Hey there! That's a really smart question - you're thinking ahead about how to make your automation investments last. When choosing PLC platforms today to stay compatible with digital twins and edge computing over the next 10 years, here are the key things to consider:

1. Open Standards & Interoperability: Look for platforms that support open communication protocols like OPC UA, MQTT, and REST APIs. These will make it much easier to connect with digital twin systems and edge computing nodes down the road.

2. Edge Computing Capabilities: Choose PLCs that can function as edge controllers or easily integrate with edge computing hardware. Well-designed edge controllers should be highly compatible with existing PLC ecosystems while adding new capabilities.

3. Data Accessibility: Digital twins thrive on real-time data. Make sure your PLC platform can easily expose process data, alarms, and diagnostics in formats that digital twin platforms can consume without complex middleware.

4. Cybersecurity Foundation: As you connect more systems, security becomes critical. Look for platforms with built-in security features, regular updates, and support for modern authentication methods.

5. Scalable Processing Power: Edge computing and digital twins often need more processing power for analytics. Consider platforms that offer scalable CPU options or easy integration with co-processors.

6. Software Flexibility: Platforms that support both traditional IEC 61131-3 programming AND high-level languages (like Python or C++) will be more adaptable to future needs.

7. Cloud Connectivity: While edge computing handles local processing, cloud integration is still important for broader analytics and digital twin synchronization.

8. Vendor Roadmap: Check if the manufacturer has a clear vision for supporting these emerging technologies. Are they investing in digital twin partnerships or edge computing solutions?

The goal is to choose a platform that's not just solving today's problems, but has the architecture and openness to evolve with technology trends. What kind of applications are you working with? That might help narrow down the specific features you need most!