Servo Frame Format - Fujitsu MPF3XXXAT Product Manual

4.7.3

Servo frame format

As the servo information, the drive uses the two-phase servo generated from the gray code and
Pos A to D. This servo information is used for positioning operation of radius direction and
position detection of circumstance direction.
The servo frame consists of 6 blocks; write/read recovery, servo mark, preamble, gray code,
Pos A to D and PAD. Figure 4.6 shows the servo frame format.
1.08 0.24
s
s
ASM
W/R Recovery Field
8.76 s
Servo
Frame
4 - 16
0.26 0.80
2.12 s
s s
SSM SCD
Preamble
DATA
115.7 s
Figure 4.6

Servo frame format

C141-E099-01EN
0.92 0.84 0.84
s s s
POS POS
POS
A B
C
Servo
DATA
Frame
0.84 0.78
s s
POS
PAD
D
DATA