Programming manual
CNC 8055
CNC 8055i
ADDITIONAL PREPARATORY FUNCTIONS
7.
·M· & ·EN· MODELS
SOFT: V02.2X
·117·
Look-ahead (G51)
To prevent motionless blocks from causing a square-corner effect, change bit 0 of general machine
parameter MANTFCON (P189).
Function properties:
Function G51 is modal and incompatible with G05, G07 and G50. Should any of them be
programmed, function G51 will be canceled and the new one will be selected.
Function G51 must be programmed alone in a block and there must be no more information in that
block.
On power-up, after executing an M02, M30, of after an EMERGENCY or RESET, the CNC will cancel
G51, if it was active, and it will assume G05 or G07 according to the setting of general machine
parameter "ICORNER".
On the other hand, the CNC will issue Error 7 (Incompatible G functions) when programming any
of the following functions while G51 is active:
G33 Electronic threading (G33)
G34 Variable-pitch threading.
G52 Move to hardstop.
G95 Feedrate per revolution.
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