6ES7221-1BF32-0XB0

SIMATIC S7-1200 SM 1221 8-Channel Digital Input Module

SIMATIC S7-1200 SM 1221 8-Channel Digital Input Module for adding eight 24 v dc sink/source digital inputs to an s7-1200 station, supplied against the exact Siemens article number with installed-system compatibility checked before quotation.

BRANDSiemens

STOCK CONFIRMATIONIn Stock

CONDITIONBrand new and original

WARRANTY12 months

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Product overview

The Siemens 6ES7221-1BF32-0XB0 is a SIMATIC S7-1200 SM 1221 8-Channel Digital Input Module used for adding eight 24 v dc sink/source digital inputs to an s7-1200 station. Typical applications include sensor and limit-switch inputs and machine status monitoring.

Selection must follow the complete Siemens article number rather than appearance alone. Before ordering, confirm 24 v dc input level, sink/source sensor wiring, cpu expansion capacity and module position, terminal block, common potential and cable layout.

COMMON APPLICATIONS

Installed-system context

Sensor and limit-switch inputs
Machine status monitoring
Local S7-1200 I/O expansion

Tell us the controller, communication network and installed panel details. That context helps prevent a visually similar but incompatible replacement.

VERIFIED MODEL DATA

Technical specifications

Official documentation: Siemens official product record

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Manufacturer: Siemens
Article number / MPN: 6ES7221-1BF32-0XB0
Product designation: SIMATIC S7-1200 SM 1221 8-Channel Digital Input Module
Module type: SM 1221 digital input module
Input channels: 8 digital inputs
Input voltage: 24 V DC
Input characteristic: Sink/source
Connection: Removable front terminal block arrangement
Net weight: Approx. 0.150 kg

Technical values are compiled from official Siemens product documentation for this exact article number. Always check the delivered unit nameplate and revision before installation.

What to send for verification

• Complete Siemens article number and nameplate
• 24 V DC input level
• sink/source sensor wiring
• CPU expansion capacity and module position
• terminal block, common potential and cable layout
• Required quantity, destination and condition

What your quotation will state

• Exact quoted article number
• New, surplus or refurbished condition
• Available quantity and estimated lead time
• Warranty and proposed shipping method

Active S7-1200 signal module — confirm input circuit type, terminal wiring, CPU capacity and hardware revision.

BUYER QUESTIONS

Frequently asked questions

What is the Siemens 6ES7221-1BF32-0XB0?

It is a SIMATIC S7-1200 SM 1221 8-Channel Digital Input Module used for adding eight 24 v dc sink/source digital inputs to an s7-1200 station.

What should be checked before ordering?

Confirm the full article number, then verify 24 v dc input level, sink/source sensor wiring, cpu expansion capacity and module position.

Can a visually similar Siemens module be used instead?

Do not select by appearance alone. Hardware revision, firmware, signal type, interface, connector, rack and project compatibility can differ even when the housings look similar.

What information is needed for a quotation?

Send the complete article number, quantity, destination, required condition and a clear nameplate photo. We will confirm the quoted revision and lead time in writing.

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