Tc_Tpg3, $Tc_Tpg4; Tc_Tpg5; Tc_Tpg6 And $Tc_Tpg7; Tc_Tpg8 - Siemens SINUMERIK 840D sl Function Manual

W4: Grinding-specific tool offset and tool monitoring
18.1 Grinding-specific tool data
18.1.3.4

$TC_TPG3, $TC_TPG4

The limit values for the grinding wheel radius and width must be entered in the parameters
$TC_TPG3 and $TC_TPG4. They are used to monitor the grinding wheel geometry.
Note
It must be noted that the minimum grinding wheel radius must be specified in the Cartesian
coordinate system for an inclined grinding wheel.
Note
A reaction occurs at the PLC if the minimum width or radius is undershot and grinding-specific
tool monitoring (Page 866) is active. Users can use these signals to define their error strategy.
18.1.3.5

$TC_TPG5

The width of the grinding wheel measured, for example, after the dressing operation, is entered
in the parameter $TC_TPG5.
18.1.3.6

$TC_TPG6 and $TC_TPG7

The upper limit values for maximum speed and peripheral speed of the grinding wheel must
be entered in the parameters $TC_TPG6 and $TC_TPG7.
Precondition: A spindle has been declared.
18.1.3.7

$TC_TPG8

The parameter $TC_TPG8 specifies the angle of inclination of an inclined wheel in the current
plane. It is evaluated for GWPS (Page 869).
Value range: -90° ≤ $TC_TPG8 < +90°
850
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions