Siemens 6ES5755-2CA11 SIMATIC S5 Bus Terminating Resistor

Termination Solution for ET 200C Distributed I/O Systems

The Siemens 6ES5755-2CA11 bus terminating resistor ensures proper signal termination for the ET 200C distributed I/O system. This accessory package includes two terminating resistors, each offering IP65 protection against dust and water jets . The resistors prevent signal reflections that can disrupt communication across the bus line. Its robust design suits demanding industrial environments where reliability matters most.

This termination solution maintains signal integrity by providing proper electrical termination at both ends of the bus. Each resistor features a rugged housing that withstands harsh conditions, including moisture and particulate exposure . The package contains two units, which covers the requirements for a complete bus segment. Installation requires placing one resistor at each end of the ET 200C bus line. This simple configuration eliminates communication errors caused by signal reflections.

Technical Specifications

The Siemens 6ES5755-2CA11 belongs to the legacy SIMATIC S5 series, which Siemens no longer actively supports . Users should verify availability through specialized suppliers of obsolete automation components. Proper bus termination remains critical for reliable PROFIBUS communication in ET 200C installations. The IP65 rating allows installation in areas requiring washdown capabilities or outdoor exposure. This termination solution offers a straightforward way to maintain network performance in legacy systems. Engineers working with S5-based installations should consider this accessory for maintenance and repair needs. Availability may become limited as S5 components reach end-of-life status. Users seeking alternatives should evaluate newer termination solutions compatible with current Siemens automation platforms.