Encode Data

Instruction Parameters

Supported PLC Series

XPnA/1R	XPnB	XPnE	XPnF	CP3A/B/P/U CP4A~D/U	CPnE	CPnF	BP	PLC-S
✓	✓	✓	✓	✓	✓	✓	✓	✓

Supported Data Registers

	M	X	Y	K	L	F	T	C	S	Z	R	Q	D	@D	Constant
S	✓	✓	✓	✓	✓	✓	✓	✓	-	✓	-	✓	✓	✓	✓
D	✓	-	✓	✓	✓	-	✓	✓	-	✓	✓	✓	✓	✓	-
n	✓	✓	✓	✓	✓	✓	✓	✓	-	✓	✓	✓	✓	✓	✓

Supported Flags

Flag	Bit	Support
Error	F11.0	✓
Zero	F11.1	-
Carry	F11.2	-

Number of Steps

Steps
4

Operands

Operand	Description
S	The first operand. Entries are WORD data registers or constants. This is the value to be encoded. The signed value range is -32,768 ~ 32,767 (216). The unsigned value range is 0 ~ 65,535 (216-1). The Hexadecimal value range is H0000 ~ HFFFF.
D	The second operand. Entries are only WORD data registers. This is where the encoded data is saved.
n	The third operand. Entries are WORD data registers or constants. This is the exponent of 2n for the amount of bits to be encoded. The value range is 1 ~ 8.

Notice

Error Flag (F11.0) Notice

The error flag, F11.0, will be ON for one scan when the address of the data register assigned by @D exceeds the range of the data register, D. The range of the data register, D, is dependent on the CPU type.

F11.0 turns ON when the value of the data for n is not in range of 1 ~ 8.

Instruction Behavior

The ENCO and ENCOP instructions behave as follows:

• Up to 256 bits can be encoded.
  • This is equivalent to 16 WORDs.
  • The result of the encoding is an 8-bit integer.
• The location value of the most significant bit set (bit value is 1) is saved.

Examples

• Ladder Diagram