Tormach PCNC 770 - Page 95

Chapter 7
95
UM10350_PCNC770_Manual_0916A
Programming
If the second group (the parameter sengs) is reordered, there is no change in the meaning of
the line unless the same parameter is set more than once. In this case, only the last seng of the
parameter takes eect. For example, aer the line:
#3=15 #3=6
has been interpreted, the value of parameter 3 is 6. If the order is reversed to
#3=6 #3=15
and the line is interpreted, the value of parameter 3 is 15.
If the third group (the comments) contains more than one comment and is reordered, only the last
comment is used. If each group is kept in order or reordered without changing the meaning of the
line, then the three groups may be interleaved in any way without changing the meaning of the line.
For example, the line:
G40 G01 #3=15 (foo) #4=-7.0
has ve items and means exactly the same thing in any of the 120 possible orders, such as #4=-
7.0 G01 #3=15 G40 (foo), for the ve items. The order of execuon of items on a line is
crical to safe and eecve mill operaon. If items occur on the same line, they are executed in a
parcular order. For more informaon, see Order of Execuon table later in this chapter.
To impose a dierent order (e.g. to turn coolant o before the spindle is stopped), code the
commands on separate blocks.
Order of Execution
Order Item
1 Comment (including message)
2 Set feed rate mode (G93, G94, G95)
3 Set feed rate (F)
4 Set spindle speed (S)
5 Special I/O (M62 to M68) – currently not supported
6 Change tool (T)
7 Spindle on/off (M03, M04, M05)
8 Save State (M70, M73, restore state (M72), invalidate state (M71)
9 Coolant on/off (M07, M08, M09)
10 Enable/disable overrides (M48, M49, M50, M51, M52, M53)
11 Operator dened commands (M100 to M199)
12 Dwell (G04)
13 Set active plane (G17, G18, G19)
14 Set length units (G20, G21)
(connued on next page...)