Emil
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Posts posted by Emil
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Please send to support@unitronics.com:
table of results of the test for different output levels - nuber set in PLC and relevant current measured;
S/N of the units;
OS installed;
Maybe some picture of the test circuit.
Having this information, I'll investigate and will give you answers ASAP.
Thank you for your cooperation.
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Did you try the units on your desk or only in the field?
Can you try them in free of noise environment?
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Right, sorry.
Please take a picture of the display with low contrast and send it with S/N and value of SI9 to support@unitronics.com. We will investigate the problem.
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My advice - use Linearization function in Ladder (Special function without Ladder element - see relevant Help topic and example). Then, you will show the result in Engineering Units on display and will use it on your ladder - for compare and control.
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If this will not help, please post your application here or send it to support@unitronics.com and explain how to simulate the problem you face.
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We have such plans, but the development is not scheduled yet.
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V270?
and... yes, you need to add "arrow" buttons in one of the screens of V570. You can then use the function Step in Range to drive the pointer.
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Hi,
In VisiLogic V9.40, in HMI editor, on left side of toolbar, you can select between "Longest text" (default, as previous) or any of existing string libraries. I thhink this is what you asked about.
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Can you send the application ot support@unitronics.com?
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Hi Pascal,
Fully agree with your suggestions. We are discussing this idea very seriously. I'm pretty sure we will do it, but don't know how much time ti will take.
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The reason for Fatal error can be also strong picks of electromagnetic noise. Maybe something changed in the controller environment? New big machine? Or contactor in the cabinet started to perfomr worst, emmiting more noise?
You can try function "Check subroutine by error code" (VisiLogic > Edit menu). This function will point you to the subroutine, where the application stopped with this fatal error. This can give you some direction.
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Why from 0000?!
Please check the Slave address table for Standard Vision Division (VisiLogic > FB Modbus > Help > Slave addressing). The start address for outputs is stated there as 5000.
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Refresh display - store SI2 to SI2.
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In general, Vision OS is updating the screen. This "refresh" is slower than the scan time. If one wants to see the new string "immediatelly", he can activate on Laddeer this bit and the new string will be displayed at the end of the same scan.
As the human eye can difer immages with rate of 0.1 second and usually the refresh rate of display is shorter, it's difficullt to "see" the effect of this bit. It's used very rare, in very specific cases.
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MI1 will follow the analog signal, but MI2 needs to keep always the max value. It needs to be something in your logic. Can you send the project ot support@unitronics.com?
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Hi Russ,
It seems good idea to use V570 to drive the valve proportionally via PWM.
Some tips:
If you have Snap In module V200-18-E3XB, you must use one of the transistor outputs. It can be in PNP mode. You need ot use DO0 or DO1.
Wiring:
You need to supply first 24V DC for transistor DO - to pins V1 and 0V. Please see chapter "Wiring power supplies" in the beginnning of page 4 of the spec. You can find the spec in our site www.unitronics.com > Support page > Technical Library.
It seems you need to connect +Ve of the valve to O0 or O1 (see "Transistor outputs" chapter in page 5, follow PNP wiring diagram on left).
-Ve of the valve needs to be connectged to 0V of 24V power supply.
You must connect reverse diode to the valve. I recommend you 1N400x or even more powerful (1.5A or more).
Then, in Hardware configuration of your project, you need ot set High Speed Output (HSO). I recommend you to set constant frequency at 400 Hz and to change duty cycle from 0 to 1000. This way you will get the valve opening proportionally 0-100.0%.
Please let me know if you need further help.
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I can give you two ideas:
1. If you just want ot catch te max reading, you ccan perform simple logic, as follow:
Each scan of the controller you will compare the reading (in your case MI1) to a "buffer" - let's say MI2 (any other MI can be used too). If MI1 > MI2 (curent value greater than buffer), Store MI1 to MI2.
This way in the buffer (MI2 in our example) you will have the max value.
2. Make DT and store MI1 on it each scan. In some cases yu can fil lMI1 in vector (Vector Fill) instead in DT.
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What is the interface of your valve? If it's proportional, I'll expect some kind of analog input on it. If so - how this is related ot PWM?
Having the proper information, I hope I'll be able to provide you with the right help.
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Dear Lukas,
Do you have example of case, when you contacted Unitronics support team (support@unigtronics.com) and didn't receive answer?
We are putting a lot of efforts to answer all the requests and questions ASAP. If we missed something, I really need ot know and I beleive your feedback will help us to improve our service.
The list of operands, used in Enhanced web server will be posted soon.
We cannot open Enhanced web server password. As stated in our site, this is third party development. The author was very kind to agree to post it free of charge, but is not ready to open it. I think this is his right.
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Thank you for the interesting idea.
What do you expect from such application - surfing in your application while flying from Tampa to Sofia or having access to the system within the factory?
How many persons you think need to serf at the same time in the same system?
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Our software tools, in cluding VisiLogic, are running only under Windows.
I hope someone anyway has any "trick" to run it somehow on MAC and can help you...
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Hi Dave,
Your distributor already forwarded your question to me. Below is the answer.
If the controller recognize the extension modules on power up, it starts running with them. If, for some reasons (cable disconnected, module burned, pick of electromagnetic noise…), the controller stops immediately and issues message Expansion error. Someone needs to come and reset the controller manually. Usually in this case the person in charge is taking care to check the proper operation of the machine.
If the controller on power up/reset doesn’t recognize the expansion modules, it starts running without them and without any special message. This is done to ease debug/tuning procedure, when quite often the programmer has the controller on his desk without expansion I/O connected.
If there is option, that person in the field will run the controller without expansion modules (which I fully agree with Dave – it can be dangerous!), simple logic can be added, like:
SB2 SB90 Any MB
---| |-----| |------( )---
This “Any MB” then can be used in the application for relevant action – like stop logic and output relevant message.
Your commments are welcome.
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Hello Roland,
I'm in doubts someone in Forum can help you.
Please send your question to support@unitronics.com. Please state your country, company and your local supplier. We will see if there is a way to help you.
Networking conundrum with a 120 & 230
in Vision & Samba PLC + HMI Controllers & VisiLogic Software
Posted
Just short reaction (doesn't answer all your questions, but...):
Why V120 and not V130? V130 has both CANbus and Ethernet. It has practically the same dimencions/cutout and just a little biger front panel.