To formulate your calculation, you must first define the placeholders for the input and output variables of the calculation.

In the Placeholders tab, enter the placeholders in order. Each time you complete a line, the next free line is automatically created.

• Name: Name of the placeholder as it will subsequently be used in the calculation function.

• Default constant value: Enter a value here that the placeholder should have if no signal is linked or the signal is invalid. Note that this value must match the value type.

• Value type: Select the value type from the drop-down list here. Choose the type that matches the signal or constant. The following types are available for selection:

  • Numeric... for a numerical value

  • Digital... for a purely digital signal (True/False, 0/1)

  • Text... for a text signal

  • Any (numeric default)... The value type is detected automatically

  • Any (digital default)... The value type is detected automatically

  • Any (text default)... The value type is detected automatically

• Comment: You can enter a short description of the placeholder here. This text will then be displayed later in the General tab of the computation module that you use to link the placeholders to the signals.

In the next step, you can formulate the expressions in the Analog and/or Digital tabs.

Example

Calculation of total and differential rolling force with limit-value monitoring

1. Add computation module and then configure profiles.

2. Define placeholders for the two measured input values "rolling force, operating side" and "rolling force, drive side", as well as the product ID.