Function library
7-39
L
EDSVS9332P-D21 EN 3.0
7.5.4 Measuring systems
Purpose
•
Limitation of the traversing and determination of reference points for positioning.
9300POS006
0
L i m i t p o s i t i o n
n e g a t i v e
L i m i t p o s i t i o n
p o s i t i v e
C 1 2 2 4
C 1 2 2 3
0
a c t . t a r g e t p o s i t i o n
C 1 2 2 0 / 1
H o m e
o s i t i o n
R e a l
m e a s u r i n g
s y s t e m
M a c h i n e
m e a s u r i n g
y s t e m
E n d o f t r a v e l s w i t c h
" P O S - L I M - P O S "
E n d o f t r a v e l s w i t c h
" P O S - L I M - N E G "
T r a v e r s i n g r a n g e
Fig. 7-17 Measuring systems for absolute positioning in default setting (C1225=0, C1227=0)
In default setting the reference point = machine zero = real zero
(E 7-39)
.
Reference point
•
The reference point is the reference for the “connection” of the measuring systems with the
machine.
•
Is detected through “referencing”.
Machine measuring system
•
The permissible travelling range for the machine measuring system is determined through the
position limit values (C1223 and C1224).
•
The machine measuring system has a fixed reference to the machine because of the reference
point.
•
The reference point is detected by a “reference run” or “setting reference” and, usually, not
shifted later.
(E 7-49)
.
Real measuring system
•
All indications (e.g.: target positions, position setpoint, and actual position) refer to the real
zero of the real measuring system.
•
The real measuring system can be shifted by entering a reference measuring offset.
To Next Page
Loading...
