BiSS interface

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The BiSS Interface is an open interface that was developed by iC-Haus . The name stands for "bidirectional / serial / synchronous". The BiSS interface is based on a network protocol to implement a real-time interface for digital, serial and secure communication between a controller and sensors and actuators . The BiSS protocol is designed in the variants B and C mode (Continuous Mode) for industrial applications in which transmission speeds, safety, flexibility and a minimal implementation effort are required.

Applications

Features of BiSS

  • Open source
  • Hardware-compatible with the SSI standard ( Synchronous Serial Interface )
  • Cyclic reading of sensor data up to 64 bits per slave
  • Transfer of status data, parameters, temperature measurement values, configuration descriptions, etc.
  • Isochronous , real-time data transmission
  • bidirectional communication with two unidirectional lines
  • Point-to-point or multi-slave networks
  • Maximum user data rate, driver and line-dependent transmission values ​​of e.g. B. 10 MHz, 1 km, LVDS 100 Mbit / s,
  • regardless of the physical layer used .
  • CRC -secured communication (sensor data and control data saved separately)

Special features of BiSS C

  • Continuous sensor data transmission without interruption when using the control data
  • Control of actuators in the bus during the sensor data transfer
  • Broader standardization through BiSS Profiles, BiSS EDS ( Electronic Data Sheet ), BiSS USER DATA etc.
  • Full compatibility of the BiSS identifier (already defined for BiSS B)

Developments at BiSS in position sensors

  • BiSS was presented to the public in 2002
  • Since BiSS B is not capable of motor feedback, BiSS C was preferred by the market
  • All patent lawsuits 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 (MCD) are no longer used in position sensors with BiSS
  • Since BiSS uses the PHY from SSI (RS422), BiSS is developing as the successor to the SSI interface in automation
  • BiSS Line for single-cable applications was presented in 11/2016 at the SPS Nuremberg
  • Establishment of the BiSS Association eV on September 28, 2017

BiSS Association e. V.

On September 28, 2017, 11 members founded the BiSS Association. The successful technical implementation of BiSS Line was decisive in setting up an independent user organization with an internet platform on which providers with BiSS solutions can present and exchange ideas. The founding members include well-known BiSS users for sensors, encoders and drives. At the SPS-IPC-DRIVES-Drives trade fair 2017 in Nuremberg, the BiSS Association will present itself on the stands of the participants.

Founding members:

Web links

Individual evidence

  1. ↑ Posital is a founding member of the BiSS Association eV , md-automation.de, October 12, 2017, accessed on November 20, 2017.
  2. ↑ Andreas Knoll: BiSS open source sensor interface: Users found the BiSS Association as a user organization . ( elektroniknet.de [accessed November 25, 2017]).