ISO11992

[Jason Turner-2]

Hello everybody,

I am currently working on a project that involves using an ISO11992 bus
and the only transceiver I can find is the B10011S from Atmel.  Do any
of you know of any alternatives?  The standard defines ISO11992 as
having bus levels of 1/3 and 2/3 of the reference voltage, which is
generally assumed to be 24V (27V) resulting in bus levels of 18V / 9V;
however here in Australia this isn't always the case as we use European,
Japanese and North American trucks all who seem to their own thing
resulting in ISO11992 busses with 12V (14V) references and bus levels of
9V / 4.5V.  As you can imagine, this can cause all sorts of problems,
especially when there are a number of trucks with 12V power rails and
24V referenced ISO11992 lines!  So basically, I am after an ISO11992
compliant transceiver that will operate with a 12V reference, but will
also operate with a 24V reference, such that it could be used in both
situations where the reference voltage defines the bus levels (as per
the standard).  After reading through the datasheet, I believe that the
B10011S would be suitable for this, but I'm wondering if any of you have
had experience using this transceiver with a 12V reference?

Best Regards,

Jason Turner
Electronics Engineer
REDARC Technologies
--
Archives and useful links: http://groups.yahoo.com/group/CANbus
Subscribe and unsubscribe at www.vector-informatik.com/canlist/
Report any problems to <canlist-owner@...>

[Thilo Schumann-2]

Hi Jason,

as far as I know, there was a second transceiver chip around some while
ago. I do not know if it is still available.

But, I learned that you will find ISO11898 only in European trucks and
all they have 24V. Because it will be required by European law sometimes
around 2009. AFAIK, the US trucks are using J1939 or a variant of that.
I do not know about the Japanese trucks.

Greetings

Thilo

Jason Turner schrieb:

> Hello everybody,
>
> I am currently working on a project that involves using an ISO11992 bus
> and the only transceiver I can find is the B10011S from Atmel.  Do any
> of you know of any alternatives?  The standard defines ISO11992 as
> having bus levels of 1/3 and 2/3 of the reference voltage, which is
> generally assumed to be 24V (27V) resulting in bus levels of 18V / 9V;
> however here in Australia this isn't always the case as we use European,
> Japanese and North American trucks all who seem to their own thing
> resulting in ISO11992 busses with 12V (14V) references and bus levels of
> 9V / 4.5V.  As you can imagine, this can cause all sorts of problems,
> especially when there are a number of trucks with 12V power rails and
> 24V referenced ISO11992 lines!  So basically, I am after an ISO11992
> compliant transceiver that will operate with a 12V reference, but will
> also operate with a 24V reference, such that it could be used in both
> situations where the reference voltage defines the bus levels (as per
> the standard).  After reading through the datasheet, I believe that the
> B10011S would be suitable for this, but I'm wondering if any of you have
> had experience using this transceiver with a 12V reference?
>
> Best Regards,
>
> Jason Turner
> Electronics Engineer
> REDARC Technologies
> --
> Archives and useful links: http://groups.yahoo.com/group/CANbus
> Subscribe and unsubscribe at www.vector-informatik.com/canlist/
> Report any problems to <canlist-owner@...>
>
>
>
>  

--
+--------------------------------------------------------------------
|                                                                    
|  CAN in Automation (CiA) GmbH                                        
|  Kontumazgarten 3                                              
|  DE-90429 Nuremberg                                                  
|                                                                    
|  phone: [phone]           http://www.can-cia.org         
|  fax:   [phone]          mailto:headquarters@...
|  CEO Holger Zeltwanger             AG Nuernberg HRB 24338                                                                  
+--------------------------------------------------------------------

Please register for

- CAN Seminar, Nuremberg (DE) July 21, 2008
- CANopen Seminar, Nuremberg (DE) July 22, 2008


--
Archives and useful links: http://groups.yahoo.com/group/CANbus
Subscribe and unsubscribe at www.vector-informatik.com/canlist/
Report any problems to <canlist-owner@...>

[Jason Turner-2]

Thanks Thilo,

Did you mean ISO11992 when you said "ISO11898"?  Since my understanding
is that the bus levels on an ISO11898 bus are nominally 1.5V / 3.5V
regardless of whether it is on a 12V or 24V truck.  ISO11992 is not
found on any American trucks, but since we have American trucks over
here our trailers are generally standardised to 12V, with 24V European
and Japanese trucks requiring 24V to 12V voltage reducers
(coincidentally, we are actually the main supplier of these reducers).
What this means is that the trailers generally operate with 12V
equipment, even when connected to 24V trucks.  In the case of this
project, the TEBS on the trailer is 12V and uses 12V referenced
ISO11992, while of course the ISO11992 bus coming from the (European)
truck is 24V referenced.

Best regards,

Jason Turner
jnturner@...


-----Original Message-----
From: canlist-owner@...
[mailto:canlist-owner@...] On Behalf Of Thilo
Schumann
Sent: Wednesday, 16 July 2008 7:20 PM
To: canlist@...
Subject: Re: [CANLIST] ISO11992

Hi Jason,

as far as I know, there was a second transceiver chip around some while
ago. I do not know if it is still available.

But, I learned that you will find ISO11898 only in European trucks and
all they have 24V. Because it will be required by European law sometimes

around 2009. AFAIK, the US trucks are using J1939 or a variant of that.
I do not know about the Japanese trucks.

Greetings

Thilo

Jason Turner schrieb:
> Hello everybody,
>
> I am currently working on a project that involves using an ISO11992
bus
> and the only transceiver I can find is the B10011S from Atmel.  Do any
> of you know of any alternatives?  The standard defines ISO11992 as
> having bus levels of 1/3 and 2/3 of the reference voltage, which is
> generally assumed to be 24V (27V) resulting in bus levels of 18V / 9V;
> however here in Australia this isn't always the case as we use
European,
> Japanese and North American trucks all who seem to their own thing
> resulting in ISO11992 busses with 12V (14V) references and bus levels
of
> 9V / 4.5V.  As you can imagine, this can cause all sorts of problems,
> especially when there are a number of trucks with 12V power rails and
> 24V referenced ISO11992 lines!  So basically, I am after an ISO11992
> compliant transceiver that will operate with a 12V reference, but will
> also operate with a 24V reference, such that it could be used in both
> situations where the reference voltage defines the bus levels (as per
> the standard).  After reading through the datasheet, I believe that
the
> B10011S would be suitable for this, but I'm wondering if any of you
have

> had experience using this transceiver with a 12V reference?
>
> Best Regards,
>
> Jason Turner
> Electronics Engineer
> REDARC Technologies
> --
> Archives and useful links: http://groups.yahoo.com/group/CANbus
> Subscribe and unsubscribe at www.vector-informatik.com/canlist/
> Report any problems to <canlist-owner@...>
>
>
>
>  

--
+--------------------------------------------------------------------
|                                                                    
|  CAN in Automation (CiA) GmbH                                        
|  Kontumazgarten 3                                              
|  DE-90429 Nuremberg                                                  
|                                                                    
|  phone: [phone]           http://www.can-cia.org         
|  fax:   [phone]          mailto:headquarters@...
|  CEO Holger Zeltwanger             AG Nuernberg HRB 24338

+--------------------------------------------------------------------

Please register for

- CAN Seminar, Nuremberg (DE) July 21, 2008
- CANopen Seminar, Nuremberg (DE) July 22, 2008


--
Archives and useful links: http://groups.yahoo.com/group/CANbus
Subscribe and unsubscribe at www.vector-informatik.com/canlist/
Report any problems to <canlist-owner@...>
--
Archives and useful links: http://groups.yahoo.com/group/CANbus
Subscribe and unsubscribe at www.vector-informatik.com/canlist/
Report any problems to <canlist-owner@...>

[Thilo Schumann-2]

Hi Jason,

I am sorry, I meant ISO11992. I was mixing up the numbers 8-)

OK, then, unfortunately, the Atmel is the only one available for you.

Greetings

Thilo


Jason Turner schrieb:

> Thanks Thilo,
>
> Did you mean ISO11992 when you said "ISO11898"?  Since my understanding
> is that the bus levels on an ISO11898 bus are nominally 1.5V / 3.5V
> regardless of whether it is on a 12V or 24V truck.  ISO11992 is not
> found on any American trucks, but since we have American trucks over
> here our trailers are generally standardised to 12V, with 24V European
> and Japanese trucks requiring 24V to 12V voltage reducers
> (coincidentally, we are actually the main supplier of these reducers).
> What this means is that the trailers generally operate with 12V
> equipment, even when connected to 24V trucks.  In the case of this
> project, the TEBS on the trailer is 12V and uses 12V referenced
> ISO11992, while of course the ISO11992 bus coming from the (European)
> truck is 24V referenced.
>
> Best regards,
>
> Jason Turner
> jnturner@...
>
>
> -----Original Message-----
> From: canlist-owner@...
> [mailto:canlist-owner@...] On Behalf Of Thilo
> Schumann
> Sent: Wednesday, 16 July 2008 7:20 PM
> To: canlist@...
> Subject: Re: [CANLIST] ISO11992
>
> Hi Jason,
>
> as far as I know, there was a second transceiver chip around some while
> ago. I do not know if it is still available.
>
> But, I learned that you will find ISO11898 only in European trucks and
> all they have 24V. Because it will be required by European law sometimes
>
> around 2009. AFAIK, the US trucks are using J1939 or a variant of that.
> I do not know about the Japanese trucks.
>
> Greetings
>
> Thilo
>
> Jason Turner schrieb:
>  
>> Hello everybody,
>>
>> I am currently working on a project that involves using an ISO11992
>>    
> bus
>  
>> and the only transceiver I can find is the B10011S from Atmel.  Do any
>> of you know of any alternatives?  The standard defines ISO11992 as
>> having bus levels of 1/3 and 2/3 of the reference voltage, which is
>> generally assumed to be 24V (27V) resulting in bus levels of 18V / 9V;
>> however here in Australia this isn't always the case as we use
>>    
> European,
>  
>> Japanese and North American trucks all who seem to their own thing
>> resulting in ISO11992 busses with 12V (14V) references and bus levels
>>    
> of
>  
>> 9V / 4.5V.  As you can imagine, this can cause all sorts of problems,
>> especially when there are a number of trucks with 12V power rails and
>> 24V referenced ISO11992 lines!  So basically, I am after an ISO11992
>> compliant transceiver that will operate with a 12V reference, but will
>> also operate with a 24V reference, such that it could be used in both
>> situations where the reference voltage defines the bus levels (as per
>> the standard).  After reading through the datasheet, I believe that
>>    
> the
>  
>> B10011S would be suitable for this, but I'm wondering if any of you
>>    
> have
>  
>> had experience using this transceiver with a 12V reference?
>>
>> Best Regards,
>>
>> Jason Turner
>> Electronics Engineer
>> REDARC Technologies
>> --
>> Archives and useful links: http://groups.yahoo.com/group/CANbus
>> Subscribe and unsubscribe at www.vector-informatik.com/canlist/
>> Report any problems to <canlist-owner@...>
>>
>>
>>
>>  
>>    
>
>
>  

--
+--------------------------------------------------------------------
|                                                                    
|  CAN in Automation (CiA) GmbH                                        
|  Kontumazgarten 3                                              
|  DE-90429 Nuremberg                                                  
|                                                                    
|  phone: [phone]           http://www.can-cia.org         
|  fax:   [phone]          mailto:headquarters@...
|  CEO Holger Zeltwanger             AG Nuernberg HRB 24338                                                                  
+--------------------------------------------------------------------

Please register for

- CAN Seminar, Nuremberg (DE) July 21, 2008
- CANopen Seminar, Nuremberg (DE) July 22, 2008


--
Archives and useful links: http://groups.yahoo.com/group/CANbus
Subscribe and unsubscribe at www.vector-informatik.com/canlist/
Report any problems to <canlist-owner@...>