Balluff BML-M0 Série Notice D'utilisation page 34

BML-M0 _ -... / BML T _ _ -...
Magnetic Tape – Magnetic Encoder System
3
Construction and function (continued)
3.4.2 Reference points
Magnetic tapes are available for various referent point
functions.
Order positions L1, L2, L3 are defined in the
type code (see section 7).
Pole-periodic magnetic tape
For sensor heads with pol-periodic reference point function
an incremental tape without reference points is used (see
Fig. 3-3).
Magnetic tape with single reference point
L2
jjwwDE
Reference point 1
Fig. 3-5: Single reference point magnetic tape, single reference
point, optically marked
Magnetic tape with two reference points
L2
jjwwDE
Reference point 1
Fig. 3-6: Magnetic tape with two reference points
Magnetic tape with fixed-periodic reference points
L2 L3 L3
jjwwDE
Fig. 3-7: Magnetic tape with fixed-periodic reference points
8 english
L1
Code
L1
L3
Code
Reference point 2
L1
...
L3 L3 L3
Code
Reference
point type
Pole-periodic BML-M0...-R0000
BML T_ _-I...-1...
Single BML-M0...-RXXXX /0000
BML T_ _-I_ _ R-_ _ _ _-_ _ _ _ _-XXXX
reference
point
Two reference BML-M0...-DXXXX /YYYY
points BML T_ _-I_ _ D-_ _ _ _-_ _ _ _ _-XXXX-YYYY
Fixed- BML-M0...-CXXXX /YYYY
periodic BML T_ _-I_ _ C-_ _ _ _-_ _ _ _ _-XXXX-YYYY
reference
points
1) XXXX = L2 and YYYY = L3
Tab. 3-2: Tapes for reference point function
Type code
1)
1)
1)
1)
1)