Mapping a Variable to the Oscilloscope

A probe (variable) can be directly plugged or mapped from within the Oscilloscope:

1. Right-click on any channel (already mapped or not) in the channels list and select the Map option to open the Scope Variable Selector.
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   • If your application is not connected and running, the following message is displayed.
     

2. Navigate through the available variables and select the one you want to connect to the channel

   

   Figure 6-32: Using the Variable Selector to choose a variable to be mapped in the Oscilloscope

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   • The Scope Variable Selector contains only the PLC "Programmable Logic Controller" A Programmable Logic Controller, PLC, or Programmable Controller is a digital computer used for automation of industrial processes, such as control of machinery on factory assembly lines. Used to synchronize the flow of inputs from (physical) sensors and events with the flow of outputs to actuators and events variables that are eligible for the softscope (i.e. BOOL, INT, SINT, DINT, LINT, UINT, USINT, UDINT, ULINT, BYTE, WORD, DWORD, LWORD, TIME and LREAL, as long as they are not in a UDFB instance).

     Additionally, only a subset of variables are displayed (e.g. ActualVelocity 1 The measured value is the instant velocity of the axis in RPM*1000. Note that you can see some oscillations because it is an instant velocity, not an average velocity. is not visible), when in Simulated mode.

For more details on:

• Axis pipe block positions, About Associated Data on Positions
• PLCopen A vendor -and product- independent worldwide association active in Industrial Control and aiming at standardizing PLC file formats based on XML Axis positions, Axis Positions Data
3. (Optional) Set the Derivation Order.
4. (Optional) Set the Derivation Period. The value entered should be either 0.0 (no modulo) or the Modulo Period, e.g. 360.0.
   If the selected Derivation Order is greater than zero, the Derivation Period of the selected signal can be used to remove rollover spikes in the derivative value if the variable is of a periodic nature as the result of "modulo" behavior.

You can also disconnect a probe as follows: