Product Description
Key Features
- Digital input configuration: 16 parameterizable digital inputs in one group, with 16 simultaneously controllable inputs and 2 byte of input address space.
- 24 V DC input: Rated input voltage is 24 V DC; the permissible range is 19.2 V to 28.8 V DC, with reverse polarity protection.
- Counter function: 2 inputs can be used as counters, with a maximum counting frequency of 6 kHz and 32 bit counting width.
- Signal processing: Input delay is parameterizable from 0.05 ms to 20 ms; positive-edge and negative-edge evaluation are supported.
- Diagnostics and interrupts: The module has diagnostics, diagnostic alarms, hardware interrupts, supply-voltage monitoring, and wire-break detection to I < 350 μA.
- Firmware and connector: Firmware version is V2.2.0 and FW updates are possible. The front connector with screw terminals or push-in terminals is ordered separately.
Applications
- Counter operation: Use 2 digital inputs as counters with a maximum counting frequency of 6 kHz and 32 bit counting width.
Technical Summary
| Product type | DI 16x24VDC HF |
|---|---|
| Digital inputs | 16 |
| Input voltage, rated value (DC) | 24 V |
| Permissible input-voltage range | 19.2 V to 28.8 V DC |
| Counter inputs, max. | 2 |
| Counting frequency, max. | 6 kHz |
| Input delay | 0.05 ms to 20 ms |
| Firmware version | V2.2.0 |
| HW functional status | from FS04 |
| PROFINET GSD version | V2.3 / – |
| Front connector | Screw terminals or push-in terminals; ordered separately |
Frequently Asked Questions
Is 6ES7521-1BH00-0AB0 an active Siemens product?
Yes. It has the lifecycle status Active Product.
How many digital and counter inputs does this module have?
It has 16 digital inputs, of which 2 inputs can be used as counters.
What firmware is supplied with the module?
The firmware version is V2.2.0, and FW updates are possible.
Is the front connector included?
The front connector is not included; screw terminals or push-in terminals must be ordered separately.
