15 Tables 04.0015.2 List of system variables 15 Siemens AG 2000. All rights reserved15-512 SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 EditionIdentifier Type Description: System variable/value range/index Part pro Sync O S$TC_CARR18 REAL $TC_CARR18[n]x component of offset vector l4The max. number of toolholders can be set via machine data.Default setting is = 0; i.e. NCI has no such data.R W 5.3$TC_CARR19 REAL $TC_CARR19[n]y component of offset vector l4The max. number of toolholders can be set via machine data.Default setting is = 0; i.e. NCI has no such data.R W 5.3$TC_CARR20 REAL $TC_CARR20[n]z component of offset vector l4The max. number of toolholders can be set via machine data.Default setting is = 0; i.e. NCI has no such data.R W 5.3$TC_CARR21 AXIS $TC_CARR21[n]axis identifier for axis of rotation v1The max. number of toolholders can be set via machine data.Default setting is = 0; i.e. NCI has no such data.R W 5.3$TC_CARR22 AXIS $TC_CARR22[n]axis identifier for axis of rotation v2The max. number of toolholders can be set via machine data.Default setting is = 0; i.e. NCI has no such data.R W 5.3$TC_CARR23 CHAR $TC_CARR23[n]Kinematic type0:Alarm (14153)n:Alarm (14153)Permissible options:T:only the tool can rotate (default)P:only the part can rotateM: tool and part can rotate (mixed mode)Uppercase and lowercase are permissible.R W 5.3