# Denominator gear ratio of tool (P-TOOL-00017)

P-TOOL-00017 | Gear ratio of a tool (denominator)
Description | If the tool has a gear, this parameter specifies the gear ratio. A gear change occurs in the position controller after the tool is changed. The gear ratio need not then be considered when programming the tool rotary speed.
Parameter | wz[i].gear_ratio_denom
Data type | SGN32
Data range | 0 ≤ gear_ratio_denom ≤ MAX(SGN32)
Dimension | ----
Default value | 0
Remarks | It is only permitted to change a tool with a gear speed when the spindle is at standstill (P-TOOL-00012) If the numerator or the denominator is assigned the value 0, no gear change takes place.