Siemens SIMATIC HMI x77 series (OP73/OP77A/OP77B/TP177A/TP177B/OP177B/TP177micro)
Siemens SIMATIC HMI x77 series (OP73/OP77A/OP77B/TP177A/TP177B/OP177B/TP177micro) status: Discontinued. Manufacturer support/spares until 2026. The recommended replacement is Comfort Panels (KTP400 Comfort, TP700 Comfort).
Lifecycle status: Discontinued
- Manufacturer support / spares until
- 2026
- Recommended replacement
- Comfort Panels (KTP400 Comfort, TP700 Comfort)
Migration notes
Official note 109486162 (updated 07/15/2026) shows the last remaining variants reach final P.M410/P.M490 effective October 1, 2026 — Siemens' stated spare-parts window for classic panels runs 'from around 2008 to 2026', so 2026 is the hard end.
Official sources
Lifecycle data compiled from the manufacturer's own notices linked above. AllPartsIn is an independent reseller, not affiliated with or endorsed by the manufacturer.
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