Multi-COM Legacy Automation: RS232/RS485 Bus Diagnostics in 6-COM Fanless Windows 11 HMIs
Despite the rapid expansion of Industrial Ethernet, EtherCAT, and wireless MQTT gateways across modern smart factories, serial communication (RS-232, RS-422, and RS-485) remains the workhorse of industrial control systems. Legacy CNC machining centers, precision weight scales, optical barcode scanners, variable frequency drives (VFDs), and programmable logic controllers (PLCs) rely heavily on serial fieldbuses for their

