Technical Summary
| Product designation | SIMATIC S7-300, digital input SM 321 |
|---|---|
| Order number | 6ES7321-7BH01-0AB0 |
| Product lifecycle | Product cancellation |
| Number of digital inputs | 16 |
| Input voltage type | DC |
| Input voltage rated value | 24 V |
| Input characteristic curve | IEC 61131, type 2 |
| Input delay | 0.1 / 0.5 / 3 / 15 / 20 ms |
| Required front connector | 20-pin |
| Isolation tested with | 500 V DC |
Applications
Acquires 24 V DC digital signals through 16 digital inputs.
Supports diagnostic functions and hardware interrupt handling for digital input events.
Supports input operation in isochronous mode.
Key Features
Digital input module with 16 DI.
Input voltage type: DC; rated value (DC): 24 V.
Diagnostics function and hardware interrupt are parameterizable.
Required front connector: 20-pin.
Isolation tested with 500 V DC; between the channels and backplane bus: Yes; Optocoupler.
Suitable for isochronous mode.
Frequently Asked Questions
What is Siemens 6ES7321-7BH01-0AB0?
It is a SIMATIC S7-300 digital input SM 321 spare part.
How many inputs and what input voltage does this module have?
It has 16 digital inputs and a 24 V DC input voltage rated value.
What connection and isolation details are listed for this module?
The required front connector is 20-pin, and isolation is tested with 500 V DC.
What dimensions are listed for 6ES7321-7BH01-0AB0?
Width is 40 mm, height is 125 mm, and depth is 120 mm.
