Togadude

This is incredible!

In the Siemens world, it's called a 'symbol table'. All you need to do is upload the program from the PLC, copy the symbol table from the program on disk, then paste it into the uploaded program. Or, you can export/import the symbol table as well.

We use ProfiTrace. It works well in my opinion.

Two thumbs up from me We have 8 of them in machines older than 5 years. Not a single problem yet!

No, you need a PPI adapter.

Not that I know of. If you post the code, I can convert it for you.

Did you archive/retrieve the project? If not, you need to archive (zip) the project, then retrieve (unzip) the project using step 7's zip program.

The human mind is a beautiful thing.......Kinda makes me wonder what civilization will think of us "primitave" beings a few thousand years from now!

Scenario: I set up my own server and through my ISP, get a static IP address. Customer is located anywhere in the US. I install a router and managed ethernet switch and set up a VPN dedicated for the equipment that is installed. Question: At customers location, do I have to go through there router first? Or can I just install a hub and totally bypass there LAN? Would that be like tapping into the power companies lines before the meter?

Sorry for the confusion. The scenario is connecting from a server via the internet to the VPN. I was just wondering if its possible to avoid the "IT Nazis". It looks like the only way is to go through the customers local ISP. Thanks for the info.

Here ya go Susan. I was able to dig up version 2.11 in the archives. The program only views with STL though. Its a small program so translating to ladder should be pretty easy. ai931121.zip

I had a similar problem awhile back. I uploaded the program from the PLC into version 4.x and was able to copy and paste the symbol table from the older version.

I find the panel schedules in excel very useful. Theres other goodies as well... www.dcengineers.com/downloads.html

Pockets ---- The co-worker that no matter whats going on, always is standing there with his/her hands in there pockets.

After begging and pleading, kicking and screaming at my boss for some "advanced" PLC training, I got some "advanced" S7200 training from a distributor. This "advanced" training went like..."PLC stands for...", "this switch puts the PLC in run mode", "this is how you make a NC contact", etc... You get the picture. I have decided to try and teach myself some "advanced" PLC instructions. I read Hugh Jacks tutorial and it was very informative, but you cant ask a book questions or pick its brain. I'm at the point where I feel comfortable with contacts, coils, timers and counters but get confused when dealing with memory locations (shift registers, math instructions, etc.). Ive been reading manuals, forums and it just doesnt "click". Its like i need to hear the right thing to make it all come together. To say "AHHHHHHHH, THATS IT! now it makes sense!" Anyway, I downloaded the free DirectSoft5 software and then downloaded Peter Nachtweys sliding mode control program. Could someone take the time and please explain to me, in as simple terms as possible whats going on from rung 6 down? I would be greatful

Thanks for the reply Sleepy. Maybe I'm in over my head trying to understand that program.....let me make an example. Lets say a number is entered into an HMI to keep a cooler a certain temp. Does the PLC see that an HMI is there and request data? or does the HMI just put data in a PLC's memory location? And am I right in assuming that that number (say 40f) is converted to binary? And what if the actual temp. is to be displayed on the HMI, how is that calculation made and how is it sent to the HMI?

Having a "real" load (coil, lamp, etc.) on an output shouldnt affect much. The only times I have had problems with leakage current is when used with solid state devices (SS relays, inputs to other PLC's). I had to use load resistors or switch to a mechanical relay to remedy it.

HAHAHAHA Its used in the printing industry to splice a new roll of paper before the other runs out.