Method: PlcAccess::Protocol::Omron::FinsTcpProtocol#get_bits_from_device

Defined in:
lib/plc_access/protocol/omron/fins_tcp_protocol.rb

#get_bits_from_device(count, device) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/plc_access/protocol/omron/fins_tcp_protocol.rb', line 101

def get_bits_from_device(count, device)
  open
  unless available_bits_range.include? count
    raise ArgumentError,
          "A count #{count} must be between #{available_bits_range.first} and #{available_bits_range.last} for #{__method__}"
  end

  device = device_by_name device
  raise ArgumentError, "#{device.name} is not bit device!" unless device.bit_device?

  command = [1, 1]
  command << device_to_a(device)
  command << int_to_a(count, 2)

  send_packet create_fins_frame(fins_header + command)
  res = receive

  count.times.each_with_object([]) do |i, a|
    a << (res[16 + 10 + 4 + i] != 0)
  end
end