Description
The Siemens SIMATIC S7-300 Digital Module SM 323 (6ES7323-1BL00-0AA0) is a digital input/output expansion module designed for the S7-300 series Programmable Logic Controllers (PLCs). This module features optical isolation and provides 16 digital inputs and 16 digital outputs, all operating at 24V DC. With a maximum output current of 0.5A per channel and total current of 4A, it offers reliable signal processing in industrial environments. The module supports high-speed input/output operations with short response times and includes electronic protection features such as short-circuit protection for outputs. Its compact design and front connector interface make it ideal for expanding the I/O capacity of S7-300 PLCs in various automation applications.
Key Features
- Digital I/O Expansion Module for S7-300 PLC
- 16 digital inputs and 16 digital outputs
- Optical isolation between channels and backplane bus
- Output type: Transistor (24V DC)
- Maximum output current: 0.5A per channel, 4A total
- Short-circuit protection with electronic cutoff
- LED status indicators for each channel
- 40-pin front connector
- DIN rail mounting
- IP20 protection degree
- Country of origin: Germany
Technical Specifications
- Input Channels: 16 digital inputs
- Output Channels: 16 digital outputs
- Input Voltage: 24V DC (20.4-28.8V range)
- Input Current: 7mA typical
- Output Voltage: 24V DC
- Output Current: 0.5A per channel, 4A total
- Response Time: 1.2-4.8ms (rising/falling edge)
- Power Supply: 24V DC
- Backplane Bus Current: 80mA
- Power Loss: 6.5W typical
- Dimensions: 40mm x 125mm x 120mm
- Weight: approx. 0.35kg
- Operating Temperature: 0°C to +60°C
- Storage Temperature: -20°C to +85°C
- Relative Humidity: 5% to 95% non-condensing
- Protection Degree: IP20
- Certifications: CE, UL, CSA, FM
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Technical support for system integration
- Configuration assistance
- Compatibility verification with existing systems
- Commissioning assistance available
Delivery Time
- Standard delivery: 3-5 working days
- Express shipping available upon request
Why Choose Our Store
- Genuine Siemens SIMATIC components
- Global supply network with competitive pricing
- Expertise in industrial automation systems
- Comprehensive technical documentation
- Support for legacy system maintenance
Applications
- Industrial automation control systems
- Machine control applications
- Process automation systems
- Conveyor system control
- Pump and motor control
- Material handling equipment
- Building automation systems
- HVAC control applications
- Packaging machinery
- Distributed I/O systems
- Safety instrumentation systems
- Manufacturing execution systems





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