Siemens sinumerik 840D sl Function Manual page 633

Examples
4.1 Speed/torque coupling
4.1.2 Close coupling via the PLC
This application allows you to close or separate a master-slave coupling between the
machine axes AX1=Master axis and AX2=Slave axis during operation.
Preconditions
• One configured master axis
• Activation of a master-slave coupling via
• The coupling is open.
Typical sequence of operations
Action
•
•
•
•
•
46
MD37250 $MA_MS_ASSIGN_MASTER_SPEED_CMD ≠ 0
MD37262 $MA_MS_COUPLING_ALWAYS_ACTIVE=0
Approach coupling position
Close coupling mechanically
Request to close the coupling
Read back coupling state
Move master-slave grouping
Effect/comment
Each axis moves to the coupling position.
Both axes are mechanically coupled to one
another.
PLC interface signal "Master/slave on" DB32, ...
DBX24.7 is set.
When the axis is at a standstill, the coupled slave
axis sets PLC interface signal "Master/slave
active" DB32, ... DBX96.7 and clears "Position
controller active" DB32, ... DBX61.5.
Wait for checkback signal.
The master axis is moved.
Special functions: Speed/Torque Coupling, Master-Slave (TE3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0