# Wrench Production Start Stage Parameters

The parameters shown in the tables are available if one of the STwrench strategies are used. There are several combinations of strategies. Some of the parameters are only available for certain strategies and may not be visible in other strategies.

Parameter rules are automatically checked. If a violation occurs, the error indicator is displayed beside the incorrect parameters. Select the error indicator to display more information about the error.

Switching between strategies can result in the error indicator being shown. This indicates that the chosen combination is invalid, and needs to be corrected.

For more information about the STwrench, see the STwrench User Guide (printed matter number 9836 4134 01).

Parameters in the STwrench start step
Parameter name | Condition | Description | Default value
--- | --- | --- | ---
Tag number |  | On: after enabling TAG Check switch (Configurations > Tool Configuration > TAG Check > On), a correct TAG number is required to run the tightening program. Off: The TAG number is not checked. | Off
Required tag number | Tag number = On | The required TAG number for this tightening program. | 1
Direction |  | The parameter options are CW (clockwise) or CCW (counterclockwise). |
Rehit detection |  | The parameter options are: Complete or Off . | Off
Torque correction coefficient |  | In certain cases extensions may be needed to fit the application. In this case the wrench measurement must be compensated to show a correct value. For more information about to calculate the correction coefficient, see the STwrench User Guide (printed matter number 9836 4134 01). The parameter is stored in the RFID TAG in the End-fitting tool. | 1.0
Angle correction |  | In certain cases extensions may be needed to fit the application. In this case the wrench measurement must be compensated to show a correct value. To calculate the correction coefficient, please refer to the STwrench user guide. The parameter is stored in the RFID TAG in the End-fitting tool. | 0°
Linear slope coefficient |  | Linear slope coefficient characterizes the joint stiffness in the linear part of the curve, as torque/angle slope in the Nm/Deg measurement unit. | 0.5

NOTICE

The correction coefficients alter the STwrench measurement. It may cause an improper reading. Before making any corrections, refer to the latest version of the STwrench User Guide (printed matter number 9836 4134 01).