PNIO_READ

Parameter	Value
Library_File_Name	PROFINET_AC500_V13.lib
Firmware	V1.3.0
Type	Type_Function_Block_History
Group	Data

The Function Block PNIO_READ implements the acyclic PROFINET READ service. Using this function, the controller has read access to slot, sub slot and index-related data of PROFINET IO devices. PNIO_READ works outside the cyclic process data exchange.

Every time a FALSE->TRUE edge is applied to input EN, PNIO _READ reads the data at its inputs and sends a corresponding request message to the Communication Module. Further FALSE->TRUE edges at input EN are ignored until the processing of the active requests is finished. The completion of the request processing is indicated by DONE = TRUE.

• Input Description
• Output Description
• Function Call in ST