Fanuc Symbol CAPi T Operators Manual

BACK MACHINING FAPT
B–63304EN/02
2. SPECIFICATIONS
616
(1)Back machining start M code
This M code is used to start animated simulation for back machining.
Set the M code value in MTF1145. Animated simulation for back
machining is started when an M code having the set value is specified
in the NC program.
(2)MTF related to workpiece coordinate system setting G codes
1) MTF1xxx
Set the following parameters for workpiece coordinate system
selection G codes.
No. Format Initial Value Description
1252 Integer 54 Workpiece coordinate system selection G code
for the first spindle (for back machining)
1253 Integer 55 Workpiece coordinate system selection G code
for the second spindle (for back machining)
D If –1 is specified, the corresponding G code is not output.
D During the creation of NC data, whether G54 or G55 will be
output is determined from the spindle number (SN), defined
using the tool data screen for machining definition.
2) MTF2xxx (function tables)
Set the following function tables:
Coordinate system setting and tool selection T code output for turning
(for back machining)
2068=4402, 1101, 0001, 0303, 0004, 0002, 0103, 0004, 0000, 0000
G50 X Z Smax ; G0 Txx ;
Coordinate system setting and tool selection T code output for milling
(for back machining)
2069=4402, 1101, 0001, AA01,0004, 0002, 0103, 0004, 0000, 0000
G50 X Z C ; G0 Txx ;
These function tables are referenced during back machining. To
output a coordinate system selection G code, modify the setting as
required.
3) Function code
The following function code has been added:
Upper three
digits
Detailed
classification
Lowest
digit
Major
classification
Function
4 C 0 2 Outputs the G code specified with
MTF1252 or MTF1253. This G code is
not subject to modal control.
(Workpiece coordinate system selection
G code)
2.2.2
MTF

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