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000303_news@columbia.edu _Fri Feb 16 13:45:38 2001.msg
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From: fdc@columbia.edu (Frank da Cruz)
Subject: Re: interfacing to FANUC CNC controller
Date: 16 Feb 2001 18:45:32 GMT
Organization: Columbia University
Message-ID: <96jsgc$cu2$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <HUdj6.275608$w35.45549405@news1.rdc1.nj.home.com>,
dls2 <dlshearer@home.com> wrote:
:
: The first DC (Device Control) character which appeared,
: before the first percent sign (%), was an up/down arrow,
: associated with being a ^R, or DC2.
:
: The second DC (Device Control) character which appeared,
: after the second, and last, percent sign (%), was a paragraph
: symbol, associated with being a ^T, or DC4.
:
Note that any association of graphic symbols with C0 control
characters has nothing to do with ASCII or any other standard.
It's a PC peculiarity,
: CTRL-R and CTRL-T do appear,
: but I have no idea what they mean,
: much less how Kermit interprets
: them regarding flow control.
:
It doesn't; they are data characters. If they come in, Kermit
records them in the session log, just like any other characters
except -- if Xon/Xoff flow control is in effect -- Xon and Xoff.
: Since the CTRL-R and CTRL-T appear at the head and
: foot of the data, respectively, do they have something to
: do with handshaking? How should handshaking be set?
:
They might have something to do with it, but if so it's not any
standard or well-known form of handshaking.
: Is XMIT the wrong command to be using for reading a file
: from disk and spooling the raw contents out onto the line?
:
It depends on the requirements of the device.
: Does XMIT assume the use of a protocol, be that X-, Y-, or
: Z-modem, or Kermit, and not ASCII?
:
No.
: Should I have attempted to use the FILE command, instead?
:
Maybe.
: The FANUC CNC controller gets put into a state where it is
: ready to accept data. The assumption is that this controller
: is attempting to read from tape, so the mode is one of LSK
: (Label SKip). The controller will read any data sent to it, but
: will not actually regard any of what is sent to it as data, until
: after the first percent sign (%) is sent to it. Upon receiving
: this first percent sign (%), the controller switches to an Input
: mode, wherein everything received is considered to be data,
: and duely processed as such, until such time as a second
: percent sign (%) appears, signifying an end to the data input,
: and switching the controller out of its Input mode.
:
Yes, but the question is, how does the controller signal you
that it is ready to receive data? What form does the dialog,
if any, take? From what you've said, it appears that maybe it
it sends a kind of "prompt" framed by ^R and ^T. So maybe
Kermit needs to wait for a ^T before sending the next record.
So try this:
set xmit prompt 20 ; 20 is the ASCII (decimal) code for Ctrl-T.
- Frank
From news@columbia.edu Fri Feb 16 13:45:37 2001
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From: "Joe H. Gallagher" <dtrwiz@ix.netcom.com>
Subject: "can't open connection" K95 error
Date: Fri, 16 Feb 2001 13:28:33 -0500
Organization: MindSpring Enterprises
Message-ID: <3A8D714F.4FC99117@ix.netcom.com>
To: kermit.misc@columbia.edu
Kermit-95 Version 1.1.20 (upgraded from 1.1.11 via 1.1.17)
hp 733Mhz machine
OS: Microsoft ME
Serial ports on com1 and com2
Lucent Technologies (new) V90 "software modem" on com3.
Hyperterm works on com3.
Can access the Internet on com3.
Can access an external modem on com1 using Kermit-95.
However, when trying to access com3 with Kermit-95 with
SET PORT or SET LINE, I get
Sorry, can't open connection: com3: Invalid argument.
or
Sorry, can't open connection: com3: Bad file descriptor.
How do I set up the operating system or configure Kermit
so that Kermit-95 can "talk to" this "software modem"?
Is there some way to tell Kermit about the special
driver for this modem? Its as though Kermit-95 is
incompatible with this kind of "softare modem"?!?!
Thanks for any help.
Joe H. Gallagher