10.4.8. B (BUFV)

This buffer can store binary data regardless of the data type with a total size of 64 Kbytes. The argument(index) starts with 0 (0-based).

When multitasking is used, each task will have an independent BUFV.

BUFV0 ~ BUFV65535

BUFV[0] ~ BUFV[65535]

When the binary at a specific position in the buffer is to be handled as the desired type, the type property can be used.

The type property types for use are as follows.

endian	Property	type
Big endian	S1	signed integer (1byte)
	S2	signed integer (2byte)
	S4	signed integer (4byte)
	U1	unsigned integer (1byte)
	U2	unsigned integer (2byte)
	U4	unsigned integer (4byte)
	F4	single prec. real (4byte)
	F8	double prec. real (8byte)
Little endian	s1	signed integer (1byte)
	s2	signed integer (2byte)
	s4	signed integer (4byte)
	u1	unsigned integer (1byte)
	u2	unsigned integer (2byte)
	u4	unsigned integer (4byte)
	f4	single prec. real (4byte)
	f8	double prec. real (8byte)

Example No.1 :

If the 4 bytes starting from the position of offset 24 in BUFV are to be interpreted as integer values in the little-endian format and then assigned to the g_iY variable, the assignment statement shown below must be executed.

g_iY = BUFV[24].s4

“.s4”. represents the type property. “s”r efers to the signed integer, and “4” refers to 4 bytes. Because “s” in in lowercase, it shall be interpreted as little-endian.

Example No. 2 :

If the operation result is to be saved in 8 bytes, starting from the position of offset 1500 in BUFV in the big-endian double precision real number format, the assignment statement shown below must be executed.

BUFV[1500].f8=(V5!+140.8)/2.5

10.4.8. B (BUFV)​

10.4.8. B (BUFV)