FB_FileLoad

FB_FileLoad 1:

The contents of a file can be read out with the function block FB_FileLoad. The file is opened implicitly in binary mode, the contents are read out and the file is then closed again.

	This function block is only suitable for logging in real-time to a limited extent. For good performance, we recommend using the TF3500 TwinCAT Analytics Logger product, which is subject to a charge.

Inputs

VAR_INPUT
    sNetId     : T_AmsNetId;
    sPathName  : T_MaxString;
    pReadBuff  : PVOID;
    cbReadLen  : UDINT;
    bExecute   : BOOL;
    tTimeout   : TIME := DEFAULT_ADS_TIMEOUT;
END_VAR

Name	Type	Description
sNetId	T_AmsNetId	String containing the AMS network ID of the target device to which the ADS command is addressed (type: T_AmsNetId).
sPathName	T_MaxString	Storage path and file name of the file to be opened. The path can only point to the local file system of the computer. Network paths cannot be specified here (type: T_MaxString)
pReadBuff	PVOID	Address of the buffer into which the data are to be read. The buffer can be a single variable, an array or a structure, whose address can be found with the ADR operator.
cbReadLen	UDINT	Number of bytes to be read.
bExecute	BOOL	The function block is activated by a rising edge at this input.
tTimeout	TIME	States the length of the timeout that may not be exceeded by execution of the internal ADS command.

Outputs

VAR_OUTPUT
    bBusy  : BOOL;
    bError : BOOL;
    nErrId : UDINT;
    cbRead : UDINT;    
END_VAR

Name	Type	Description
bBusy	BOOL	When the function block is activated, this output is set to TRUE and remains set until feedback is received. As long as bBusy is TRUE, no new command can be executed.
bError	BOOL	If an error occurs during command execution, this output is set, once the bBusy output has been reset.
nErrId	UDINT	Returns the ADS error code or the command-specific error code when the bError output is set.
cbRead	UDINT	Number of currently read bytes

Requirements

Development environment	Target platform	PLC libraries to be integrated (category group)
TwinCAT v3.1.4022.0	PC or CX (x86, x64, ARM)	Tc2_System (System) >= v3.4.22.0