Siemens SINUMERIK 840D sl Function Manual page 288

Manual and Handwheel Travel (H1)
Brief description
Selection of machine function
The machine functions available in JOG mode can be selected from the following locations:
Via machine control panel (MCP)
Via PLC user program
The PLC user program transfers the machine function pending at the machine-control-panel
interface to the relevant PLC/NCK interface. Here the axis-specific NCK/PLC interface
should be used for a machine axis/spindle, and the channel-specific NCK/PLC interface
should be used for a geometry axis:
288
→ e.g. user DB interface
→ PLC/NCK interface
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions