Siemens SINUMERIK 840DE Programming Manual page 272

Feedrate Control and Spindle Motion
7.6 Cylinder surface transformation (TRACYL)
The path of the grooves is programmed with reference to the unwrapped, level surface of the
cylinder.
References:/PGA/ Programming Guide, Advanced, chapter "Transformations"
Programming
TRACYL(d) or TRACYL(d,t)
Or
TRAFOOF
Parameters
TRACYL (d)
TRACYL(d,n)
d
TRAFOOF
References: An active TRACYL transformation is likewise deactivated if one of the other
transformations is activated in the relevant channel (e.g. TRANSMIT, TRAANG, TRAORI).
7-22
Activates the first declared TRACYL function
Activates the nth declared TRACYL function. N can be up to
2, TRACYL(d,1) is the same as TRACYL(d).
Value for the current diameter of the cylinder to be
machined.
Transformation off
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals