Siemens 6ES7 441-2AA04-0AE0 Communications Processor

Siemens CP441-2 communications processor, part number 6ES7 441-2AA04-0AE0, is a plug-in module for the SIMATIC S7-400 PLC family that adds serial-network connectivity to the controller. It provides two independent serial interfaces to connect the S7-400 to industrial networks, enabling simultaneous communications with peripheral devices. The module supports data transfer speeds up to 115.2 kbit/s and includes integrated drivers for 3964(R), ASCII, RK512, with a loadable Modbus slave driver for Modbus RTU communications. Designed for S7-400 PLCs, CP 441-2 is commonly used to connect to devices via serial links such as RK512 and Modbus, effectively offloading serial communication tasks from the CPU and enabling reliable point-to-point or networked links.