CDRead (FUN)¶

FUNCTION CDRead : DINT

Read from a character device file. Read() attempts to read up to count bytes from file handle hFile into the buffer starting at buf.

InOut:

Scope	Name	Type	Comment
Return	CDRead	DINT	Nr of Bytes copied.
Input	hFile	RTS_IEC_HANDLE	File descriptor/handle, that was previously created with Open()
	pbyBuffer	POINTER TO BYTE	Buffer to copy bytes into.
	udCount	UDINT	Nr of bytes to copy.
	pResult	POINTER TO DINT	Pointer to linux errno error code, 0 is ok