Programming manual
CNC 8070
CNC VARIABLES
Feedrate related
14.
(SOFT V02.0X)
389
14.14 Feedrate related
These variables are synchronous read/write (R/W).
They have generic names.
• Replace the "n" character with the channel number, maintaining the brackets. The first
channel is identified with the number 1, "0" is not a valid number.
The (V.)G.FREAL variable takes into account the accelerations and decelerations of the
machine. When the axes are stopped, it returns a value of "0" and when moving it returns the
value corresponding to the feedrate type G94/G95. On laser cutting machines, it is
recommended to use this variable so the laser power is proportional to the feedrate.
The feedrate in G94 (mm/min) or G95 (mm/rev) may be set by program or by PLC; the one set
by PLC has the highest priority. When selecting a new feedrate in MDI mode, the CNC updates
the following variables:
• (V.)G.FEED and (V.)G.PRGF with G94 active.
• (V.)G.FPREV and (V.)G.PRGFPR with G95 active.
(V.)[n].A.FRO.Xn Valid for rotary and linear axes. Also for the independent axes.
The Feedrate override % may be set by program, by PLC or with the selector switch; the one set by
program has the highest priority and the one selected with the switch the lowest.
FEEDRATES
PRG PLC INT Exec
(V.)[n].G.FREAL
Real CNC feedrate R R R Yes
(V.)[n].G.FEED
Active feedrate in G94 R R R Yes
(V.)[n].PLC.F
Feedrate by PLC in G94 R R/W R Yes
(V.)[n].G.PRGF
Feedrate by program in G94 R R R No
(V.)[n].G.FPREV
Active feedrate in G95 R R R Yes
(V.)[n].PLC.FPR
Feedrate by PLC in G95 R R/W R Yes
(V.)[n].G.PRGFPR
Feedrate by program in G95 R R R No
MACHINING TIME PRG PLC INT Exec
(V.)G.FTIME
Machining time in G93 R R R No
The machining time is given in seconds.
FEED-RATE OVERRIDE
PRG PLC INT Exec
(V.)[n].G.FRO
% F active at the CNC R R R Yes
(V.)[n].A.FRO.Xn
% F active by axis R/W R/W R/W Yes
(V.)[n].G.PRGFRO
% F by program R/W R R No
(V.)[n].PLC.FRO
% F by PLC R R/W R Yes
(V.)[n].G.CNCFRO
% F at the selector switch R R R/W Yes
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