Siemens 6ES7441-2AA04-0AE0 - Dual-Channel High-Speed Serial Communication Module

Supercharge your S7-400's connectivity with the Siemens 6ES7441-2AA04-0AE0 CP 441-2. This powerful communication processor features two independent serial channels, offering double the connectivity in a single module slot. It supports high-speed communication up to 115.2 kbit/s and a broader set of protocols, including RK512 and loadable custom drivers, making it perfect for complex systems requiring multiple serial links to printers, HMIs, drives, or legacy controllers.

Key Features & Benefits

• Dual Independent Channels: Connect to two different serial devices simultaneously, maximizing rack space and system capability.
• High-Speed Performance: Achieves data rates up to 115.2 kbit/s on RS232/RS422/485 interfaces for fast data exchange.
• Extended Protocol Support: Includes standard 3964(R), ASCII, and Printer drivers, plus the advanced RK512 protocol for Siemens-specific applications and support for loadable custom drivers.
• Maximum Flexibility: Each channel can be equipped with a different physical interface submodule (RS232, RS422/485, or 20mA TTY) to match varied device requirements.

Complete Technical Specifications

Brand & Series: Siemens SIMATIC S7-400

Full Model Number: 6ES7441-2AA04-0AE0 (Communication Processor CP 441-2)

Module Type: Serial Communication Module, 2 Channels

Physical Interfaces per Channel: Selectable via plug-in submodule: RS232C, RS422/485, 20mA TTY

Maximum Transmission Rate: 115.2 kbit/s (RS232/422/485), 19.2 kbit/s (20mA TTY)

Integrated Protocols: 3964(R), ASCII, RK512, Printer Driver (HP, IBM, User-defined)

Custom Drivers: Yes, loadable via CPU memory card for proprietary communication needs.

Maximum Cable Length: 10m (RS232), 1200m (RS422/485), 1000m (20mA TTY) - all shielded

Power Supply: From S7-400 backplane (5V DC, max 600 mA)

Power Loss: Typically low at 0.3 W

Memory Requirements on CPU: 1-5 KB for parameters, up to 55 KB for texts, up to 64 KB for loadable drivers.

Configuration: Via Siemens STEP 7 software (configuration package included on CD)

Dimensions (W x H x D): 25 mm x 290 mm x 210 mm

Weight: Approx. 720 g (Module) + 100 g per Interface submodule

Installation & Compatibility Guide

Install the main 6ES7441-2AA04-0AE0 module into your S7-400 rack. You will need to purchase two interface submodules (one for each channel) separately, such as RS232 (6ES7964-1AA04-0AA0), RS422/485 (6ES7964-1AB04-0AA0), or 20mA TTY (6ES7964-1AC04-0AA0). Configure each channel independently in STEP 7 for its specific protocol and device. Ideal for connecting a mix of devices like a label printer (RS232) and a motor drive (RS422).

Package Contents & Warranty

What's Included: 1 x Siemens CP 441-2 Communication Module (6ES7441-2AA04-0AE0) and Configuration Software on CD.

Important Note: The two physical interface submodules (RS232, RS422/485, or 20mA TTY) are required and sold separately.

Our Guarantee: This product is covered by a full 12-month warranty.

Fast Global Shipping

We ensure prompt delivery worldwide via FedEx, UPS, and DHL.

Frequently Asked Questions (FAQ)

What is the main difference between the CP 441-1 and CP 441-2?

The CP 441-2 has two communication channels versus one, supports a higher baud rate (115.2 vs 38.4 kbit/s), and includes additional protocols like RK512 and the ability to load custom drivers.

What is the RK512 protocol used for?

RK512 is a Siemens-specific data exchange protocol often used for communication between older Siemens PLCs (like S5 series) and S7-400 systems, or with certain Siemens drives and devices that require this standard.

Can I use both channels at the maximum 115.2 kbit/s speed?

The 115.2 kbit/s maximum is shared across both channels. In practice, you can run both at high speed, but the total throughput is managed by the module's internal resources.

What are "loadable drivers"?

This advanced feature allows you to load proprietary or less common communication protocols (provided by Siemens or a third party) onto the module from the CPU's memory card, enabling communication with specialized devices not covered by the standard drivers.

Do I need a separate power supply for the interface submodules?

No. The interface submodules receive their operating power directly from the main 6ES7441-2AA04-0AE0 module, which is powered from the S7-400 backplane.

© 2026 Ubest Automation Limited. All rights reserved.
Original Source: https://www.ubestplc.com/
Contact: sales@ubestplc.com Phone: +86 180 3000 5825