Index Register Operation Instruction - Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual

Instructions, standard functions/function blocks

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Index Register Operation Instruction

Saving all data of the index register

These instructions save the contents of index registers and long index registers in the devices specified by (d) and later.

Ladder diagram

Setting data

■Descriptions, ranges, and data types

Head device number for saving the data of index registers and

long index registers

Execution condition

Execution result

■Applicable devices

X, Y, M, L, SM,

Processing details

• These instructions save the contents of index registers and long index registers in the devices specified by (d) and later.

• When the contents of index registers are saved, "1" is added to (d).

• These instructions save the contents of index registers and long index registers for 24 words regardless of the assignment

of the number of the registers. Thus, when the number of index registers is 0, the contents of long index registers are saved

for 12 points.

• The ZPOP(P) instructions are used to return the data. The ZPUSH(P) and ZPOP(P) instructions are used in pairs, and by

using the same device in (d) a nesting structure can be adopted. (Page 548 Returning all data of the index register)

• When a nesting structure is adopted, the areas to be used are added to (d) and later every time the ZPUSH(P) instructions

are used. Check the number of index registers and long index registers by SD300 and SD302, and secure the areas for the

number of instructions to be used in advance.

8 APPLICATION INSTRUCTION

8.11 Index Register Operation Instruction

T, ST, C, D, W,

Structured text

ENO:=ZPUSH(EN,d);

ENO:=ZPUSHP(EN,d);

16-bit signed binary

Double word Indirect

specification

Data type (label)

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