What is PROFIBUS PA?
PROFIBUS-PA is a ‘profile’ of PROFIBUS designed specifically for use in process automation for connecting control systems with field instruments. PROFIBUS-PA is based on PROFIBUS-DP and, using a linking device called a segment coupler, permits transparent communication between general purpose automation and process automation networks, making PROFIBUS ideal for hybrid applications where factory and process devices intermingle. The PROFIBUS PA profile defines the behavior of the field devices and ensures full interoperability and interchangeability between different manufacturers. PROFIBUS PA operates either with Intrinsically Safe transmission technology (acc. to IEC 61158-2) or standard transmission technology (acc. to RS485).
Related Questions
- I read in the PROFIBUS PA specs that the max length of EACH spur is 30/60/120 m, but in PROFIBUS DP we have defined the spur length parameter as TOTAL spur length. Can you explain?
- Does anyone have any insight into programming a simple subset of the Profibus DP or PA protocol?
- How is Profibus PA different from Foundation Fieldbus?
