MPN: 6ES7 321-7BH01-0AB0 — industrial control spare part, in stock at TGK Parts.
The SM321 7BH01 packs 32 24 VDC inputs into one S7-300 slot — the high-density DI choice for machine tools and large conveyor controls. With twice the channel count of the 1BH02, it saves rack space but concentrates risk: a single field overvoltage event can take out an entire module of points.
All 32 channels are individually energized and read back on our bench; front-connector contacts are inspected and cleaned.
| MPN | 6ES7 321-7BH01-0AB0 |
|---|---|
| Type | Digital input module |
| Channels | 32 × 24 VDC |
| System | SIMATIC S7-300 |
| Features | Diagnostic / interrupt capable |
| Condition | New / tested used |
| Warranty | 12 months |
Replacement and spare part for industrial automation equipment — production lines, CNC machines, packaging machinery, textile machinery, printing equipment and more.
Yes — S7-300 racks accept any SM321/SM322 mix within the power budget.
All 32 channels are bench-tested before shipping; turnaround is typically within 24 hours.
The 20-pin front connector is ordered separately; we can supply both together.