I cannot see how to limit the height of the retract in a peck cycle so that once the drill has reached depth of say two diameters, it does not retract higher than the top of the work-piece - idea is to prevent coolant from washing chips into the hole.
If you think this idea is crazy, it won't hurt my feeling if you write it.
A lot depends on the machine controller rather than the PTC cycle.
Typically, you tell Creo to insert a drill cycle with the peak option and then some parameters like depth, clearance place, feed, etc. The post-processor will generate a G84 cycle command for the machine controller to interpret based on the parameters of the G84 command.
The only way to get what you want is to write a custom peak drill cycle in the post-processor that does not use the G84 command but a series of G80 commands to simulate a G84 with your limited retract plane.
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