PROFINET Function Block Library

The Function Block library PROFINET_AC500_V13.lib contains different function blocks to get IO controller and connected IO devices information about the status of communication and error states. These function blocks can be embedded additionally, especially for the initial operation.

A detailed Function Block description can be found in the PROFINET Library.

PROFINET Status and Diagnosis via Function Blocks

The status messages of the PROFINET bus are requested by the Function Blocks PNIO_STATE and PNIO_SYS_DIAG, which give following information:

Function Block Name	Function
PNIO_STATE: PNIO_STATE	Common information about the PROFINET bus state
PNIO_SYS_DIAG: PNIO_SYS_DIAG	Detailed information about the PROFINET bus state

PROFINET IO Device Error Diagnosis via Function Blocks

Error and status messages describing I/O devices are queried by PNIO_DEV_ALARM.

Function Block Name	Function
PNIO_DEV_ALARM: PNIO_DEV_ALARM	Representation of diagnosis messages from connected IO devices