10.12 Preassigned Q Parameters; Values From The Plc: Q100 To Q107; Active Tool Radius: Q108 - HEIDENHAIN TNC 620 User Manual

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10.12 Preassigned Q parameters

The Q parameters Q100 to Q199 are assigned values by the
control. The following types of information are assigned to the Q
parameters:
Values from the PLC
Tool and spindle data
Data on operating status
Results of measurements from touch probe cycles etc.
The control saves the preassigned Q parameters Q108, Q114 and
Q115 - Q117 in the unit of measure used by the active program.
Danger of collision!
Q parameters are used in the HEIDENHAIN cycles, in machine
tool builder cycles, and in supplier functions. You can also
program Q parameters within the NC program. If, when using Q
parameters, the recommended Q parameter ranges are not used
exclusively, then this can lead to overlapping (reciprocal effects)
and thus cause undesired behavior. Danger of collision during
machining!
Only use Q parameter ranges recommended by
HEIDENHAIN.
Comply with the documentation from HEIDENHAIN, the
machine tool builder, and suppliers.
Check the machining sequence using a graphic simulation
You must not use preassigned Q parameters (QS
parameters) between Q100 and Q199 (QS100 and
QS199) as calculation parameters in the NC programs.

Values from the PLC: Q100 to Q107

The control assigns values from the PLC to parameters Q100 to
Q107 in an NC program.

Active tool radius: Q108

The active value of the tool radius is assigned to Q108. Q108 is
calculated from:
Tool radius R (tool table or TOOL DEF block)
Delta value DR from the tool table
Delta value DR from the TOOL CALL block
The control remembers the current tool radius even if
the power is interrupted.
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NOTICE
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Programming Q Parameters | Preassigned Q parameters