? Product Overview

The Siemens 6ES7241-1AH32-0XB0 is a Digital Input (DI) expansion module designed for the SIMATIC S7-200 SMART PLC family. It provides additional digital inputs to expand the I/O capacity of the base CPU, enabling integration of more field devices such as sensors, switches, and pushbuttons.

This expansion unit is commonly used in modular automation systems where the standard CPU I/O count needs to be extended to meet application requirements.

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? Technical Specification

Parameter	Specification
Product Brand	Siemens
Product Family	SIMATIC S7-200 SMART
Module Type	Digital Input Expansion Module
Part Number	6ES7241-1AH32-0XB0
Digital Inputs	32 inputs
Input Voltage Level	24 V DC
Input Type	Sourcing type (positive logic)
Channel Configuration	32 × Digital Inputs
Isolation	Galvanically isolated inputs
Connection Terminal	Pluggable screw terminal
LED Indicators	Yes (for input status)
Mounting Type	DIN rail / Backplane bus for S7-200 SMART
Communication with CPU	Through S7-200 SMART backplane bus
Operating Temperature	Typically 0–55 °C (industrial)
Programming Compatibility	S7-200 SMART programming software
Typical Use Cases	Sensor integration, signal expansion, discrete inputs

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? Key Features

• Adds 32 additional digital inputs to S7-200 SMART PLC systems

• Supports 24 V DC input signals — standard industrial level

• Status LEDs for easy diagnostics

• Compact and roll-in mountable to S7-200 SMART rack

• Ideal for large sensor arrays, machine inputs, and discrete signal monitoring

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? Typical Applications

• Factory automation systems

• Packaging and material handling

• Conveyor signal expansion

• Water/wastewater control panels

• OEM machines requiring high input counts

S7-1200 PLC CPU Model Name,	Description,	Siemens Part Number        (Order Code)

CPU 1211C  DC/DC/DC

Entry-level compact PLC with integrated I/O

6ES7211-1AE40-0XB0

CPU 1211C AC/DC/Relay

AC supply, relay outputs variant

6ES7211-1BE40-0XB0

CPU 1211C DC/DC/Relay

DC power, relay outputs

6ES7211-1HE40-0XB0

CPU 1212C DC/DC/DC

Standard performance compact PLC

6ES7212-1AE40-0XB0

CPU 1212C AC/DC/Relay

AC version with relay outputs

6ES7212-1BE40-0XB0

CPU 1212C DC/DC/Relay

DC power with relay outputs

6ES7212-1HE40-0XB0

CPU 1214C DC/DC/DC

Mid-range compact CPU

6ES7214-1AG40-0XB0

CPU 1214C AC/DC/Relay

Mid-range CPU with AC/relay outputs

6ES7214-1BG40-0XB0

CPU 1214C DC/DC/Relay

Mid-range DC with relay outputs

6ES7214-1HG40-0XB0

CPU 1215C DC/DC/DC

Higher-performance CPU

6ES7215-1AG40-0XB0

CPU 1215C AC/DC/Relay

Higher performance with AC/relay

6ES7215-1BG40-0XB0

CPU 1215C DC/DC/Relay

Higher performance DC with relay

6ES7215-1HG40-0XB0

CPU 1217C DC/DC/DC

Top performance compact CPU

6ES7217-1AG40-0XB0