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We appreciate your patience as we improve our online experience.
01-03-2012 05:38 PM
In Multisim if I have a "T" junction with a junction dot where the lines join, and then I move the line at the base of the "T" the junction dot does not move. This leaves the junction dot floating in the middle of the top line and no connection where the lines should join.
I must be doing something wrong because no one in his right mind would create a program that always worked this way (the junction moves automatically to maintain the connection in every other schematic program I have seen, even dating back to MS/DOS days).
In some cases after moving a line that connects to another line a wierd maze of traces is drawn around the connection instead of just a simple straight connection. What should be a simple "T" junction degenerates into half a dozen or more traces looped around each other. Again, I must be doing something wrong because this is just silly.
Also, if I have two lines that connect at a right angle and I drag one trace sometimes the other trace moves, totally screwing up the spacing between the traces - this is especially annoying when I have a lot of parallel traces separated by two or more grid steps and the progream tries to reposition them on a single grid spacing.
I have a situation where a wire connects a resistor and an IC pin. I have tried to draw another wire from the resistor lead but the program insists on starting the wire at the IC pin, looping it around the end of the resistor. Again, this is pretty odd!
I suspect all of these problems are related. I have looked for some options that might control these problems and haven't found any.
Is there a way to make the junction dot follow the junction when a line is moved?
Is there a way to disable the "auto scramble" mess?
Phil
Solved! Go to Solution.
01-03-2012 05:48 PM
Here is another similar problem.
I selected a collection of components, lines and junctions and tried to move them. When I release the mouse button everything jumps back to the original position.
There is a message that "placing a junction over a wire is not allowed." Where else would you want to place a junction!?
I am not trying top place a junction - just move one!
Phil
01-03-2012 05:52 PM - edited 01-03-2012 05:55 PM
Another screwball problem!
I have two lines that join at a right angle ("L"). I want to draw another line from this junction but the program will not allow me to! I have to draw a free floating line, terminate the line draw function, select the new line and then drag the endpoint to the corner of the "L". Then the program automatically places the junction dot. What a mess!
In a similar way the program refuses to allow me to draw traces to connect with component pins that already have a trace connected to them. Again, I have to draw a trace ending at nowhere and then move the end of the trace to the component pin.
Please tell me that this isn't the way the program is supposed to work!
Phil
01-03-2012 06:16 PM - edited 01-03-2012 06:18 PM
One more time!
I have a vertical wire. I have the "L" junction of another net nearby. I want to conenct the two together.
When I use "Place/Wire" the program refuses to draw a new wire between the existing wires. When I move the cursor over an existing wire the "+" cursor changes to an arrow, and if I click the existing wire is selected instead of starting a new wire. I tried to draw a new "L" between the two and later move the ends of the traces, but the program will not complete the new lines!When I press ESCape the lines disappear but a new junction dot appears in the middle of nowhere between the existing traces.
I tried placing a junction dot on the vertical trace and then drawing from this junction. Instead the program began the new line at the end of the vertical line, and not at the junction!
Phil
01-06-2012 02:15 PM
Hi Phil,
If you want to place a junction on an existing wire, then right click and select Place on Schematic -> Junction or press Ctrl + J. Once you have placed a junction, you can draw a wire from that junction to any other point on the design, even another wire.
Some things you have mentioned are current limitations of the software like the junction not moving when you move one of the nets. I have passed on you concerns about that to R&D.
Hope this helps.
01-06-2012 03:14 PM
Thanks for the CTRL J tip - that will come in handy. I didn't se that in the documentation.
Phil
01-06-2012 05:24 PM
The attached picture shows the problem I am seeing nearly every time I try to edit a schematic's connections.
Why do the lines twist into knots? Is there a way to prevent the program from doing this?
Phil
07-13-2017 11:50 PM
Yes, I agree with Phil 1000%, I don't know how much time I have wasted because this issue trying to untangle myself from the mess of wires with fixed solder dots. Please fix it. A lot of people will be very happy. Thanks.