6 t functions, T functions, Cnc programming – Lenze ETC Motion Control User Manual
Page 179
CNC programming
Block extensions
T functions
3.4
3.4.6
l
179
EDSTCXN EN 2.0
3.4.6
T functions
The letter T in the DIN block always stands for the specification of the current
tool coordinate system, to which following position specifications relate.
Under a coordinate system, the control understands the definition of a zero
point offset for each axis.
In ETCXC, 100 such tool coordinate systems are available, which are selected
with T0 ... T99.
In addition to the offsets of the axes, a table containing 30 tool data entries,
which are shown in parameter field from P700 for the current T, is assigned
to every T−coordinate system. These tool data entries can be used within a
tool management in order to save tool−specific parameters. These are used
during the tool radius compensation.
If a 1 is entered in the machine constant MK_NULLPUNKTE_SPEICHERN, the
currently activated T coordinate system, the zero point offsets and the tool
data of all coordinate systems are saved and restored after the control has
been switched on. Otherwise, the control is in T0 after the switch on and the
offsets of all coordinate systems are zero.
In all tool coordinate systems, the zero point can be shifted or set using the
functions G92, G93 and G193.
During the change over to another coordinate system, the current actual
positions in T
old
are cleared with the zero point offsets of the new system
(T
new
) and displayed.
The tool data and the offsets of the tool coordinate systems can be loaded
via the ETC−MMI into the control or transferred from the control into the PC.
Determination of the total offset of the S and T coordinate systems (P192ff)
MK_S0T0_VERSATZ_ERLAUBT = 0
In S0: offset = Tm
In Sn: offset = S0+Sn+Tm
with n > 0
MK_S0T0_VERSATZ_ERLAUBT = 1
in S0: offset = S0+Tm
In Sn: offset = S0+Sn+Tm
with n > 0
G193 X0 Y0 T1
Set current position of the X and Y axis in T1 to zero.
T5 S=P711
Change over to T5 and then activate the S coordinate system,
which is entered in the tool data of T5 in P711.
Example