FC_ReadOnlyDataRequest - General Information

Overview

Type:	Function
Available as of:	V1.0.2.0

Task

This function sends the request for the ReadOnlyData service to a Sercos device. This service is used to read a parameter (IDN).

Functional Description

This function sends the request for the ReadOnlyData service to a Sercos device. The Sercos device is specified by its IP address. The response to the request is obtained with the function FC_ReadOnlyDataResponse.

Interface

Input	Data type	Description
i_sIPAddress	STRING[15]	IP address of Sercos device
i_uiSlaveIndex	UDINT	Sercos slave index of the Sercos device (allows you to address Sercos devices A and B of a Lexium 62 Double Drive)
i_udiIDN	UDINT	Identification number (IDN) of the parameter to be read

Output	Data type	Description
q_udiTransactionID	UDINT	Returns the transaction ID to be used for receiving the response

Return Value

Data type	Description
ET_Result	Refer to ET_Result.