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'[OT] RS232'
1997\09\08@071937 by David BALDWIN

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Hi all,

       I had like to drive a plotter which uses RS232 protocol. When using
Hyperterminal, things are working fine, except that it sends ASCII. I am
using: Send text file. Is there any other soft, or perhaps in Hypert.,
to drive my plotter like Hyperterminal does, but with binary transfer?
Thanks a lot.

David

1997\09\08@090943 by Andy Kunz

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At 01:18 PM 9/8/97 +0200, you wrote:
>Hi all,
>
>        I had like to drive a plotter which uses RS232 protocol. When using
>Hyperterminal, things are working fine, except that it sends ASCII. I am
>using: Send text file. Is there any other soft, or perhaps in Hypert.,
>to drive my plotter like Hyperterminal does, but with binary transfer?
>Thanks a lot.

I presume you have a file with the plot commands in it.

Try this:

C:>  COPY filename COM1 /B

The /B is the key - it goes out in pure binary then.

Andy

==================================================================
Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
         Hardware & Software for Industry & R/C Hobbies
       "Go fast, turn right, and keep the wet side down!"
==================================================================

1997\09\08@092211 by David BALDWIN

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Andy Kunz wrote:
{Quote hidden}

       Yes, but I have to change the baud rate. I will try with MODE this
evening. My problem is my plotter, it only has 40 word fifo, and the
upload soft has to stop when it tells STOP, not a word after, or it will
be lost. That's the key of the problem :(

David

1997\09\08@110813 by Mike Keitz

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On Mon, 8 Sep 1997 15:18:25 +0200 David BALDWIN <spam_OUTdbTakeThisOuTspamSDM.BEL.ALCATEL.BE>
writes:

>        Yes, but I have to change the baud rate. I will try with MODE
>this
>evening. My problem is my plotter, it only has 40 word fifo, and the
>upload soft has to stop when it tells STOP, not a word after, or it
>will
>be lost. That's the key of the problem :(

Engage the "hardware flow control" at both ends.  In Winodws 95, go
through Control Panel - System - Device Manager - Ports (COM and LPT) -
Communications Port (COMx) - Port Settings, then pull down the flow
control box and select Hardware.  If the plotter protocol is ASCII text,
which could be determined by looking at the file, then "Send Text File"
from a terminal program should work.

The DOS com drivers used to always use and require hardware flow control.
For a slow device like a plotter, use a ,P option in the mode setting.
This gives extra timeout time.

The cable needs to have the flow control connections wired.  A "3-wire"
cable having only send, receive, and ground won't work.  The important
wire is RTS (plotter) - CTS (PC) which is pin 5 of a 25-pin connector if
the plotter is wired as DCE.  When this signal is inactive, the PC will
stop sending.  The plotter will likely drive it without any special setup
but you may need to reconfigure it.  One of those monitor boxes with a
LED connected to each signal is useful in situations like this.

1997\09\08@142851 by Andy Kunz

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>        Yes, but I have to change the baud rate. I will try with MODE this
>evening. My problem is my plotter, it only has 40 word fifo, and the
>upload soft has to stop when it tells STOP, not a word after, or it will
>be lost. That's the key of the problem :(

What kind of plotter?  I use this with several HP plotters (from A-size
flatbed to DraftPro EXL), and only requirement is hw handshaking.

Sure you got the right cable and MODE settings?

Andy

==================================================================
Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
         Hardware & Software for Industry & R/C Hobbies
       "Go fast, turn right, and keep the wet side down!"
==================================================================

1997\09\09@161308 by Steve Smith

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To print plotter files I used to use the following

MODE COM1 = LPT1
copy{plotfile.hgl} LPT1

always worked on an old Huston plotter and still works on Roland plotters as
the command strings are all ASCII anyway

Cheers Steve.....

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