https://sudonull.com/apcs-emulation-modbus-rtu-controllers
Learn how to create a software emulator for testing APCS on Delphi. Emulation of Modbus, MDVV, command queues. Speed up debugging without hardware. For middle/senior dev.
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https://sudonull.com/wincc-redundancy-in-workgroup-dcom-setup
Step-by-Step Implementation of Hot Standby WinCC 7.5 on Windows Server 2012R2 without Domain. DCOM, SIMATIC Shell, Pitfalls and Solutions for APCS Specialists. Production Case.
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