Key Features
- 16 digital inputs: Digital input module with 16 channels in groups of 16.
- Counter function on 2 inputs: 2 inputs can be used as counters.
- Diagnostics and hardware interrupts: Includes diagnostics and hardware interrupts for input monitoring.
- 24 V DC input module: Rated value (DC): 24 V; permissible range: 19.2 V to 28.8 V.
- Front connector ordered separately: Front connector with screw terminals or push-in to be ordered separately.
Applications
- Digital signal acquisition: Used for reading 16 digital inputs in a SIMATIC S7-1500 system.
- Counting tasks on inputs: Used when 2 inputs are needed as counters.
- Input diagnostics and interrupt handling: Used for input monitoring with diagnostics and hardware interrupts.
Technical Summary
| Product type designation | DI 16x24VDC HF |
|---|---|
| Number of digital inputs | 16 |
| Counter inputs | 2 |
| Input delay | 0.05..20 ms |
| Input type | 3 (IEC 61131) |
| Supply voltage, rated value (DC) | 24 V |
| Supply voltage, permissible range, lower limit (DC) | 19.2 V |
| Supply voltage, permissible range, upper limit (DC) | 28.8 V |
| Diagnostics function | Yes |
| Hardware interrupt | Yes |
| Front connector | screw terminals or push-in |
| Product lifecycle | Active Product |
Frequently Asked Questions
What is Siemens 6ES7521-1BH00-0AB0?
It is a SIMATIC S7-1500 digital input module DI 16×24 V DC HF.
How many digital inputs does 6ES7521-1BH00-0AB0 have?
It has 16 digital inputs in groups of 16.
Does 6ES7521-1BH00-0AB0 support counting?
Yes. 2 inputs can be used as counters.
What supply voltage does 6ES7521-1BH00-0AB0 use?
Rated value (DC) is 24 V, with a permissible range from 19.2 V to 28.8 V.
What connection terminal is needed for 6ES7521-1BH00-0AB0?
The front connector is to be ordered separately, with screw terminals or push-in.
