[krzysiek80r]

Hi Node,

How would you operate among the below codes? so basically when there are multiple codes for the same message.

CC-ID 253
Parking Brake Failed
CC-ID 239
Parking Brake Failed
CC-ID 240
Parking Brake Failed
CC-ID 241
Parking Brake Failed
CC-ID 242
Parking Brake Failed
CC-ID 243
Parking Brake Failed

For all listed ccid the group is the same cc_aktivierung_4

cc-id 253 7 byte -32
cc-id 239 5 byte -128
cc-id 240 6 byte -1
cc-id 241 6 byte -2
cc-id 242 6 byte -4
cc-id 243 6 byte -8

I think that with the 6th byte, 
if you give:
-3 will turn off 240 and 241, 
-6 will turn off 241 and 242, 
-7 will turn off 240, 241 and 242, 
etc. etc.

[kklobo]

someone asking for this If You dont now which exactly error You have on dash is easy to check in ista after reading errors dont go to test plan just double click on error and it is on the bottom of description

[tonemoz]

Can a similar logic be applied to e-series kombi? I'm looking to remove id-56 in nettodata.

[Semi14]

IMHO general idea is that there is 1 bit for each CC-ID and all of them are sequential.

AFAIK SOS failure is CC-ID 299.

Each group has 8 bytes so 64 (= 8 * 8) bits total.

299 / 64 = 4.xxx so it's 5th group (as groups are counted from 1: 4 + 1 = 5).

299 - 64 * 4 = 43 so it's 43rd bit in 5th group.

43 / 8 = 5.xxx so it's 5th byte (as bytes are counted from 0: 5 + 0 = 5).

43 - 5 * 8 = 3 so it's 3rd bit (as bits are also counted from 0)

3rd bit has value of 8 (= 2 ^ 3) so FF - 8 = F7. Well, to be more precise - works when bit WAS SET ONLY. Normally you would do NOT-AND operation which works always. So initial value FF & (~8). ~8 = F7. FF & F7 = F7.

ELEMENTARY!!!

Hi

And how to calculate the smaller number: CC ID-18 - Bonnet Open ??


Because I'm getting some nonsense in the calculations

Gretings

[Node]

Why nonsense??? You will just get some zeros.

[Semi14]

Why nonsense??? You will just get some zeros.

18 / 64 = 0,28 = Group 1

18 -  64 * 1 = -56  
-56 / 8 = -7  
-56 - 7 * 8 = 0


Group 1  Bit 0 :


FE FF FF FF FF FF FF FF


Did I calculate correctly??

[Node]

Why nonsense??? You will just get some zeros.

18 -  64 * 1 = -56  

Did I calculate correctly??

NO. Why * 1???

[Semi14]

Why nonsense??? You will just get some zeros.

18 -  64 * 1 = -56  

Did I calculate correctly??

NO. Why * 1???

My mistake

18 / 64 = 0,28 = Group 1

18 -  64 * 0 = 18  
18 / 8 = 2,25  
18 - 2 * 8 = 2


FF - 2^2 = FB


Group 1 Bit 2

[Node]

Why nonsense??? You will just get some zeros.

18 -  64 * 1 = -56  

Did I calculate correctly??

NO. Why * 1???

My mistake

18 / 64 = 0,28 = Group 1

18 -  64 * 0 = 18  
18 / 8 = 2,25  
18 - 2 * 8 = 2


FF - 2^2 = FB


Group 1 Bit 2

Forgot byte 2

[choudean]

hi,

what would the value be if the 5th bit has value of 32 (= 2 ^ 5)?