10BaseT1S/L

Joe Gwinn <joegwinn@comcast.net> writes:


>Well 10BASE-T1L and 10BASE-T1S still exist, and the latest version of
>the standard was approved in 2019, so it's still active.  Lots of
>people make chips.  Google on 10BASE-T1L to find many.

Many What? I'm seeking things I can put in a NewEgg or Microcenter
or ? shopping cart.


>Note that if twisted pair is not required, the fiber-optic
>options are winning big in big factories because of their total
>immunity to EMI.

That is quite true, but the value of the installed base STP in
plants is huge. Not everything needs GB/s.


-- 
A host is a host from coast to coast...............wb8foz@panix.com
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

David Lesher <wb8foz@panix.com> wrote:
> Joe Gwinn <joegwinn@comcast.net> writes:
> 
> 
>> Well 10BASE-T1L and 10BASE-T1S still exist, and the latest version of
>> the standard was approved in 2019, so it's still active.  Lots of
>> people make chips.  Google on 10BASE-T1L to find many.
> 
> Many What? I'm seeking things I can put in a NewEgg or Microcenter
> or ? shopping cart.
> 
> 
>> Note that if twisted pair is not required, the fiber-optic
>> options are winning big in big factories because of their total
>> immunity to EMI.
> 
> That is quite true, but the value of the installed base STP in
> plants is huge. Not everything needs GB/s.
> 
> 

If it&rsquo;s compatible with automotive Ethernet, you can get adapters from
Amazon. Not super cheap. 

We recently did that with a couple of lidars. 

Cheers 

Phil Hobbs 

-- 
Dr Philip C D Hobbs  Principal Consultant  ElectroOptical Innovations LLC /
Hobbs ElectroOptics  Optics, Electro-optics, Photonics, Analog Electronics 

On Mon, 27 Nov 2023 01:08:35 -0000 (UTC), David Lesher
<wb8foz@panix.com> wrote:

>Joe Gwinn <joegwinn@comcast.net> writes:
>
>
>>Well 10BASE-T1L and 10BASE-T1S still exist, and the latest version of
>>the standard was approved in 2019, so it's still active.  Lots of
>>people make chips.  Google on 10BASE-T1L to find many.
>
>Many What? I'm seeking things I can put in a NewEgg or Microcenter
>or ? shopping cart.

The point is that if companies like Analog Devices are making the
chips, there necessarily are many other companies buying the chips and
incorporation them into things you can buy.  And the automotive market
is likely to be very large.

But you will need to do your own research to find candidate products
and determine which ones are suitable.


>>Note that if twisted pair is not required, the fiber-optic
>>options are winning big in big factories because of their total
>>immunity to EMI.
>
>That is quite true, but the value of the installed base STP in
>plants is huge. Not everything needs GB/s.

See the "Note that if twisted pair is not required" qualifier.  There
are many folk who don't have that limitation, and knowing where the
market centroid is may be useful.

Joe Gwinn

Don Y <blockedofcourse@foo.invalid> writes:


>I don't see a market, there.  Consider:  anyone who already has
>a 4-20mA loop in place would have to put converters on both
>ends of the (existing) wire -- one to convert the transducer
>to digital and another to convert the digital back to 4-20mA
>to i/f to <whatever> (PLC?).

Rather a 4-20ma converter at the sensor, an existing
STP of ~500M in length, and a new digital controller
replacing dozens of museum-quality PID controllers.


-- 
A host is a host from coast to coast...............wb8foz@panix.com
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> writes:


>If it's compatible with automotive Ethernet, you can get adapters from
>Amazon. Not super cheap. 

>We recently did that with a couple of lidars. 

I suspect those were 10BaseT1S, suitable up to 15M distances.
-- 
A host is a host from coast to coast...............wb8foz@panix.com
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

On 11/27/2023 4:49 PM, David Lesher wrote:
> Don Y <blockedofcourse@foo.invalid> writes:
> 
> 
>> I don't see a market, there.  Consider:  anyone who already has
>> a 4-20mA loop in place would have to put converters on both
>> ends of the (existing) wire -- one to convert the transducer
>> to digital and another to convert the digital back to 4-20mA
>> to i/f to <whatever> (PLC?).
> 
> Rather a 4-20ma converter at the sensor, an existing
> STP of ~500M in length, and a new digital controller
> replacing dozens of museum-quality PID controllers.

Assuming the industry being served allows replacing kit
without also revalidating the process.