Overview
The 6ES7195-0EA20-0XA0 is a Siemens ASIC FOCSI IC S/ PLOM, a 40-pin integrated circuit designed for PROFIBUS fiber-optic (FO) communication. It weighs 489.87936 g and is RoHS-compliant since 08/15/2006.
Function & operation
This ASIC implements the PROFIBUS fiber-optic interface (FOCSI) on a single 40-pin package, converting electrical PROFIBUS signals to optical for transmission over fiber. It handles the physical layer and protocol timing for FO segments, enabling long-distance, noise-immune communication between Siemens PLC stations.
Applications
Used in Siemens SIMATIC S7 and other PROFIBUS DP systems where fiber-optic cabling is required — typically in high-EMI environments, across long distances (up to several kilometers), or between buildings. The ASIC sits on a carrier module or backplane within the PLC rack.