Product Overview
When precise point-to-point communication is critical in your S7-400 system, the Siemens 6ES7441-1AA04-0AE0 CP 441-1 communications module delivers reliable performance. This industrial automation module provides one variable interface supporting RS232C, RS422/485, and 20 mA (TTY) physics, making it a versatile solution for connecting printers, drives, and other serial devices. With a typical power loss of only 0.3 W and multiple protocol drivers, the Siemens 6ES7441-1AA04-0AE0 reduces energy costs and simplifies system integration.
Technical Specifications
The table below lists the key parameters of the Siemens 6ES7441-1AA04-0AE0 module as provided in the official documentation:
| Parameter |
Value |
| Supply voltage (DC) |
5 V DC and 24 V DC |
| Input current from backplane bus (5 V DC, max) |
600 mA (without interface module) |
| Power loss, typ. |
0.3 W |
| Memory requirements per interface |
1–5 KB for parameters; 0–55 KB for message texts |
| Number of interfaces |
1; variable |
| Interface physics supported |
20 mA (TTY), RS232C (V.24), RS422/485 (X.27) |
| Transmission rate, max. |
38.4 kbit/s |
| Supported protocols |
3964(R), ASCII, Printer |
| Cable lengths (shielded, max) |
20 mA TTY: 1000 m; RS232: 10 m; RS422/485: 1200 m |
| Dimensions (W x H x D) |
25 mm x 290 mm x 210 mm |
| Weight approx. |
800 g (interface module: 100 g) |
Industry Applications
The Siemens 6ES7441-1AA04-0AE0 excels in environments requiring dedicated point-to-point serial communication. Typical applications include:
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Printer integration in manufacturing: Connect HP LaserJet or IBM Proprinter units directly to an S7-400 CPU for barcode labels or production reports using the printer driver at up to 38.4 kbit/s (RS232/422) or 19.2 kbit/s (TTY).
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Legacy machine interface: Replace older communication modules with the CP 441-1 to maintain connectivity with TTY-based sensors or 3964(R) protocol devices, extending the life of existing equipment.
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Remote I/O communication: Use the RS422/485 interface for long-distance (up to 1200 m) links to remote I/O racks or variable frequency drives, reducing cabling costs and signal degradation.
Compatibility & Integration
The Siemens 6ES7441-1AA04-0AE0 is designed specifically for the SIMATIC S7-400 platform. It configures via STEP 7 using its own parameter assignment forms. The module supports a variety of integrated protocol drivers including 3964(R), ASCII, and printer protocols. It does not support RK512 or reloadable customer-specific drivers. The memory required in the S7-CPU memory card ranges from 1–5 KB for parameters and up to 55 KB for message texts, making it efficient for systems with limited memory.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6ES7441-1AA04-0AE0, verify that your S7-400 rack has a free slot and that your backplane bus can supply the required current (600 mA max from 5 V). Ensure the interface module (TTY, RS232, or RS422/485) is selected to match your existing peripherals. For genuine new stock and expert support, choose PLC Source PRO (available at ubest101.myshopify.com). We supply only authentic Siemens parts with full traceability.