Robert Bosch Pty Ltd VIMA01 Benutzerhandbuch
PROTOCOL SPECIFICATION
F005VP0801
ROBERT BOSCH
(AUSTRALIA) PTY. LTD.
A.B.N. 48 004 315 628
SMARTRA III IMMOBILISER
Page 7 of 49
Issue Number:
1.0
Dev No.
3881
Valid from:
14/2/06
Print Date:
28 March, 2007
© THIS DRAWING IS THE EXCLUSIVE PROPERTY OF ROBERT BOSCH (AUSTRALIA) PTY. LTD. WITHOUT THEIR CONSENT IT MAY NOT BE REPRODUCED OR GIVEN TO THIRD PARTIES.
DEV04205.9/I-1
3.2 EMS to Smartra Communications Description (OSI model):
The communications between the EMS and the Smartra can be better described using the 7 layer OSI
model. The below diagram shows different levels of the interface in reference to the OSI model. It
describes the Physical layer the Data Link Layer and the Application Layer.
model. The below diagram shows different levels of the interface in reference to the OSI model. It
describes the Physical layer the Data Link Layer and the Application Layer.
3.2.1 Diagram: OSI model
Physical
Layer
Dedicated single wire between Immobiliser and Control Unit.
Bi-directional Asynchronous Communications @ 4800 baud
Logic Low = 0V, Logic High = 12V, Idle State High
Bi-directional Asynchronous Communications @ 4800 baud
Logic Low = 0V, Logic High = 12V, Idle State High
Data Link
Layer
The protocol betw een the Control Unit (CU) and the SMARTRA is defined as :-
The protocol betw een the SMARTRA and the CU is defined as :-
1 start bit-low , 8 data bits, no parity, 2 stop bits-high.
Address
Lengt h
Action
Dat a
CS
Address
Lengt h
Dat a
CS
Network
Layer
EMS Action Messages:
06h (ACK) Acknow ledge
53h (ASCII 'S') Softw are version
4Bh (ASCII 'K') Transponder IDE *
41h (ASCII 'A') Transponder Authentication (Additional info for ID Matching)
57h (ASCII 'W') Transponder Write EEPROM page
52H (ASCII 'R') Transponder Read EEPROM page
4Eh (ASCII ‘N’) Neutralise a Taught Smartra **
54h (ASCII ‘T’) Teach Smartra **
15h (ASCII nak) Negative response *
53h (ASCII 'S') Softw are version
4Bh (ASCII 'K') Transponder IDE *
41h (ASCII 'A') Transponder Authentication (Additional info for ID Matching)
57h (ASCII 'W') Transponder Write EEPROM page
52H (ASCII 'R') Transponder Read EEPROM page
4Eh (ASCII ‘N’) Neutralise a Taught Smartra **
54h (ASCII ‘T’) Teach Smartra **
15h (ASCII nak) Negative response *
For every message sent to the SMARTRA from the CU there w ill be a response from the
SMARTRA unit. Only one command can be sent at a time to the SMARTRA unit.
SMARTRA unit. Only one command can be sent at a time to the SMARTRA unit.
A negative response to any command is possible.
* - modified message
** - new message
* - modified message
** - new message
Transport
Layer
Session
Layer
Presentation
Layer
Application
Layer
Idle
St art
Bit 1
bit
Data
8 bit s
St op bit
2 bits
Idle