Lika AMM5A / BG1 Series, User Manual

Page: 43 / 56

AMM5A & AMM5B • SSI, BiSS, & RS-485
7.4 Data Field
Data Field DF is related to Control Field CF, for a correct Data ID see the “7.3.1
Control Field” section on page 42.
Data
ID
DF0 DF1 DF2 DF3 DF4 DF5 DF6 DF7
Data ID
0
ABS0 ABS1 ABS2
Data ID
1
ABM0 ABM1 ABM2
Data ID
2
ENID
Data ID
3
ABS0 ABS1 ABS2 ENID ABM0 ABM1 ABM2 ALMC
Data ID
7
ABS0 ABS1 ABS2
Data ID
8
ABS0 ABS1 ABS2
Data ID
C
ABS0 ABS1 ABS2
Blank field means that no byte is transmitted.
Position is transmitted from LS byte to MS byte in binary output code.
High bits that are not used have fixed value = “0”.
ABS: absolute value data within singleturn information, ABS0 is the low byte,
ABS2 is the high byte.
ABM: multiturn data, ABM0 is the low byte, ABM2 is the high byte.
ENID: encoder ID, fixed value = 23h
ALMC: encoder error, see the ALMC table below
ALMC byte (the bit is high = “1” upon error occurrence):
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Battery
alarm
BATT
MT
error
MTERR
PS error
PSERR
Fixed to
“0”
Fixed to
“0”
ST error
STERR
BUSY
flag
BUSY
Fixed to
“0”
See the next “7.4.1 Encoder errors” section.
MAN AMM5A_B SSI_BiSS_RS485 E 1.9.odt 7 – RS-485 serial interface 43 of 56