Industrial automation technical reference
ARAN VISIONفارسی
Siemens6ES7421-1BL01-0AA0

SIMATIC S7-400 SM421 32-input digital module / 6ES7421-1BL01-0AA0

Siemens6ES7421-1BL01-0AA0Product image is not available.

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ARAN VISION reference
AV-REF-Siemens-6ES7421-1BL01-0AA0
Category
PLC and HMI
Manufacturer sourcing lead time
Manufacturer confirmation required

Delivery to your location is confirmed separately.

Documents / datasheets
ARAN VISION specification sheet

Technical specifications

Controller family
SIMATIC S7-400
Module designation
SM421
Width (mm)
25
Height (mm)
290
Depth (mm)
210
Approximate weight (g)
500
Digital inputs
32
Rated input
24 V DC
Input signal 0
-30..5 V DC
Input signal 1
13..30 V DC
Typical input current (mA)
7
Channels per isolation group
32
Isolation from backplane
Yes
Document pages
PDF 54, 55, 56
Reviewed document edition
ST 400 / May 2017 / E86060-K4678-A151-A1-7600
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Documents / datasheets

Manufacturer technical catalog · ST 400 / May 2017 / E86060-K4678-A151-A1-7600 · en · PDF · ST 400 / May 2017 / E86060-K4678-A151-A1-7600Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7421-1BL01-0AA0 · Checked: 2026-10-17View / print the ARAN VISION specification sheetOfficial manufacturer source · Siemens

Source reviewed: 2026-10-17

Description

SIMATIC S7-400 SM421 32-input digital module; specifications are qualified to the May 2017 official catalogue. Verify current lifecycle, supplied revision and project configuration when requesting a quote.

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Products in the same technical family

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Siemens
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Integrated interfaces: MPI/PROFIBUS DP; PROFINET with 2 RJ45 portsOptional interface: IF 964-DP; 6ES7964-2AA04-0AB0; sold separately

Technical specificationsManufacturer technical catalog · ST 400 / May 2017 / E86060-K4678-A151-A1-7600 · en · PDF · ST 400 / May 2017 / E86060-K4678-A151-A1-7600Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7414-3EM07-0AB0 · Checked: 2026-10-17