Mapping a Variable to the Oscilloscope

A probe See Softscope - Probe item. (variable) can be directly The orientation components of a vector in space. plugged or mapped from within the Oscilloscope:

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

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

   

   Figure 1: 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 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 eligible for the Softscope as long as they are not in a UDFB instance.

     This includes: BOOL, BYTE, DINT, DWORD, INT, LINT, LREAL, LWORD, SINT, TIME, UDINT, UINT, ULINT, USINT, WORD.

     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. Some oscillations are visible because it is an instant velocity, not an average velocity. is not visible), when in Simulated mode.

For more details see:

• Axis pipe block positions Position means a point in space which is described by different coordinates. Depending on the used system and transformation it can consist of a maximum of six dimensions (coordinates).This means three Cartesian coordinates in space and coordinates for the orientation. In ACS there can be even more than six coordinates. If the same position is described in different coordinate systems the values of the coordinates are different.; click here....
• 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.
4. (Optional) Set the Derivation Order.
   This is the number of derivatives to apply to the trace.

If the variable selected is the axis command position, then setting the Derivation Order to:

• 1 generates a trace for the axis command velocity For a group of axes this means: In ACS the velocities of the different axes. In MCS and PCS it provides the velocity of the TCP.
• 2 generates a trace for the axis command acceleration A change in velocity over time. Because velocity is a vector, it can change in two ways: a change in magnitude and/or a change in direction. In one dimension, acceleration is the rate at which something speeds up or slows down. However, more generally, acceleration is a vector quantity expressing the change with time of the velocity both in magnitude and in direction. See these Wikipedia articles for more information: http://en.wikipedia.org/wiki/Velocity http://en.wikipedia.org/wiki/Euclidean_vector http://en.wikipedia.org/wiki/Rate_(mathematics).
• 3 generates a trace for the axis command jerk In physics, jerk is the rate of change of acceleration. More precisely, the derivative of acceleration with respect to time..
5. (Optional) Set the Derivation Period Motor systems having a reciprocating or oscillating motor that operates synchronously with the periodicity of the source which supplies the electrical energy. The period of execution of a pipe is the time spent between two successive computations of set values for the same pipe. The period of execution of a pipe is specified by the PERIOD parameter of the input pipe block..
   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.

Un-map Variables from the Scope

Use this procedure to disconnect a probe:

1. Right-click on the channel to remove from the channels list and select the Unmap command in the menu to disconnect the probes.
2. Select the Unmap all Oscilloscope Channels command from the right-mouse menu in the Dictionary or the Pipe Network.