Position displays

Application

The control offers various modes in the position display, for example values from different reference systems. You can choose one of the modes available based on the application.

Description of function

The control has position displays in the following areas:

  • The Positions workspace
  • Status overview on the control bar
  • The POS tab of the Status workspace
  • The POS tab of the Simulation status workspace

On the POS tab of the Simulation status workspace the control always shows the Nominal pos. (NOML) mode. In the Status and Positions workspaces you can choose the mode of the position display.

The control offers the following modes for the position display:

Mode

Meaning

Nominal pos. (NOML)

This mode shows the value of the currently calculated target position in the input coordinate system I-CS.

When the machine moves the axes, the control compares the coordinates of the measured actual position with the calculated nominal position in predefined time intervals. The nominal position is the position at which the axes should be located at the time of comparison, based on the calculation.

 
Tip

The Nominal pos. (NOML) and Actual pos. (ACT) modes differ solely with regard to the servo lag.

Actual pos. (ACT)

This mode shows the currently measured tool position in the input coordinate system I-CS.

The actual position is the measured position of the axes, as determined by encoders at the time of comparison.

Nominal reference position (RFNOML)

This mode shows the calculated target position in the machine coordinate system M-CS.

 
Tip

The Nominal reference position (RFNOML) and Actual reference position (RFACTL) modes differ solely with regard to the servo lag.

Actual reference position (RFACTL)

This mode shows the currently measured tool position in the machine coordinate system M-CS.

Servo lag (LAG)

This mode shows the difference between the calculated nominal position and the measured actual position. The control determines the difference in predefined time intervals.

Handwheel superimposed (M118)

This mode shows the values that you move using the M118 miscellaneous function.

Activating handwheel superimpositioning with M118 (#21 / #4-02-1)

 
Machine

Refer to your machine manual.

In the machine parameter progToolCallDL (no. 124501), the machine manufacturer defines whether the position display takes the delta value DL from the tool call into account. The modes NOML. and ACTL. as well as RFNOML and RFACTL then differ from each other by the value DL.

Switching the position display mode

To switch the position display mode in the Status workspace:

  1. Select the POS tab

  1. Select Settings in the position display area
  2. Select the desired mode for the position display (e.g., Actual pos. (ACT))
  3. The control displays the positions in the selected mode.

Notes

  • The machine parameter CfgPosDisplayPace (no. 101000) defines the display accuracy by the number of decimal places.
  • When the machine moves the axes, the control displays the distances-to-go of the individual axes with a symbol and the appropriate value next to the current position.
  • Axis display and position display