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SSI format
6 SSI format
6.1 Multi-turn
Bit 0-11
MSB
MT, 12 Bit
Multi-turn
resolution
2
Both measuring system channels use the same SSI data format.
6.2 Single-turn
Bit 0-12
MSB
ST, 13 Bit
Single-turn
resolution
Both measuring system channels use the same SSI data format.
6.3 Sign of life counter
The 5-Bit sign of life counter is incremented based on the scanning procedures and is
inserted into the SSI telegram.
40
Bit 12-24
ST, 13 Bit
Single-turn
resolution
24
13
12
0
-2
2
-2
Bit 13-16
4 Bit
Place holder
12
0
3
0
2
-2
2
-2
INFORMATION
The sign of life counter is increased when the control system
has fetched the current position values and, internally, new
position values have been generated and provided. In other
words, if the sign of life counter has been incremented in
relation to the previous telegram, this guarantees that the
current data transmitted originates from a new position
scanning operation.
Bit 25-39
Err1, 1Bit
Err2, 1 Bit
Error bit
Error bit
Measuring
Measuring
channel 1
channel 2
0
0
2
2
Bit 17
Bit 18
Err1, 1Bit
Err2, 1 Bit
Error bit
Error bit
Measuring
Meausuring
channel 1
channel 2
0
0
2
2
LSB
SoL, 5 Bit
8 Bit
Sign of life
Reserved
counter
4
0
7
0
2
-2
2
-2
Bit 19-23
Bit 24-31
LSB
LZZ, 5 Bit
8 Bit
Sign of life
Reserved
counter
4
0
7
0
2
-2
2
-2
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