SIEMENS 6ES7441-1AA03-0AE0

Siemens CP 441-1 Communication Module for SIMATIC S7-400 Description The 6ES7441-1AA03-0AE0, also known as the CP 441-1, is a versatile communication processor designed for the Siemens SIMATIC S7-400 PLC series. It facilitates reliable point-to-point (PtP) serial communication, essential for connecting the PLC to a wide range of peripheral devices such as printers, scanners, and third-party systems. This module features one configurable interface that supports RS232, TTY, and RS422/485 protocols. Specifications Manufacturer: Siemens Product Line: SIMATIC S7-400 Product Type: Communication Processor CP 441-1 Part Number: 6ES7441-1AA03-0AE0 Number of Interfaces: 1 Supported Protocols: RS232C (V.24), TTY (20mA), RS422/RS485 Transmission Rate: Max. 115.2 kbit/s Label Info Hardware Version: 03 Firmware Version: V1.0.3 Application This module is ideal for data exchange in manufacturing, process control, and automation systems where robust serial communication is required. It is commonly used for logging data to a printer, reading from barcode scanners, or interfacing with custom serial devices. Country of Origin Made in Germany. CO2 Impact Opting for a refurbished communication module like this one prevents the emission of approximately 24 kg of CO2 compared to manufacturing a new one. This saving is equivalent to driving 120 km in a standard car. Availability This product is a legacy component in its ‘Phase-out’ lifecycle stage. Availability of new units is limited, making tested, pre-owned parts a critical resource for maintaining existing S7-400 systems. Order now from profideals for expert support and fast delivery. FAQ Question?What programming software is required to configure the CP 441-1 module?The CP 441-1 is configured using Siemens STEP 7 (V5.x or higher) software. You will need to install the appropriate hardware support package (HSP) to integrate the module into your TIA Portal project if you are using a modern engineering framework. Question?Can this module be used in a redundant S7-400H system?Yes, the CP 441-1 can be used in a high-availability S7-400H system. However, for redundant communication paths, it is typically recommended to use two separate CP modules, one in each central rack, configured appropriately in the hardware configuration. Question?What are the key differences between the RS422 and RS485 modes on this module?Both are differential signaling standards suitable for long distances. RS422 supports one driver and multiple receivers (multidrop), while RS485 supports multiple drivers and receivers on the same bus (multimaster), allowing for true multi-point networks. Your choice depends on whether you need a single master or multiple masters communicating on the line. Last Update: Friday, March 13, 2026 profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.