The open source BiSS interface (bidirectional/serial/synchronous) is based on a protocol which implements a real time

interface Interface or interfacing may refer to: Academic journals * ''Interface'' (journal), by the Electrochemical Society * '' Interface, Journal of Applied Linguistics'', now merged with ''ITL International Journal of Applied Linguistics'' * '' Int ...

. It enables a secure serial digital communication between

controller Controller may refer to: Occupations * Controller or financial controller, or in government accounting comptroller, a senior accounting position * Controller, someone who performs agent handling in espionage * Air traffic controller, a person ...

, sensor and actuator. The BiSS protocol is designed in B mode and C mode (continuous mode). It is used in industrial applications which require transfer rates, safety, flexibility and a minimized implementation effort. The BiSS interface has roots in SSI and a simplified INTERBUS. The proprietary standards, Hiperface and EnDat are competing solutions.

Application

* Position sensor system **

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(

absolute encoder A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to analog or digital output signals. There are two main types of rotary encoder: absolute and increm ...

) ** Linear position sensors (

) * Drive control (motor feedback) * Intelligent sensor system (smart sensors) *

Robotics Robotics is an interdisciplinary branch of computer science and engineering. Robotics involves design, construction, operation, and use of robots. The goal of robotics is to design machines that can help and assist humans. Robotics integrate ...

BiSS features

* Open source * Hardware compatible for SSI standard (synchronous serial interface) * 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 Network, networking and networked may refer to: Science and technology * Network theory, the study of graphs as a representation of relations between discrete objects * Network science, an academic field that studies complex networks Mathematics ...

* Maximum user data rate, transmission data depending on driver and line of e.g.

RS-422 RS-422, also known as TIA/EIA-422, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit. It was meant to be the foundation of a suite of standards that ...

: 10 MHz, 1 km;

LVDS Low-voltage differential signaling (LVDS), also known as TIA/EIA-644, is a technical standard that specifies electrical characteristics of a differential, serial signaling standard. LVDS operates at low power and can run at very high speeds ...

: 100 Mbit/s * Independent of the applied physical layer * CRC secured communication (sensor data and control data secured separately)

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 (electronic data sheet), BiSS USER DATA, etc. * Full compatibility of BiSS identifier (already defined in BiSS B)

History of BiSS in position sensor system

* BiSS was showcased in 2002 by its founders iC-Haus GmbHhttp://www.ichaus.de/product/BiSS%20Interface. iC-Haus GmbH. "BiSS Interface Protocol Description". Retrieved 2013-7-25. * 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 (MCD) are no longer utilized in the position sensor system with BiSS * Because BiSS utilizes the

PHY PHY is an abbreviation for the physical layer of the OSI model and refers to the circuitry required to implement physical layer functions. PHY or Phy may also refer to: * Phy, the drug methadone * Phetchabun Airport (IATA code), Thailand See ...

of SSI RS-422) it develops as the successor of the SSI interface in automation

References

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External links

BiSS Interface Website

BiSS C Protocol Description (English)
Communications protocols