485 data extraction
485 data extraction
(OP)
Is it possible without knowing much about codewriting, to extract single command data from rs485 comms and, say, use the single command info discretely?
Mark
Mark
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RE: 485 data extraction
Dan - Owner
http://www.Hi-TecDesigns.com
RE: 485 data extraction
RE: 485 data extraction
Disregarding for the moment that two master controllers would be bad (I'll leave that oen up to you to figure out), it's not a bad problem, per se. The "new" master controller (buttons) would use some addressing scheme that wouldn't interfere with data modules currently on the bus. The new "slaves" would understand the addressing scheme and do what they're told.
Your problems seem to be:
1) You want to do this with no code writing (probably impossible)
2) You'll have multiple masters on the line (doable, but you have to get them to work together... typically involves code, but can be done in hardware)
3) Slaves of one type cannot interfere with slaves of the other type (again, involves code)
Dan - Owner
http://www.Hi-TecDesigns.com
RE: 485 data extraction
I was approached with this challenge and really need to just verify that I'm not overlooking something simple...I think they are thinking there is some sort of blackbox out there that will allow this, but I cannot find it if so....
Thanks for your input...
RE: 485 data extraction
These stamps also have parallel I/O. Arrange the stamp to recieve the 485 commands and send them down the line - fully transparent. Then, write a simple code loop that tests the inputs and, if one of the push-buttons is activated, sends the corresponding command. Just do it! You will learn a lot. And you will probably have some fun, too!
A "basic" Basic Stamp won't cost you more than about USD 100. Perhaps less. Add power supply and level converters plus some I/O filters and you will end up with something like USD 200. Then, you may want to make a PCB out of it. That will take a lot more work - and still a couple of 100 dollars. But it can be done at a fairly low cost.
If you approach an engineering company with this, you can probably get it done under USD 2000. It all depends on what they already have in store.
Gunnar Englund
www.gke.org
RE: 485 data extraction
Dan - Owner
http://www.Hi-TecDesigns.com
RE: 485 data extraction
are not allowed in the forums"
Gunnar Englund
www.gke.org
RE: 485 data extraction
the basic stamp idea is probably an excellent solution, I just need time to play with it...
Thanks again....
Mark
RE: 485 data extraction
I know people that do such things in their spare time. It's called self-teaching...
Gunnar Englund
www.gke.org
RE: 485 data extraction
RE: 485 data extraction
RE: 485 data extraction
Sounds like a fun project angryman. A short one with an end in sight unlike some... As skogs sez it's a good little project for someone to "get their feet wet" using a small-off-the-shelf board. It could turn into much more for you opening your horizon a bit.
Here's a link to stamps:
ht
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: 485 data extraction
I'm going to send you a note from your website....
Thanks,
Mark