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RS-485, -422, & -232

SEr2 on the DPM-3s (page 15):

 

line feed or not?     Doesn't matter

continuous data output or with ascii command? I don't know what the ASCII commands are, so I would try continuous output. The concern is that they don't identify each device uniquely. If they don't, then you need ASCII command, and you need to figure out the command.

 

SEr3:

 

special start and/or stop characters?  No

normal RTS or single-transmission?   No RTS

termination characters or not?            No

parity?                                             Default

 

now on the RS-485 board:

 

page 03...

 

JP1 jumper:

 

RTS or auto?    Default

echo or not?     no echo

loop or not?      Depends on your wiring

 

and what do i do in the 232 module in dasylab?  there are so many different things you can mess with...

 

data request?

format?

string?

 

reset, start, stop commands?  data request necessary?

 

how does all this tie in with the six different addresses of the DPM-3s? 

 

 

RS232 setup depends on the Continuous setting above.

 

If ASCII command, you need to activate the Options/Data request necessary setting. Then, back on the main dialog, enter the data request command. Use \r for the <CR> character to terminate the command line.

 

Data format ..... will depend on what you see. With one device, and no device id, the format is a\r, a string of characters that is a number followed by a <CR> character.  This correctly interprets  +12345.666<CR>.

 

If you have a device id or other unique identifer for each device, then you want to use "device" a\r where the "device" is the exact unique string.

 

At this point, you need to get it talking to multiple devices, and see what the data looks like using the RS232 monitor.

 

Are you really in Brasil? Can you call us?

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hello CJ:

 

no, i am not in brasil... in the US.  i work for michigan technological university www.mtu.edu located in a peninsula that sticks into lake superior - see attachment.  it's a 7 to 7.5 hrs car drive north of chicago.  but i am from brasil 'tho...

 

anyway...

 

let me mess around with things a little more.  if calling you is possibility, that would be great for, again, i am very illiterate when it comes to electronics.

 

thanks, kiko

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