BiSS interface

Application

• Position sensor system
• * Rotary encoder
• * Linear position sensors
• Drive control
• Intelligent sensor system
• Robotics

  BiSS features

• Open source
• Hardware compatible for SSI standard
• Cyclic reading of sensor data up to 64 bit per slave
• Transmission of status data, parameter, measured temperature value, configuration description, etc.
• Isochronal, real time capable data transmission
• bidirectional communication with two unidirectional lines
• Point-to-point or multi-slave networks
• Maximum user data rate, transmission data depending on driver and line of e.g. RS422: 10 MHz, 1 km; LVDS: 100 Mbit/s
• Independent of the applied physical layer
• CRC secured communication

  Characteristics of BiSS C

• Continuous sensor data transmission without interruption while using control data
• Activation of actuators in bus during sensor data transmission
• Broader standardization through BiSS profiles, BiSS EDS, BiSS USER DATA, etc.
• Full compatibility of BiSS identifier

  History of BiSS in position sensor system

• BiSS was showcased in 2002 by its founders iC-Haus GmbH
• Since BiSS B is not motor feedback compatible, BiSS C has been preferred in the market
• All patent cases against BiSS B were dropped in 2012:
• * EP 0790489B1: "Mode switching by frequency comparison"
• * DE 19701310B4: "Mode switching as such"
• * EP 1168120B1: "Block transmission of additional uncritical data"
• Multi-cycle data are no longer utilized in the position sensor system with BiSS
• Because BiSS utilizes the PHY of SSI , it develops as the successor of the SSI interface in automation