Siemens 6ES7231-0HC22-0XA8 Analog Input Module

The Siemens 6ES7-231-0HC22-0XA8 EM 231 module offers 4 channels of 0–10 V DC analog input with 12-bit precision, exclusively for the S7-22X CPU series. Though now discontinued, it remains available as a spare part for maintaining legacy S7-200 CN installations.

Technical Specifications

• Model: 6ES7231-0HC22-0XA8 Siemens
• Series: SIMATIC S7-200 CN
• Module Type: EM 231 Analog Input Module
• Number of Inputs: 4 AI
• Input Signal Range: 0–10 V DC
• Resolution: 12 Bit
• Compatible CPUs: Only for S7-22X CPUs
• Approval: CE (China version only)
• Lifecycle Status: Product cancelled since 01.10.2021
• Replacement: Not specified

Function & Application

Purpose:
Analog input module designed exclusively for use with SIMATIC S7-200 CN S7-22X series CPUs, providing precise voltage signal acquisition.

Typical Applications:

• Analog signal measurement in compact control systems
• Data acquisition for voltage-based sensors
• Use in localized or cost-sensitive industrial control setups in CE-compliant regions

Delivery & Compliance

• Packaging Dimensions: 8.60 × 9.90 × 7.30 cm
• Net Weight: 0.174 kg
• Packaging Quantity: 1 Piece
• Country of Origin: China
• Estimated Dispatch Time: 10 Working Days

Product Compliance & Classification

• RoHS Compliance: Since 31.03.2008
• WEEE Take-Back Obligation: Yes
• SCIP Number: Not available

REACH Substances:

• Lead (CAS 7439-92-1) > 0.1%
• Lead monoxide (CAS 1317-36-8) > 0.1%
• 6,6′-Di-tert-butyl-2,2′-methylenedi-p-cresol > 0.1%
• Commodity Code: 85389091
• Catalog ID: ST72-CN
• Product Group: 4557
• Group Code: R131
• Product Class: A – Stock item, returnable
• EAN: 4025515073444

Key Features & Benefits

✅ 4 Analog Inputs. Suitable for voltage-based signal sources (0–10 V DC).

✅ 12-Bit Resolution. Enables accurate signal representation.

✅ S7-22X CPU Compatibility. Designed for China-market S7-200 controllers.

✅ CE Approved. Certified for specific regions; not for global export.

✅ Spare Part Availability. For maintaining and servicing existing S7-200 CN systems.

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