Siemens SINUMERIK 808D Function Manual page 141

Preparation, probe calibration
The internal sequence is the same as in measuring. The measuring results, however, are stored in the data for the probe
triggering points - not in the tool offsets.
Note
The internal NC programs for measuring or calibrating are configured so that measuring is carried out with the rising edge of
the probe.
Measuring sequence
"JOG" mode is selected. The measuring feed is entered. The probe is calibrated or the precise measuring trigger points are
entered.
Function Manual
01/2017
1. Select "JOG" mode.
2. The following values should be entered in the displayed window via this softkey:
return plane, safety clearance, JOG feed, variable increment and direction of rotation of the
spindle for general use in JOG and for tool measuring.
3. The following value must be entered in the window which opens when pressing this softkey:
Feed for automatic probe approach in the measuring program.
•
Probe triggering points (the values are set during calibration).
•
If the precise values are known, they can be entered manually. The probe does not then
need to be calibrated).
4. The adjustment sequence of the probe (calibration) is controlled via these two softkeys and
the opening window. The tool used in this case is the calibration tool with precisely known
and entered dimensions.
The calibration tool for the milling technology is of "cutter" type.
1. Depending on the tool type, the measuring sequence is controlled via this softkey and fur-
ther softkeys.
2. The IS "Measuring in JOG is active" (DB1700.DBX0003.7) is transmitted to the PLC from
the HMI by pressing this softkey. PLC can specify a different T number to the active one via
the IS "T number for tool measuring in JOG" (DB1900.DBD5004). If the probe switches
when the selected axis is traversed, NCK outputs the IS "Probe 1 active"
(DB2700.DBX0001.0). The PLC then sets IS "Feed disable" (DB3200.DBX0006.0) and NCK
stops the axis movement. Feed disable is maintained as long as a traverse key is de-
pressed in JOG and the IS "Measuring in JOG is active" (DB1700.DBX0003.7) is set. After
this the PLC outputs the IS "Reset" (DB3000.DBX000.7). The traverse movement in JOG is
thereby cancelled.
3. HMI recognizes switching of the probe and outputs the change mode to "AUTO", IS com-
mand "AUTOMATIC mode" (DB1800.DBX0000.0) after the traverse key has been released
(immediately after handwheel jog). PLC transfers this to the NCK (DB3000.DBX0000.0).
"AUTO" mode is set to active by the NCK (IS "Active mode AUTOMATIC"
(DB3100.DBX0000.0)) and is displayed in the HMI screen. PLC cancels the IS "Feed disa-
ble (DB3200.DBX0006.0). The HMI then outputs the IS "Mode change disable"
(DB1800.DBX0000.4) to the PLC. If the PLC recognizes this signal (is only applied for one
PLC cycle), the PLC outputs the IS "Mode change disable" (DB3000.DBX0000.4) to the
NCK. An NC measuring program has been loaded to the NCK by the HMI. This is activated
now. The automatic direction of approach to the probe and the traverse path including the
safety clearance is calculated in this measuring program.The HMI outputs the command to
start the measuring program to the PLC via the IS "Start measuring in JOG"
(DB1800.DBX0000.6). The signals in the V1800 area are only applied for a single PLC
cycle. The IS "Start measuring in JOG" is therefore stored intermediately in the PLC. The
NC measuring program is launched by the PLC by outputting the IS "NC START"
(DB3200.DBX0007.1) to the NCK.
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