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 19 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
5. MESSAGE FLOW BETWEEN EMS, SMARTRA AND TRANSPONDER
5.1 Background
The message flow between the Smartra and the EMS is described in the following section. The Smartra
is event driven ie. the EMS sends a message, the Smartra response will be sent back to the EMS.
Components missing in system:
is event driven ie. the EMS sends a message, the Smartra response will be sent back to the EMS.
Components missing in system:
If no EMS is present then the Smartra does nothing.
If no Smartra is present the EMS will timeout on the ACK request message.
If no transponder is present the Smartra will send a NAK to the EMS (No transponder).
If no Smartra is present the EMS will timeout on the ACK request message.
If no transponder is present the Smartra will send a NAK to the EMS (No transponder).
5.1.1 Starting Communications
The communications start with Ignition switch ON or Key Teaching Mode(14h) and ignition switch ON.
5.1.2 Stopping Communications
The communications stop when:
• no response received from Smartra after EMS attempts to send a message to the Smartra
more than 3 times.
• communication error on Smartra when an EMC or checksum error occurs more than 3 times.
• Authentication is complete. Note in case of ignition off by key before authentication EMS
• Authentication is complete. Note in case of ignition off by key before authentication EMS
should not store error.
5.1.3 (Re)Teaching Mode
• EMS should not start communication request (06h/4Bh/…) after IGN ON by Next Key,
• and in case of sending Teaching messages(1Ch…1Eh) from Tester(HI-SCAN or GST) EMS
• and in case of sending Teaching messages(1Ch…1Eh) from Tester(HI-SCAN or GST) EMS
should start communication request (06h/4Bh/…).
5.1.3.1 Diagram: Explaining how to read message flow diagrams
IDE Request
Sm artra
EM S
Arrow Show s Dire ction
of m e s s age
0 x4 9 S 0 x4 B RN1..6
Trans ponde r
Solid Line s s how
m odule s that s e nd and
re ce ive data
M e s s age s tructure , data
that m ak e s m e s s age .
Ye llow = ne w m e s s age
Blue = e xis ting m e s s age
Re d = e rror m e s s age
Block indicate s s om e
proce s s ing at m odule
Re que s t
re s pons e pair,
groupe d to
m ak e re ading
e as ie r