Manufacturer DiscontinuedLimited Stock
Siemens
Siemens 6ES7 321-1BH02-0AA0 SIMATIC S7-300 SM 321 Digital Input 16ch
MPN: 6ES7 321-1BH02-0AA0
$180-280
Limited StockSIMATIC S7-300 SM 321 digital input module. 16 channels at 24VDC. Configurable input delay (1.2-4.8ms). Isolated inputs per group. Front connector with screw terminals. Discontinued product, critical spare part for S7-300 systems.
| Inputs | 16 @ 24VDC |
|---|---|
| Input Delay | 1.2-4.8ms |
| Isolation | Yes (groups of 8) |
| Width | 40mm |
Available Option Codes / Variants
- 6ES7 321-1BH02-0AA0 — SM 321 Digital Input 16x24V DC
The codes above are the same base model in different configurations. Tell us the exact code you need and we will confirm availability.
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- Industrial automation systems