iC-MN 25-BIT NONIUS ENCODER
WITH 3-CH. SAMPLING 13-BIT Sin/D INTERPOLATION
Rev D1, Page 26/59
OFC_M
OFC_S
OFC_N
Addr. 0x08; bit 0
Addr. 0x07; bit 7:0
Addr. 0x06; bit 7:6
Addr. 0x18; bit 0
Addr. 0x17; bit 7:0
Addr. 0x16; bit 7:6
Addr. 0x28; bit 0
Addr. 0x27; bit 7:0
Addr. 0x26; bit 7:6
OFC_x = OffsC_x*maxVOSC_x
OffsC_x = 0
Phase Correction
The phase between sine and cosine is calibrated by
PH_x (9:0). With a phase error of 2.5° or more the am-
plitude and offset must be readjusted for a track reso-
lution accuracy of 13 bits.
PH_M
PH_S
PH_N
Addr. 0x09; bit 2:0
Addr. 0x08; bit 7:1
Addr. 0x19; bit 2:0
Addr. 0x18; bit 7:1
Addr. 0x29; bit 2:0
Addr. 0x28; bit 7:1
Code
0x000
0x001
0x002
...
OffsC_x = -0.0009
OffsC_x = -0.0019
...
Code
0x000
0x001
...
Function
+ 0 °
0x3FF
0x400
0x401
0x402
...
OffsC_x = -1
+ 0.0204 °
...
OffsC_x = 0
OffsC_x = 0.0009
OffsC_x = 0.0019
...
0x1FF
0x200
0x201
...
+ 10.396 °
- 0 °
- 0.0204 °
...
0x7FF
OffsC_x = 1
0x3FF
- 10.396 °
Table 26: Offset voltage cosine
Table 27: Sine/cosine phase correction
ICHAUS [ IC-HAUS GMBH ]
