Centroid Community CNC Support Forum

Hope this explains in short. This is my NC code :
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N1010 G0G90G54X0Y0Z0
N1020 G01G54Z-25F500
N1025 M17
N1030 G01G90G54X200.0Y0 F4000
N1040 G01G90G54X200.0Y200 F4000
N1050 G01G90G54X0Y200 F4000
N1060 G01G90G54X0Y0 F4000
N1150 M30

Below is part program M17 called in above NC file ...

Dear Keith/All,
I am not probably not able to explain to you or everyone out here.
Z axis moving to G28 defined position is known.
But when it returns or say resume after cycle start pressed, then which parameter / variable is holding the value to move Z axis position to a point from where it was ...

If tool on z axis is having problem, to resolve first Z axis moves to a defined safe position & then Cnc controller allows operator to move x & y axis in Tool Check function.

I want to know which is that parameter where value is stored by which CNC controller moves z axis to safe position?

Can I ...

I fully understand its text file.
My thought is to protect it from thief than normal one.
A rule is protect your intellectual property, not from common / normal operator (as he won't even try for it) but from a thief.
But a thief will enter your house even if it is locked, security system ...

Customized Macros we used in main program needs to be protected with password for view & edit both e.g. M17, M18.

Can I protect my sub programs for editing & visibility both?