7 Functional Description of the Fieldbus Modules
7-30
Static characteristics of CAN signals (compatible with ISO/DIS 11898)
Output driver: Short-circuit proof, protected against ESD, 2000 V
(human body model)
Output voltage CAN+ 2.75 ... 4.5 V
Output voltage CAN- 0.5 ... 2.25 V
Bus state, recessive < 0.5 V, differential (CAN+ to CAN-)
Bus state, dominant > 0.9 V, differential (CAN+ to CAN-)
Max. output current 100 mA (short-circuit)
Min. load impedance 45 ohms
Max. number of nodes 32
Max. perm. cable length 500 m ( observe configured transmission rate)
Dynamic characteristics
Transmission rate 1 Mbauds with a max. total bus length of 40 m
(configurable) 500 Kbauds with a max. total bus length of 80 m
100 Kbauds with a max. total bus length of 500 m
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