Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
submit
Home

Products

Siemens 6ES7321-1BH02-0AA0 S7-300 SM321 Digital Input front view
Siemens 6ES7321-1BH02-0AA0 S7-300 SM321 Digital Input side view
Siemens 6ES7321-1BH02-0AA0 S7-300 SM321 Digital Input detail view

Siemens 6ES7321-1BH02-0AA0 S7-300 SM321 Digital Input

Application: Isolated SM321 input module with sixteen 24 VDC channels.

Product familySIMATIC S7-300
Minimum order1 Piece
Applicable ratings16 DI; 24 VDC; 20-pin front connector
LifecyclePM410: Product cancellation since 2025-10-01
20 years of automation industry experience · Response within 24 hours
Inquire Now
  • Worldwide delivery
  • Delivery from stock
  • In stock really means in stock
  • No account required
  • Shipped from the China
Product Specifications
Manufacturer Siemens AG
Item number 6ES7321-1BH02-0AA0
Country of Origin Germany
Lead Time 2-3DAYS
After-Sales Support For after-sales support, please contact May.
HS Code / Commodity code Please confirm the destination before shipping
FAQ

Quotes are valid for 30 days from the day the quote is received unless stated otherwise at the time of quotation.

Yes,we offer one year warranty for all new products.

Yes. We worked with FEDEX/DHL/TNT/UPS/ allowing us to provide swift global delivery of parts to any corner of the world.

Normally 3-5 working days,some remote areas 5-7 days more.

Product information
Order-control reference
6ES7321-1BH02-0AA0
16-CHANNEL DIGITAL INPUT

Match every character of the complete ordering reference, including its suffix. A visually similar component or nearby model must not be treated as interchangeable unless the installed configuration is confirmed.

Exact-order technical data

6ES7321-1BH02-0AA0 Technical Data

Exact item scope
Input capacity16 digital inputs
Rated load voltage24 VDC; permissible supply range 20.4-28.8 VDC
Logic thresholdsSignal 0: -30 to +5 V; signal 1: 13-30 V
Typical ON current7 mA per active input
Input delay1.2-4.8 ms for either transition at rated voltage
Power loss3.5 W typical
Isolation500 VDC test between the input group and backplane bus
Connector and size20-pin front connector; 40 × 125 × 120 mm
Module weightApproximately 200 g
Model-specific application profile

Compact sixteen-point input profile

This narrow SM321 variant brings sixteen field states into an S7-300 rack through a twenty-pole front connector. The channel count and connector density distinguish it from the thirty-two-point version.

Signal roleCollects standard DC sensor and contact states for the PLC process image
Group architectureAll inputs form one potential group while remaining optically isolated from the backplane
Replacement checkRetain the existing front-connector pin plan and verify the spare-part suffix character by character

Commercial Confirmation

Industrial automation inspection and quotation support
Price and actual availabilityConfirmed for the requested quantity in the written quotation.
Supplied-item conditionIdentified in the quotation and order documents before purchase.
Warranty termsStated in the written quotation for the item being supplied.
Lead time and shippingPLC Autocontroller reference: 2–3 days. Actual timing is quoted by quantity, destination and required date.
Quote Preparation

Four details keep the quotation concise

ab@mooreplc.com
01Full item number
02Quantity
03Destination
04Required date
Product-Specific FAQ
Model-specific scope, verified data and ordering boundaries.
01

Can two-wire sensors be connected?

Yes. Siemens permits two-wire sensors with up to 1.5 mA quiescent current.

02

What cable lengths are published?

The maximum is 1,000 m for shielded cable and 600 m for unshielded cable.

03

Does this module generate diagnostic or hardware alarms?

No. The official record lists neither diagnostic alarms nor hardware interrupts.

04

How are active inputs indicated?

A green status indicator is provided for each digital input.

Additional Catalog References

Additional Automation Models

20 selected brand-model pairs
Brand Model Brand Model
RESOLVER R11W-F10/7-2 BST ps4000
PROFIBUS 1769-DPM EPSON SKP289-3
NIKON 4S015-173 NK-C304-40 4S015-205 C304-BT-31 ALSTOM 8961-4001
BRAUKMANN F76CS-1AA API MAC-B343-GM60
METRIX 5465E-103 NEXCOM PEAK760VL2 4BP00760D1X0
PACIFIC SCIENTIFIC SCE906A2-002-01 SCE906A200201 LAUER PCS810
Pro-face PL6931-T41-0005 SHARP JW-213S
HARDY HI 1756-WS API PS-3306D-E
XYCOM XVME-531 LOWARA SV206N07M
NETZTEIL DELTA E77-519-0300 NELES AUTOMATION A413135 AOU4
Email InquiryRequest a quotation by emailSend the required brand, model and quantity for quotation.
ab@mooreplc.com

Related Products

Siemens 6ES7322-1BL00-0AA0 S7-300 SM322 Digital Output front view
Siemens 6ES7322-1BL00-0AA0 S7-300 SM322 Digital Output

Application: Isolated SM322 module with thirty-two 24 VDC transistor outputs. Product familySIMATIC S7-300 Minimum order1 Piece Applicable ratings32 DO; 0.5 A per channel LifecyclePM410: Product cancellation since 2025-10-01 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7331-7KB02-0AB0 S7-300 SM331 Analog Input front view
Siemens 6ES7331-7KB02-0AB0 S7-300 SM331 Analog Input

Application: Isolated two-channel SM331 for voltage, current, thermocouple, RTD and resistance measurement. Product familySIMATIC S7-300 Minimum order1 Piece Applicable ratings2 AI; up to 14-bit plus sign LifecycleProduct Cancellation 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7332-5HB01-0AB0 S7-300 SM332 Analog Output front view
Siemens 6ES7332-5HB01-0AB0 S7-300 SM332 Analog Output

Application: Isolated two-channel SM332 voltage/current output module. Product familySIMATIC S7-300 Minimum order1 Piece Applicable ratings2 AO; 11/12-bit resolution LifecycleProduct Cancellation 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7332-5HD01-0AB0 S7-300 SM332 Analog Output front view
Siemens 6ES7332-5HD01-0AB0 S7-300 SM332 Analog Output

Application: Diagnostic four-channel SM332 module for isolated voltage/current outputs. Product familySIMATIC S7-300 Minimum order1 Piece Applicable ratings4 AO; 11/12-bit resolution LifecycleProduct Cancellation 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7405-0KA02-0AA0 S7-400 PS405 Power Supply front view
Siemens 6ES7405-0KA02-0AA0 S7-400 PS405 Power Supply

Application: PS405 wide-range DC-input power supply for the S7-400 backplane. Product familySIMATIC S7-400 Minimum order1 Piece Applicable ratings24/48/60 VDC input; 5 VDC / 10 A output LifecyclePM300: Active Product 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7407-0KA02-0AA0 S7-400 PS407 Power Supply front view
Siemens 6ES7407-0KA02-0AA0 S7-400 PS407 Power Supply

Application: PS407 universal 120/230 V AC/DC supply for an S7-400 backplane. Product familySIMATIC S7-400 Minimum order1 Piece Applicable ratings120/230 VAC or VDC; 5 VDC / 10 A output LifecyclePM300: Active Product 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7412-3HJ14-0AB0 S7-400H CPU 412-3H front view
Siemens 6ES7412-3HJ14-0AB0 S7-400H CPU 412-3H

Application: Replacement CPU 412-3H for S7-400H and S7-400F/FH systems. Product familySIMATIC S7-400H / S7-400F/FH Minimum order1 Piece Applicable ratings768 KB work memory; firmware V4.5 LifecyclePM410: Product cancellation since 2017-02-01 20 years of automation industry experience · Response within 24 hours

Details
Siemens 6ES7417-4HT14-0AB0 S7-400H CPU 417-4H front view
Siemens 6ES7417-4HT14-0AB0 S7-400H CPU 417-4H

Application: Repair-part CPU 417-4H for the matching redundant S7-400H configuration. Product familySIMATIC S7-400H Minimum order1 Piece Applicable ratings30 MB work memory; four interfaces LifecyclePM490: Final year of support; discontinued since 2023-10-01 20 years of automation industry experience · Response within 24 hours

Details
Newsletter

Subscrible & Get 15% Discount

Get 15% off your first purchaxse! Plus, be the first to know about sales new product launches and exclusive affers!
By subscribing you agree to our Terms & Conditions and Privacy & Coakies Palicy!

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
submit

Home

Products

WhatsApp

contact