Siemens SINUMERIK 828D Programming Manual page 350

Path action
11.2 Continuous-path mode (G64, G641, G642, G643, G644, G645, ADIS, ADISPOS)
● The block does not contain traversing motion (zero block).
Continuous-path mode in rapid traverse G0
One of the specified functions
traverse motion. Otherwise, the default in the machine data is used.
References
For further information about continuous-path mode see:
Function Manual, Basic Functions; Continuous-Path Mode, Exact Stop, LookAhead (B1).
350
This occurs when:
– Synchronized actions are active.
Normally, the interpreter eliminates zero blocks. However, if synchronous actions are
active, this zero block is included and also executed. In so doing, an exact stop is
initiated corresponding to the active programming. This allows the synchronous action
to also switch.
– Zero blocks are generated by program jumps.
/ or , or -
G60 G9 G64 G641
Programming Manual, 07/2010, 6FC5398-1BP40-0BA0
, also has to be specified for rapid
G645
Fundamentals