Product details
Product Overview
- Siemens 6ES7441-2AA03-0AE0 is a point-to-point communication module for the SIMATIC S7-400 system.
- Provides 2 configurable serial interfaces for flexible connectivity.
- Supports multiple physical interfaces: 20mA TTY, RS232, RS422/RS485.
- Includes built-in protocol drivers: 3964(R), ASCII, RK512, and printer.
Key Features at a Glance
- 2 independent communication channels
- Configure each channel for different interfaces and protocols.
- Use both channels simultaneously for different devices.
- Multiple physical interfaces supported
- 20mA TTY for long-distance transmission (up to 1000m).
- RS232C for short-range connections (up to 10m).
- RS422/RS485 for industrial networks (up to 1200m).
- Built-in protocol drivers
- 3964(R) for Siemens standard communication.
- ASCII for custom device communication.
- RK512 for remote data transfer.
- Printer driver for direct print output.
- Customer-specific reloadable drivers
- Upload custom protocols via STEP 7.
- Adapt to legacy or specialized devices easily.
Technical Specifications
- Brand & Model
- Brand: Siemens
- Model: 6ES7441-2AA03-0AE0
- Series: SIMATIC S7-400
- Type: CP 441-2 Communication Module
- Power Supply
- Backplane bus: 700mA at 5V DC (without interface module)
- Interface module consumption: 300mA at 5V, 45mA at 24V (20mA TTY)
- Memory Requirements (per interface)
- Parameters: 1 to 5KB
- Message texts: 0 to 55KB
- Loadable drivers: 0 to 64KB
- Interfaces
- Number: 2 channels (configurable)
- 20mA TTY: Yes (max 1000m)
- RS232C: Yes (max 10m)
- RS422/RS485: Yes (max 1200m)
- Transmission Rates
- 20mA TTY: 19.2 kbit/s
- RS232/RS422/RS485: 115.2 kbit/s
- Supported Protocols
- 3964(R): Yes
- ASCII: Yes
- RK512: Yes
- Printer: Yes (HP, IBM, user-defined)
- Customer-specific: Reloadable via STEP 7
- Communication Functions
- S7 extended communication: Yes
- Max connections: 8 overall
- Configuration
- Software: STEP 7 with parameter assignment forms
- Dimensions & Weight
- Width: 25mm | Height: 290mm | Depth: 210mm
- Weight: 720g (module) + 100g (interface module)
Expert Review – Field Engineer’s Perspective
- The 6ES7441-2AA03-0AE0 is the most flexible communication module for S7-400.
- Supports both legacy (20mA) and modern (RS485) interfaces.
- Load custom drivers without changing hardware.
- Two independent channels save rack space and cost.
- Recommended for printing systems, barcode readers, and legacy device integration.
- Connects to weigh scales, printers, and display panels.
- Handles custom ASCII protocols from older equipment.
Manager’s Insight – Selection Advice
- Choose 6ES7441-2AA03-0AE0 for mixed-device communication needs.
- One module handles RS232 printers and RS485 scanners.
- Reduces hardware variety in your spare parts inventory.
- For high-speed serial needs, use RS422/485 for best performance.
- For printer-only applications, consider 6ES7441-1AA00-0AE0 (single channel).
Compatible Systems & Applications
- Compatible PLCs
- Siemens SIMATIC S7-400 series CPUs (all models)
- Works with STEP 7 V5.x or higher
- Typical Applications
- Direct printer connections for production reporting
- Barcode scanner integration in logistics
- Weigh scale communication in batch processes
- Legacy device integration in factory upgrades
Installation & Wiring Guidelines
- Mounting
- Insert module into any S7-400 slot.
- Select appropriate interface module for your physical connection.
- Secure with locking mechanism.
- Wiring Tips
- 20mA TTY: use shielded cable up to 1000m.
- RS232: keep cable under 10m for reliable communication.
- RS422/485: use twisted-pair shielded cable up to 1200m.
- Configuration
- Set parameters in STEP 7 hardware config.
- Load customer-specific drivers from memory card.
- Test connection using diagnostic tools.
Package Contents
- 1x Siemens 6ES7441-2AA03-0AE0 communication module
- 1x configuration software CD
- 1x interface module (select type separately)
- 1x quick reference guide
Shipping & Warranty
- Warranty: 12 months against manufacturing defects
- Dispatch: Within 12-24 hours on business days
- Shipping: FedEx, UPS, or DHL
Comparison with Similar Models
- 6ES7441-2AA03-0AE0 vs 6ES7441-1AA00-0AE0
- 2AA03 has 2 channels, 1AA00 has 1 channel.
- 2AA03 supports reloadable drivers, 1AA00 does not.
- 2AA03 offers better flexibility for mixed applications.
- 6ES7441-2AA03-0AE0 vs 6ES7441-5AA02-0AE0
- 5AA02 is for PROFIBUS DP, not point-to-point.
- 2AA03 is for serial communication only.
- Choose 2AA03 for printer, scale, and legacy device connections.
Frequently Asked Questions
- Q: Can I use both interfaces with different protocols simultaneously?
- A: Yes, each channel works independently. Use RS232 for printer and RS485 for scanner at the same time.
- Q: What is the maximum distance for 20mA TTY connection?
- A: Use shielded cable up to 1000m. This makes it ideal for large factories and remote devices.
- Q: Do I need separate interface modules for each physical type?
- A: Yes, you must attach the correct interface module for your chosen physical connection (RS232, RS422, or 20mA).
- Q: Can I load custom protocol drivers into this module?
- A: Yes, you can reload customer-specific drivers via the memory card. This adapts to proprietary device protocols.
- Q: What printers does this module support?
- A: Supports HP-Deskjet, HP-Laserjet, IBM-Proprinter, and user-defined printers via the printer driver.
Buyer’s Selection Guide
- Choose 6ES7441-2AA03-0AE0 for 2-channel serial communication needs.
- For single-channel applications, select 6ES7441-1AA00-0AE0 to save cost.
- For PROFIBUS DP communication, use 6ES7441-5AA02-0AE0 instead.
- Always verify distance requirements before selecting physical interface type.
Contact & Support
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
- Technical support available 24/7
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