Product Overview
Technical Summary
| Parameter | Value |
|---|---|
| Module type | SIMATIC S7-300 SM 321 digital input module |
| Digital inputs | 64 |
| Rated input voltage | 24 V DC |
| Signal 0 input voltage | -30 to +5 V |
| Signal 1 input voltage | 13 to 30V |
| Signal 1 input current, typ. | 4.2 mA |
| Standard input rated timing | 4.2 ms |
| Input timing at 0 to 1 and 1 to 0 | 1.2 ms min. to 4.8 ms max. |
| Input isolation | From backplane bus; optocoupler |
| Channel grouping | 16 |
| Required front connector | Cable 6ES7392-4Bxx0-0AA0 or terminal blocks 6ES7392-1xN00-0AA0 |
Applications
- Digital signal acquisition: Acquires digital signals through 64 24 V DC inputs.
Key Features
- Digital input channels: 64 digital inputs with an IEC 61131 type 1 input characteristic.
- Input voltage: 24 V DC rated input voltage; signal 0: -30 to +5 V and signal 1: 13 to 30V.
- Input timing: Standard input rated timing: 4.2 ms; at 0 to 1 and 1 to 0, 1.2 ms min. to 4.8 ms max.
- Isolation: Digital inputs are isolated from the backplane bus by an optocoupler. Channels are not isolated from one another and are grouped in groups of 16.
- Connection: A required front connector is not included: cable 6ES7392-4Bxx0-0AA0 or terminal blocks 6ES7392-1xN00-0AA0.
- Diagnostics and dimensions: Digital input status indicator: green LED. Diagnostic functions, diagnostic alarms, hardware interrupts, wire-break detection, and group error SF indication are not available. Dimensions: 40 mm × 125 mm × 112 mm; weight, approx. 230 g.
Frequently Asked Questions
1. How many digital inputs does 6ES7321-1BP00-0AA0 have?
It has 64 digital inputs.
2. What input voltage does this module use?
The rated input voltage is 24 V DC. Signal 0 is -30 to +5 V, and signal 1 is 13 to 30V.
3. Are the digital inputs isolated?
The digital inputs are isolated from the backplane bus by an optocoupler, but not from one another; they are grouped in groups of 16.
4. What front connector is required?
A front connector is required and is not included. Use cable 6ES7392-4Bxx0-0AA0 or terminal blocks 6ES7392-1xN00-0AA0.
