[How does Vector:Copy handle overlapping source and destination]

5 hours ago, kratmel said:

Yes, it is tested solution. Joe Tauser post this solution in forum topic.

I use it for select powder coating gun position when different item is moving on a conveyor and mesuring station is before powder guns.

I also manage bit vector copy for ON-OFF gun when no item is placed on conveyor.

On this screen you can see illustration of automatic program selection via bit vector copy. Green LED - conveyor sensor, Blue - item sensor.   

 

Alright, thank you for your help.

[How does Vector:Copy handle overlapping source and destination]

5 hours ago, Flex727 said:

If you have any Vision PLC handy, you can test this in about 2 minutes.

Unfortunately, I do not have one at hand :( And even if I did, I would not trust empirical tests like this, since they can succeed based on an undefined behavior.

[How does Vector:Copy handle overlapping source and destination]

Hello,

I have a vector of MIs starting at MI 250, containing at most 20 elements. It is supposed to act like a FIFO buffer. There is an array of objects moving on a conveyor. Whenever an object triggers a sensor, some integer information is stored at the first available MI in the vector (there is another variable that indicates the number of elements in the vector, not especially relevant to this question). Some time later, when the same object triggers a second sensor, the data at MI250 is to be read, processed, and the vector data is shifted to the left, effectively consuming the first element. I.e. element 1 overwrites element 0, element 2 overwrites element 1, 3 overwrites 2, and so on. Can this be achieved using a Vector: Copy block, as in the attached image? Is it safe to do, am I guaranteed that the copy operation will be executed in the order I mentioned? If this is not a valid way to do what I want to do, please tell me an alternative way.

["Invalid procedure or argument" when I try to communicate with JZ20-R31]

27 minutes ago, Ausman said:

OK.  Time for me to get Zzzzz, but in the meantime ensure your A/V isn't interfering.  And wait for someone else to chime in.  No doubt my subconscious will think about this all night....thanks so much!!!

M$oft has an annoying habit of breaking things with W10 updates.......and your system likely got one in the last few days if you let it.  Patch Tuesday.

cheers, Aus

It was the Windows update! After removing the update from Tuesday, everything works. Thank you very much!

["Invalid procedure or argument" when I try to communicate with JZ20-R31]

5 minutes ago, Ausman said:

Did you install using right click run as Admin, and then once installed also set the main U90Ladder .exe to run as admin as well?

cheers, Aus

Yes, I have done that.

["Invalid procedure or argument" when I try to communicate with JZ20-R31]

Hi everyone,

I am trying to download my project to my Jazz JZ20-R31 PLC from U90Ladder. When I go to Controller -> M90 OPLC Settings, I click "Get Version" and I do get the correct data. "Get Time & Date" works as well, and so do the other PLC -> PC functions it seems. But when I click "Set Time & Date" or "Reset" or other PC -> PLC functions including "Download", I get an error message saying:

Quote

Run-time error '5':

Invalid procedure call or argument

When I click "OK" the program closes. A colleague of mine has also installed U90Ladder following the same procedure I have, and everything went smoothly for him (we used the same PLC). This leads me to think that the problem is system-wide for me. I am using Windows 10.

Thank you.

Haris