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Siemens 6ES7221-1BH32-0XB0 SM 1221 16-Channel Digital Input Module

6ES7221-1BH32-0XB0
6ES7221-1BH32-0XB0
6ES7221-1BH32-0XB0

Siemens 6ES7221-1BH32-0XB0 SM 1221 16-Channel Digital Input Module

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SIEMENS · SIMATIC S7-1200

6ES7221-1BH32-0XB0

SM 1221 16-Channel Digital Input Module

MANUFACTURERSiemens
MODEL6ES7221-1BH32-0XB0
PART NUMBER6ES7221-1BH32-0XB0
PRODUCT TYPESM 1221 16-Channel Digital Input Module
SYSTEM FAMILYSIMATIC S7-1200
ORDER SUPPORTModel Verification

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AMIKON supplies industrial automation spare parts to maintenance, engineering and procurement teams worldwide. Our focus includes discontinued and hard-to-find DCS, PLC and TSI components, helping customers identify the correct model, source replacement parts and support urgent maintenance requirements.

Discontinued Parts SourcingModel Identification SupportGlobal Customer SupportIn-Stock Supply Support
  • Item NO.:

    6ES7221-1BH32-0XB0
  • Order(MOQ):

    1
  • Product Origin:

    Germany
  • Lead Time:

    IN STOCK
  • Brand/Manufature:

    Siemens
  • Product Origin:

    Germany
  • Lead Time:

    IN STOCK
  • Condition:

    Brand New And 100% Original
  • Certificate:

    COO

Siemens SIMATIC S7-1200

6ES7221-1BH32-0XB0

Price and Availability Inquiry

Siemens 6ES7221-1BH32-0XB0 is a SIMATIC S7-1200 SM 1221 signal module with 16 sink/source digital inputs for 24 V DC sensors.

Sales SupportDirect specialist contact
QuotationCurrent commercial details
DeliveryDHL · FedEx · UPS
Fast quotation support Send the model and required quantity directly to Lisa Lin using the contact options on the right.

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For faster service, please include the model 6ES7221-1BH32-0XB0 and required quantity in your inquiry.

Siemens 6ES7221-1BH32-0XB0

Technical Specifications

Official Siemens supply, input, timing and environmental data for the SM 1221 digital input module.

01Product IdentityExact Siemens reference
ManufacturerSiemens
Part Number6ES7221-1BH32-0XB0
Product DesignationSM 1221 DI 16 × 24 V DC
System FamilySIMATIC S7-1200
02Input DataPublished channel values
Digital Inputs16
Input TypeSink / Source
Channel Grouping4 channels per group
IEC CharacteristicIEC 61131 Type 1
03Electrical & TimingPublished performance data
Supply Range20.4–28.8 V DC
Backplane Current130 mA max. at 5 V DC
Signal 1 Current4 mA typical
Input Delay0.2–12.8 ms parameterizable
04Physical & EnvironmentPublished module data
Dimensions (W × H × D)45 × 100 × 75 mm
Net WeightApprox. 0.19 kg
Operating Temperature−20 to +60 °C
Protection RatingIP20

Siemens 6ES7221-1BH32-0XB0 Product Support

Frequently Asked Questions

Sensor wiring, sink/source use, delay settings, grouping, diagnostics, installation and ordering guidance for SM 1221 16 DI.

01

What type of signals does 6ES7221-1BH32-0XB0 accept?

It provides sixteen 24 V DC digital inputs that can be used with sink or source field wiring when connected according to the Siemens diagram.

02

What supply tolerance is allowed?

The published DC supply range is 20.4 to 28.8 V. Verify the sensor supply remains within this range under load.

03

How are the input delays assigned?

Delays from 0.2 to 12.8 ms are selectable in groups of four channels, allowing faster or more noise-tolerant input behavior.

04

What are the logic thresholds?

Siemens specifies signal 0 at 5 V DC and 1 mA, and signal 1 at 15 V DC and 2.5 mA; typical signal-1 current is 4 mA.

05

Does the module provide channel status diagnostics?

Input status LEDs are provided, and diagnostic alarms are supported. Configure the required functions in the S7-1200 project.

06

What installation items are required?

Provide the specified front connector, mount the module beside a compatible S7-1200 CPU and observe the IP20 enclosure and temperature requirements.

07

Which details should be supplied for an order?

Provide 6ES7221-1BH32-0XB0, CPU type and firmware, sink/source wiring method, front connector requirement and quantity.

Order Fulfilment

Payment and Worldwide Delivery

AMIKON coordinates product verification, commercial confirmation, packing and international shipment for industrial automation parts. Each order is handled according to the confirmed model, quantity and delivery destination.

01

Order Confirmation

Model, part number, quantity, availability, lead time and payment terms are confirmed in the formal quotation or proforma invoice.

02

Product Preparation

The item reference is checked before dispatch. Packaging is selected to protect industrial components during international transport.

03

International Shipping

Shipment can be arranged through DHL, FedEx or UPS according to the destination, parcel size and confirmed order requirements.

04

Dispatch and Tracking

Dispatch information and the available tracking reference are shared after the shipment has been collected by the selected carrier.

AMIKON Service Standards

Support at Every Stage of Your Order

Clear assistance from initial product identification through dispatch and after-sales communication.

01
Product IdentificationThe manufacturer, complete model and part-number details are reviewed before quotation.
02
Dedicated Sales ContactLisa Lin provides quotation and order communication through email and WhatsApp.
03
Order DocumentationCommercial, packing and shipment details are supplied according to the confirmed order.
04
After-Sales CommunicationFor support, provide the order reference, product label, fault description and clear photos.
05
Pre-Dispatch VerificationThe product label, model reference, quantity and visible condition are checked against the confirmed order before packing.
06
Global Logistics CoordinationInternational express or freight arrangements are coordinated according to the destination, shipment size and confirmed delivery terms.
Important delivery information

Product availability, dispatch date, freight cost and delivery time depend on the confirmed order and destination. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order. Please contact AMIKON for current commercial and shipping details.

AMIKON Professional Services

Warranty, Sourcing and Global Export Support

With 20 years of experience in industrial automation, AMIKON supplies discontinued and hard-to-find DCS, PLC and TSI spare parts to customers worldwide.

01 · WARRANTY

12-Month Product Warranty

Products supplied by AMIKON include a standard 12-month warranty. Warranty handling is based on the confirmed order, product label, fault information and supporting photos or videos.

02 · SPECIALIST SOURCING

Discontinued and Hard-to-Find Parts

Our sourcing service focuses on industrial automation DCS, PLC and TSI spare parts, including obsolete, discontinued and scarce models required for maintenance and replacement projects.

03 · GLOBAL EXPORT LOGISTICS

One-Stop International Shipping

AMIKON can coordinate domestic export customs procedures and arrange international express or sea freight. Packing lists, commercial invoices and available origin documentation can be prepared according to the confirmed order.

04 · TECHNICAL INFORMATION

Model and Specification Support

We assist customers with model identification, specification review, compatibility checks and Datasheet or manual searches. Support also includes distinguishing earlier and later model versions and checking whether a submitted model reference is complete and correctly written.

05 · PRE-DISPATCH CHECK

Product Verification Before Shipment

The product label, complete model, part number, quantity and visible condition are reviewed against the confirmed order before packing.

06 · INDUSTRIAL PACKAGING

Secure Packing for International Transit

Packaging is selected according to the component type, shipment size and transport method to support safe international handling.

07 · ORDER DOCUMENTATION

Commercial and Shipping Documents

Commercial invoices, packing lists and available origin information can be prepared according to the confirmed order and destination requirements.

08 · AFTER-SALES SUPPORT

Responsive Order Follow-Up

For order support, customers can provide the order reference, product label, issue description and clear photos for review by the AMIKON team.

Need help identifying a spare part?Send the complete manufacturer, model, part number and clear product-label photos to Lisa Lin.

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