Gabriel Franco
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Posts posted by Gabriel Franco
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The customer HMI must have VNC client capabilities, then it can function as a remote display mirroring the display of the Unistream, and yes, the Unistream can be operated from the customer HMI. This option requires an Ethernet connection between both sides.
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I definitly wouldn´t install the PLC and its IO cards in the same cabinet of such amount of VFD.
Some advices (assuming there is only one cabinet):
1. Improve grounding inside the cabinet: use shorther, thicker ground cables for all devices, ensure analog cables are shielded and properly grounded.
2. Install a metal plate to separate the IO section from the VFD section.
3. Follow the wiring recommendations of these links:
https://support.unitronics.com/index.php?/selfhelp/view-article/unitronics-vfd-quick-start-guide
https://www.unitronicsplc.com/Download/SoftwareUtilities/General_Wiring_Guidelines.pdf
4. Change carrier frequency of some of the drives.
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Did you format the SD card using the recommended software before creating the image?
I followed the procedure some time ago and had to use a different software to format the SD (I might be wrong and had to use it for another purpose or another PLC brand). Anyway, here is the software I have:
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I don´t use hardware scaling. I use linearize ladder function block instead.. The reason: it can be field and on the fly adjusted just changing tag values (X and Y)
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How are you scaling the input?
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Layers: good idea, I haven´t used them.
Other option: right-click the element and z-order it
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28 minutes ago, Fotonic said:
So if I need to add a pop-up window on every motor on a synoptic screen I'll have to place all the custom controls on screen and associate tags for animation/logic.
Correct.
28 minutes ago, Fotonic said:In this case, to avoid an over crowded HMI screen in the Unilogic editor what's the best strategy?
Place all the pop-ups on a dedicated layer as suggested by @Joe Tauser to show/hide on necessity while editing the regular HMI elements?I place all the controls stacked on top of each other. By pressing the motor image (or the button or whatever you use to pop-up the control), reset all visibility tags and set the desired one.
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You mentioned the manufacturer sent you an application update. You can reset the PLC to its factory default and then load the application from the received file.
To factory reset, follow the instructions.
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I designed this Custom Control to control reversible motor. It has motor name, modes (O, P, M) , fwd start, rev start, alarm messages, alarm reset, interlocks status, motor status, close button.
Every part is attached to a tag (part of a struct defined to control a motor). e.g, up button:
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Then, add the custom control to the screen (in this step, you cannot modify its size), set the specific motor tag (e.g. input conveyor #1) and use a tag visibility to show the control. Set that tag when pressing the device you want to control.
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This task can be accomplished by use of "HMI Custom controls" The advantage: you design it just one time and re-use it as many times as needed.
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Remote access uses urc file to display some elements.
Search for "urc" in the help for instructions.
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Modbus addressing can be a little tricky, in your case it could be offset by 1, so try address 0.
It´s higly recommended to use any PC Modbus software for easy testing.
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To read from the scale head use RHR #3. The start address must be 259 rather than 40259.
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The simple answer is no, tag values are not lost.
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If the manufacturer offers EthernetIP, then you don´t need those ladder functions, just a few steps to configure the PLC as Ethernet/IP scanner importing the EDS of the device. It will create the structures and IO tags required to comunicate to/from the valve controller.
Take a look to the examples that can be downloaded from https://downloads.unitronicsplc.com/Sites/plc/Unilogic/UniLogic_Examples.zip
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Here the solution.
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Verify that the total number of rise/fall bits used is not greater than allowed.
Use View|rise/fall summary menu
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It is not very difficult to connect to the PLC and download the program to it (from Unitronics' perspective, download is from the PC to the PLC). You must have a USB mini B cable or serial cable and a USB-RS232 converter. But downloading the program doen´t load values to the parameters, as Flex mentioned. Parameters are saved in a separate file (txt or bop file) only if someone did it intentionally.
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Have you considered using a weight transmitter instead? It has been a cost-effective solution to me
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Some considerations:
1. You are skipping row 0. First Data tables row is 0. In your case, limits must be 0 ... 299.
2. ML9 returns the FIRST row where the InvoiceNO is found, or returns -1 if not found; not the number of times InvoideNO is present in the DB.
3. You don´t need to use find extended FB.
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According to the Alicat manual, "The device setpoint should be sent as a 32-bit IEEE floating point value. Setpoint values must be sent together in a Write Multiple Registers command. Any writes to only one half of the setpoint value will cause an error. Setpoint is ignored on devices without a controller".
Are you fulfilling this requirement?
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Try changing the action trigger. To speed up the response, use press trigger mode.
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How quick? I have buttons responding in less than a second.
Some time ago, I wondered how fast VNC (I use VNC viewer V.6.19.107 from Real VNC) responds connected to a USC, then tested using the PLC as a stopwach and got an average of 500 ms response time.
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This topic may help you partially:
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🪟 Custom pop-up windows in Unilogic HMI
in UniLogic Software
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I haven´t noticed any lag when loading those screens or interacting within them.
What I´ve gotten are compile warnigs about exceding HMI elements, but this can be fixed by making some changes to the Unilogic configuration file.