GEMAC Aca­de­my: CAN bus basics 

CAN (Con­trol­ler Area Net­work) is a stan­dar­di­zed bus sys­tem that enables the com­mu­ni­ca­ti­on bet­ween elec­tro­nic con­trol units.

CAN bus sys­tems func­tion like the ner­vous sys­tem in the human body. Just as the cen­tral ner­vous sys­tem con­nects the parts of the body, in a mobi­le machi­ne the CAN bus con­nects the con­trol units. Through this wiring, all com­pon­ents are thus lin­ked via a com­mon data network.

Learn more about

  • the opti­mal struc­tu­re of a CAN bus,
  • under­stand bus phy­sics and
  • you will recei­ve tips for suc­cessful troubleshooting.
GEMAC Academy: Grundlagen CAN-Bus
Regis­ter now
CAN in general
  1. Histo­ry of CAN
  2. Are­as of appli­ca­ti­on today
  3. Advan­ta­ges over other bus systems
  4. OSI lay­er model
  5. Hig­her lay­er Bus sys­tems
  6. Bus sys­tem CANopen
  7. Bus sys­tem DeviceNet
  8. Bus sys­tem SAE J1939
  9. Com­mu­ni­ca­ti­on types
Phy­si­cal layer
  1. Wiring struc­tu­re
  2. Why twist?
  3. Cable qua­li­ty
  4. Impe­dance
  5. Equi­va­lent cir­cuit dia­gram of a line
  6. Wave pro­pa­ga­ti­on, reflection
  7. Con­nec­tors
  8. Per­mit­ted topologies
  9. Sym­me­tri­cal signal transmission
  10. Struc­tu­re of a CAN transceiver
  11. Com­mon Mode
  12. Shield vol­ta­ge
  13. Signal qua­li­ty
  14. Short cir­cuits
CAN-Pro­to­col
  1. Basic struc­tu­re of a CAN telegram
  2. Prio­ri­tiza­ti­on of messages
  3. Exten­ded Frames
  4. Bit Stuffing
  5. Tele­gram types
  6. Error-Frame coun­ter
  7. Maxi­mum bus load
Bit timing

Your cont­act for fur­ther questions:

Mr. Ralf Mei­sch­ner /​Sup­port Fieldbus

Pho­ne: +49 371 3377 – 170

Email: meischner@​gemac-​chemnitz.​de