Attention

IronPLC implements many parts of the IEC 61131-3 standard and is working toward full Structured Text support. Key features still missing include ranges, enum and I/O mapping.

V6003

Code

V6003

Message

Failed to install signal handler

The VM could not install a signal handler for clean shutdown (Ctrl+C). This is typically an operating system or platform limitation.

Solutions

1. Check that your operating system supports signal handling

2. Verify that another process or library has not already claimed the signal handler

3. Try running the VM with elevated privileges if permitted by your environment

4. If running inside a container or sandbox, check that signal delivery is allowed