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11 preassigned q parameters, Values from the plc: q100 to q107, Wmat block: qs100 – HEIDENHAIN iTNC 530 (340 49x-03) User Manual

Page 612: Active tool radius: q108

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11 Programming: Q Parameters

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11.11 Preassigned Q Parameters

The Q parameters Q100 to Q199 are assigned values by the TNC.
These values include:

„

Values from the PLC

„

Tool and spindle data

„

Data on operating status

„

Results of measurements from touch probe cycles etc.

Values from the PLC: Q100 to Q107

The TNC uses the parameters Q100 to Q107 to transfer values from
the PLC to an NC program.

WMAT block: QS100

The TNC saves the material defined in the WMAT block in parameter
QS100.

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

Do not use preassigned Q parameters (or QS parameters)
between Q100 and Q199 (QS100 and QS199) as calculation
parameters in NC programs. Otherwise you might receive
undesired results.