Technical Summary
| Product family | SIMATIC S7-300 |
|---|---|
| Product type | digital input SM 321 |
| Spare part status | spare part |
| Number of digital inputs | 16 |
| Input voltage type | DC |
| Input voltage rated value | 48 V; 48 V DC to 125 V DC |
| Load voltage L+ rated value | 48 V |
| Load voltage L+ permissible range, upper limit | 125 V |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Connection method required front connector | 20-pin |
| Product lifecycle | Product cancellation |
Applications
Digital input signal acquisition
Digital input collection for 16 DC input signals.
Front-connector-based module connection
Connection through a 20-pin front connector.
Key Features
SIMATIC S7-300 digital input module
Digital input SM 321 for the SIMATIC S7-300 family.
16 digital inputs
Provides 16 DI.
48-125 V DC input range
Supports 48-125 V DC.
Isolated design
The digital inputs are isolated.
20-pin front connector
Requires a 20-pin front connector.
Product cancellation
Supplied lifecycle status: Product cancellation.
Frequently Asked Questions
What is Siemens 6ES7321-1CH20-0AA0?
It is a SIMATIC S7-300 digital input SM 321 spare part.
How many digital inputs does 6ES7321-1CH20-0AA0 have?
It has 16 digital inputs.
What input voltage range does 6ES7321-1CH20-0AA0 support?
The input voltage rating is 48 V; 48 V DC to 125 V DC.
What connector does 6ES7321-1CH20-0AA0 require?
It requires a 20-pin front connector.
What is the lifecycle status of 6ES7321-1CH20-0AA0?
Product lifecycle: Product cancellation.
