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6ES7421-7BH01-0AB0 Siemens
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The SIMATIC S7-400 digital input module 6ES7421-7BH01-0AB0 is part of Siemens' SM 421 family, designed to interface field-level 24 V DC signals with the S7-400 PLC backplane. The module provides 16 isolated digital inputs with diagnostic capabilities and input delay settings, delivering status signals to the control system. It supports standard industrial use such as monitoring switches, sensors, and discrete devices in manufacturing, process control, and machinery automation environments.
Best Suited For
- Integration with SIMATIC S7-400 control racks
- Discrete input monitoring (e.g., sensors, switches)
- Applications requiring input diagnostics and delay parameterization
- Industrial manufacturing and process environments
Technical Specifications
I/O & Electrical
Communication & Power
Physical & Environmental
Certifications
RoHS compliant since 01 Mar 2008; WEEE take-back obligation. REACH information: contains lead, lead monoxide, TNPP above 0.1 % w/w. Phase-out announcement Siemens PM400, effective 01 Oct 2025.