Siemens 6ES7441-1AA04-0AE0: Versatile Serial Communication Module

Connect your S7-400 PLC to a world of serial devices. The Siemens 6ES7441-1AA04-0AE0 (CP 441-1) is a point-to-point communications processor. It provides one configurable channel for reliable data exchange with printers, barcode scanners, drives, and other control systems using standard serial protocols.

Detailed Technical Specifications

• Product Model: Siemens 6ES7441-1AA04-0AE0 (CP 441-1 Series).
• Interface Type: 1 configurable serial channel (RS232 / RS422 / RS485 / 20mA TTY).
• Protocol Support: Integrated 3964(R), ASCII, and Printer drivers (HP, IBM).
• Max Data Rate: Up to 38.4 kbit/s (19.2 kbit/s for 20mA TTY).
• Cable Length: Up to 10m (RS232), 1000m (20mA TTY), 1200m (RS422/485), all shielded.
• Power Consumption: Low typical loss of 0.3W; draws max 600mA from 5V backplane bus.
• CPU Memory Use: Requires 1-5 KB for parameters plus 0-55 KB for message texts on CPU memory card.
• Configuration: Fully configured using dedicated forms within Siemens STEP 7 engineering software.

Installation & Hardware Details

• Interface Modules: Physical connection is made via separate, pluggable interface submodules (sold separately).
• Module Dimensions: Standard S7-400 size: 25mm (W) x 290mm (H) x 210mm (D).
• Module Weight: Approximately 800g (module), plus 100g for an interface module.
• Power Supply: Powered via the S7-400 backplane (5V DC) and optionally uses 24V DC for 20mA TTY interface.

Packaging & Service Information

• Package includes the CP 441-1 communication module and the configuration software CD.
• This product is backed by a standard 12-month warranty for reliable performance.
• We ensure fast delivery to your location using trusted carriers like FedEx, UPS, and DHL.

Expert FAQs for Integration

• What is the main use case for the 3964(R) protocol?
  3964(R) is a robust, error-checking protocol used for reliable data block transfer between Siemens PLCs or to other compliant devices in industrial environments, ensuring data integrity.
• Can I connect a standard office printer to log data?
  Yes. Using the printer driver and an RS232 interface module, you can directly print messages or alarm logs on supported HP LaserJet or IBM Proprinter models.
• How do I choose between RS422 and RS485?
  RS422 is for point-to-point, while RS485 allows multi-drop networks. This module supports both on the same interface submodule, giving you wiring flexibility.
• What is the 20mA TTY interface typically used for?
  The 20mA current loop (TTY) is an old, very robust standard for long-distance communication in electrically noisy areas, often found with legacy teleprinters or some specialized instruments.
• Is special programming needed to use the ASCII driver?
  The module handles the byte transmission. You primarily use system function blocks (SFBs) in your PLC program to send and receive data strings, making it straightforward to talk to scales, scanners, or HMIs.

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