Siemens SINUMERIK 840D sl Programming Manual page 448

Data description
9.2 Cycle data
ZO compensation mode in CYCLE974, CYCLE977, CYCLE978, CYCLE979, CYCLE997
_CHBIT[21]=0:
_CHBIT[21]=1:
Speed reduction in tool measurement in CYCLE971
_CHBIT[22]=0:
_CHBIT[22]=1:
Recoding of tool point direction during tool measurement in CYCLE982
_CHBIT[23]=0:
_CHBIT[23]=1:
Channel-oriented marker for basic dimension system
_CHBIT[24]=0:
_CHBIT[24]=1:
When starting up the measuring cycles, this bit has to be set according to the basic settings
of the PLC (MD 10240: SCALING_SYSTEM_IS_METRIC) must be set.
If modifying the basic settings of the control results in _CBIT[24] no longer matching MD
10240, the channel-specific dimensioned values are converted in each channel the first time
a measuring cycle is called.
9-38
The offset is applied additively in FINE, if MD 18600:
MM_FRAME_FINE_TRANS=1, otherwise in COARSE.
The offset is applied in COARSE. FINE is taken into account and is then
subsequently deleted.
When measuring tools with rotating spindle and when the speed (_CBIT[12]=0)
is calculated in the cycle, for multiple measurements, the last measurement is
carried out at a reduced speed.
For multiple measurements with the spindle rotating and calculation in the cycle,
the speed remains constant.
Standard setting, no recoding
Internal recoding, tool point direction mirroring about X axis
(tool revolver -180 degrees, Z not mirrored)
Basic system is based on inches
The basic system is metric
Programming Manual, Release 04/2006, 6FC5398-4BP10-0BA0
Measuring cycles