Lika AMM80, User Manual

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AMM80 • SSI, BiSS, & RS-485
To properly set the
Preset
value see the following example.
PRESET SETTING EXAMPLE
In the 20-bit resolution encoder (2
20
= 1,048,576 information), you want to set
the following
Preset
value = 1,000,003
10
= 0F4243h = 1111 0100 0010 0100
0011
2
.
1. As previously stated, first of all you must enable the setting of the
Preset
registers by entering the value “01” next to the
Preset setting enable
register.
2. Then enter the
Preset
value (1,000,003
10
= 1111 0100 0010 0100 0011
2
)
according to the structure explained above. Please note that you must enter
the value in the 20-bit long format (according to the encoder resolution), so
it is:
000000000000000011110100001001000011 in binary notation. See the
following table:
Byte 11 Byte 12 Byte 13 Byte 14 Byte 15
7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 23 22 21 20 19 18 17 16 31 30 29 28 27 26 25 24 39 38 37 36 35 34 33 32
0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 1
lsbit with 20-bit encoder
Byte 16 Byte 17
47 46 45 44 43 42 41 40 55 54 53 52 51 50 49 48
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
msbit with 20-bit encoder
3. It results that you must enter the following hexadecimal value:
Byte 11 Byte 12 Byte 13 Byte 14 Byte 15
0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 1
0 0 6 0 4 8 E 8 0 1
Byte 16 Byte 17
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0
4. Then, before saving the entered data, set the value “00” next to the Preset
setting enable register.
5. To save the new Preset value, you must use the
Save parameters
function
in the
Command
register (set “01” in the
Command
register).
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