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The OPC Server for W&T Network Devices, developed by Wiesemann & Theis GmbH, is a connectivity utility that exposes Web-Thermometers, Web-IOs and Com-Servers to any OPC-compliant SCADA, HMI or building-automation visualization system. By implementing both OPC Data Access (DA) and OPC Alarms & Events (A&E) interfaces, the server translates the proprietary protocols of W&T network devices into the standardized OPC calls expected by Wonderware, WinCC, FactoryTalk, Zenon and similar packages, eliminating the need for custom drivers or protocol converters. Typical deployments include reading temperature streams from distributed Web-Thermometers for climate supervision, mapping digital and analog I/O lines of Web-IO modules to control tags, or routing serial data from Com-Servers to higher-level MES layers. The lightweight service runs on any Windows PC that can reach the devices via TCP/IP and auto-detects units on the local subnet; tags are automatically generated with scaling, units and alarm limits taken from the device configuration, so integrators can start trending and alarming within minutes. Version 4.90, the fifth public release, adds support for the latest Web-IO 4.0 firmware, improves reconnection resilience after network outages and reduces polling latency for high-speed I/O applications. Because the server is certified for OPC DA 2.05 and OPC A&E 1.10, it can be used in both new 64-bit environments and legacy 32-bit visualization projects without compatibility issues. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.
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