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Post subject: Cabling Software
Posted: Tue Oct 17, 2006 10:16 pm
Joined: Tue Oct 17, 2006 10:02 pm
Hi I am looking for a cable and harness software. What I am expecting from the software is the sofware can generates list of interconnections when we input the starting and end point.
Posted: Sun Mar 18, 2007 10:47 am
Joined: Tue Dec 26, 2006 5:39 pm
I am not sure I exactly understand your question. However many years ago, back in the days of DOS (Does Operate Sufficiently) I used Orcad 4 for all schematic work. I did all the wiring harness schematic in Orcad.
I actually put the contacts for each connector on the schematic, as well as things like TB1-3 for barrier strip 1 position 3.
Then set Orcad to put out the netlist as "wirelist". It is was a nice human readable printout that would show
P3-8 TB1-3 AWG 22 white, irrad poly
A4C2-18 TB1-3 AWG 22 white, irrad poly
It was easy to put this file output into a spreadsheet. (I haven't gone anywhere near Orcad since the 90's so I have no idea what to do today.)
To find all of your 'interconnections' you would only have to use the spreadsheet search function to find all instances of "TB1-3". (Since in my case A4C2-18 would only have one wire attached, but TB1-3 could have many.)
I gave this list to the technicians and they checked off each wire as it was put in the harness (they measured the length of each wire the first time and we manually put that in the spreadsheet). So if they were out one day someone else could pick up exactly where they left off.
I also then took the appropriate columns from the spreadsheet, the start and end terminations, and printed them to printable heat-shrink.
Each piece of heatshrink would say something like
Pull this piece of heatshrink off the tractor feed carrier strip, cut it in half and then we had the wire identification ready to go on each end of the wire. Regular old dot matrix impact printer using a ribbon. The print would smudge very badly until it was heat-shrunk. Then the ink became permanent and smudge proof.
If my memory works we were using Alpha brand F.I.T. printable heatshrink. Never tried this with ink-jet printers.
Another advantage after this was all done was that it would occasionally save a tech from looking so many schematics. If he was troubleshooting a circuit on A4 connector C2-18 he could just look at this chart and see that the wire went to barrier strip 1 position 3. Less chance of making a mistake than trying to follow lots of lines around a schematic (had 141 wires in some of those harnesses, most connectors were only 6 to 8 pins)
Antiquated ? Yes.
Undocument Feature ? Yes.
But it worked well. I got good at it since we had revisions after every 2 to 4 systems manufactured.