Flex727
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Posts posted by Flex727
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38 minutes ago, Joe Tauser said:
Open a command window on your PC and try to ping the PLC's IP address. That will tell you if your cable and basic IP configuration are good.
Joe is correct, but also keep in mind that the ability to Ping the PLC does not tell you if the Port assignments are correct.
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43 minutes ago, GonzaloRoldan_ said:
is there anyway to prevent (or protect) unwanted access to our PLCs?
The unauthorized download access would need to know the PLC Name. Think of that like a password.
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Make sure you've got all the assigned ports correct and appropriately forwarded. Do you have both port 3335 and 22 forwarded to the PLC?
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Moved to correct forum.
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8 hours ago, AlexUT said:
Disable "Use Ping on Discovery" option in "Project->Options" UniLogic menu.
Sounds like this is the key for UniStream. It's unnecessary for Vision (though SI 101 can play a role).
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I'm at a loss here. Are we mixing up the terms UniStream and UniLogic? @GonzaloRoldan_, says he agrees with @Ausman, but still sounds like he wants to go from his laptop to the UniStream PLC using the UniLogic software.
What I have done many times is download a program from my computer over the internet to a Vision PLC using VisiLogic. I have done this with PLCs as far away as 8,500 miles (Dallas, TX to Brisbane, Australia). It helps to increase the value of SI 101 first.
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Did you try the HMI element called "Time Function"?
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I do this all the time with Vision PLCs. I can't imagine not being able to with UniStream. Did you try it?
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Moved to the appropriate forum.
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@Rory, I split this off into a separate topic in the correct forum. Hopefully you'll get better and faster help that way.
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Good information. Thanks @kratmel!
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Maybe a little off-topic, but I need to have redundant power supplies (24V for the PLC) in a system. What is the best approach to this? Two power supplies running all the time in parallel or a relay that switches when a power supply fails? I'm not sure the relay would be fast enough to prevent the PLC and other related 24V hardware from going down.
Any education in this area would be greatly appreciated.
@Joe Tauser, do you have relevant experience with this?
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13 hours ago, Ausman said:
My impression is the client wants to scoot around picking up bits of info via a bluetooth connection on the roaming device.
Yes, this is my understanding as of now.
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This is all SOOO entertaining (seriously)! Unraveling one of the great mysteries of our professional lives.
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26 minutes ago, Ausman said:
I have the modules stashed away somewhere and will try to find time to give them a go on a 130 serial. This might take a week if you can wait that long.
No problem with the wait. Many thanks for the help!
26 minutes ago, Ausman said:The other relevant question is how are they wanting to do this? What will they be reading it with?
Yeah, that's the $64,000 question I don't have an answer to yet. The request is from my customer's customer and I haven't got the details yet. But I heard Bluetooth and thought I should at least get educated on it so I can respond realistically.
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1 hour ago, kratmel said:
find doc in french
http://www.pl-systems.fr/wa_files/bluetoothinstallation_022016.pdf
but no com module with BT on Unitronics site
Thanks, @kratmel. The person in the Forum post I mentioned was French, so this makes some sense. Apparently Unitronics was able to obtain radio electronics approval in France but didn't pursue anywhere else.
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1 hour ago, viscoelastic said:
I hate to show Ebay, but I have seen these before and that was the fastest way to find one that is cheap enough for testing/playing. How about a Bluetooth-RS485 adapter. And use modbus?
Good thought, @viscoelastic, though it looks like I'd have to obtain 5V.
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I have a customer who is inquiring about obtaining some data from a PLC using Bluetooth. searching the Unitronics website has been fruitless. Searching the Forum returned someone mentioning a com module V100-17-BT1, which I can find no other mention of.
Does Unitronics have any capability to communicate via Bluetooth?
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Try re-running Version Swapper. Also make sure the project file is on a local drive and not nested too deeply in the folder structure.
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12 hours ago, Joe Tauser said:
the scaling is spread over the whole 15 bit range, not starting with the 4 mA offset like we're used to
There is some Vision I/O that does this as well. Drove me crazy until I got confirmation from Unitronics support.
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I'm not sure how you can have a 24VAC digital input - makes no sense to me. However, can you just rectify the inputs to obtain 24VDC? Or use relays?
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I see your problem now. The 4mA value would need to be 13107, not 255. Try that.
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I split this off into a separate topic since it didn't belong where it was.
Regarding your question, the result looks correct to me. You are linearizing the value 11,159 to 0 - 10 from 255 - 65535. I didn't do the math, but 11,159 looks to be about 2 tenths of the way from 255 to 65535.
Edit: I see you've changed the attached picture since I posted my response. However, my answer remains the same. The linearization appears to be about right.
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Download a project via Internet
in UniLogic Software
Posted
Ugh, it's so easy to lose track of which forum I'm in. You are, of course, correct.