
B-63942EN/02 NC FUNCTION 3.INTERPOLATION FUNCTION
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3.29.4 Torque Limit Skip
When the movement command following G31 P99 (or G31 P98) is
executed with the servo motor torque limit overridden, cutting feed
similar to linear interpolation (G01) can be performed. When the
servo motor torque reaches the torque limit (overridden servo motor
torque limit) by pushing or the skip signal (including the high-speed
skip signal) is input during the movement, the remaining movement
commands are canceled and then the next block is executed. (The
operation that executes the next block by canceling the remaining
movement command is called skip operation later.)
The servo motor torque limit can be overridden by:
(1) Executing the torque limit override command for the PMC
window.
(2) Executing the address Q command in the same block in which
G31 P99 (or G31 P98) exists.
Format
G31 P98 Q_ α_ F_ ;
G31 P99 Q_ α_ F_ ;
G31 : Skip command (One–shot G code)
P98 : Skip operation is performed only when the servo
motor torque reaches the limit
P99 : Skip operation is performed when the servo motor
torque reaches the limit or the skip signal is input.
Q : Torque limit override value
Specifiable value range: 1 to 99 (%)
The Q command is omissible. When omitting the Q
command, specify a torque limit in the PMC window
beforehand. If a torque limit override value is not set
in advance when the R command is omitted, an
alarm is issued. An alarm is issued also when a
value beyond the specifiable value range is specified.
A specified override value is valid only in the block
that specifies the override value. At the end of skip
operation, the override value returns to the value
applied immediately before the specification of G31.
α : Address of an arbitrary axis
F : Feedrate