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Ensure no other software (like a serial terminal or older PLC software) is actively using the selected COM port.

It is highly recommended to download software directly from the official Delta Download Center to ensure you are getting legitimate, malware-free files. The old v1.12 software is known to have significant security vulnerabilities, which are detailed in the next section.

The update uses SHA-1, which Windows 11 blocks by default. Solution: Run reg add "HKLM\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL" /v EnableInsecureTLS /t REG_DWORD /d 1 /f (temporarily) – then revert after update. commgr 112 download upd link

Set up a to test your code without hardware

: Allows users to create and configure various communication drivers, such as RS-232, RS-485, Ethernet, and USB. Ensure no other software (like a serial terminal

Software updates are crucial for several reasons:

Scenario A: Configuring a Hardware Serial Interconnect (RS-232 / RS-485) Launch the utility from the system tray and select . Name the driver profile explicitly (e.g., PLC_Serial_COM3 ). Set the Connection Type dropdown option to RS232/485/USB . The update uses SHA-1, which Windows 11 blocks by default

The following table summarizes the key known vulnerabilities.

Once installed, here is a typical workflow for creating a connection driver:

If downloading the file does not immediately resolve the application crash, try these complementary Windows system fixes: Method 1: Run the Deployment Image & System File Checker

Set the to PLC - Programmable Logic Controllers .