DPV1_MSAC1_READ

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Parameter Value
Library_File_Name PROFIBUS_AC500_V25.lib
Firmware V2.5
Type Type_Function_Block_History
Group Data

The Function Block DPV1_MSAC1_READ implements the acyclic PROFIBUS DP DPV1 service MSAC1_READ. Using this function, the master has read access to slot and index-related data of slaves supporting DPV1. DPV1_MSAC1_READ works outside the cyclic process data exchange.

Every time a FALSE → TRUE edge is applied to input EN, DPV1_MSAC1_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.