
B–62073E–1/042. INTERFACE BETWEEN CNC AND PMC–NA OR NB
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Notes on the use of EGB automatic phase alignment
The timings at which EGB automatic phase alignment is used are shown below.
Acceleration/deceleration type
Spindle
speed
Workpiece
axis feedrate
Synchronization start command Synchronization cancel command
Acceleration Synchronous state
Deceleration
G81R1 command execution
Synchronous mode signal
Deceleration
Acceleration
G81R1 command execution
1 Specify G81R1 to start synchronization. The G81R1 command accelerates the tool along the workpiece
axis. Once the synchronization feedrate has been reached, the synchronous mode signal (F153.5) is
turned on and the G81R1 block ends.
2 To cancel synchronization, ensure that the tool has been retracted from the workpiece, then specify
G80R1.
3 The G80R1 command turns off the synchronous mode signal, after which deceleration is started immedi-
ately. Once the feedrate has fallen to 0, the G80R1 block ends.
NOTE The EGB mode confirm signals (F066.3, F070.3, ...) are turned on and off in the same way as
the synchronous mode signal.