Before diving into the portable version, let’s define the software. (often referred to as SinuCom A or SinuCom IS) is a PC-based service tool designed for commissioning, servicing, and diagnostics of Siemens analog and DC drives.
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| Problem | Likely Cause | Portable-Specific Fix | | :--- | :--- | :--- | | | The USB-to-serial adapter changed COM numbers. | Close SinuCom. Check Windows Device Manager for the active COM port. Edit PCIN.INI manually or reconfigure in the app. | | No data transfer; CNC stays "Waiting" | Wrong cable (straight vs. null-modem) or handshake mismatch. | Use a null-modem cable. In SinuCom, try switching handshake from RTS/CTS to XON/XOFF (software handshake). | | Garbage characters on CNC | Bad parity or baud rate mismatch. | Double-check: 7E1 (7 data, Even parity, 1 stop) is the classic. SinuCom portable retains settings in the .INI file on the USB – delete PCIN.INI to reset defaults. | | Portable version crashes on Windows 10/11 | Missing legacy MSCOMCTL.OCX or COMDLG32.OCX . | You need to register these old OCX files. Run as Administrator: regsvr32 mscomctl.ocx . (These files are on your USB if you copied from an old Windows XP machine). | | SinuCom starts but buttons don't work | Modern DPI scaling (4K monitors). | Right-click PCIN.exe > Properties > Compatibility > "Change high DPI settings" > Override high DPI scaling (Application). | Before diving into the portable version, let’s define
