Key Features
- 16 digital inputs: Digital inputs: 16.
- 24 V DC input voltage: Input voltage: DC 24 V.
- Isolated input section: Isolation tested with 500 V DC.
- Hardware interrupt and diagnostics: Hardware interrupt: Yes; Parameterizable. Diagnostics function: Yes; Parameterizable.
- 20-pole front connector: Required front connector: 20-pin.
- Suitable for isochronous mode: Isochronous mode: Yes.
Applications
- 24 V DC digital signal acquisition: Input module for reading 24 V DC digital signals.
- Isochronous mode input handling: Digital input use in isochronous mode.
- Diagnostics and hardware interrupt input processing: Input handling with diagnostics and hardware interrupt functions.
Technical Summary
| Product type | SIMATIC S7-300, digital input SM 321 |
|---|---|
| Spare part | ***spare part*** |
| Digital inputs | 16 |
| Input voltage | DC 24 V |
| Input signal 0 | -30 to +5 V |
| Input signal 1 | 13 to 30V |
| Input delay, standard inputs | 0.1 / 0.5 / 3 / 15 / 20 ms |
| Potential separation | between the channels and backplane bus; Yes; Optocoupler |
| Isolation tested with | 500 V DC |
| Required front connector | 20-pin |
Frequently Asked Questions
What is Siemens 6ES7321-7BH01-0AB0?
A SIMATIC S7-300 digital input SM 321 module with 16 DI.
How many digital inputs does 6ES7321-7BH01-0AB0 provide?
It provides 16 digital inputs.
What input voltage does this module use?
The input voltage is DC 24 V.
Does 6ES7321-7BH01-0AB0 support diagnostics and hardware interrupt?
Yes. Diagnostics function and hardware interrupt are both available and parameterizable.
What front connector is required for this module?
A 20-pin front connector is required.
