Usage

ABex is a GenServer-based implementation to expose tags and can be summarized by:

1. Start a Tag process use start_link/1.

   The following options are available:

   • ip - IP PLC address (string).
   • path - The path to the device containing the named data (string).
   • cpu - AB CPU models (string): plc,plc5,slc,slc500,micrologix,mlgx,compactlogix,clgx,lgx,controllogix,contrologix,flexlogix,flgx.

2. Send requests get_all_tags/1, read/2, write/2.

Get Tags paths.

To get all available tags use get_all_tags/1.

iex> {:ok, tag_pid} = ABex.Tag.start_link(ip: "20.0.0.70", cpu: "lgx", path: "1,0")
iex> {:ok, tag_list} = ABex.Tag.get_all_tags(tag_pid)

Read tag data

Use read/2. The following options are available: - data_type - Expected data type (string). - elem_size - Expected data type size in bytes (integer). - elem_count - Number of items to request (integer). - name - Tag's name (string).

iex> {:ok, tag_pid} = ABex.Tag.start_link(ip: "20.0.0.70", cpu: "lgx", path: "1,0")
iex> {:ok, values} = ABex.Tag.read(tag_pid, name: "Some_tag", elem_size: 8, elem_count: 1, data_type: "uint8")

Write a value to a tag

Use write/2. The following options are available: - data_type - Expected data type (string). - elem_size - Expected data type size in bytes (integer). - elem_count - Number of items to request (integer). - name - Tag's name (string). - value - Value to be written on the tag.

iex> {:ok, tag_pid} = ABex.Tag.start_link(ip: "20.0.0.70", cpu: "lgx", path: "1,0")
iex> :ok = ABex.Tag.read(tag_pid, name: "Some_tag", elem_size: 8, elem_count: 1, data_type: "uint8", value: 103)

Installation

If available in Hex, the package can be installed by adding abex to your list of dependencies in mix.exs:

def deps do
  [
    {:abex, "~> 0.1.1"},
    # the current elixir-cmake (0.1.0) hex package is not compatible.
    {:elixir_cmake, github: "valiot/elixir-cmake", override: true}
  ]
end

Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/abex.