Siemens 6ES7323-1BL00-0AA0 SIMATIC S7-300 SM323 16DI 16DO 24V DC I/O Module

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Siemens 6ES7323-1BL00-0AA0 is a combined SIMATIC S7-300 digital input and digital output signal module used in industrial automation, machine maintenance, exact-part replacement, and installed-base support.

The Siemens 6ES7323-1BL00-0AA0 SM 323 combines sixteen 24 VDC digital inputs and sixteen 24 VDC digital outputs in one S7-300 signal module. The input side is designed for field devices such as mechanical switches and 2-, 3-, or 4-wire proximity sensors, while the outputs are suitable for common 24 VDC loads including solenoid valves, DC contactors, and indicator lamps. Combining both directions of I/O into one module made the SM 323 attractive in machine panels where rack space was limited and a balanced group of inputs and outputs was required.

This page is built around the exact manufacturer reference 6ES7323-1BL00-0AA0. Industrial components that look similar can differ in firmware, voltage, signal type, I/O architecture, connector style, communications, safety functions, or machine-specific configuration. Using the exact part number helps reduce engineering changes, troubleshooting, and production downtime.

Lifecycle / sourcing status

Mature S7-300 mixed digital I/O module with a large installed base. It remains highly relevant as a machine spare even where the surrounding S7-300 platform is being phased out.

Key product details

  • Product family: SIMATIC S7-300 SM 323
  • Digital inputs: 16
  • Digital outputs: 16
  • Rated input voltage: 24 V DC
  • Rated output/load voltage: 24 V DC
  • Output current class: 0.5 A per output class
  • Input isolation: Inputs isolated in groups of 16
  • Output isolation: Outputs isolated in groups of 8
  • Input devices: Switches and 2-/3-/4-wire proximity sensors
  • Typical output loads: Solenoid valves, DC contactors, indicator lights

Common applications

S7-300 machine cabinets, packaging equipment, conveyor controls, production cells, assembly machinery, process skids, OEM machines, and maintenance replacement of mixed digital I/O.

Compatibility and ordering note: Verify the exact 6ES7323-1BL00-0AA0 article number, rack and CPU hardware configuration, front connector, address assignment, output-current requirements, field wiring, STEP 7 project configuration, and module slot before replacement.

Why this part is commonly sourced: A combined 16-input/16-output module can be costly to redesign around. Exact replacement preserves thirty-two field points, the rack layout, I/O addresses, wiring, and the existing PLC hardware configuration.

Need 6ES7323-1BL00-0AA0? Corwin Solutions helps industrial buyers, maintenance teams, OEMs, integrators, and machine builders locate exact automation and MRO components, including current, legacy, obsolete, discontinued, and spare-part hardware. Availability, condition, exact configuration, pricing, and lead time are confirmed at quotation.

Siemens 6ES7323-1BL00-0AA0 is a combined SIMATIC S7-300 digital input and digital output signal module used in industrial automation, machine maintenance, exact-part replacement, and installed-base support.

The Siemens 6ES7323-1BL00-0AA0 SM 323 combines sixteen 24 VDC digital inputs and sixteen 24 VDC digital outputs in one S7-300 signal module. The input side is designed for field devices such as mechanical switches and 2-, 3-, or 4-wire proximity sensors, while the outputs are suitable for common 24 VDC loads including solenoid valves, DC contactors, and indicator lamps. Combining both directions of I/O into one module made the SM 323 attractive in machine panels where rack space was limited and a balanced group of inputs and outputs was required.

This page is built around the exact manufacturer reference 6ES7323-1BL00-0AA0. Industrial components that look similar can differ in firmware, voltage, signal type, I/O architecture, connector style, communications, safety functions, or machine-specific configuration. Using the exact part number helps reduce engineering changes, troubleshooting, and production downtime.

Lifecycle / sourcing status

Mature S7-300 mixed digital I/O module with a large installed base. It remains highly relevant as a machine spare even where the surrounding S7-300 platform is being phased out.

Key product details

  • Product family: SIMATIC S7-300 SM 323
  • Digital inputs: 16
  • Digital outputs: 16
  • Rated input voltage: 24 V DC
  • Rated output/load voltage: 24 V DC
  • Output current class: 0.5 A per output class
  • Input isolation: Inputs isolated in groups of 16
  • Output isolation: Outputs isolated in groups of 8
  • Input devices: Switches and 2-/3-/4-wire proximity sensors
  • Typical output loads: Solenoid valves, DC contactors, indicator lights

Common applications

S7-300 machine cabinets, packaging equipment, conveyor controls, production cells, assembly machinery, process skids, OEM machines, and maintenance replacement of mixed digital I/O.

Compatibility and ordering note: Verify the exact 6ES7323-1BL00-0AA0 article number, rack and CPU hardware configuration, front connector, address assignment, output-current requirements, field wiring, STEP 7 project configuration, and module slot before replacement.

Why this part is commonly sourced: A combined 16-input/16-output module can be costly to redesign around. Exact replacement preserves thirty-two field points, the rack layout, I/O addresses, wiring, and the existing PLC hardware configuration.

Need 6ES7323-1BL00-0AA0? Corwin Solutions helps industrial buyers, maintenance teams, OEMs, integrators, and machine builders locate exact automation and MRO components, including current, legacy, obsolete, discontinued, and spare-part hardware. Availability, condition, exact configuration, pricing, and lead time are confirmed at quotation.