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MODULE

SIEMENS SIMATIC S7-1200 SM1221 Digital Input Module 16DI 24V DC – 6ES7 221-1BF32-0XB0

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₹ 13,000.00 ₹ 16,250.00 -20%
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Available 1

Parameter    Details
Brand:- Siemens
Series:- SIMATIC S7-1200 – SM1221
Part Number:- 6ES7 221-1BF32-0XB0
Number of Inputs:- 16 Digital Inputs (DI)
Input Voltage:- 24V DC
Input Type:- Sink/Source (PNP/NPN compatible)
Input Current:- ~7 mA per channel (typ.)
Isolation:- Galvanically isolated
Diagnostics:- LED per channel
Connection Type:- Screw terminals
Mounting:- DIN rail, side-mount to CPU
Operating Temp:- 0 to 55 °C
Application:- Sensors, switches, push buttons, field signals
Country of Origin:- Made In CHINA
Condition:- New Factory Sealed (As Per Photos)
Shipping:- Fast & Safe Worldwide shipping available.

Brand SIEMENS
Category MODULE
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  • 16 Digital Inputs, 24V DC sink/source compatible

  • Designed for SIMATIC S7-1200 PLC expansion

  • Fast signal acquisition for industrial sensors & switches

  • LED status indication for each channel

  • Compact DIN rail mounting beside CPU

  • Screw terminal connections for secure wiring

  • High noise immunity with galvanic isolation

  • Ideal for panel building, automation panels, and OEM machines

The Siemens SIMATIC S7-1200 SM1221 Digital Input Module (6ES7 221-1BF32-0XB0) is a high-performance 16-channel 24V DC digital input expansion module engineered for seamless integration with S7-1200 PLC systems. It enables reliable acquisition of field signals from proximity sensors, limit switches, push buttons, and other digital devices used in industrial automation.

This module mounts directly on the DIN rail next to the S7-1200 CPU, expanding the controller’s input capability without increasing panel complexity. Each input channel features LED diagnostics for quick troubleshooting and maintenance. With robust electrical isolation and industrial-grade design, the SM1221 ensures stable operation even in electrically noisy environments such as control panels and machinery.

Perfect for panel manufacturers, OEMs, and system integrators building automation panels, process control systems, and machine control applications.

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