Communication Module | Siemens | 6ES7523-1BL00-0AA0 S7-1500 digital module 6ES7 523-1BL00-0AA0

Product Description: Siemens 6ES7523-1BL00-0AA0

The Siemens 6ES7523-1BL00-0AA0 is a compact digital I/O module for the SIMATIC S7-1500 series. It provides 16 digital inputs and 16 digital outputs in a single 25 mm-wide module, making it ideal for applications requiring high- density signal interfacing. Operating at 24 V DC, it is designed for fast and reliable control in industrial automation systems. The module features status LEDs, short-circuit protection, and group-wise current limitation for increased safety and diagnostics.

Key Features

• Digital Inputs: 16 channels
• Input Rated voltage: 24 V DC
• Input current: ~2.7 mA per channel
• Input delay: ~3.2 ms
• Input type: IEC 61131 Type 3
• Digital Outputs: 16 channels
• Output Rated voltage: 24 V DC
• Max output current per channel: 0.5 A
• Total current per group (8 channels): max. 4 A
• Total current per module: max. 8 A
• Short-circuit protection: Yes
• Inductive shutdown voltage: up to L+ –53 V
• Additional Functions: Shared I/O mode supported (MSI/MSO)
• No isochronous operation support
• No parameterizable diagnostics
• LED indicators for channel status and module condition

Technical Specifications

• Input Channels: 16
• Output Channels: 16
• Input Voltage: 24 V DC
• Output Voltage: 24 V DC
• Output Current per Channel: 0.5 A
• Input Delay Time: ~3.2 ms
• Total Module Width: 25 mm
• Module Dimensions (W × H × D): 25 mm × 147 mm × 129 mm
• Mounting: DIN Rail (ET 200MP- compatible)
• Protection Class: IP20
• Operating Temperature: 0 °C to +60 °C (horizontal) / +40 °C (vertical)
• Weight: Approx. 280 g

Application Areas

• General-purpose digital signal interfacing in industrial automation
• Compact I/O solutions for machine control, packaging lines, and conveyor systems
• Central and distributed I/O in SIMATIC S7-1500 and ET 200MP environments
• Applications requiring a balanced mix of input and output signals in limited space

Advantages

• High-Density Design: Combines 16 DI and 16 DO channels in just 25 mm width
• Fast Wiring: Includes 40-pin front connector with push-in terminals for quick installation
• Reliable Operation: Built-in short-circuit protection and LED status indication
• System Compatibility: Seamlessly integrates into S7-1500 PLC systems or ET 200MP I/O stations
• Cost-Effective: Reduces module count and wiring effort in signal-rich applications