Flex727
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Posts posted by Flex727
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Moved to the correct forum.
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Post your program here so we can help you.
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You're looking at a blank project file because you didn't open Joe's file (notice it says "Untitled" instead of Statemachineexample"). Make sure Joe's file is downloaded on your hard drive then open it from within VisiLogic.
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5 hours ago, Saragani said:
Isn't the favorites in VisiLogic behave the same?
No, in VisiLogic the favorites are saved with the project and are specific to the project, as they should be.
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7 hours ago, Saragani said:
The favorites are part of the computer (not specific to a project), so if you open a different project, then you have the same PLCs appear in your favorites.
This is terrible in my opinion. Connection settings are project specific and need to be saved with the project.
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I just discovered that if I have Ethernet connection "Favorites" saved in a project file then open that file on a different computer, they are no longer there. Am I missing something? I am using version 1.28.34.
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Try this one instead. Also, there are example projects that came with your VisiLogic installation.
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From the spec sheet:
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Yes, you are correct. I've also found it a bit confusing at times as some of the Unitronics modules give the full range for 4-20mA (like the Siemens you describe). But the IO-AI8 definitely shows a value of 3277 at 4mA in Normal Mode.
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In Normal Mode, it has 14-bit resolution, so the 4-20mA range is 3277-16383. In Fast Mode, it has 12-bit resolution, so the 4-20mA range is 819-4095.
All the technical specs for the Unitronics PLCs and I/O modules are readily available on the Unitronics website.
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No, it is not possible to pause a program. You're not thinking in Ladder Logic. There is a Watchdog Timer that will shut you down if the program does not execute continuously. What you must do is write your program so that when the pressure goes too high the correct actions are taken, such as preventing valves from opening. Pausing timers is a different issue. Only an Accumulating timer can be paused. Depending on what you're doing, if you need a timer to be paused, a timer may not be your best option (maybe a counter would be better). Though it is possible to Store and Load timer values if needed.
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1 hour ago, ORSO2001 said:
I just update one of my project, that is working perfectly, from version 1.26.90 to 1.29.111
What was the reason for updating?
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I have a good suggestion. Whenever I am developing a project for UniStream, like most programmers I will be updating and downloading, and testing, frequently during program development. Unlike VisiLogic, UniLogic insists that the project be compiled and compared to the project in the PLC before going online. This can take some time. However, if I've just downloaded the project, then all that has already been done and now I must wait for it to do it again. How about adding a selection or checkbox, or something, to the download options that when selected allows UniLogic to immediately go into online mode after the download, thus saving that lengthy repetition?
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Have you looked at the pinned topic in this forum?
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5 hours ago, AlexUT said:
There is a wrong use of IDLE function.
Totally agree with this. However, that does bring up a question: what would be a correct use of this function? I can't think of any.
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You have not given us enough information to help you. Some items to check:
Are you certain you are storing the new value to the PRESET?Are you certain you are calling the subroutine this ladder rung is in?
Do you see the Preset change in ladder when you are online?
Your best help will come if you post your program here.
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1 hour ago, Gabriel Franco said:
I just realized that npn/pnp field exists. I never had to change it before. Is it really relevant or just to visual indication?
I want to know the answer to this also. I've never found it to actually do anything. If you change that setting and nothing else, VisiLogic will indicate that the program you're downloading is identical to the one in the PLC and abort the download. I say it's just a convenient visual indicator for the programmer/user.
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"UNcheck a message..."
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I've wondered that, too. I've upgraded the firmware many times by Ethernet and never had an issue. Are they worried that the firmware upgrade might wipe out the Ethernet IP settings, thus causing an interruption in the process?
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By the way, please do not double post. This is a moderated forum so it can take some time before your post appears.
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Check the top pinned post in this forum.
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By the way, you can change the entry in the box labeled "Opis:" to anything you want. It will be above the keyboard when the user is entering the number. You could say something like: "Enter the value for pressure (max 2.5 bar)".
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Yes, when the user inputs the number it will look to them that they are entering 2.5, however it will store the number 25 in the register.
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Scada comms problem
in Vision & Samba PLC + HMI Controllers & VisiLogic Software
Posted
In addition to kratmel's excellent advice, are the PLCs the Master or Slave to the SCADA? If Master, then there are some Ethernet System Operand settings that can improve connection recovery. Also, there are some ladder code techniques that will auto-reconnect when the connection is lost. Can you post your program here?