Fagor 8055 EN Programming Manual - Additional Preparatory

CNC 8055

CNC 8055i

·M· & ·EN· M

ODELS

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OFT

: V02.2

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7

·109·

ADDITIONAL PREPARATORY 

FUNCTIONS

7.1

Interruption of block preparation (G04)

The CNC reads up to 20 blocks ahead of the one it is executing, with the aim of calculating

beforehand the path to be followed.

Each block is evaluated (in its absence) at the time it is read, but if you wish to evaluate it at the

time of execution of the block you use function G04.

This function holds up the preparation of blocks and waits for the block in question to be executed

in order to start the preparation of blocks once more.

A case in point is the evaluation of the "status of block-skip inputs" which is defined in the block

header.

Example:

.

.

   G04

; Interrupts block preparation

/1 G01 X10 Y20

; block-skip condition "/1"

.

.

Function G04 is not modal, so it should be programmed whenever you wish to interrupt block

preparation.

It should be programmed on its own and in the block previous to the one in which the evaluation

in execution is required. Function G04 can be programmed as G4.

Every time G04 is programmed, active radius and length compensation are cancelled.

For this reason, care needs to be taken when using this function, because if it is introduced between

machining blocks which work with compensation, unwanted profiles may be produced.