Product Overview
Technical Summary
| Product designation | DI 16×24 V DC HS |
|---|---|
| Digital inputs | 16 |
| Channel grouping | 16 channels in groups of 8 |
| Rated supply voltage | 24 V DC |
| Permissible supply voltage | 19.2 V to 28.8 V DC |
| Encoder supply | 16 outputs; 2x 24 V DC |
| Maximum encoder output current | 150 mA per group; 300 mA per module |
| Maximum counting frequency | 20 kHz |
| Input delay | 0.05 ms to 20 ms |
| Isochronous mode | Bus cycle time, min. 250 μs |
| Firmware version | V1.0.0 |
| Front connector | Screw terminals or push-in |
Key Features
- Product designation: DI 16×24 V DC HS digital input module for SIMATIC S7-1500.
- Channels and grouping: 16 digital input channels in groups of 8; 2 byte input address space and 0 byte output address space.
- Encoder supply: 16 outputs, 2x 24 V DC; output current is up to 150 mA per group and 300 mA per module, with electronic short-circuit protection per group.
- Input and counting functions: Parameterizable input delay from 0.05 ms to 20 ms, pulse extension, chatter monitoring, signal inversion, and up to 4 counters with counting frequency up to 20 kHz.
- Interfaces and engineering: Supports PROFIBUS from GSD version/GSD revision V1.0 / V5.1 and PROFINET from GSD version/GSD revision V2.3 / -; STEP 7 TIA Portal is configurable/integrated from STEP 7 V17 or higher.
- Connection and diagnostics: Front connector with screw terminals or push-in; supports diagnostics, diagnostic alarms, hardware interrupts, wire-break monitoring to I < 350 μA, and green and red status LEDs.
Applications
- Counting: Integrated counting function supports up to 20 kHz.
- Gate control: Parameterizable digital input functions support software or hardware gate start/stop.
- Diagnostics: The module supports supply-voltage and encoder-power-supply monitoring, diagnostic alarms, hardware interrupts, and wire-break monitoring to I < 350 μA.
Frequently Asked Questions
Which specifications distinguish Siemens 6ES7521-7BH00-0AB0?
Check the DI 16×24 V DC HS designation, 16 channels in groups of 8, 24 V DC encoder supply, parameterizable input delay from 0.05 ms to 20 ms, and counting frequency up to 20 kHz.
What should be checked on the module nameplate and order code?
Verify the complete code 6ES7521-7BH00-0AB0 and the module designation DI 16×24 V DC HS, then confirm the channel count, supply details, and front connector type.
Which firmware information is supplied for this module?
The firmware version is V1.0.0, and firmware updating is possible.
What quantity and destination are needed for a quotation?
Provide the required quantity and delivery destination for quotation processing.
