Signals From Channel (Db21 - Siemens sinumerik 840D sl Function Manual

Detailed description
2.10 Clearance Control (TE1)
DB21, ...
DBX1.5
Edge evaluation: no
Signal state 1 or
edge change 0 → 1
Signal state 0 or
edge change 1 → 0
Application example
Corresponding to ....
2.10.2

Signals from channel (DB21, ...)

DB21, ...
DBX37.3
Edge evaluation: No
Signal state 1 or
edge change 0 → 1
Signal state 0 or
edge change 1 → 0
DB21, ...
DBX37.4
Edge evaluation: No
Signal state 1 or
edge change 0 → 1
Signal state 0 or
edge change 1 → 0
18
CLC_Override
The channel-specific override DB21, ... DBB4 (feed rate override) also applies to the
clearance control
Override settings < 100% reduce corresponding to the velocity limitation for the overriding
motion, as defined in the following machine data:
MD62516 $MC_CLC_SENSOR_VELO_LIMIT (velocity of clearance control motion)
Override settings > 100% apply the limitation from the machine data.
The maximum velocity of the control motion is not dependent on the override setting
The difference for the operator is particularly dependent on whether the sensor motion is
stopped or not with a 0 override.
channel-specific override settings:
DB21, ... DBB4 (feed rate override)
DB21, ... DBX6.7 (feed rate override active)
CLC is active
Clearance control is activated.
Clearance control is deactivated.
CLC motion at lower motion limit
The traversing movement of the clearance-controlled axes based on clearance control has
been stopped at the upper movement limit set in
MD62505 $MC_CLC_SENSOR_LOWER_LIMIT (Lower motion limit of clearance control)
or programmed with CLC_LIM(..).
Note:
The following signal is set at the same time:
DB21, ... DBX37.5 (CLC-stopped upper limit)
→ see above signal "CLC motion has stopped".
Clearance control has left the lower limitation.
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Special functions: NC/PLC interface signals (Z3)