Rog
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Posts posted by Rog
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It just a blank program . Just trying to a reading through being online, looking at global tags. Thanks for the help.
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6 hours ago, Gabriel Franco said:
Try 4 instead of 40004 (and so on) in address.
Tried that as well.
4 hours ago, sgull said:Hi Rog
Status 3 indicates that communication has been made but there is a problem with the modbus command.
On the PC communication you are using read holding registers
On the PLC communication you are looking for "read input registers (4)"
change this to "read holding registers (3)"
The addressing should be ok as it worked on the PC program.
Tried this as well. Do I need to create some ladder logic to make connect and read?
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12 hours ago, Ausman said:
Any time you are working with a new device, always do an initial trial of comms using your PC as the basis, with one of the freely available modbus comms programs. It is far easier to find what works correctly doing it this way, and then you can transfer the known results into your plc work.
Thanks. For the advice.
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3 hours ago, pascal said:
about the type of operation -> just read holding register (type 3 of modbus)
I read my weather station every 10 seconds
my float type is here NONE, but this is made with a previous version of unilogic, where I had to make my own swap "thing"
So no program is needed, only configuration...
that's all you need to do....
If you have a incorrect status of your modbus slave, try to change the address you want to read....
sometimes the manual say's it starts at adres 1, but in modbus language it could be address 0 (or 2 ?)
Yeah still not having any luck with this. I am thinking I am trouble understanding the address location of my device.
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55 minutes ago, ORSO2001 said:
hi Rog,
post what you did (may will be enough some picture about how you set the modbus)...and in my opinion the "problem" is understand how the floats variables works...you need to transfer the two INT16 registers (2*2 = 4 bytes) in a BUFFER of 4 bytes then transfer this BUFFER in a REAL variable; let me say that in my test the 4 bytes 41-DB-72-37 give a temperature of 27.430770.
I haven't really done anything really. This is about as far as I got.
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New to using RS485 modbus. I am wanting to set up a new pH sensor using modbus. Not sure where to begin with this. I know i set-up unistream hmi as master. I want to read pH and then calibrate the sensor. I have attached the paper work from sensor. Can't make heads or tails out of it. A simple program would make difference to understand what going on with the addresses and such. Thanks for the help!
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I tried running as admin. Nothing. I did get it working. I had them on a separate partition. I guess unistream doesn't like. So I put them all on c drive. Works fine now. I have all older version.
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I recently got a new laptop with Windows 11. So I installed Unistream 1.28.26 worked fine. Did installed every version up to latest. All opening fine on install. Keeping the older version as well. Before anything said. I have applications out there that are built on older version. Due to how long it takes to do downloads and updates on slow 4g internet can be. I have to keep using older version. Older version don't open. The splash screen starts then says loading components, Then just disappears. Running old version on old laptop worked fine.
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Was wondering if there is remote i/o outputs with 4 to 20 mA output. The URA-0004W and URA-0008W only shows 0 to 20 mA.
Thanks
Rog
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So we have several of the unistream units out there. But recently the last 2 we built with the exact program on them. Are having issues with analog inputs. They started to jump all over the place. Tried different signal wires same reading. Multi meter run series and analog signal not jumping all over the place, just smooth reading. I don't know if it the modules or the last firmware update. Was wondering if you guys had any thoughts.
Thanks
Rog
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1 hour ago, Flex727 said:
Is this Vision or UniStream?
Unistream
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We been having issues this modules. Work for sometime. Then all sudden the module fails. Reading from the input starts to jump all over the place. It turns out one the inputs causes it. Removed the input. We have this set up to read from the source. Is there something causing this fail. We have replaced bunch of the AI8. Never have issues with AI4 modules.
Thanks
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Been having issues with this past couple days. Wondering if anyone else had it or found a fix for it. This 2 displays either appear behind the main application, and i can't get to them. Then I am locked out from getting to them. Then I have to control-alt-delete and then task manager and close it. Then reopen and the move application around to right spot to get to them. If not then I have to do it over till I can.
Thanks
Rog
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I was wondering what most people use for MQTT brokers servers. Which is the best for data analytics and collection?
Thanks,
Rog -
Thanks for the heads up.
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Trying to connect to a Azure sql server running the latest version of SQL server. I can connect using telnet and SSMS no problems. The unistream can connect to a local host using sql express. However when i connect using the same info. I get error which is the pic attached. I am kinda at a impasse. So what server on the unistream line compatible with?
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Thanks for the input, that helped to give me little more insight.
As for the seminars. There only one been lasted at the end Feb. Is there going to be more?
Thanks
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Hello Gents and Ladies,
I am new to the unistream line. Haven't had chance to take the seminar for it. It definitely little bit different then Visilogic line as for programming. Just trying to figure the math out. Some of it turning out to be zero. Just can't figure out what I am doing wrong. If you care for some points. Would like to see math examples.
Thanks
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As in flow meter? It is the SPX model.
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Hi all,
I have V350-35-R6. Trying to set-up high speed counter on using seamtrics s-series jet flow meter. https://www.seametrics.com/wp-content/uploads/LT-65200067r1.4-20180202-S-Series-Instr_0.pdf. I have tried pnp and npn neither work. I can get it to run on the DI8 modules(using PnP and resistor) and the snap-in modules using NpN on it using the same logic. I just curious if there anything wrong with what i doing wrong.
rs485 question
in UniLogic Software
Posted
This working, it connecting to sensor. Also the sensor wire A and B hook up to probe was backwards. But the unistream manual says D+ = B and D- = A. Switched this and it connected.