15 Jan
2017
15 Jan
'17
9:47 a.m.
The cable that came with my 11/34 is for current loop, i need a cable
that is wired for serial. If no one has the cable, i could make one
myself, i just need the 40 pin connector that goes on the cable. I have
been unable to find the connector. Oddly ebay appears to have the side
of the connector that goes on the M7856 board itself, but i need the
other end, that goes on the wire.
Any help is much appreciated. Lots of setbacks with this thing. I just
want to see it running already.
--Devin
15 Jan
15 Jan
10:24 a.m.
On Sun, Jan 15, 2017 at 5:47 PM, Devin <lyokoboy0 at gmail.com> wrote:
The cable that came with my 11/34 is for current loop,
i need a cable that
is wired for serial. If no one has the cable, i could make one myself, i
just need the 40 pin connector that goes on the cable. I have been unable to
find the connector. Oddly ebay appears to have the side of the connector
that goes on the M7856 board itself, but i need the other end, that goes on
the wire.
The normal IDC ribbon cable socket, as was used on IDE disk drive cables
(40 pin) will fit. In an emergency, you can take a length of 3 wire ribbon
cable, separate the wires and press them onto the right pins of such a
socket, and use a spare piece of the same wire for the jumper (1489
output to UART input), agan pressed onto the right pins, Then press the
whole lot together in a vice. Did that for a DEC serial cable over 25
years ago
If you want to do it 'properly' then I think this is the right
connector housing :
http://uk.rs-online.com/web/p/pcb-connector-housings/7781037/
Yes, 44 pin, there are 2 unused pins at each end. But 40 pin
ones are made too. And you would need contact pins, which
are linked from that page.
That's a UK supplier, I have no idea where you are, but you
might be able to track it down from the info on that page.
-tony
10:47 a.m.
On 1/15/2017 10:24 AM, Tony Duell wrote:
On Sun, Jan 15, 2017 at 5:47 PM, Devin <lyokoboy0
at gmail.com> wrote:
Or here is a slightly different approach that I now use. I made up this PCB:
https://oshpark.com/shared_projects/uTMf3v08 (price is $18 for 3 boards from
OSHpark)
that adapts a standard 40p IDE cable to a 9pin serial connector (M or F, as needed).
So with this approach you can use about any length of standard 40p IDE cable to
break
out from the DL11 (I use about 24" lengths to get out of the 11/34 box), the
adapter, and
then a standard M/F serial cable to a 9p serial port, or a 9p serial port to USB
adapter.
Don
The cable that came with my 11/34 is for current
loop, i need a cable that
is wired for serial. If no one has the cable, i could make one myself, i
just need the 40 pin connector that goes on the cable. I have been unable to
find the connector. Oddly ebay appears to have the side of the connector
that goes on the M7856 board itself, but i need the other end, that goes on
the wire.
The normal IDC ribbon cable socket, as was used on IDE disk drive
cables
(40 pin) will fit. In an emergency, you can take a length of 3 wire ribbon
cable, separate the wires and press them onto the right pins of such a
socket, and use a spare piece of the same wire for the jumper (1489
output to UART input), agan pressed onto the right pins, Then press the
whole lot together in a vice. Did that for a DEC serial cable over 25
years ago
If you want to do it 'properly' then I think this is the right
connector housing :
http://uk.rs-online.com/web/p/pcb-connector-housings/7781037/
Yes, 44 pin, there are 2 unused pins at each end. But 40 pin
ones are made too. And you would need contact pins, which
are linked from that page.
That's a UK supplier, I have no idea where you are, but you
might be able to track it down from the info on that page.
-tony
10:55 a.m.
On Sun, Jan 15, 2017 at 6:47 PM, Don North <north at alum.mit.edu> wrote:
Or here is a slightly different approach that I now
use. I made up this PCB:
https://oshpark.com/shared_projects/uTMf3v08 (price is $18 for 3 boards
from OSHpark)
that adapts a standard 40p IDE cable to a 9pin serial connector (M or F, as
needed).
So with this approach you can use about any length of standard 40p IDE cable
to break
out from the DL11 (I use about 24" lengths to get out of the 11/34 box), the
adapter, and
then a standard M/F serial cable to a 9p serial port, or a 9p serial port to
USB adapter.
I did something similar, using a 40 pin IDE-type cable, then a 40 pin
header plug
on a bit of stripboard (strips cut between the rows of pins of course)
with a few
wires soldered to the right strips going to a DB25 connector.
For a real kludge you can put solid-core wire into the holes of an IDC
socket. So
IDE cable as above, DB25 with solid core wire soldered to the right pins, then
pushed into the holes on the free end of the cable. Not for 'use' but
it will work
for testing.
Of course the OP has the current loop cable. You can remove the contacts from
40 (or 44) pin socket housing and re-arrange them. You have the jumper wire for
the serial pin, you need to move one end of that. And a length of 6
way cable with
said contacts on one end -- strictly you only need 3 for the RS232 one. So you
could hack it about, cut of the 8 pin mate-n-lock and fit a DB25. But pehaps you
want to keep the current loop cable too.
-tony
2898
days inactive
2898
days old
3 comments
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participants (3)
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ard.p850ug1＠gmail.com -
lyokoboy0＠gmail.com -
north＠alum.mit.edu