Siemens 6ES7321-1BH10-0AA0
MPN6ES7321-1BH10-0AA0
End of Life
SIMATIC S7-300, Digital input SM 321, isolated, 16 DI, 24 V DC, 1x 20-pole, 0.05 ms input delay
$77.77 – $226.00Ref. price · indicative, final on quote
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MOQ1 pcs
Sourced new & surplus through independent channelsListing updated Jun 2026
Specifications
Inputs
| Parameter | Value |
|---|---|
| Number of digital inputs | 16 |
| Max. inputs, up to 40 °C | 16 |
| Max. inputs, up to 60 °C | 16 |
| 2-wire sensor support | Yes |
Electrical
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Input voltage at signal "1" | 13 to 30V |
| Input voltage type (AC/DC) | DC |
| Input voltage at signal "0" | -30 to +5 V |
| Permissible range, lower limit (DC) | 20.4 V |
| Permissible range, upper limit (DC) | 28.8 V |
| Input current at signal "1" (typ.) | 7 mA |
| Power loss (typ.) | 3.8 W |
| Current consumption from backplane bus (5 V DC), max. | 110 mA |
| Permissible quiescent current, 2-wire sensor, max. | 1.5 mA |
| Cable length, unshielded, max. | 600 m |
| Cable length, shielded, max. | 1 000 m |
Timing
| Parameter | Value |
|---|---|
| Input delay 0 to 1, min. | 25 µs |
| Input delay 1 to 0, min. | 25 µs |
| Input delay 0 to 1, max. | 75 µs |
| Input delay 1 to 0, max. | 75 µs |
| Input delay, parameterizable values | No |
Diagnostics & Isolation
| Parameter | Value |
|---|---|
| Diagnostics function | No |
| Diagnostic alarm | No |
| Hardware interrupt support | No |
| Isolation between channels | No |
| Isolation between channels and backplane bus | Yes; Optocoupler |
| Isolation test voltage | 500 V DC |
| Channels per isolated group | 16 |
| Status indicator per channel (green) | Yes |
Mechanical
| Parameter | Value |
|---|---|
| Depth | 120 mm |
| Height | 125 mm |
| Width | 40 mm |
MPN
6ES7321-1BH10-0AA0