14. Coordinates System Setting Functions
14.10 Workpiece Coordinate System Setting and Offset
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(7) A new workpiece coordinate system 1 is set by issuing the G92 command in the G54
(workpiece coordinate system 1) mode. At the same time, the other workpiece coordinate
systems 2 through 6 (G55 to G59) will move in parallel and new workpiece coordinate systems
2 through 6 will be set.
(8) An imaginary machine coordinate system is formed at the position which deviates from the
new workpiece reference (zero) position by an amount equivalent to the workpiece coordinate
system offset amount.
Old workpiece 1 (G54) coordinate system
Old workpiece 2 (G55) coordinate system
New workpiece 1 (G54) coordinate system
New workpiece 2 (G55) coordinate system
Reference (zero) position return
position
Basic machine coordinate
system zero point
Imaginary machine coordinate system
coordinate point based on G92
R#1
-X
-X(G54)
-X
-X(G54')
-X(G55)
-X(G55')
-Y(G54)
-Y
-Y(G55)
-Y
-Y(G54')
-Y(G55')
W2
W1
[W2]
[W1]
M
[M]
After the power has been switched on, the imaginary machine coordinate system is matched with the
basic machine coordinate system by the first automatic (G28) or manual reference (zero) position return.
(9) By setting the imaginary basic machine coordinate system, the new workpiece
coordinate
system will be set at a position which deviates from that imaginary basic machine coordinate
system by an amount equivalent to the workpiece
coordinate system offset amount.
(10) When the first automatic (G28) or manual reference (zero) position return is completed after
the power has been switched on, the basic machine coordinate system and workpiece
coordinate systems are set automatically in accordance with the parameter setting.
(11) If G54X-Y-; is commanded after the reference position return (both automatic or manual)
executed after the power is turned ON, the program error (P62) will occur. (A speed command
is required as the movement will be controlled with the G01 speed.)
(12) Do not command a G code for which a P code is used in the same block as G54.1. The P code
will be used in the prioritized G command.
(13) When number of workpiece offset sets additional specifications is not added, the program
error (P39) will occur when the G54.1 command is executed.
This error will also occur when one of P49 to P96 is commanded although the specifications
allow up to the 48 sets.
(14) When number of workpiece offset sets additional specifications is not added, the program
error (P172) will occur when the G10 L20 command is executed.
(15) The local coordinate system cannot be used during G54.1 modal. The program error (P438)
will occur when the G52 command is executed during G54.1 modal.