Siemens SINUMERIK 828D Commissioning Manual page 267

● PLC:
– Execute tool change
– Move tools in the magazine
– Gripper control
– Magazine control if applicable
– Safety interlocks
– Provision of the structure of tool movements in transfer step tables
– Acknowledgment of the tool movements with acknowledgment step tables
● SINUMERIK Operate:
– Tool data display, input/output
– Magazine data display, input/output
– Load/unload relocation dialog
PLC user program
The PLC user program executes the tool management jobs and acknowledges all position
changes of the tools (and magazines). The monitoring and prevention of collisions is the task
of the PLC user program alone, for example:
● Multiple spindles are using the same magazine.
● The paths of simultaneous pending jobs cross.
● As long as a large tool is located in the shifter, the chain must not be moved.
PLC firmware
Functions of the PLC firmware:
● Assignment of tool management jobs to the PLC user program
● Communication of PLC user program acknowledgments to the tool management
● Transfer feedback signals for each acknowledgment (acknowledgment incorrect with error
number or acknowledgment OK) to the PLC user program.
● In addition: Register job status
CNC commissioning
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
Tool management
9.1 Fundamentals
253