Advantages provided by distributed field automation with application of the PROFIBUS PA profile included low hardware overhead, cost-effective engineering, increased operational safety and problem-free maintenance. These advantages are underlined by the following features:
Modularity and uniformity from the sensor up to the control level permit new plant concepts
Implementation of intrinsically-safe applications through use of the fieldbus in hazardous areas
Redundant PROFIBUS PA architectures (ring and line topologies with coupler redundancy) support Flexible Modular Redundancy (FMR) from the automation system (controller) down to a PA field device
Safety-related and fault-tolerant applications with low device and cabling requirements
Reduced configuration costs through simple, central engineering of the field devices (PROFIBUS PA and HART with SIMATIC PDM, also cross-vendor)
Simple installation using two wire cable for common power supply and data transmission
Reduced commissioning costs through simplified loop check
Low servicing costs thanks to simple wiring and comprehensive diagnostics facilities
