This tutorial gave me a refresher in converting from Rs Logix 500 program to Studio logix 5000.... The PLC SLC 5/04 to the newer 1769-L33 went nearly flawless. Thanks, Tim. Keep on posting.
Hey, Tim, thanks for the short tutorial on bit wise view of data elements. Rather than talk about a data type N and type B as being integers with bit positions, it might be more succinct to talk about them, when referring to their bits, as Words..... as in a 16-bit word.
From a software engineering perspective you're correct but in Studio they don't use the term word. They use SINT, INT, and DINT. It makes it clearer for the average technician.
@@TimWilborne, well, then, how do you explain the hundreds of references to 16-bit words in the Micrologix 1400 Instruction Set manual (Rockwell Automation Publication 1766-RM001l-EN-P - June 2019) being not familiar? The word "word" is fundamental to the description, on page 41, of the addressing scheme used in the 1400 and likewise in many other AB PLCs and I/O modules. Ask yourself, when is an INT not an integer? When it is a Boolean, but then you try to explain the bits of that "INT"? For me, it is clearer when embracing the concept of 16-bit words. And yes, I am coming to this from a predominantly software background, so I may be exposing my confirmation bias. But that's my bit for what its wordth.
I explain it just as I did in the video 😂 Remember this is on how to relate them to Studio 5000 and in it, they are a SINT, INT, and DINT. You are not wrong, it just isn't the goal of this video.
Ok, you sent me here ......now it opened another can of worms for me! LOL.....I'm ok, digging in ....eat the elephant one bite at a time. Thanks for the transition from 500 to 5000.....that was good to see.
So does a 1 in bit 15 of an integer in 5000 indicate that the value is negative, and a 0 indicate the value is positive? If not, how do you know if the value of the int is positive or negative? (Other than looking in the value box)
Not exactly. It has a value of -32,768 which makes people think it is a sign bit. I talk about it in this video. th-cam.com/video/4HUKtYfoR-8/w-d-xo.html
Funny you should ask, starting next year they will be the 3rd week of the month on Wednesday's at 11am EST. We will have a live stream this Friday, 11 am EST to announce that, a few other things, and do a general Q and A. The link for it should go out tomorrow but you can always find it at twcontrols.com/live
This tutorial gave me a refresher in converting from Rs Logix 500 program to Studio logix 5000.... The PLC SLC 5/04 to the newer 1769-L33 went nearly flawless. Thanks, Tim. Keep on posting.
Glad it was helpful, once you understand the difference in addressing, conversions come easy.
OMG my predecessor created a bunch of tags in an L61 called F8 / N7 / B3 MSG'd from a PLC5 . I just discovered it this week and Its driving me nuts !
Yep, it is painful and difficult to fix in hindsight.
Hey, Tim, thanks for the short tutorial on bit wise view of data elements. Rather than talk about a data type N and type B as being integers with bit positions, it might be more succinct to talk about them, when referring to their bits, as Words..... as in a 16-bit word.
From a software engineering perspective you're correct but in Studio they don't use the term word. They use SINT, INT, and DINT. It makes it clearer for the average technician.
@@TimWilborne, well, then, how do you explain the hundreds of references to 16-bit words in the Micrologix 1400 Instruction Set manual (Rockwell Automation Publication 1766-RM001l-EN-P - June 2019) being not familiar?
The word "word" is fundamental to the description, on page 41, of the addressing scheme used in the 1400 and likewise in many other AB PLCs and I/O modules. Ask yourself, when is an INT not an integer? When it is a Boolean, but then you try to explain the bits of that "INT"? For me, it is clearer when embracing the concept of 16-bit words. And yes, I am coming to this from a predominantly software background, so I may be exposing my confirmation bias. But that's my bit for what its wordth.
I explain it just as I did in the video 😂
Remember this is on how to relate them to Studio 5000 and in it, they are a SINT, INT, and DINT.
You are not wrong, it just isn't the goal of this video.
Ok, you sent me here ......now it opened another can of worms for me! LOL.....I'm ok, digging in ....eat the elephant one bite at a time. Thanks for the transition from 500 to 5000.....that was good to see.
You're welcome!
So does a 1 in bit 15 of an integer in 5000 indicate that the value is negative, and a 0 indicate the value is positive? If not, how do you know if the value of the int is positive or negative? (Other than looking in the value box)
Not exactly. It has a value of -32,768 which makes people think it is a sign bit. I talk about it in this video.
th-cam.com/video/4HUKtYfoR-8/w-d-xo.html
@@TimWilborne thank you. I watched the video and it's making more sense now.
@@nicholaswilson525 Glad it was helpful!
when do you do your livestreams?
Funny you should ask, starting next year they will be the 3rd week of the month on Wednesday's at 11am EST. We will have a live stream this Friday, 11 am EST to announce that, a few other things, and do a general Q and A. The link for it should go out tomorrow but you can always find it at twcontrols.com/live