mOByDiC 2600 plus version 1.00 released 11.11.2004
2600 multiprotocol EOBD Interface • • • • •
Yellow LED Tx/Rx
ıso9141-2 kwp2000 j1850 – pwm j1850 vpwm CAN bus
Green LED ( mobydic connected to ECU )
mOByDic2600/2600i quick reference
1.) To connect the mobydic to a PC please use 1:1 DSUB9/F DSUB9/M cable 2.) For the OBD connection use a standard OBDII/DSUB9 cable as described on the next page. 3.) The yellow LED indicates OBD Bus activity evertime a message exchange occurs between ECU and mobydic . The green LED is ON once a connection is etablished to ECU.
1
mOByDiC 2600 plus version 1.00 released 11.11.2004
4.) At power on an auto search for a valid protocol is running. The mobydic searchs 3 times for each protocol. It takes a few second till all protocols are tried out. During this procedure mobydic doesn’t respond to any request from PC. If no protocol is found blinks the yellow LED with an interval of 3 sec. This means the car is not OBD compliant. 5.) Once the Green LED is ON you can start an of our programs ( MCI , scanmaster or lite ). If no protocol is found , those programs don’t work correctly
2
mOByDiC 2600 plus version 1.00 released 11.11.2004
Schematic VCC VCC D1 U4
16 13 8
P1 1 6 2 7 3 8 4 9 5
11 10
C1 10uF
T1IN T2IN
T1OUT T2OUT
U1
12 9
13 14 10 11
14 7
1 3 4 5 2 6
+
+ C2 10uF
DB9
VC R1IN R1OUT R2INC R2OUT
+ C3 10uF
+
VCC
C1+ C1C2+ C2- GN V+ D VMAX232 15 RXCAN TXCAN C4 10uF
it is recommended to use a brown out device ( e.g TL7705 from TI ). the both LEDs are low current If < 5 mA. close jumper to download a new release. Don’t change the value of crystal. LED yellow indicates everytime a frame exchange occurs. LED green is on if a valid protocol is found.
3
mOByDiC 2600 plus version 1.00 released 11.11.2004 8V
VCC
8V
VBAT
1k1
3k JP2
8 3 +
TXVPWM
LM393 1
2 -
2N3906
4
3k9
4k7
1N4148
2 4 6 8 10 12 14 16
1 3 5 7 9 11 13 15
OBD CONNECTOR LM393 7
-
RXVPWM
6
10k
5
10k
+
VBAT
GND
LM7805C/TO220 3 1 OUT IN
VCC
100nF
2
100nF
1N4001
U6 GND
LM7808/TO220 3 1 OUT IN
8V
2
100nF
typical J1850-VPWM to RS232 interface
4
mOByDiC 2600 plus version 1.00 released 11.11.2004 VCC R3 4K7
VCC Q1 2N3906
TXPWM(+)
VBAT
R7 10K
8 +
1
RXPWM
4
-
2 4 6 8 10 12 14 16
R9 10K
D4
1N4148
JP2
3
1 3 5 7 9 11 13 15
OBD CONNECTOR
2
U2A LM393
R10 10K
R4 4K7
Q2 2N3904
TXPWM(-)
R8 10K
OBD to j1850 PWM interface
VBAT
510
VBAT 2N2222 510
2N2222
2 4 6 8 10 12 14 16
OBD CONNECTOR
VBAT
4K7
1 3 5 7 9 11 13 15
VBAT
8
TXL TXK 4K7
1
4
RXK
+
3
10K
10K
2
LM393
10K
OBD to ISO interface
5
mOByDiC 2600 plus version 1.00 released 11.11.2004 VCC
1 4 5
TXD CAN_H RXD CAN_L REF
PCA82C251
7 6
100 2
TXCAN RXCAN
-VCC GND
3
2 4 6 8 10 12 14 16
470Pf
1 3 5 7 9 11 13 15
OBD CONN. 100 470Pf
OBD to CAN interface
6
mOByDiC 2600 plus version 1.00 released 11.11.2004
PC Serial Port Parameters The Rs232 parameters are : 9600 Baud , 8 bits , no parity. The PC is Master and the Adapter is slave. Software There are 2 types of commands for communication with the interface adapter. High Level Commands When sending to the adapter the service Nr. and the PID a response of 7 data bytes as specified in ISO 15031-5 is received. For exemple: • • • •
service 3 and no pid to get the stored error codes. gets the freeze frame stored in ECU. clears the DTC stored. gets the PID supported and gets the coolant temperatur in 1.Byte in response Bytes.
Low Level Commands In this mode the adapter can speak to ECU directly. We must first request the found protocol. For J1850-VPWM to speak to ECU for exemple we send to mobydic . thE CRC is calculated by adapter. As a response we obtain ( for service 1)
7
mOByDiC 2600 plus version 1.00 released 11.11.2004
Software driver The Host software must wait at power on until a valid protocol is found. It is normally max 6 sec. The protocol can be requested with Command. 0x05. Is this number zero than is no protocol found. The host can search a valid protocol itself too. The Host must set a time out of 6 sec. for a response. The Fonction numbers are all decimal. But 0x30 means hexadecimal. The Mobydic has a timeout of 1000mS for a incoming Message.The unused commands return • • •
first let the mOByDic search a valid protocol with default parameters use set header command to set the different ECU address generic command is only used when the mOByDic finds a valid protocol at power on.
8
mOByDiC 2600 plus version 1.00 released 11.11.2004
Commande Fonction Request Pos. Response Neg. Response
00 Reserved for system N/A N/A
Commande Fonction Request Pos. Response
02 OBDII/EOBD generic commands 02 THEN SEND
MODE MODE MODE MODE MODE MODE MODE MODE MODE
1 2 3 4 5 6 7 8 9
Pos response
Neg. Response
N/A
Commande Fonction Request Pos. Response
03 Read serial number of mOByDic 03 03 HB LB HB = high byte of serial number LB = low byte of serial number N/A
Neg. Response
9
mOByDiC 2600 plus version 1.00 released 11.11.2004
Commande Fonction Request Pos. Response Neg. Response
Commande Fonction Request Pos. Response
04 Read version of mOByDic 04 04 HB LB HB = high byte version LB = low byte of version N/A
05 Read found protocol 05 05 HB LB HB = high byte of protocol LB = low byte of protocol 0x0000 0x0001 0x0002 0x0004 0x0008 0x0010 0x0020 0x0040 0x0080 0x0100 0x0200 0x0400 0x0800 0x1000
: : : : : : : : : : : : : :
no protocol ISO9141-2 keywords 08 08 ISO9141-2 keywords 94 94 KWP2000 slow init KWP2000 fast init J1850 PWM J1850 VPWM CAN 11 ident 250 KB CAN 11 ident 500 KB CAN 29 ident 250 KB CAN 29 ident 500 KB Reserved SAE J1939 Reserved KW1281 / KW71 Reserved KW82
Neg. Response
N/A
Commande Fonction Request Pos. Response
06 Read chip ident of mOByDic 06 06 HB LB HB = high byte of chip ident LB = low byte of chip ident 2600 = OE90C2600
Neg. Response
10
N/A
mOByDiC 2600 plus version 1.00 released 11.11.2004
Commande Fonction Request Pos. Response
07 Connect to ECU 07 07 HB LB HB = high byte of found protocol LB = low byte of found protocol
Neg. Response
N/A
Commande Fonction Request Pos. Response
08 Disconnect 08 08 HB LB HB = high byte of the disconnected protocol LB = low byte of the disconnected protocol ISO and KWP2000 needs yet 5 sec to disconnect
Neg. Response
N/A
Commande Fonction Request Pos. Response
09 Get found keywords 09 09 KW1 KW2 this command returns the ISO/KWP read keywords
Neg. Response
N/A
Commande Fonction Request Pos. Response
10 K-Line monitoring 10 mOByDic send continous data This command is inactive once after Reset
Neg. Response
11
N/A
mOByDiC 2600 plus version 1.00 released 11.11.2004
Commande Fonction Request Pos. Response
12 Send direct data to ECU 12
ISO9141-2
send receive
Neg. Response
N/A
Commande Fonction Request
13 Send direct data to ECU 13
Pos. Response
KWP2000
send receive
Neg. Response
N/A
Commande Fonction Request
18 KWP2000 fast user init 18
Pos. Response
send receive
Neg. Response
12
N/A
mOByDiC 2600 plus version 1.00 released 11.11.2004
Commande Fonction Request Pos. Response
19 Stop auto keep alive 19 send
,
keepISO = 0 keepISO = 1 keepKWP = 0 keepKWP = 1
stop iso keep alive start ISO keep alive stop KWP keep alive start KWP keep alive
receive Neg. Response
N/A
Commande Fonction Request
24 Send direct data to ECU 24
Pos. Response
J1850 PWM
send receive
Neg. Response
N/A
Commande Fonction Request
25 Send direct data to ECU 25
Pos. Response
J1850 VPWM
send receive
Neg. Response
13
N/A
mOByDiC 2600 plus version 1.00 released 11.11.2004
Commande Fonction Request Pos. Response
33 Send direct data to ECU 33
CAN 11/250
send receive
Neg. Response
N/A
Commande Fonction Request
34 Send direct data to ECU 34
Pos. Response
CAN 11/500
send receive
Neg. Response
N/A
Commande Fonction Request
35 Send direct data to ECU 35
Pos. Response
CAN 29/250
send receive
Neg. Response
14
N/A
mOByDiC 2600 plus version 1.00 released 11.11.2004
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