FC_SyncReadSlaveUserData - General Information

Overview

Type:	Function
Available as of:	SystemInterface_1.32.6.0
Versions:	Current version

Task

Writing the parameters SlaveUserData[0] ... [3] consistently.

Description

In the case of the encoder network (controller synchronization), application-specific data are transferred cyclically from the synchronization slave to the synchronization master. This function allows a consistent data record to be read from the parameters SlaveUserData[0] ... [3] of the synchronization master (synchronized module). As a call-up parameter, it only contains a pointer to a data range (i_dwUserData) and its size (i_uiSizeOfUserData, maximum 16 bytes). This allows the content of the parameter to be displayed on a UDINT32-ARRAY or on a STRUCT.

Interface

Input	Data type	Description
i_diSyncModuleId	DINT	Logical address of the synchronized module
i_dwUserData	DWORD	Pointer to a data structure to which the data is to be copied
i_uiSizeOfUserData	UINT	Number of bytes to be copied to this data structure This value may not exceed 16.

Input

Data type

Description

i_diSyncModuleId

DINT

Logical address of the synchronized module

i_dwUserData

DWORD

Pointer to a data structure to which the data is to be copied

i_uiSizeOfUserData

UINT

Number of bytes to be copied to this data structure

This value may not exceed 16.

Return Value

Data type	Description
DINT	0: Data record could be read. -1: An error is detected.