Siemens 6ES7323-1BH01-0AA0 SIMATIC S7-300 Digital I/O Module

6ES73231BH010AA0 – The SIMATIC SM 323 is a versatile digital I/O module designed for S7-300 automation systems, providing 8 isolated digital inputs and 8 digital outputs (24 V DC, 0.5 A each). With a total output current of 2 A and a single 20-pole front connector, it supports safe signal isolation, making it ideal for general-purpose control applications. This module is now in product phase-out status since 01.10.2023.

Technical Specifications

• Model: 6ES7323-1BH01-0AA0 Siemens
• Series: SIMATIC S7-300
• Module Type: SM 323 Digital I/O
• Digital Inputs: 8 DI @ 24 V DC (isolated)
• Digital Outputs: 8 DO @ 24 V DC / 0.5 A each
• Total Output Current: Max. 2 A
• Connection Type: 1 x 20-pole front connector (not included)
• Isolation: Yes – channel group isolation
• Net Weight: 0.241 kg
• Dimensions (H×W×D): 128 × 151 × 50 mm
• Country of Origin: Germany
• Lifecycle Status: Product phase-out since 01.10.2023

Function & Application

Purpose: The SM 323 digital module provides reliable I/O expansion for S7-300 PLCs, handling standard DC digital signals with built-in isolation for improved system safety and noise immunity. Suitable for a broad range of automation applications, including machine control, panel integration, and signal interfacing.

Typical Applications:

• General-purpose machine control
• Digital I/O expansion in S7-300 systems
• Light indicator or sensor input integration
• Electrically isolated signal switching
• Automation systems with group-isolated channels

Performance & Features

• 8 DI + 8 DO @ 24 V DC. Compact dual I/O module for balanced signal needs.
• 0.5 A Per Output Channel. Drives solenoids, relays, or indicators.
• 2 A Max Output Current. Suitable for moderate-load digital circuits.
• Isolated Channels. Enhances protection and prevents signal interference.
• Standard 20-Pole Connector. Easy installation with compatible front plugs.

6ES7323-1BH01-0AA0 Compliance & Classification

• RoHS Compliance: Since 31.03.2008
• WEEE Take-Back Obligation: Yes

REACH Substances:

• Lead (CAS 7439-92-1) > 0.1%
• Lead monoxide (CAS 1317-36-8) > 0.1%
• 2-methyl-1-(4-methylpentyl)cyclopentane-1,3-dione (CAS 71868-10-5) > 0.1%
• SCIP Number: e7f77f19-f1f2-4142-a0d9-5806b0f24e4c
• Commodity Code: 85389091
• Catalog ID: ST73
• Product Group: 2288
• Group Code: R151
• Product Class: A – Returnable stock item
• EAN: 4025515065289
• UPC: 662643173758

Key Features & Benefits:

✅ 8 DI + 8 DO in One Module. Efficient and cost-saving I/O solution.

✅ 0.5 A Output Channels. Suitable for industrial digital loads.

✅ Channel Isolation. Improves system stability and signal quality.

✅ S7-300 Compatibility. Designed for seamless integration.

✅ Phase-Out Support. Still available for spares and legacy installations.

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