On 4/24/2012 7:12 AM, Pete Keillor wrote:
On Mon, 23 Apr 2012 19:24:07 -0500, wrote:

On 4/23/2012 6:56 PM, dpb wrote:
On 4/23/2012 5:34 PM, Tom Gardner wrote:
...

So, how do I get from flowchart to Ladder programming?

http://engineeronadisk.com/V2/book_PLC/engineeronadisk.html

BTW, I ran into the fellow who wrote this at an Embedded Systems
Conference in SF/SJ quite a number of years ago...

http://claymore.engineer.gvsu.edu/~jackh/

He's on faculty at Grand Valley State U in Michigan...

There are lots of other languages that might be suitable, such as
function block, structured text, and phase diagrams. Ladder is my
least favorite, but might be the best choice for your case. AB's phase
diagram programming was undergoing some changes about the time I
retired a couple years ago. I did a lot of AB and some Siemens.
each bump.
If you can do the flowchart, you've done the tough part. Describing
exactly what you want the program to do is a large part of the work.
Still, I found it more and more difficult to focus while programming
after the age of 55 or so. Before that, if you came in my office
while I was working, I probably wouldn't hear you or notice you at
all. I'm a lot easier to interrupt these days.

Pete Keillor

What are phase diagrams? My cousin would make a diagram that would have
square "bumps" on a line that would show if a relay contact or a switch
was on or off. Each contact set would have a separate horizontal line
and somehow he would create the logic by the state of each bump. Is
trhat a phase diagram?