Parametrization as BiSS-C master

• BiSS-C mode (0x80p8:18)
• In the object 0x80p8:18 Mode: BiSS-C (0x00) need to be selected.
• CRC polynomial (0x80p8:11)
• The transmission of the data is CRC-secured. The counter polynomial for CRC determination is slave specific. Is the CRC transmitted inverted, the 0x80p8:03 “CRC invert” need to be set to TRUE.
• Clock frequency (0x80p8:13)
• Clock rate, limitations by the max. cable length need to be considered. A runtime compensation for the clock and data line is implemented, therefore the use of long cables and high data rates is possible (max. 10 MHz).
• Multiturn [Bit] (0x80p8:15)
• Number of multiturn bits provided by the slave. If only singleturn bits are provided (e. g. linear encoder) the value can be set to 0.
• Singleturn [Bit] (0x80p8:16)
• Number of singleturn bits provided by the slave.
• Offset LSB Bit [Bit] (0x80p8:17)
• Right aligned offset bits (null bits) can be set, if available (slave specific). The position data is shifted by the number of the offset bits.

Note about the counter polynomial The counter polynomial for the CRC determination is manufacturer-specific. Common values are 0x43hex (67dec) or 0x97hex (151dec). This value can be entered directly in the object 0x80p8:11. The calculation of the polynomial and the cyclical data check between master and slave are carried out automatically.

The BiSS-C frame structure is following: