Lika AMM80, User Manual

Page: 49 / 60

AMM80 • SSI, BiSS, & RS-485
Singleturn encoder position:
DF0: LS byte
DF2: MS byte
position = (DF2 << 16) + (DF1 << 8) + DF0;
with 23 bit resolution:
23 Bit 22 ... 0
0 singleturn encoder position
with 20 bit resolution:
23 22 21 20 Bit 19 ... 0
0 0 0 0 singleturn encoder position
with 17 bit resolution:
23 22 21 20 19 18 17 Bit 16 ... 0
0 0 0 0 0 0 0 singleturn encoder position
7.5 Address Field and EEPROM Data Field
Address field:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
ADD6 ADD5 ADD4 ADD3 ADD2 ADD1 ADD0
MEM
BUSY
ADD6 … ADD0: EEPROM address
MEM BUSY status: access status to EEPROM can be judged by MEM BUSY
status. The relationship between MEM BUSY status and
the transmission data from the encoder is referred to next
table;
from Master to encoder
MEM BUSY
must be “0”.
Encoder transmission data
Description
MEM BUSY ADF EDF
Reading
0
ADF of
request
EEPROM
normal data
Reading is normally
executed
1
ADF of
request
00h
Writing is being executed
Request for reading is
invalid
Writing
0
ADF of
request
EDF of
request
Request for writing is
received
1 ADF of 00h Writing is being executed
MAN AMM80 SSI_BiSS_RS485 E 1.5.odt 7 – RS-485 serial interface 49 of 60