Extended System Of Units Functionality - Siemens SINUMERIK 840D Function Manual

G2: Velocities, setpoint / actual value systems, closed-loop control
2.3 System of units, metric/inch
Tool data
Work offsets
Data in the workpiece coordinate
system
NC/PLC interface
In the case of NC/PLC interface signals containing dimension information, e.g. feedrate for path
and positioning axes, data exchange is carried out with the PLC in the configured basic system.
Reading in external part programs
If part programs, including data sets (work offsets, tool offsets, etc.), programmed in a system
of units other than the basic system are read in from an external source, then the basic system
must first be changed.
2.3.1.2

Extended system of units functionality

From SW 5 and higher, the system of units functionality has been extended, which significantly
simplifies toggling between systems of units.
The functions include:
● New G commands G700/G710 (see "Programming (Page 45)")
● Data backup with system of units identifier INCH/METRIC (see "Commissioning
(Page 41)")
● Automatic data conversions when the system of units is changed, e.g. for:
– Work offsets
– Compensation data (EEC, QEC)
– Tool offsets
– ...
For compatibility reasons, the extended system of units functionality must be activated using a
machine data (see "Commissioning (Page 41)").
2.3.1.3 Extended system of units functionality
From SW 5 and higher, the system of units functionality has been extended, which significantly
simplifies toggling between systems of units.
The functions include:
● System of units switchover at the user interface
● New G commands G700/G710 (see "Programming (Page 45)")
40
Display
in the basic system
x
x
Function Manual, 06/2019, A5E47437747B AA
in the programmed system of
units
x
Axes and spindles