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Siemens SIMATIC S7-221 Digital Input Module - 8 DI, 24V DC

Siemens SIMATIC S7-221 8-Channel Digital Input Module

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ManufacturerSiemens

Part number6ES7221-1BF20-0XA0

Type Digital Input Module EM 221

For CPU S7-22X Only

Number of Inputs 8

Voltage 24V DC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

8 Digital Inputs 24V DC operation Supports sink and source inputs For S7-22X CPUs Compact design

Product description

The Siemens 6ES7221-1BF20-0XA0 is a SIMATIC S7-221 Digital Input Module designed exclusively for S7-22X CPUs. It provides 8 digital inputs that operate on a 24V DC supply, supporting both sink and source input configurations.

This module is ideal for basic industrial monitoring and control applications where 24V DC signals need to be read by a Siemens S7-22X PLC. Its robust design ensures reliable performance in various industrial environments, such as manufacturing lines, packaging machinery, and building automation systems.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 6ES7221-1BF20-0XA0 and other automation components, ensuring you have access to quality parts to keep your operations running smoothly.

Technical specifications

Type	Digital Input Module EM 221
For CPU	S7-22X Only
Number of Inputs	8
Voltage	24V DC
Input Type	Sink/Source

Common applications

Industrial monitoring

Machine control

Process automation

Building control

Data acquisition

Compatible systems

SIMATIC S7-22X CPUs

Also known as

Siemens EM 221 Module, Siemens S7-221 DI

Technical note

Expert tip

Ensure correct wiring for sink or source input configuration based on your control voltage standard to prevent damage.

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Frequently asked questions

What type of Siemens CPUs is the 6ES7221-1BF20-0XA0 compatible with?

The Siemens 6ES7221-1BF20-0XA0 is specifically designed for use with Siemens SIMATIC S7-22X series CPUs. It is not compatible with other Siemens PLC families.