Settings For The Machine; Switching Over The Coordinate System (Mcs/Wcs); Switching The Unit Of Measurement - Siemens SINUMERIK 840D sl Universal Operating Manual

5.4

Settings for the machine

5.4.1

Switching over the coordinate system (MCS/WCS)

The coordinates in the actual value display are relative to either the machine coordinate system
or the workpiece coordinate system.
By default, the workpiece coordinate system is set as a reference for the actual value display.
The machine coordinate system (MCS), in contrast to the workpiece coordinate system (WCS),
does not take into account any zero offsets, tool offsets and coordinate rotation.
Procedure
5.4.2

Switching the unit of measurement

You can set millimeters or inches as the unit of measurement for the machine. Switching the unit
of measurement always applies to the entire machine. All required information is automatically
converted to the new unit of measurement, for example:
• Positions
• Tool offsets
• Work offsets
Universal
Operating Manual, 07/2021, 6FC5398-6AP40-6BA4
1. Select the "Machine" operating area.
2. Press the <JOG> or <AUTO> key.
3. Press the "Act.vls. MCS" softkey.
The machine coordinate system is selected.
The title of the actual value window changes in the MCS.
Machine manufacturer
The softkey to changeover the coordinate system can be hidden. Please refer to the
machine manufacturer's specifications.
Setting up the machine
5.4 Settings for the machine
103