Tormach PCNC 770 - Looping Subroutines

Chapter 7
141
UM10350_PCNC770_Manual_0916A
Programming
7.10.1.5 Looping Subroutines
Subrounes can be looped using the Do/while or while/endwhile keyword constructs.
Do/While Loop
The Do/While loop executes a block of code once and connues to execute the code block unl the
while argument evaluates to true.
Do/While Loop Example:
#1 = 0 (assign parameter #1 the value of 0)
o100 do
(debug, parameter 1 = #1)
o110 if [#1 EQ 2]
#1 = 3 (assign the value of 3 to parameter #1)
(msg, #1 has been assigned the value of 3)
o100 continue (skip to start of loop)
o110 endif
(some code here)
#1 = [#1 + 1] (increment the test counter)
o100 while [#1 LT 3]
M02
While/endwhile
The while/endwhile repeats a set of statements an indenite number of mes, as long as the while
argument evaluates to true.
While/endwhile Example:
(draw a sawtooth shape)
G00 X1 Y0 (move to start position)
#1 = 1 (assign parameter #1 the value of 0)
F25 (set a feed rate)
o101 while [#1 LT 10]
G01 X0
G01 Y[#1/10] X1
#1 = [#1+1] (increment the test counter)
o101 endwhile
M02 (end program)
The following statements cause an error message and abort the interpreter:
• A return or endsub not within a sub denion
• A label on repeat which is dened elsewhere
• A label on while which is dened elsewhere and not referring to a do