SIMATIC S7-200 EM 221 Digital 8 AC Inputs (8 x 120/230 VAC) / 6ES7221-1EF22-0XA0

Classic S7-200 digital expansion module. Specifications follow the August 2008 manufacturer manual. Verify host CPU expansion capacity, load limits and supplied revision before ordering; current lifecycle and supply are not established by this historical document.

Manufacturer part number: 6ES7221-1EF22-0XA0
Brand: Siemens
Category: PLC and HMI
Catalog status: Request a quotation

Technical specifications

Controller family: SIMATIC S7-200
Digital inputs: 8 x 120/230 VAC
Digital outputs: None
Removable connector: Yes
Generation scope: Classic S7-200 exact ordering code; not S7-200 CN or SMART; verify host CPU expansion capacity and installation requirements
Reviewed document edition: 08/2008 / A5E00307987-04
Document pages: PDF 419-422 and 509; ordering row and applicable electrical specification column
Current lifecycle status: Not established by historical manual; confirm current lifecycle and supply separately
Input method: IEC Type 1 AC
Maximum input delay: 15 ms

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: 6ES7221-1EF22-0XA0 · Checked: 2026-10-22Official 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.