Product information
Overview
Key Features
- Digital input capacity: 16 digital inputs with an input characteristic curve in accordance with IEC 61131, type 2.
- Input voltage: Input voltage is DC with a rated value of 24 V; signal "0" is -30 to +5 V and signal "1" is 13 to 30V.
- Diagnostics and interrupts: Parameterizable diagnostics, diagnostic alarms and hardware interrupts are supported; wire-break diagnosis is available to I< 1 mA.
- Isochronous operation: Isochronous mode: Yes.
- Electrical isolation: Digital inputs are electrically isolated from the backplane bus by optocoupler and tested with 500 V DC; channels are not isolated from each other.
- Connection and dimensions: A 20-pin front connector is required. Dimensions are 40 mm wide, 125 mm high and 120 mm deep.
Technical Summary
| Product type | SIMATIC S7-300 SM 321 digital input module |
|---|---|
| Digital inputs | 16 |
| Input voltage | 24 V DC rated; signal "0": -30 to +5 V; signal "1": 13 to 30V |
| Input delay | Parameterizable: 0.1 / 0.5 / 3 / 15 / 20 ms |
| Isochronous mode | Yes |
| Interrupts and diagnostics | Parameterizable diagnostic alarms, hardware interrupts and diagnostics |
| Front connector | 20-pin required |
| Product lifecycle | Product cancellation |
Frequently Asked Questions
Is 6ES7321-7BH01-0AB0 a SIMATIC S7-300 digital input module?
Yes. It is a SIMATIC S7-300 SM 321 digital input module with 16 isolated digital inputs.
What input voltage does this module use?
The input voltage is DC with a rated value of 24 V. Signal "0" is -30 to +5 V, and signal "1" is 13 to 30V.
What connector is required?
A 20-pin front connector is required.
Does it support diagnostics and hardware interrupts?
Yes. Diagnostics, diagnostic alarms and hardware interrupts are parameterizable.
Can I request a quotation for a project quantity and destination?
Yes. Send the required quantity, destination and project-list context for a model-specific quotation.
