adccommunitymod (AutomationDirect) asked a question.
Click, Double Click and Triple Click
Created Date: August 13,2015
Created By: trellend
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Click PLC http://snag.gy/wS9u5.jpg 1 click on X1 turns on Y5 2 clicks on X1 turns on Y6 3 clicks on X1 turns off both. Critiques are welcome, customer asks for multi functional buttons. Rung 4 was not needed, left over from testing. In application, 1 click runs the ram through a cycle of forward, and back. 2 click runs it forward to limit and stop. 3 clicks runs it backwards to limit and stop (imagine obstruction). They want all the single button controls like this.
Created Date: August 14,2015
Created by: Adisharr
Looks like it will work fine. For me, I tend to rarely use counters. I like directly increment / decrementing memory locations but that's just a personal preference.
You'll find many do not like using SET on outputs directly. For a program this small I don't see any reason it would be a problem.
Created Date: August 15,2015
Created by: trellend
I noticed that.
I guess it gets complicated if there are a bunch of sets and resets on a bunch of different outputs. In my case (it's a modified example), each click 1,2,3 just sets a memory bit, there is no reset in this. Memory bit starts a process in another subroutine.
Created Date: August 19,2015
Created by: Ridgeline Mach
You can try this. Just using a math function and compares to operate the outputs.
Created Date: August 28,2015
Created by: dumpsta
I guess it gets complicated if there are a bunch of sets and resets on a bunch of different outputs. In my case (it's a modified example), each click 1,2,3 just sets a memory bit, there is no reset in this. Memory bit starts a process in another subroutine.
If you look at old electrical diagrams for machines using ordinary relays, you'll see that a latched circuit is used many times where you would probably use the "set " instruction.
I work with an older co-worker who used to wire machines pre-plc and he always uses latched "out " instruction instead of set.
There are some machines with old plcs here that don't even have a set command
Created Date: August 13,2015
Created by: trellend
Click PLC
http://snag.gy/wS9u5.jpg
1 click on X1 turns on Y5
2 clicks on X1 turns on Y6
3 clicks on X1 turns off both.
Critiques are welcome, customer asks for multi functional buttons.
Rung 4 was not needed, left over from testing.
In application, 1 click runs the ram through a cycle of forward, and back. 2 click runs it forward to limit and stop. 3 clicks runs it backwards to limit and stop (imagine obstruction). They want all the single button controls like this.