
6ES7523-1BL00-0AA0 SIMATIC S7-1500 Digital Input/Output Module
This entry details the Siemens 6ES7523-1BL00-0AA0 module within the SIMATIC S7-1500 series. The device integrates sixteen digital inputs and outputs for industrial automation control tasks.
Quick Facts
- Part number
- 6ES7523-1BL00-0AA0
- Brand
- Siemens
- Category
- I/O Modules
- Product type
- SM 523 digital input/output modules
- Lifecycle
- Active Product
- Dimensions
- 20.3 x 15.1 x 3.7 cm
- Net weight
- 0.356 Kg
- Source category
- SM 523 digital input/output modules
Product Overview
The Siemens 6ES7523-1BL00-0AA0 functions as a digital input/output module designed for the SIMATIC S7-1500 automation system. It provides a compact solution for managing discrete signals in industrial environments.
This specific unit combines sixteen digital inputs operating at 24V DC with sixteen digital outputs capable of switching loads. The module supports standard IEC 61131 input types for reliable signal processing.
Technical Review Notes
- Input configuration includes sixteen channels grouped together, featuring a typical input delay of approximately 3.2 milliseconds for signal detection.
- Output configuration consists of sixteen channels arranged in groups of eight, delivering 24V DC at 0.5A per channel with a total group capacity of 4A.
- The module supports safety-oriented shutdown of load groups, meeting SIL2 standards per EN IEC 62061:2021 and Category 2/PL c per EN ISO 13849-1:2015.
- Physical dimensions are recorded as 20.3 cm by 15.1 cm by 3.7 cm, with a net weight of 0.356 kilograms for handling considerations.
- The product lifecycle status is listed as Active Product, indicating ongoing support and documentation review details for current engineering projects.
- Delivery includes a front connector with push-in technology, facilitating straightforward wiring connections during installation procedures on DIN rails.
Model Identification
- Identify the unit by the full part number 6ES7523-1BL00-0AA0 to ensure correct specification matching in technical documentation.
- Recognize the normalized identifier 6ES75231BL000AA0 for database indexing and cross-referencing within inventory management systems.
- Classify the item under the brand Siemens and the product class of SM 523 digital input/output modules.
- Locate the component within the Automation technology category, specifically under Digital modules and IO modules sub-sections.
Technical Parameters
| Product type | SM 523 digital input/output modules |
|---|---|
| Lifecycle | Active Product |
| Dimensions | 20.3 x 15.1 x 3.7 cm |
| Net weight | 0.356 Kg |
| Source category | SM 523 digital input/output modules |
Parameters are factual source fields retained for model review.
Parameter Review
- Verify the input voltage rating of 24V DC matches the power supply characteristics of the target control cabinet environment.
- Confirm the output current limit of 0.5A per channel aligns with the load requirements of connected actuators or indicators.
- Check that the safety integrity level SIL2 meets the functional safety requirements defined in the plant design documentation.
- Ensure the physical footprint of 20.3 x 15.1 x 3.7 cm fits within the recorded rack space constraints.
- Review the typical input delay of 3.2 ms to assess suitability for high-speed signal processing applications.
Catalog Classification
Image & Label Review
- Inspect the front panel labeling to confirm the part number 6ES7523-1BL00-0AA0 is clearly visible and legible.
- Examine the terminal block area to verify the presence of push-in connectors for wire termination points.
- Check the status LED indicators on the module face to understand the visual feedback mechanism for operation.
- Observe the mounting rail interface to ensure the clip mechanism is intact for secure DIN rail attachment.
Product Image Gallery

Inquiry Preparation
- Prepare project documents specifying the required quantity of modules needed for the expansion rack configuration.
- Gather technical drawings showing the rack layout to confirm spatial application context with the 20.3 cm width dimension.
- Compile electrical schematics highlighting the 24V DC input and output circuits to validate voltage and current ratings.
- List safety certification requirements to ensure the SIL2 and PL c ratings meet regulatory compliance standards.
Category Context
This module belongs to the broader category of Automation technology solutions for process and discrete manufacturing.
It falls under Digital modules, serving as a key interface between programmable logic controllers and field devices.
Review Notes
- Cross-reference the source category path to ensure accurate classification within the digital input/output product family.
- Validate the lifecycle status as Active Product to confirm long-term review details for future maintenance needs.
- Compare the net weight of 0.356 kg against shipping and handling estimates for logistical planning purposes.
- Review the inclusion of the front connector push-in to determine if additional wiring accessories are necessary.



