Pilz PSEN enc s2 eCAM - Manual (Page 42)

SSI format
40
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland
Telefon +49 711 3409-0, Telefax +49 711 3409-133, E-Mail: [email protected]
English
6 SSI format
6.1 Multi-turn
Bit 0-11 Bit 12-24 Bit 25-39
MSB LSB
MT, 12 Bit ST, 13 Bit Err1, 1Bit Err2, 1 Bit SoL, 5 Bit 8 Bit
Multi-turn
resolution
Single-turn
resolution
Error bit
Measuring
channel 1
Error bit
Measuring
channel 2
Sign of life
counter
Reserved
2 24 -2 13 2 12 -2 0 2 0 2 0 2 4 -2 0 2 7 -2 0
Both measuring system channels use the same SSI data format.
6.2 Single-turn
Bit 0-12 Bit 13-16 Bit 17 Bit 18 Bit 19-23 Bit 24-31
MSB LSB
ST, 13 Bit 4 Bit Err1, 1Bit Err2, 1 Bit LZZ, 5 Bit 8 Bit
Single-turn
resolution
Place holder
Error bit
Measuring
channel 1
Error bit
Meausuring
channel 2
Sign of life
counter
Reserved
2 12 -2 0 2 3 -2 0 2 0 2 0 2 4 -2 0 2 7 -2 0
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.
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.