SIEMENS SIMATIC S5 6ES5241-1AB11

SIEMENS SIMATIC S5 6ES5241-1AB11 – Digital Input Module, 32 Channels

The Siemens SIMATIC S5 6ES5241-1AB11 is a digital input module designed for integration into SIMATIC S5 programmable logic controller systems. This module provides 32 digital input channels, allowing the connection of a wide range of field devices such as sensors, switches, and pushbuttons. It is commonly used in industrial automation applications where discrete signal acquisition is required.

The 6ES5241-1AB11 module is part of the S5-135U and S5-155U systems. It supports 24V DC signal levels and is suitable for use in harsh industrial environments. The module features optical isolation between the input circuits and the logic bus to ensure reliable signal transmission and to protect the CPU and other system components from electrical disturbances.

Each input channel can be individually addressed and monitored by the user program. The module is connected to the backplane bus of the PLC rack and communicates directly with the CPU for real-time data processing. LED indicators on the front panel display the status of each input channel, which simplifies commissioning and diagnostics during operation.

Technical specifications:

• Model number: 6ES5241-1AB11

• Type: Digital Input Module

• Number of inputs: 32 channels

• Signal type: 24V DC

• Isolation: Optically isolated inputs

• Input current: Typically 5 mA per channel

• Status indicators: Individual LEDs for each channel

• Mounting: Installed in S5 PLC rack

• System compatibility: SIMATIC S5-135U / S5-155U

• Operating temperature: Standard industrial range

• Dimensions: Standard module size for S5 rack

• Weight: Approx. 0.6 kg

This module is used in a variety of automation scenarios, including discrete manufacturing, assembly lines, packaging systems, and material handling equipment. It allows precise and reliable capture of on/off states from field-level sensors and provides essential digital input capability in classic SIMATIC S5-based systems.

Though officially discontinued, the 6ES5241-1AB11 remains in use across many legacy installations. It is a proven and durable component that continues to play a key role in the maintenance and extension of long-operating industrial automation systems.