S7-200 EM 221 8-channel digital input module / 6ES7221-1BF22-0XA0

6ES7221-1BF22-0XA0 belongs to classic S7-200. Specifications are from the August 2008 manufacturer manual and apply to the exact ordering suffix. Do not substitute CN or SMART variants. Confirm supplied revision, current lifecycle and sourcing separately.

Manufacturer part number: 6ES7221-1BF22-0XA0
Brand: Siemens
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: SIMATIC S7-200
Digital inputs: 8 x 24 V DC
Digital outputs: None
Removable connector: Yes
Dimensions (W x H x D): 46 x 80 x 62 mm
Generation scope: Classic S7-200 exact ordering code; not S7-200 CN or SMART
Reviewed document edition: 08/2008 / A5E00307987-04
Document pages: PDF 419 and 509; exact digital module ordering row
Current lifecycle status: Not established by the historical manual; confirm current model lifecycle and supply separately

Manufacturer manual · S7-200 System Manual / 08/2008 / A5E00307987-04 · en · PDF · 08/2008 / A5E00307987-04Manufacturer source: Siemens · Model explicitly covered in family document · Covered models: 6ES7221-1BF22-0XA0 · Checked: 2026-10-17Official manufacturer source

This sheet provides a quick technical summary. For design, installation and final selection, review the latest official manufacturer documentation and verify the complete part number.