Posts made by Martin Kudláček

Hello @LubomirMaron, you can always flash the SD card with the clean image. Then do the licensing and then upload the solution.

Hello @LubomirMaron,
if "Configure the Unipi Module" fails to connect to the PLC, that means the PLC is not reachable over ethernet. Try reattaching to the PLC.

Tip: this can happen when you switch Profiles. Reattaching usually helps.

Best regards,
Martin

Dobrý den @linex,
na co nejspíš narážíte je pomalost vyčítaných hodnot. Ta souvisí s funkcí autogen. Zkuste si prosím projít tento tutorial: https://kb.unipi.technology/cs:sw:01-mervis:autogen-hidden

S pozdravem,
Martin Kudláček

Hello @LubomirMaron,
deploying of the solution doesn't affect the configuration of the IOs. You need to "Configure the Unipi Module": https://kb.unipi.technology/en:sw:01-mervis:unipi-configure-module-hidden

Best regards,
Martin

Hello @wicked,
my colleague meant something like this:

Then you will have RS485 on the Unipi 1.1 and you can connect to the Weintek over DB9. It will act as a additional serial port to the one exposed as RJ11 connector.

Best regards,
Martin

Hello @wzp, create a output variable by the same name as the function.

Best regards,
Martin

Hello @rtatibouet,
the RS485 and RS232 are completely different buses.

The RS485 is differential and doesn't need the GND, since the logic levels are based on the voltage difference between A and B terminal

The RS232 is not differential and the TX / RX logic levels are based on the voltages between TX and GND and RX and GND.

Best regards,
Martin

Hello @FabioIT, we have updated the tutorial on measuring the resistance: https://kb.unipi.technology/en:automation:02-glossary:analog-inputs-hidden#measuring_resistance

Hello @Stoeffel,
the Evok 2.3.0 with support for xG18 has been released. You can proceed with the apt update && apt install evok.

Using the xG18 is definitely more stable. Each sensor has its own dedicated port and the powering of the sensors is parasitic, which ensures that the sensor will lose the power and "reset" itself after each reading. Another great advantage is that you don't need to configure the IDs of the sensors, so replacement is very quick.

Best regards,
Martin

Hello @Stoeffel,
the xG18 is not yet supported in the current version of Evok. We will publish the new version of Evok today or tommorow. I'll let you know, once it is out.

Thank you for understanding and have a nice day,
Martin

Hi @HonzaS,
the problem is that there are effectively two processes accessing the same serial port, which by definition is not possible. One process is the Evok communicating with the xS11 and another process is the Node-RED communicating with the energy meter.

You have to combine these two under one "hood". Configure the energy meter as a custom prototype in Evok, or disable the xS11 in Evok and read it via Node-RED.

Best regards,
Martin

For the record - @r3sist discovered that the corrupted SD card has been causing the delays. Everything in the program has been configured correctly.

There is something really wrong int the project @r3sist. Please send it to support@unipi.technology. With my project in ST code I am able to run on 20ms.

Hello @clueless,
the 1-Wire addresses are uploaded to the PLC with Deploy od the solution.

Hello @juntiedt,
the best way is to use the 3 wire sensor as the last one and connect the data line to the pin 6 on the RJ45 connector. Please consult this tutorial: https://kb.unipi.technology/en:automation:02-glossary:1wire-hidden

Hello @juntiedt,
the Unipi 1.1 doesn't have RS485 interface, so you need to use some RS485/USB converter. The latest Evok has support for xG18, you just need to set it in the /etc/evok.conf as a normal Unipi Extension.

Hello @juntiedt,
this sensor comes in the 3 wire connection + shielding. You can connect it to the 1-Wire hub, ideally as a last sensor. Please consult the 1-Wire hub pinout https://kb.unipi.technology/en:automation:02-glossary:1wire-hidden

Hello @FabioIT,
the Node-RED image is defacto a Raspberry Pi OS. You can proceed with any general tutorial for adding the desktop environment, which you can find on the offical Raspberry Pi OS webpage.

Hi @Matt,
are you sure you have selected the actual instance of the FB?

The debugging of ST code is quite "buggy". On many occasions, the values are not shown or are incorrect. We are working on a fix.

Hi @r3sist, what program cycle are you trying to achieve? Typically, you cannot get lower than 10ms.