PROFIBUS PA Field Device Protocol Software

Portable PROFIBUS PA Protocol Software for Field Devices

Softing’s PROFIBUS PA field device protocol software is optimized with respect to size, performance, and portability to support customer-specific hardware platforms. It is especially targeted to 16 Bit low-power microcontrollers and includes the complete range of protocol features for implementing conformant PROFIBUS PA field devices.


Fast adaptation to customer-specific hardware platforms

  • Complete solution, software-based
  • Especially designed for use in typical process automation field devices
  • Implementation optimized for usage in low-power microcontrollers typically found in hazardous areas
  • Suitable for many field device environments with a wide range in terms of microcontrollers, memory expansion and operating systems
  • Adaptable to device-specific requirements
  • Designed for use in customer-specific target platforms

Full range of functionality

  • Implementation according to the PROFIBUS specification
  • Including Function Blocks of the PROFIBUS PA profile from the PROFIBUS specification
  • Modular design for individual selection of the functionality supported in the respective field device

Support for general fieldbus ASICs

  • Implementation support not only for the PROFIBUS ASICs SPC4-2, but also for other fieldbus ASICs such as the UFC100-L1 from Softing
  • Possible parallel implementation of PROFIBUS PA and Foundation Fieldbus H1 field devices on identical hardware platform
  • Reduced implementation effort for second field device protocol when using the PROFIBUS PA and Foundation Fieldbus H1 field device protocol software from Softing in parallel

Technical Data

PROFIBUS PA Field Devices Software    
Minimum Hardware Requirements CPU Class 32 Bit, e.g. ARM Cortex-M, Renesas RX, ...
  CPU Clock 4 MHz
  (Flash-) ROM > 256 KB
  RAM > 64 KB
  Non-Volatile Memory 4 KB, e.g. as EEPROM / FRAM
Fieldbus Interface Number of Channels 1
  Transfer Rate 31.25 Kbit/s
  Fieldbus Controller Softing UFC100, (Siemens SPC4-2) (TI DAC8740)
Licensing Per-unit license Per-unit license fee for use of the PROFIBUS PA field device stack in individual field devices.
Protected by Security EEPROM. One-year maintenance contract recommended
Options Available Function Blocks Analog Input (AI), Analog Output (AO), Discrete Input (DI), Discrete Output (DO), Totalizer (TOT)

Order Information

Scope of Delivery  
Hardware Security EEPROM
Documentation Application Programming Interface (API) manual
Order Numbers  
LRA-KK-021513 PROFIBUS PA Device Stack License
Additional Products and Services  
FFPA-MAINTAIN-FD Maintenance Contract for PROFIBUS PA Field Device Software
IFA-KK-020503 Unified Fieldbus Controller UFC-100-L2
SPA-LL-020802 Certification service PROFIBUS PA Physical Layer test
SPA-LL-020805 Pre-certification service PROFIBUS PA test
EVA-MK-022210 commModule MBP Evaluation Kit
TSA-KK-023001 Introductory Training “PROFIBUS PA”
This training is not offered as a standard training course, but tailored to individual customer requirements.
It is usually held as part of a workshop related to with an integration project.



Softing Inc.