First of all, i would like to thank you for your videos. I´m sure that they are helping so much people (including me). I'm working with software unit and facing one issue that it's not clear for me. I've created a relation (using a global DB) and everything were working well. But, i've needed to include more informations inside this DB. After that, i've tried to download the modification. In this moment, a error mensage shown up: A "Consistent download of the selected units(s)" is not possible because some relation target have been changed. Download the program with the command "Download > Software (with related software unit)". Could you help me to understand this problem? Thanks.
Thanks for all the good videos, could you please do more videos about sequential plc programming and how a good control design should look like? Keep up the good work!!
I make a simple test and for me it Software Unit act strange. When I make FC/FB outside SU (in main folder) I was unable to use it inside Software Unit. But when I make SU "Main" and make relations to it in every other SU, then I can use those functions. Why Siemens make those limits? What was the plan/ concept for SU? Every device has it's own SU and outside SU is only safety program and comunications with other PLC? Do you know any programing standard (Daimler Integra, BMW TKB, VW, SiCAR etc. ) that will implement SU in the future?
Could you show in your next video the functions, which are working with optimized block access. For example when you must to use indirect Adress you must use Anoptimized blocks access, for tcp/ip communication you also should use anptomized blocks access. Why we need it optimized blocks access?
Very interesting , in the first glance , it lets keep your programming structure more coherent in one programmable logic unit, which you can manipulate independently. But from other hand , in some way , is it not similar to libraries concept ??
I think you can also use libraries to work on single parts (which is much easier and less cluttered), but then you don't have the "security layer", because you could accidentially use a global variable etc. and affect more than just your part.
@@hegamurl7434 I made some test and cannot use an UDT inside global DB as a relation, its a pitty. Thought of using it for a project but it wouldn't work with our standard software. Maybe in V18 or something when it gets better, we can only hope.
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Last week I was wondering what the software units are, and now I know. Thanks for good video
Best explanation about software unit. Thank you so much.
First of all, i would like to thank you for your videos. I´m sure that they are helping so much people (including me). I'm working with software unit and facing one issue that it's not clear for me. I've created a relation (using a global DB) and everything were working well. But, i've needed to include more informations inside this DB. After that, i've tried to download the modification. In this moment, a error mensage shown up: A "Consistent download of the selected units(s)" is not possible because some relation target have been changed. Download the program with the command "Download > Software (with related software unit)". Could you help me to understand this problem?
Thanks.
Danke für die hervorragenden Lehrvideos! Eine Frage zum Merkerbereich. Kann man auf den Merkerbereich aus einer Unit zugreifen?
Thank You ! Very useful for learning !!!
great video but - is it necessary to add OB block to every software unit or is it just optional. What do we gain if we add OB to the Software Unit?
Your lessons were very interesting, thank you!
Thanks for all the good videos, could you please do more videos about sequential plc programming and how a good control design should look like?
Keep up the good work!!
I make a simple test and for me it Software Unit act strange.
When I make FC/FB outside SU (in main folder) I was unable to use it inside Software Unit. But when I make SU "Main" and make relations to it in every other SU, then I can use those functions. Why Siemens make those limits?
What was the plan/ concept for SU? Every device has it's own SU and outside SU is only safety program and comunications with other PLC?
Do you know any programing standard (Daimler Integra, BMW TKB, VW, SiCAR etc. ) that will implement SU in the future?
Could you show in your next video the functions, which are working with optimized block access. For example when you must to use indirect Adress you must use Anoptimized blocks access, for tcp/ip communication you also should use anptomized blocks access. Why we need it optimized blocks access?
Very interesting , in the first glance , it lets keep your programming structure more coherent in one programmable logic unit, which you can manipulate independently. But from other hand , in some way , is it not similar to libraries concept ??
I think you can also use libraries to work on single parts (which is much easier and less cluttered), but then you don't have the "security layer", because you could accidentially use a global variable etc. and affect more than just your part.
Thank you
Thanks alot
That means we can't able to use System memories and clock memories from PLC hardware.
mapping to globalDB...more job
I have seen one ads.
Expect another video
IT looks interesting, but the relations are way to limited.
Definitely is limited, but better than nothing! In some cases very useful
@@hegamurl7434 I made some test and cannot use an UDT inside global DB as a relation, its a pitty. Thought of using it for a project but it wouldn't work with our standard software. Maybe in V18 or something when it gets better, we can only hope.