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Siemens 6ES7340-1CH02-0AE0 Communication Processor CP 340

£569.94

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  • RS422/485 Communication : Long-distance and noise-resistant serial link.
  • Configuration CD Included : Easy integration with included setup tools.
  • Perfect for Legacy Systems : Supports point-to-point device interfacing.
  • Modular with S7-300 Racks : Easy to add, remove, and configure.
  • Supported by Siemens Accessories : Pre-made cables available for plug-and-play use.
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SKU: 6ES7340-1CH02-0AE0 Category: Tag: Brand:
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Siemens 6ES7340-1CH02-0AE0 Communication Processor CP 340

6ES73401CH020AE0 – Modular communication processor for SIMATIC S7-300 systems. The CP 340 provides point-to-point serial communication via RS422/RS485 interface, and includes a configuration package on CD for easy integration and parameter setup.


Technical Specifications

  • Model: 6ES7340-1CH02-0AE0 Siemens
  • Series: SIMATIC S7-300
  • Module Type: CP 340 Communications Processor
  • Interface: RS422 / RS485
  • Configuration Software: Included on CD
  • Communication Type: Point-to-point serial
  • Mounting Type: Rail-mounted
  • Net Weight: 0.357 kg
  • Dimensions (W×H×D): 13.1 × 15.2 × 5.0 cm
  • Lifecycle Status: Product phase-out since 01.10.2023
  • Country of Origin: Germany

Function & Application

Purpose: The CP 340 enables serial communication between the S7-300 controller and external devices using RS422 or RS485 standards.

With flexible configuration via the supplied CD, it supports integration of barcode readers, weighing systems, printers, and other serial devices.

Typical Applications:

  • Connecting external RS422/RS485 serial equipment
  • Data exchange between PLC and operator interfaces
  • Integration of legacy systems using point-to-point protocols
  • Machine-level interfacing with scanners, sensors, and controllers

Performance & Features

  • RS422 / RS485 Interface : Reliable serial data transmission for long-distance or noise-prone environments.
  • Flexible Communication : Ideal for custom or vendor-specific protocols.
  • Modular Integration : Seamless addition to S7-300 PLC racks.
  • Included Config Package : Simplifies module setup and communication management.
  • Wide Accessory Range : Compatible with Siemens RS422 cables up to 50 meters.

6ES7340-1CH02-0AE0 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%
  • SCIP Number: 8a3fe00a-f0f1-4b41-b97e-27eba206dbd7
  • Commodity Code: 85176200
  • Catalog ID: ST73
  • Product Group: 2289
  • Group Code: R151
  • Product Class: A – Returnable stock item
  • EAN: 4025515072560
  • UPC: 040892562330

Key Features & Benefits:

RS422/485 Communication : Long-distance and noise-resistant serial link.

Configuration CD Included : Easy integration with included setup tools.

Perfect for Legacy Systems : Supports point-to-point device interfacing.

Modular with S7-300 Racks : Easy to add, remove, and configure.

Supported by Siemens Accessories : Pre-made cables available for plug-and-play use.


📦 Order Today While Stocks Last – Final Availability

At Drive Outlet Megastore, we offer the most competitive Siemens 6ES7340-1CH02-0AE0 prices, available while supplies last.

Looking to replace the CP 340 or plan migration to a new communication architecture with S7-1500?

Contact our communication experts today.

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Weight 3 kg

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Siemens is a global leader in industrial automation, drive technology, and electrical control systems. Siemens products are known for exceptional reliability, advanced engineering, and seamless integration across automation and motor control applications.


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Siemens products are commonly used in manufacturing, conveyor systems, robotics, packaging machinery, and industrial production lines. Their advanced control capabilities, robust construction, and long service life make them a trusted choice for industrial automation worldwide.


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