Introduction.

Workshop PG5 Exercise Chapter 4
Draw your connections, to match the drawing below.
Position these in the center of
the page. We will be adding
to this program
Build and download the program. (Make sure that the AND_GATE file is unlinked).
Go online and observe the ouput Leds. Led 32 and 35 should be on.
Led 33 and 34 should be off. The comparaters are comparing their value to 0. If
their value is equal to zero, then their output is high.
Counters:
Using this same program, we will add a counter to it.
1. Make sure you are offline.
2. Click on the Eraser icon
Place this on what you want
to delete and click the left
mouse button.
3. Erase all the lines that connect to the left column. (there should be no lines
left of the comparaters).
4. Open the pull down menu for Families, and select “Counters”.
5. Open the pull down menu for function and select “Up wrap around with
clear”
6. Paste the counter where all the lines were, left of the comparaters.
7. Add to the Symbol list, Input4 and Input5. Both will be inputs, with there
address being the same as their input number. Comment for Input4 is “resets
counter to zero” and for Input5, “toggle to activate count”. Change the
Address/Value of Input3 from 0 to 3.
© Saia-Burgess Controls Ltd. Page 4E-6