telegraf-execd-opcda

telegraf-execd-opcda is a telegraf external input plugin to gather data from OPC DA using the konimarti/opc library.

Usage

• Install OPC DA Automation Wrapper 2.02 by following the installation instruction from konimarti/opc library.

• Download the latest release package for your platform.

• Edit opcda.conf as needed. Example:

[[inputs.opcda]]
  # Measurement name
  name = "sim"

  # OPC DA server
  server = "OI.SIM.1"

  # First successful node in the list is used
  nodes = ["localhost"]

  # Node ID configuration
  # item        - OPC DA Item Name or ItemID
  # name        - field name to use in the output (optional)
  # tags        - extra tags to be added to the output metric (optional)
  # Example:
  items = [
    { item = "PORT.PLC.int" },
    { item = "PORT.PLC.float", name = "randomFloat", tags = [
      [
        "equipment",
        "maker1",
      ],
      [
        "input",
        "temperature",
      ],
    ] },
  ]

• Edit execd plugin configuration as needed:

[[inputs.execd]]
   command = ["/path/to/opcda", "-config", "/path/to/opcda.conf"]
   signal = "none"
   restart_delay = "10s"
   data_format = "influx"

• Restart or reload Telegraf.

Development

• Install and register OPC DA Automation Wrapper 2.02. For 32-bit OPC servers on 64-bit systems follow these steps:

  • copy the x86 version gbda_aut.dll to C:\Windows\SysWOW64 folder;
  • register this module - enter %systemroot%\SysWoW64\regsvr32.exe gbda_aut.dll
  • Set go architecture - $ENV:GOARCH=386 (powershell), or SET GOARCH=386 (batch)

• Build the executable go build -trimpath -o opcda.exe .\cmd\opcda\main.go

• Edit opcda.conf as needed.

From here, you can already test the plugin with your config file.

opcda -config opcda.conf

If everything is ok, you should see something like this

sim PORT.PLC.int=3i 1633624798000000000
sim,equipment=maker1,input=temperature randomFloat=10.511474609375 1633624798000000000