Free IO list checker

By Saad, practising automation engineer · Updated 2026-09-25

Upload a vendor XLSX, XLS, or CSV. See whether SchematicForge can read the tag column, count loops and signals, and flag issues — no account. The same file carries into signup if you generate drawings.

1. Drop the spreadsheet (up to 20 MB).
2. Review loop count, signal count, detected columns, and issues.
3. Create a free account only when you want the register and drawings.

Need a clean file first? Use the free IO list template or the prepare an IO list guide. Range columns: range low / range high. Tag census: instrument index template.