Siemens CP 342-5 PROFIBUS DP Processor for S7-300 PLC

Product Description

The Siemens CP 342-5 (6GK7342-5DA03-0XE0) is a PROFIBUS DP communication processor engineered for SIMATIC S7-300 PLC systems. Designed as a spare and replacement module for installed bases, it adds a dedicated PROFIBUS interface to the controller, enabling deterministic communication with distributed I/O, drives, operator panels, and peer controllers.

Supporting both DP master and DP slave roles, this processor is suitable for a wide range of legacy automation architectures. It maintains compatibility with S5-style communication as well as PG/OP and S7 services, making it practical for modernization projects that must preserve existing PROFIBUS networks.

The module installs directly into the S7-300 rack and draws its operating power from the backplane bus, eliminating external wiring. Integrated status LEDs provide clear diagnostics for bus state and module health, supporting stable long-term operation in industrial environments.

Application Scope and System Integration

The CP 342-5 (6GK7342-5DA03-0XE0) is typically used in factory automation, process control, and infrastructure systems where PROFIBUS DP remains a validated and standardized fieldbus. It is particularly relevant for maintenance, spares management, and lifecycle support of S7-300 installations following product discontinuation.

Technical Specifications