HEIDENHAIN TNC 360 User Manual - Manual (Page 157)

TNC 360 8-4
8 Cycles
8.1 General Overview
Dimensions in the tool axis
The dimensions for tool axis movement are always referenced to the
position of the tool at the time of the cycle call and interpreted by the
control as incremental dimensions. It is not necessary to press the
incremental key.
The algebraic signs for SETUP CLEARANCE, TOTAL HOLE DEPTH and
JOG INCREMENT define the working direction. They must be entered
identically (usually negative).
Customized macros
The machine tool builder can store additional cycles in the control
memory. These cycles can be called up under cycle numbers 68 to 99.
Information on these cycles is available from the machine builder.
The TNC assumes that at the beginning of the cycle the tool is positioned over the workpiece at the clearance
height.