Shawn Tierney

Good morning RM,

I have not been able to find anyone who makes one of those demos affordably, so I borrowed this one from my local distributor.

Sincerely,

Shawn Tierney,
Instructor at The Automation School

Good morning Chris,

Thanks for your question.

My first thought is RSLogix/Studio 5000 is updating slowly, and not catching every count. Throughout the course you'll see it only updating about 1 a second.

But in listening to the motor (not shown) I think the Photo Eye may be out of alignment and catching the part twice per rev?

It…[Read more]

Good morning Chris,

Thanks for your question.

JSR's can be used to pass parameters to and from subroutines, so the same subroutine can be used by multiple processes.

For instance, if you have a subroutine that calculated the result of a mathematical expression, you could jump / call it from different places in your code, each time passing…[Read more]

Good morning Pivotal,

Thanks for your question.

STI stands for Selectable Timed Interrupt, and it's used to rung a routine every so many milliseconds.

Sincerely,

Shawn Tierney,
Instructor at The Automation School

Good morning Jose,

Most objects have selectable Foreground and Background colors.

Here's an exercise to help see this in action:
– Open your project and a graphic display
– Place/Draw a rectangle on the display
– Change the rectangles foreground color to Black and background color to White.
– After observing the change, change the…[Read more]

Good morning Jose.

When it comes to the period numbers ( .# ) those are the individual bits of the DINT they belong to.

Since the analog value “Local:3:O.Ch0Data” is a double integer (aka DINT,) it has 32 bits under it:
– Local:3:O.Ch0Data.00
– Local:3:O.Ch0Data.01
…
– Local:3:O.Ch0Data.30
– Local:3:O.Ch0Data.31

Here's an exe…[Read more]

Good morning Jose,

Thanks for your question. The original PanelView Plus hardware (not PVP6 or 7) supported FactoryTalk View Machine Edition Runtimes and Firmware from versions 3.00 to 5.1.

When the PanelView Plus 6 came out, the original PanelView Plus models were then considered to be “Legacy” or “Old” hardware, and .MER Runtimes of…[Read more]

Good morning Jose,

Thanks for your question.

In this course, the address I:0/3 is wired to the Normally Closed contact of the Stop Button.

The next question is typically “why” do we use a Normally Closed contacts on Stop Buttons? Why would we want the act of “pushing” the stop button to “Open” the contacts and stop sending power to the…[Read more]

Good morning Jose.

When it comes to the period numbers ( .# ) those are the individual bits of the DINT they are under.

So, since the analog value “Local:3:O.Ch0Data” is a double integer (aka DINT,) it will have 32 bits under it, like Local:3:O.Ch0Data.0 through Local:3:O.Ch0Data.31.

Here's an exercise to see exactly what I mean:
– Cre…[Read more]

What is the difference between Local:3:O.Ch0Data and the others like Local:3:O.Ch0Data.0, Local:3:O.Ch0Data.1 etc.

The .#’s are the individual bits of the DINT.
So since the analog value “Local:3:O.Ch0Data” is a double integer, it will have 32 bits under it, like Local:3:O.Ch0Data.0 through Local:3:O.Ch0Data.31.

Sincerely,
Shawn Micha…[Read more]

Good morning David,

The (C) indicates the Alias For tag is a Controller tag.

Hope this helps,

Shawn Tierney,
Instructor at The Automation School

You're very welcome broni,

Shawn Tierney,
Instructor at The Automation School