
9.
SPINDLE SPEED FUNCTION
9.1
Spindle Speed Command
9. SPINDLE SPEED FUNCTION
9.1
Spindle Speed Command
By specifying a numerical value following address S, a code signal of binary and a
strobe signal is output. This is mainly used to control the spindle speed.
An S code can be commanded in a block. Refer to the machine tool builder’s manual
for the number of digits commandable with address S and the correspondence
between the S codes and machine operations.
When a move command and an S code are specified in the same block, the
commands are executed in one of the following two ways:
(i)
Simultaneous execution of the move command and S function commands
(ii) Executing S function commands upon completion of move command execution.
The selection of either sequence depends on the machine tool builder’s
specifications.
In certain cases, these sequences may be provided together in
an NC machine. Refer to the manual issued by the machine tool builder for
details.
9.1 .I
S 4-digit code
The spindle speed is directly controlled by address S followed by a 4 digit number.
The unit of spindle speed may differ depending on machine tool builder.
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