Wuhan Huazhong Numerical Control Co., Ltd HNC-18iT v4.0 Programming Manual page 86

8.3.1 8.3.1 Spindle Spindle
8.3.1 8.3.1 Spindle Spindle Control
M03 starts spindle to rotate CW at the set speed set in the program.
M04 starts spindle to rotate CCW at the set speed in the program.
M05 stops spindle.
M03, M04 are modal M code, and they are pre-M function. M05 is modal M code, and it is
post-M function. M05 is the default setting.
8.3.2 8.3.2 Coolant Coolant
8.3.2 8.3.2 Coolant Coolant Control
M07, M08 can turn on the coolant.
M09 can turn off the coolant.
M07 and M08 are modal M code, and they are pre-M function. M09 is one-shot M code,
and it is post-M function. Moreover, M09 is the default setting.
Control Control (M03, (M03,
Control (M03, (M03, M04,
Control Control (M07, (M07,
Control (M07, (M07, M08,
M04, M04, M05) M05)
M04, M05) M05)
M08, M08, M09) M09)
M08, M09) M09)
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8. Miscellaneous Function