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C 2.2.13)
Markers
for inhibiting
the Servo Loop
Marker
No.
Function
2492
Enable the servo loop for the X-axis
2493
Enable the servo loop for the Y-axis
2494
Enable the servo loop for the Z-axis
2495
Enable the servo loop for the IV-axis
2544
Open X-axis
servo loop
2545
Open Y-axis
servo loop
2546
Open Z-axis servo loop
2547
Open I V-axis
servo loop
Signal direction
PLC-cNC
-
Operation
with
open loop control
(after a positioning
proceclure)
generally
implies a longer delay irrswitching
axes over. Since these delays are unnecessary
for machines
with
permanently
activated
live servo control
loops,
the marker
"Enable
Servo Loop"
(markers
2492 to 2495)
hzs been made available. Only when these markers
are set, does the NC-part
of the control
wait for the PLC-signal
"Open
Servo loop"
(markers
2544 to 2547),
when
the marker
"Axis
in Position"
(markers
2008 to 2011)
from
the NC-part
of the control
has been set.
In operation
without
"Enable
Opening
of Control
Loop",
the switching
over from one axis to another
takes
place as quickly
as possible.
Note:
If the marker
for "Enable
opening
of Control
Loop"
has not been set, the control
loop cannot
be opened with
the markers
2544 to 2547.
Should a control
loop be opened (e.g. for cla.mping of axes), the markers
are set as follows:
Set corresponding
enable marker
2492 to 2495
The axis is in position
(marker
2008 to marker
2011)
1
and the control
loop should
be opened:
corresponding
markers
2544 to 2547 must be set
markers
2F!44 t!i
Control
loop should
be closed again' reset corresponding
C 2.2.14)
Markers
for transfer
of actual position
values as nominal
values (Teach-in)
Marker
No.
Function
Signal direction
2552
Teach-in
for position
loop X-axis
PL.C t
NC
2553
Teach-in
for position
loop Y-axis
2554
Teach-in
for position
loop Z-axis
2555
Teach-in
for position
loop IV-axis
If the appropriate
markers
2552 to 2555 are set to logic "I",
the momentary
position
value is transformed
into
a nominal
value.
Note:
Teach-in,
is only possible
in the manual operating
mode.
39
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