology and modules characteristics with a special focus to avoid broadcast storms. Resolution From extraction of the EcoStruxure Control Expert Help and “M580 Ethernet Remote IO / Distributed IO Principles and Technologies” document, this article reminds the basic rules of the Ethernet ports of modules and Ethernet cables to connect or not, to avoid broadcast storm. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

Background Growing in popularity now is the trend to propagate data into the Cloud. AVEVA Insight Online is one of the featured Applications which we can easily propagate data to and have them displayed as smart data to be viewed anywhere. When using AVEVA Insight Online as it is, without any added configurations, we usually have our contents displayed in its simplest form as below. Objective When this knowledge is applied, not only are we able to get the Units of Measurements to show (on the Analog Tags), but we are able to also get Digital Tags to show a descriptive state instead of just ON and OFF. Disclaimer The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.

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