Siemens 6ES7 341-1AH01-0AE0 Communication Processor

Siemens 6ES7 341-1AH01-0AE0 Communication Processor is a CP341 communications module designed for the SIMATIC S7-300 PLC family, delivering an RS232C serial interface that enables the S7-300 to exchange data with external devices over a dedicated serial link. Installed as a CP341 module in the S7-300 rack, it provides a standalone serial communications path that can be used to talk to PCs, hosts, and other equipment; Siemens lists this variant as the RS232C version in the CP341 lineup. For integration with external protocols, optional loadable drivers such as Modbus ASCII Master/Slave are available for CP341, expanding the range of serial devices reachable from the PLC. Typical applications include legacy device integration, data collection from serial instruments, and simple machine-to-host communication where a RS232 connection is required to interface non-S7 devices with a Siemens controller. The 1AH01-0AE0 suffix identifies this particular RS232C variant within the CP341 family, aligning with Siemens’ broader CP341 communications processor ecosystem used to extend S7-300 capabilities.