Siemens Modules 6ES7521-1BL00-0AB0

The Siemens 6ES7521-1BL00-0AB0 module is a high-feature (HF) digital input module designed for use with the SIMATIC S7-1500 and ET 200MP distributed I/O systems. This module provides 32 digital input channels (24 V DC) and is widely used in industrial automation for reliable signal acquisition.

Specification:

Article Number: 6ES7521-1BL00-0AB0.
Module Type: Digital Input (DI) HF (High Feature).
Nominal Input Voltage: 24 V DC.
Dimensions (WxHxD): 35 mm x 147 mm x 129 mm.
Weight Approx: 0.321 kg.
Brand: Siemens
Country Of Origin: Germany.

The module includes comprehensive diagnostic functions (e.g., supply monitoring, wire-break detection) and supports hardware interrupts, allowing for quick fault identification.