AlexUT

Hi Otto, Please always provide PLC type and other information to have better answer. Be careful with System wariables. You should understand what the wariable doing. Othervice PLC will enter endless loop or stop works. In your case it is useless to use SB 24. When you power-up PLC, it make reset but not initialize Memory Registers. This make possible to save all variables status as it being before power-cicling. To have a Company logo displayed for specific time, you need to prepare "! Start-Up Display" with your Company information and run timer at start-up(power-on). This timer, when ends, will call "Status HMI Screen". You will do this from Menu "Utils->HMI->Load HMI Display". SB 16 - "Touchscreen is Active (has been touched] (Touch models only)", indicate "touch". You will analyze it and call "Status HMI Screen" before timer ends. Believe, this will help. BR.

Hi Russel, Please provide more information about OPLC model, I/O configuration etc. If you use Jazz - take care to connec tall n/p or p/n configuration to 0V or +V in accordance to your choice. B.R.

Hi, Meaning is +-3% of full range (20 mA or 10 V). B.R.

Hi, Please add a little bit details about what you wants to realize. It seems that nobody understand your idea. BR.

Hi all, Please take care to use null-terminated strings for file names. With this precaution everything will work. Some remarks about this (and others) topics: -When you ask for help, please provide as much as possible information, preferred to attach simple project. -Answers without looking into project code will be useless and just spend a time. Unless you know exactly what happen. To whom it is interesting - fixed project attached. It is for VisiLogic 9.4.0. SD_Card_Trend_Read_Write_Append_fixed.vlp

Hi, Please send you request to support@unitronics.com to have fastest replay. B.R.

Hi, Last time a lot of peoples comply at different forums about CD cards of wrong capacity from e-bay and other internet stores. As a first step, I recommend you to check your SD card for real capacity. Simple check will be done by program, which you can download from following link: http://fightflashfraud.wordpress.com/2009/06/18/fake-capacity-32gb-sd-card/ * This link is for information purpose only. I have no responcibility about any side effects. You will use this software at your own rick. If this software indicate wrong capacity - you CD card cannot be used with OPLC, and should be replaced. B.R.

Hi, UAC should be disabled, and current user should have an administrative rights, or application should be run "As Administrator".

Hi, Please update Operation System files from Menu "Hepl->Check For Updates->Operatin System". * O/S 3.3(20) is a little bit outdated. Finish, update System Files. Download an empty project to OPLC. At Visilogic open Menu "Connection->Communication & OS", then select 4th from left side folder and click on "Check". * Use Com Port 1 for OPLC System Files update. Process update as required. Init and reset OPLC. Download your application to OPLC and test again. Does this corrected error? New VisiLogic Ver. 9.4.0 is available for download. I tested under this version (O/S 3.6(03)), and found that after timeout SI 83 = 3, SB 83 = 1 for both conditions you explained. * I used Com 2 for tests. B.R.

Hi. You did not mention OPLC model. Next explanation is for Unitronics Enhanced Vision Series. VisiLogic have no such embedded function. Easiest way is to show remaining time between current RTC (Real Time Clock) HH:MM and indirect off-time HH:MM, when current time is inside on-off interval. But representation of both is different: Indirect time function use HexaDecimal(BCD) format. 12:45 is 0h1245. SI 31 contains RTC current time HH:MM in a Decimal format. 12:45 is 1245. Timer preset contains a number of 10 mSec intervals (ticks). UTC counts in ceconds from pre-defined date. *See UTC help. You need to fill start and stop time in format of RTC, like SI 30 - SI 33 use. Use RTC-to-UTC conversion of start, stop and RTC, you will find remaining time between RTC and off-time in seconds. Then display this remaining time is trivial. B.R.

Hi, Yoy have an errors in your program. These errors in some conditions will lead to endless loops and then Watchdog. Errors are in Read Table functions, in Linearization, and may be oter ones. Please review and correct errors and then test program again. B.R.

Hi, How frequent Watchdog happen? Are there the same numbers on the Watchdog screen? Can you connect it to any events? Add description of Watchdog. B.R.

Hi, VB limits number of COM ports to 16. So VisiLogic and VB Communication Driver have the same limit - 16 COM ports. Last dotNet driver will use up to 256 COM ports. You can download it from unitronics Support site: Unitronics.ComDriver Compiled Binaries Ver_1.0.0.47.zip

Hi Fraen, In U90Ladder there is no support for Force function to change status of Input/Output. This advanced feature works only in VisiLogic.

Hi, Please give some more detail. Add capture of "not always comfortable" comment. What OS and system fonts do you use? Add capture of display settings from "Display Properties->Settings->Advanced".

Hi, Maximum load for current output is 500 ohm. As Joe say, for 20 mA output current voltage at 500 oHm resistor is: V=R*I, V=500*0.020=10V. It never will be more. And for 100 oHm resistor voltage should be 2V.

Hello, For VisiLogic and U90Ladder Ladder's Element Descriptions will have 1 line up to 99 characters. For U90Ladder Ladder's Element Description inside element is centered and show middle of description string. When pointing to Element by Mouse, full Element Description pop-ups. For VisiLogic Ladder's Element Description inside element show ~20-24 first characters of description string. When pointing to Element by Mouse, full Element Description pop-ups. Multi-string Element Description is not available. If you have significant difference in result, make short demo application, add description in what version of VisiLogic/U90Ladder you see this, what is your OS (XP, Vista, W7), 32/64 bit, used language etc. and send to support@unitronics.com. Then we will do test to find problem. B.R.

Hi All. I tested attached application "Pressed Test.vlp" under VisiLogic 9.3.1 (which is acceddible to download for a monthes). V570 O/S: 3.4(40) BOOT: 2.2(08) BinLib: 1-1.10(01) * Update files at VisiLogic ftom Help Menu->Check For Updates->Operating System * Create an empty project and download it to V570. * Check and update System Files at connected OPLC. * Init and Reset OPLC. Attached modified application "Pressed Test_2.vlp" I see no problems with HMI objects. I did tests with V1210 as well, but found no problems. Does anybody have this problem with a last VL 9.3.1? Pressed Test_2.vlp

Download it to OPLC and check how it looks at the screen.

Hi, By use Menu option <Burn "Upload Project"> you can download and save your project into PLC flash memory. Then you will upload this project from PLC flash memory to VisiLogic. This message say, that you project size exceed maximum size available for "Upload" option. You should always have backup copy of your project. If you want to use "Upload" option - you ned to lower number of HMI Displays. But you will add more HMI Displays without possibility to use "Upload" option.

As other members wrote, In accordance to VisiLogic Help, "Communication FBs->MODBUS->Slave Addressing", for Enhanced Vision Series, ML registers address space starts at 0x7000=28672. You need to add an offset 40001 to this address. Finally, to read ML 0, address should be 40001+28672=68673. Next ML address (ML 1) will be 68673+2=68675. Does it works for you?

Hi, Keith provided a very good example. I will recommend to use Positive or Negative transition contact to reset counter. Othervice counter will be zeroed all time, until I 0 is active.

Hi, This is the case you should contact your distributor. If there is no distributor - send your request to support@unitronics.com and we will give your advice.

Yes, you can use it in all configurable modes allowed by specification. You have no way to reset counter like in snap-in module. And it will be mapped only to MI. BR.

Hi Fernando, MI is not a Database, it is a Memoty Integer. There is a backup batery to back up memory content, which include many other data types. As a regular MIs are accessible after power cicle, but some modes of startup/reset will make init for internal memory. So there is no yes or no. Answer is - it may have previous value and may not. You need to know exactly what you need to implement, and there are other methods to save memory registers status. I recommend you to start from some basic things and then go forward. There is a forum topic which partially answers how to learn PLC. http://www.unitronic...sp?TOPIC_ID=527 But I recommend you download VisiLogic from Unitronics web site. It includes free examples and help. And it is free. I will recommend you to download next 2 files from Unitronics site and start to read. http://www.unitronics.com/Data/Uploads/VisiLogic_Software_New/VisiLogic%20-%20Getting_Started.pdf http://www.unitronics.com/Data/Uploads/VisiLogic_Software_New/VisiLogic%20-%20Ladder%20Programming.pdf There is an e-learning link: http://www.unitronics.com/Content.aspx?page=e-Learning I wish you success.