. , ( 2.4.1). : , , .
() , , .
, , . . , .
2.4.1 : 1 - ; 2 - ; 3, 4, 5 - ; 6 - ; 7, 8, 9, 10 - . |
, 50 - 100 . , - , . .
, , , , , , -30, -40, -60, , .
, .
CAN.
CAN (Controller Area Network) 80- Bosch , .
CAN , CAN , . CAN- ISO 11898.
CAN - , .
.
( - 8 ) (), .
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CAN . ( + RTR-), .
CAN , , / .
CAN , .
CAN ( 3.2.1).
3.2.1 CAN |
. CAN , , (CPU).
CAN , - CAN_H (can-high) CAN_L (can-low), .
CAN .
- , - . CAN.
CAN . CAN (Identification field + RTR) . , ( , , ). .
, , (HLP - Higher Layer Protocols). HLP , CAN ISO/OSI, HLP.
CAN OSI ( 3.2.2).
3.2.2 CAN OSI |
(Physical Layer) CAN , .. CAN (ISO 11898, ISO 11519, SAE J2411).
CAN ISO 11898. ISO 11898 ( - ) 120 ( 108 132 .
CAN - CAN - (transceivers), TTL CAN- CAN. CAN - - Philips 82C250, ISO 11898.
CAN 1 Mbit/s. 1 Mbit/s 40 . ( , .