Read Table Data (First)

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
DEV	✓	✓	✓	✓	✓	✓	✓	✓	-	✓	✓	✓	✓	✓	✓
TBL	-	-	-	-	-	-	-	-	-	✓	✓	✓	✓	✓	-

Supported Flags

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

Number of Steps

Steps
3

Operands

Operand	Description
DEV	The first operand. Entries are WORD data registers or constants. This is the storage location for the first value read.
TBL	The second operand. Entries are only WORD data registers. This is the starting address for the table.

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 data table exceeds the range of the corresponding data register.

Instruction Behavior

The FIFR and FIFRP instructions behave as follows:

• The oldest value, or first value, in TBL + 1 is read.
  • The table will remove this value and decrease the overall amount by 1.
• The first value of TBL is an integer number representing the amount of data saved in TBL.

Examples

• Ladder Diagram