Product Overview
Technical Summary
| Product type designation | DI 16x24VDC HF |
|---|---|
| Digital inputs | 16 |
| Counter inputs, max. | 2 |
| Counting frequency, max. | 6 kHz |
| Rated supply voltage (DC) | 24 V |
| Permissible supply voltage (DC) | 19.2 V to 28.8 V |
| Input delay | 0.05 ms to 20 ms |
| Firmware version | V2.2.0 |
| Front connector | Screw terminals or push-in; ordered separately |
Key Features
- Product designation: DI 16x24VDC HF digital input module for SIMATIC S7-1500.
- Digital inputs: 16 parameterizable digital inputs in groups of 16; all 16 inputs can be controlled simultaneously.
- Counter function: 2 inputs can be used as counters, with a maximum counting frequency of 6 kHz and 32-bit counting width.
- Input characteristics: 24 V DC rated input voltage; input delay is parameterizable from 0.05 ms to 20 ms.
- Diagnostics and interrupts: Has diagnostics, diagnostic alarms, hardware interrupts, supply-voltage monitoring, and wire-break detection to I < 350 μA.
- Front connection: Front connector with screw terminals or push-in terminals is ordered separately.
Frequently Asked Questions
What does Siemens order number 6ES7521-1BH00-0AB0 identify?
It identifies a SIMATIC S7-1500 DI 16x24VDC HF digital input module.
Which specifications distinguish this MLFB variant?
The module has 16 digital inputs, 2 counter inputs, a 24 V DC rated supply, parameterizable 0.05 ms to 20 ms input delay, and diagnostics.
What connection detail should be checked before ordering?
The front connector is not included and must be ordered separately; screw-terminal or push-in versions are available.
What details are needed for a quotation?
Provide the complete order number, required quantity, and destination.
