AlexUT

Raspberry PI serial ports are TTL (unipolar, low level). You cannot use it for direct connection to other non-TTL devices. Communication to PC use RS232 bipolar signals. You have to use any available TTL-to-RS232 converter, either shild, HAT, or other one. When hardware interface will be connected, you can continue with PI and PLC programming. You can read details at next link: https://elinux.org/RPi_Serial_Connection#:~:text=The Raspberry Pi serial port,the other%2C and vice versa. B.R.

Download Cashe by use of WiFi. If this is not possible - test if you can download cache in Remote Operator (PC) and look if there are errors pointing to specific picture. This points to bad picture image at PLC memory (and in project). You have to replace damaged image and reload all project, include images, and test cache load by Mobile Remote Operator.

Hi Moran, Unitronics PLCs are industrial, and wotking with 0V as a '0' signal, and 24V as '1' signal. See details in Help. Unitronics PLCs does not support SPI and similar proticols, as these protocols use TTL level signals. If you have to support SPI protocol, you have to use converter. B.R.

Access remotely by VNC and access UniApps at Virtual Display. B.R.

Hi all, Unitronics continue to improve everything related to new Router, include receiving SMS. As this Router is new, it will take some time to make all functions working as supposed. B.R.

Hi, One more tricks: With a "Windows" key on keyboard - press and hold "Win+Shift" then press on Left/Right arrow. This will move active pop-up window between monitors (left, right, left, etc.). Hope this is a shortest .trick, which does not clean or change any program settings, or Registry. *Sometime you cannot close VisiLogic, and this is an invisible window keeping it open on "virtual" display. In this case programmers "kill" VisiLogic task and start it again. Now correct this by "Win+Shift" then press on Left/Right arrow. Hope many programmers will enjoy this "trick". B.R.

Please post your test project. It may include errors in Ladder.

kratmel, Why you supply link to France site? Original documend will be found at Unitroinics Technical Library. It is updated from time to time. https://www.unitronicsplc.com/wp-content/uploads/2020/06/UniStream-Remote-I-O-User-Manual.pdf

Look at Unitronics Helpdesk artille: Vision PLC battery change without losing data https://support.unitronics.com/index.php?/selfhelp/view-article/vision-plc-battery-change-without-losing-data

1. Project is not erased. 2. Reset equivalent to power cycle. 3. Initialize & Reset clean ALL memory registers and make Reset. *&Data Tables are not affected by Reset, nor by Initialize & Reset. You can find all this information in Help file. B.R.

To be able establish connection from PC to PLC: 1. It is recommended to initialize all 4 sockets to default values, as in Help. 2. PLC Socket 1 TCP/Sever(Slave) Port 20256. 3. Connect from VisiLogic to PLC IP Port 20256. When online, or download, port status should be "Connected" and PCOM.

Hi, Set SB 168 as follows: Make Init for all 4 sockets to default port numbers. *Check in INFO mode sockets settings and port numbers. B.R.

Ausman, TCW122B-RR looks like a device for garage - isn't it? The other one is not realized yet. So, both are not for industry use... B.R.

Hisanyc, Review Unitronics Helpdesk Articke: Calculate Total - Totalizing Hope this is what you need. B.R.

Unitronics Analog Inputs are sinking and use 0V as common. Sensor you refer require external power, so it is sinking as well. To connect to Unitronics Analog Inputs, you have to use special adapter/transmitter/current loop repeater. May be Forum Members used such devices in projects. B.R.

No, it is not Cinterion. It is completely new with a lot of features. B.R.

Hi, There are number of cellular modem/routers allowing to use TCP commands. Some use URL format. It depends of model. Unitronics introduced new Routers which integrated with UniStream to send/receive SMS. See "Accessories" section of Tectnical Library. B.R.

Hi, You can find answers in following post: As well, visit Unitronics Helpdesk Portal http://support.unitronics.com/ and search for "memory". You will find some information. B.R.

Hi, Please forward your request to support@unitronics.com.

Yes, Send your version request to support@unitronics.com and we will send you link to download. B.R.

Hi, Use voltage divider and analog inputs 0-10V. For buttons use digital inputs. B.R.

What was a version number of last used VisiLogic when project being loaded to PLC? You have to use this version. And communication speed should be 115200, not 9600 *If you tested 57600 - test 115200.

Hi, Please send your request to support@unitronics.com and provide more explanation for your requirement. B.R.

Good advice is to use timers. There is a wrong use of IDLE function.

Hi Colodeti, Did you modified and downloaded to PLC new project file with added IO-D16A3-RO16? System is not plug-and-play. B.R.