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Siemens 6ES7321-1BH02-0AA0 SIMATIC S7-300 Digital Input Module

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Siemens 6ES7321-1BH02-0AA0 | SIMATIC S7-300 Digital Input Module

by Siemens

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OverviewThe Siemens 6ES7321-1BH02-0AA0 SIMATIC S7-300 digital input module is a vital component for robust industrial automation. Designed for seamless integration with the renowned SIMATIC S7-300 PLC series, this module offers exceptional accuracy and reliability in signal acquisition. With 16 isolated digital inputs operating at a standard 24V DC, it provides a crucial interface for connecting various field devices, ensuring precise data capture and efficient process control in diverse industrial environments. This module is built for demanding industrial settings, providing a dependable solution to boost the performance and safety of your automation.Key Features 16 Isolated Digital Inputs: Enables the connection of numerous digital signals, ensuring comprehensive data acquisition and processing for complex automation. 24V DC Operating Voltage: Optimized for standard industrial power supplies, delivering stable and consistent performance in challenging operational conditions. Advanced Electrical Isolation: Inputs are thoroughly isolated in groups of 16, significantly enhancing system safety, minimizing interference, and preserving critical signal integrity. Space-Saving Compact Design: Engineered for efficient integration within control cabinets, its optimized dimensions allow for high-density installations without sacrificing performance. Seamless SIMATIC S7-300 Compatibility: Guarantees effortless integration with your existing SIMATIC S7-300 PLC platform, simplifying installation and system expansion. Robust Industrial Durability: Constructed to withstand harsh industrial environments, ensuring long-term reliability and reducing maintenance needs. Enhanced Signal Integrity: Designed to provide clean and reliable signal reception, essential for accurate control and monitoring in critical applications. Technical Specifications Module Type: Digital Input Module Number of Inputs: 16 Input Voltage: 24V DC Isolation: Inputs isolated in groups of 16 Input Current from Backplane Bus (5V DC): Max. 10 mA Power Loss: Typically 3.5 W Mounting: Standard DIN rail mounting Dimensions: 25 mm x 40 mm x 117 mm (Width x Height x Depth) Weight: Approximately 210 g Applications Comprehensive Industrial Automation: Essential for accurately capturing digital signals from a wide array of sensors, switches, and other field devices across various industrial sectors. Precise Process Control: Ideal for monitoring and controlling discrete processes in manufacturing, assembly lines, and material handling systems, ensuring operational efficiency and product quality. Integrated Building Management: Facilitates the integration of diverse building management systems, enabling efficient operation, energy management, and enhanced security in smart buildings. Machine Control Systems: Provides reliable input for complex machine control applications, supporting automated machinery and robotics with crucial operational data. Energy Sector Monitoring: Applicable in monitoring systems within the energy sector, including power generation and distribution, for robust data acquisition. Why ChooseSiemens' reputation for industrial-grade quality ensures this module delivers consistent and dependable performance in the most demanding settings. Experience seamless integration and exceptional performance specifically tailored for your SIMATIC S7-300 PLC system, ensuring maximum compatibility and efficiency. The carefully engineered electrical isolation protects your system from electrical surges and noise, contributing to a safer and more stable operational environment. Investing in Siemens technology means choosing a solution that is built to last, providing long-term value and supporting future expansions and upgrades.Benefit from Siemens' extensive global support network and expertise.Order NowEnhance your industrial automation capabilities today. Contact Palm Parts Solution to inquire about the Siemens 6ES7321-1BH02-0AA0 SIMATIC S7-300 Digital Input Module and receive a tailored quote.FAQWhat is the primary function of the Siemens 6ES7321-1BH02-0AA0 module?This module primarily functions as a digital input interface for SIMATIC S7-300 PLCs, allowing for the precise acquisition of digital signals from various industrial field devices.How many inputs does this digital input module offer?The module offers 16 isolated digital inputs.What is the operating voltage for the inputs on this module?The inputs operate at a standard 24V DC.Is this module compatible with all SIMATIC S7-300 PLCs?Yes, it is designed for seamless compatibility and integration with existing SIMATIC S7-300 PLC systems.What are the benefits of the module's electrical isolation?The advanced electrical isolation, with inputs isolated in groups of 16, significantly enhances system safety, minimizes interference, and preserves the integrity of critical signals, leading to a more stable operational environment.

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PRODUCT DETAILS

Siemens 6ES7321-1BH02-0AA0 | SIMATIC S7-300 Digital Input Module

Overview

This is a genuine Siemens component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Siemens catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Siemens automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Siemens platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Module Type: Digital Input Module
  • Number of Inputs: 16
  • Input Voltage: 24V DC
  • Isolation: Inputs isolated in groups of 16
  • Input Current from Backplane Bus (5V DC): Max. 10 mA
  • Power Loss: Typically 3.5 W
  • Mounting: Standard DIN rail mounting
  • Dimensions: 25 mm x 40 mm x 117 mm (Width x Height x Depth)
  • Weight: Approximately 210 g

Applications

  • Comprehensive Industrial Automation: Essential for accurately capturing digital signals from a wide array of sensors, switches, and other field devices across various industrial sectors.
  • Precise Process Control: Ideal for monitoring and controlling discrete processes in manufacturing, assembly lines, and material handling systems, ensuring operational efficiency and product quality.
  • Integrated Building Management: Facilitates the integration of diverse building management systems, enabling efficient operation, energy management, and enhanced security in smart buildings.
  • Machine Control Systems: Provides reliable input for complex machine control applications, supporting automated machinery and robotics with crucial operational data.
  • Energy Sector Monitoring: Applicable in monitoring systems within the energy sector, including power generation and distribution, for robust data acquisition.

Why Choose the 6ES7321-1BH02-0AA0?

Siemens' reputation for industrial-grade quality ensures this module delivers consistent and dependable performance in the most demanding settings. Experience seamless integration and exceptional performance specifically tailored for your SIMATIC S7-300 PLC system, ensuring maximum compatibility and efficiency. The carefully engineered electrical isolation protects your system from electrical surges and noise, contributing to a safer and more stable operational environment. Investing in Siemens technology means choosing a solution that is built to last, providing long-term value and supporting future expansions and upgrades.

Benefit from Siemens' extensive global support network and expertise.

Availability & Shipping

  • In stock: 6ES7321-1BH02-0AA0 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 6ES7321-1BH02-0AA0 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Siemens

This module primarily functions as a digital input interface for SIMATIC S7-300 PLCs, allowing for the precise acquisition of digital signals from various industrial field devices.

Machine down? We ship parts the same day.

New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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