Siemens 6ES7 340-1AH02-0AE0 SIMATIC S7 COMM PROCESSOR

Siemens CP340 Communications Processor (6ES7340-1AH02-0AE0) is a dedicated RS232C communications module for the SIMATIC S7-300 PLC family. It provides a serial interface (RS232-C, V.24) to connect the S7-300 controller with peripheral devices such as printers, scales, or external controllers, enabling data exchange over a standard serial link. The unit ships with a configuration package on CD to facilitate setup and parameterization. Key specs confirmed for this model include compatibility with the S7-300 series and an approximate power loss of 0.6 W during operation. The part number 6ES7340-1AH02-0AE0 identifies the CP340 communications processor configured for RS232-C communication. This module is commonly used in legacy automation environments where serial device integration is required within a SIMATIC S7-300 control system. CP340 is part of the older S7-300 CP module lineup, designed for serial connectivity to RS232-based devices in industrial settings.