General Discussion

• F

  Problem with attach PLC and upload RT
  • frenchy

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  Can I still work with my RPI B3 + or should I buy a RPI2? The RT download problem comes from there?
• T

  UniPi L503 Mervic udp-connection
  • tomek1_1988

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  Hi @tomek1_1988, Unfortunately this functionality is wholly implemented by an external company, and we will have to contact them to ask for more details. It would be helpful if you could provide the exact error code which comes up in Mervis, and possibly a screenshot as well. I will try to get back to you with an answer within a few weeks, but you may find it easier to investigate the issue yourself in the meantime. Sincere apologies
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  • laiyongcai92

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  • laiyongcai92

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  • laiyongcai92

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  • laiyongcai92

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  • laiyongcai92

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• N

  L&T ER300P holding register reading through prolific converter
  • Neethu

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  Hello @Neethu, The Schneider EM6400 supports Modbus and you can read the values into Evok or Mervis. The L&T ER300P has RS485, but with some custom L&T protocol. You cannot easily read the data into Evok or Mervis. Typically, the best way is to use Modbus devices. Trying to implement any other protocol would be quite time consuming and requires vast knowledge. Martin
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  • laiyongcai92

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  • laiyongcai92

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  • EricYKlein

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• M

  SFTP access to Neuron directories
  • mikeardy

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  ok I will try to use the /home/pi/ folder.
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  Windows 10 IoT?
  • JasonEL

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  Hello, we have uploadet an non Commercial version of the Neuron driver for windows 10 IOT https://www.nuget.org/packages/adcoso.iot.devicedrivers.neuron.driver/ kind regards Mirco
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  UniPi API - need to use Win 10 IoT or Mono
  • brzezinol

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  Hello, we have uploadet an non Commercial version of the driver for windows 10 IOT https://www.nuget.org/packages/adcoso.iot.devicedrivers.neuron.driver/ kind regards Mirco
• T

  Open source PLC with UniPi
  • thiagoralves

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  OSCAT An overview Basic Functions Network Functions Building Fuctions
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  unipi + Raspberry Pi 7” Touchscreen Display
  • devil

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  If I want to connect 7" display via ribbon cable by slot on PI 3B, not by pins on GPIO, is there any option how to use display in same time with UniPi? Display needs to be connected to 5V, GND and SDA, SCL pin (I2C). What I see in pictures, GPIO is used to connection UniPI so I think that display can be connected to UniPI. I hope that it is possible.
• W

  Neuron on Node.js over modbus (with MQTT)
  • wesleydv

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  @wesleydv Nice work and thank you for sharing!
• K

  Evok does not display data from sensor the DS18B20 but in Mervis or raspbery it do
  • KaniaGandzowski

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  @KaniaGandzowski The easies API for Mervis is TCP Modbus. What about my comment: It might NOT work if you have all three softwares on one system running at the same time..
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  Modbus, send REAL data
  • Giamba

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  I find it! Modbus data order: 1234. Example: In C program header: typedef unsigned long DWORD; typedef unsigned short WORD; union u_DWORD_TO_FLOAT{ DWORD i; float f; }; and in the code: union u_DWORD_TO_FLOAT AI01; ... AI01.i = (mb_mapping->tab_registers[20] << 16) + mb_mapping->tab_registers[21]; float value = AI01.f; Hope this help someone !
• S

  Read out PLC data over MODBUS every Xs and send over MQTT?
  • Sacirovic

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  @Sacirovic Yes, the lib for Nodered supports both Modbus TCP (for communication with Neuron IOs) and Modbus RTU for communication with external modbus devices connected to RS485. We do not have any example for NodeRed but there are some nice youtube videos from the guy that wrote the library... To get it working you will need a Raspbian lite and this: https://github.com/UniPiTechnology/neuron_tcp_modbus_overlay After installation this will provide the TCP Modbus server and the RS485 available at /dev/extcomm/0/0