• Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board-YingZhou Automatization
  • Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board-YingZhou Automatization
  • Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board-YingZhou Automatization
  • Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board-YingZhou Automatization
  • Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board-YingZhou Automatization
  • Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board-YingZhou Automatization
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SIEMENS

Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board

Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 SB 1221 Digital Input Board

$92.99 USD
$92.99 USD
Sale Sold out
Model Number
YingZhou Industrial Automation | Product Information

Siemens 6ES7221-3BF50-0XB0 S7-1200 G2 Signal Board

SB 1221 DC | 8 Digital Inputs | 24V DC | Sink/Source | 100kHz
✓ IN STOCK & AVAILABLE TO ORDER  |  Actual Packaging Photos  |  Exact Catalog Number Verified on Carton
Specification Verified Product Data
Manufacturer Siemens AG
Catalog Number 6ES7221-3BF50-0XB0
Product Family SIMATIC S7-1200 G2
Module Family SB 1221
Product Designation SB 1221 Digital Input, 8 DI 100kHz
Product Type Digital Input Signal Board
Digital Input Channels 8
Rated Input Voltage 24V DC
Digital Input Type Sink / Source
High-Speed Input Capability 100kHz
Digital Output Channels None Specified
Expansion Type Signal Board
Compatible PLC Family SIMATIC S7-1200 G2
Standard S7-1200 Compatibility Not Established - Do Not Assume
Operating Temperature Refer to Exact Siemens Technical Data
Input Thresholds Not Independently Verified
Electrical Isolation Not Independently Verified
Functional Status - Actual Carton FS 02
Firmware - Actual Carton V01.00.00
Packaging Date Marking 09.2026
EAN / GTIN 4047623417187
Packaging Quantity 1 Piece
Country of Origin - Carton Made in China

Product Overview

The Siemens 6ES7221-3BF50-0XB0 is a SIMATIC S7-1200 G2 SB 1221 digital input signal board designed to expand the digital input capabilities of compatible S7-1200 G2 PLC systems. This signal board provides 8 digital inputs rated for 24V DC and supports sinking and sourcing input configurations. Siemens specifies a 100kHz high-speed input capability for the exact product model. The SB 1221 belongs to the new-generation SIMATIC S7-1200 G2 automation platform and must not be confused with conventional S7-1200 signal modules or older-generation signal boards. This product is a digital input expansion board rather than a digital output module or standalone PLC CPU. Actual Siemens packaging photographs show the matching catalog number 6ES7221-3BF50-0XB0, along with the SB 1221 DC designation, functional status FS 02 and firmware marking V01.00.00. The signal board inside the carton has not been separately photographed. Buyers should confirm the exact S7-1200 G2 CPU model, signal requirements and hardware compatibility before ordering.

Key Product Features

  • SIMATIC S7-1200 G2 Signal Board — Siemens SB 1221 digital input expansion for compatible next-generation PLC systems.
  • 8 Digital Input Channels — Eight digital inputs for industrial signal acquisition.
  • 24V DC Digital Inputs — Digital input channels rated for 24V DC signals.
  • Sink / Source Technology — Supports sinking and sourcing input configurations.
  • 100kHz Input Capability — High-speed digital input performance specified for this product.
  • Digital Input Expansion — Adds input channels to compatible S7-1200 G2 CPU configurations.
  • Exact Siemens Catalog Number — Order number 6ES7221-3BF50-0XB0 for precise procurement identification.

Actual Product Verification

✓ Actual Siemens packaging photographs supplied
✓ Packaging catalog number: 6ES7221-3BF50-0XB0
✓ Product family: SIMATIC S7-1200 G2
✓ Product designation: SB 1221 DC
✓ Packaging identifies DI 8 x 24V DC
✓ Functional status marking: FS 02
✓ Firmware marking: FW V01.00.00
✓ Packaging date marking: 09.2026
✓ Carton origin: Made in China
✓ Signal board hardware nameplate not separately photographed
✓ Confirm exact CPU compatibility and final package contents before ordering

In Stock & Available to Order

Siemens 6ES7221-3BF50-0XB0 is marked in stock based on the supplied inventory information. Actual Siemens packaging photographs show the matching catalog number and SIMATIC S7-1200 G2 SB 1221 digital input designation. This signal board is offered for compatible S7-1200 G2 PLC expansion, industrial maintenance and automation procurement. Please confirm the required quantity, 8 digital inputs, 24V DC signal requirements, sink/source configuration and 100kHz input capability before ordering. Compatibility with earlier-generation SIMATIC S7-1200 CPU models must not be assumed. The internal signal board and final delivered contents should be checked before shipment.

IN STOCK

Siemens 6ES7221-3BF50-0XB0

Contact us for exact-model verification, multiple units and industrial PLC signal board sourcing. Please confirm your S7-1200 G2 CPU model, 24V DC input configuration and high-speed signal requirements before ordering.

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