Glossary - Siemens SINUMERIK 840D sl Programming Manual

Glossary

Actual/set difference
Difference between measured and expected value.
Asynchronous subroutine
Part program that can be started asynchronously to (independently of) the current program
status using an interrupt signal (e.g., "Rapid NC input" signal).
Blank measurement
The blank measurement ascertains the position, deviation, and zero offset of the workpiece
in the result of a -> workpiece measurement.
Calibrating tool
Is a special tool (usually a cylindrical stylus), whose dimensions are known and that is used
for precisely determining the distances between the machine zero and the probe trigger point
(of the workpiece probe).
Calibration
During calibration, the trigger points of the probe are ascertained and stored in the
measuring cycle data in block GUD6.
Collision monitoring
In the context of measuring cycles, this is a function that monitors all intermediate positions
generated within the measuring cycle for the switching signal of the probe. When the probe
switches, motion is stopped immediately and an alarm message is output.
Data blocks for measuring cycles
Data blocks GUD5.DEF, GUD6.DEF, GUD7DEF and GUD7.MC.DEF contain data required
for configuration and execution of the measuring cycles.
These blocks must be loaded into the control during start-up. They must then be adapted
according to the characteristics of the relevant machine by the machine manufacturer.
They are stored in the nonvolatile storage area of the control such that their setting values
remain stored even when the control is switched off and on.
Measuring cycles
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
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