Product Description
Key Features
- Digital input capacity: 16 digital inputs with input characteristics according to IEC 61131, type 1.
- Input voltage: Rated input voltage: 24 V DC; signal "0": -30 to +5 V; signal "1": 13 to 30V.
- Load voltage: Rated load voltage L+: 24 V DC, with a permissible range of 20.4 V to 28.8 V.
- Isolation and connection: The digital inputs are isolated from the backplane bus by an optocoupler. Required front connector: 20-pin.
- Installation capacity: Maximum 16 inputs for horizontal installation up to 40 °C, horizontal installation up to 60 °C, and vertical installation up to 40 °C.
- Lifecycle status: Product cancellation.
Technical Summary
| Product identity | 6ES7321-1BH02-0AA0, SIMATIC S7-300 digital input SM 321 |
|---|---|
| Digital inputs | 16 |
| Rated input voltage | 24 V DC |
| Signal "0" input voltage | -30 to +5 V |
| Signal "1" input voltage | 13 to 30V |
| Rated load voltage L+ | 24 V DC |
| Permissible load-voltage range | 20.4 V to 28.8 V |
| Required front connector | 20-pin |
| Backplane-bus isolation | Yes; Optocoupler |
| Lifecycle | Product cancellation |
Frequently Asked Questions
What order number should be confirmed for this module?
Confirm the complete order number 6ES7321-1BH02-0AA0.
How many digital inputs does it have?
It has 16 digital inputs.
What input voltage does it use?
The rated input voltage is 24 V DC. Signal "0" is -30 to +5 V, and signal "1" is 13 to 30V.
Which front connector is required?
A 20-pin front connector is required.
What is its lifecycle status?
Its lifecycle status is Product cancellation.
