FANUC Series 16/18/160/180-Model C Machining Center Operators Manual

PROGRAMMING
B–62764EN/01
21. AXIS CONTROL FUNCTIONS
479
The retreat and retry functions incorporate those functions that are needed
to enable retreat and retry operations with a PMC and custom macros.
Even if machining is interrupted by a reset or emergency stop, the tool can
be returned from the interruption point (machining retreat function) to
restart machining from the start block of the interrupted machining
(machining retry function) easily.
The retreat and retry functions consist of the functions below.
(1)Management of machining cycles by means of sequence numbers
Machining cycle management is performed using the following
sequence numbers:
N7000 to N7998: Machining start point
N7999: Clearing of data to perform machining return or
retry operation
(Until N7999 is specified, data is not cleared to
perform machining return or restart operation.)
N8000 to N8999: Machining cycle start point
N9000 to N9999: Machining cycle end point
(2)Saving of position information and modal information to custom
macro variables at a machining start point and machining cycle start
point
(3)Rigid tapping return function
(4)Restarting of machining at a machining start point or machining cycle
start point
Create a machining program in the format described below.
O0001 ;
(For an ordinary machining cycle)
N7000········ (1) Machining start point
···········
N8000········ (2) Machining cycle
N9000········ (3)
N8010········ Machining cycle
N9010········
···········
N7999········ (4) Clears machining data
N7100
(For a drilling canned cycle)
N7010······· · Machining start point
N8010········ Machining cycle
N8020········ Machining cycle
···········
N7020········ Machining start point
···········
M30
21.8
RETREAT AND
RETRY FUNCTIONS
Format

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