[chiplotle-discuss] dxy-880 working???

[douglas repetto]

It's very strange that the plotter won't talk back. Does anyone have 
dxy-880 manual? It should list the valid commands. Does an error light 
come on when you try to send it the "OI" command?

You could simply edit Chiplotle to ignore all query sending instructions 
(and make those functions return valid made up data). The problem with 
that is that Chiplotle will then not be able to handle buffer management 
for you. If you send too much data at once the plotter will barf and 
drop commands resulting in the behavior described in the "Temperamental 
Plotter" thread. Maybe the dxy-880 takes care of this with hardware 
handshaking, I don't know. But I'm really surprised that it doesn't 
respond to at least the "OI" and the buffer size commands.

best,
douglas

On 3/16/12 11:40 PM, Joe Frey wrote:
> All, Calvin got me working on the dxy-880 I have. And, I got it to work,
> sortof. I connected with coolterm and used the suggested settings in
> config.py for the jumpers. Well, I sent "INOI" and nothing. No id came
> back, like before. I decided not to stop there this time, though. So, on
> a lark I sent "SP1 LB HEY THERE", and low and behold it printed it out!
> Literally. Character for character. Then, I sent it a hpgl file through
> coolterm and watched it print the commands out like a good terminal. So,
> I figured out that we had serial communication, but that it didn't
> understand hpgl. OK. Next I set the dipswitch again for rpgl and sent
> the file again. Boy oh boy! It drew a contour map.
> So, it won't work with chiplotle because it won't talk back? Any ideas?
> Worst case for my project, I can send through coolterm to the 880 and
> use chiplotle with the 1250. But, it's not ideal. I want to keep these
> printers printing using cron. I already wrote a shell script for the
> 1250. Perhaps it'll be good for me to learn to open a terminal
> connection at the command line and send a file...
>

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