Siemens SINUMERIK 840D sl Commissioning Manual page 578

Configuring cycles
22.10 Turning with ShopTurn
The position to which the counterspindle travels when the program starts is defined in the
following channel-specific cycle setting data:
SD55232 $SCS_SUB_SPINDLE_REL_POS
The following channel-specific setting data become effective when traveling to the fixed stop:
SD55550 $SCS_TURN_FIXED_STOP_DIST
SD55551 $SCS_TURN_FIXED_STOP_FEED
SD55552 $SCS_TURN_FIXED_STOP_FORCE
Between traveling to the fixed stop and gripping, the counterspindle can retract a short
distance to counteract compressive stress in the workpiece.
SD55553 $SCS_TURN_FIXED_STOP_RETRACTION
After gripping you can cut off the workpiece. Before doing so, the counterspindle can retract
a short distance with the workpiece to exert tensile stress on the workpiece. This relieves
pressure on the tool when cutting off.
SD55543 $SCS_TURN_PART_OFF_RETRACTION
After parting, you can carry out a cut-off check and for turning, use the "Travel to fixed stop"
function. You can activate/deactivate the cut-off check using the channel-specific cycle
setting data:
SD55540 $SCS_TURN_PART_OFF_CTRL_DIST
SD55541 $SCS_TURN_PART_OFF_CTRL_FEED
SD55542 $SCS_TURN_PART_OFF_CTRL_FORCE
The cut-off is successful when travel to fixed stop fails. The following alarms are output:
Alarm
20091
20094
572
Alarm text
Axis %1 has not reached the fixed stop.
Axis %1 end stop has been aborted.
Retraction position Z for counterspindle
Distance for travel to fixed stop.
Feedrate for travel to fixed stop.
Force for travel to fixed stop in %.
Retraction distance before clamping
after fixed stop.
Retraction distance before cut-off.
Distance for cut-off check.
Feedrate for cut-off check.
Force for cut-off check in %.
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
SINUMERIK Operate (IM9)