FB_GetTotalDiskSpace: Gets the Size of Memory Medium

Function Block Description

This function block retrieves the amount of free memory space of a memory medium (user disk, system disk, SD card) in bytes.

The size of a remote device cannot be accessed. If a remote device is specified as parameter, then the function returns "-1".

Library name: PLCSystemBase

Namespace: PLCSystemBase

To see the general representation in IL or ST language, refer to the chapter Function and Function Block Representation.

This table describes the input variables:

Input	Data type	Description
i_xEnable	BOOL	Activation entry, executes the operation when the value is `TRUE`.
i_sVolumeName	STRING[80]	Name of the device whose memory size must be accessed: System disk: `'/sys'` User disk: `'/usr'` SD Card: `'/sd0'`

This table describes the output variables:

Output	Data type	Description
q_xDone	BOOL	Set to `TRUE` when function block ended.
q_xBusy	BOOL	Set to `TRUE` when function block has been started and is still executing.
q_OperationResult	DINT	Result of the operation, a non zero value indicates an error.
q_uliDiskSpace	ULINT	Memory space in bytes.