Simple Traffic Light

[jbigger]

How would I use structured text in TwinCat 3 to make a simple simulation of a stoplight/intersection? Red light, green light, yellow light...etc. Please help! Thanks!

 

[mendonsy]

 

[jvdcande]

How would I use structured text in TwinCat 3 to make a simple simulation of a stoplight/intersection? Red light, green light, yellow light...etc. Please help! Thanks!

This is the question you'll have to answer before ANY serious help will be offered: what have YOU done so far to find a solution?

Tip: search the site, there are examples to be found, if you make the effort.

 

[iant]

http://www.plctalk.net/qanda/showthread.php?t=80075

When you have a look at this students post and the help he has recieved.
NOTE THE AMOUNT OF WORK HE DID TO GAIN ASSISTANCE.
none of us mind to help then

 

[shooter]

timerstep1 (IN:=steppingdone,TP:=t#3s,Q>step1done);
timerstep2 (IN:=step1done,TP:=t#4s,Q>step2done);
etc
if step1done = true redlight on.

 

[shooter]

oh sorry have to work as it is twincat version 3
first make the example from the book it is a traffic light.