Latest communication verification

This page keeps the current public summary only. Older detailed notes are not kept in the public documentation set.

Current Retained Summary

• fully verified families across the current retained compatibility summary: iQ-R and iQ-L
• mixed or profile-limited families in the retained summary: MELSEC-Q, MELSEC-L, iQ-F, and third-party MC-compatible endpoints
• recommended first public test: D100, D200:F, and D50.3

Practical Public Conclusions

• iQ-R and iQ-L are the cleanest first-run paths for the current public helper surface
• for MELSEC-Q, MELSEC-L, iQ-F, and third-party MC-compatible endpoints, prefer the profile combinations documented in the retained compatibility summary
• D, M, X, Y, R, and ZR remain the core public families for beginner use

Current Cautions

• keep frame type and compatibility mode explicit for every connection
• keep module-buffer families such as G and HG out of the first smoke test
• public docs keep only the current recommendation-level summary, not the historical probe archive

Where Older Evidence Went

This public page keeps only the current summary. Detailed historical evidence is retained as maintainer notes.