Ruby - Industrial Analog Out Bricklet

This is the description of the Ruby API bindings for the Industrial Analog Out Bricklet. General information and technical specifications for the Industrial Analog Out Bricklet are summarized in its hardware description.

An installation guide for the Ruby API bindings is part of their general description.

Examples

The example code below is Public Domain (CC0 1.0).

Simple Current

Download (example_simple_current.rb)

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#!/usr/bin/env ruby
# -*- ruby encoding: utf-8 -*-

require 'tinkerforge/ip_connection'
require 'tinkerforge/bricklet_industrial_analog_out'

include Tinkerforge

HOST = 'localhost'
PORT = 4223
UID = 'XYZ' # Change XYZ to the UID of your Industrial Analog Out Bricklet

ipcon = IPConnection.new # Create IP connection
iao = BrickletIndustrialAnalogOut.new UID, ipcon # Create device object

ipcon.connect HOST, PORT # Connect to brickd
# Don't use device before ipcon is connected

# Set output current to 4.5mA
iao.set_current 4500
iao.enable

puts 'Press key to exit'
$stdin.gets
iao.disable
ipcon.disconnect

Simple Voltage

Download (example_simple_voltage.rb)

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#!/usr/bin/env ruby
# -*- ruby encoding: utf-8 -*-

require 'tinkerforge/ip_connection'
require 'tinkerforge/bricklet_industrial_analog_out'

include Tinkerforge

HOST = 'localhost'
PORT = 4223
UID = 'XYZ' # Change XYZ to the UID of your Industrial Analog Out Bricklet

ipcon = IPConnection.new # Create IP connection
iao = BrickletIndustrialAnalogOut.new UID, ipcon # Create device object

ipcon.connect HOST, PORT # Connect to brickd
# Don't use device before ipcon is connected

# Set output voltage to 3.3V
iao.set_voltage 3300
iao.enable

puts 'Press key to exit'
$stdin.gets
iao.disable
ipcon.disconnect

API

All methods listed below are thread-safe.

Basic Functions

BrickletIndustrialAnalogOut::new(uid, ipcon) → industrial_analog_out
Parameters:
  • uid -- str
  • ipcon -- IPConnection

Creates an object with the unique device ID uid:

industrial_analog_out = BrickletIndustrialAnalogOut.new 'YOUR_DEVICE_UID', ipcon

This object can then be used after the IP Connection is connected (see examples above).

BrickletIndustrialAnalogOut#enable → nil

Enables the output of voltage and current.

The default is disabled.

BrickletIndustrialAnalogOut#disable → nil

Disables the output of voltage and current.

The default is disabled.

BrickletIndustrialAnalogOut#is_enabled → bool

Returns true if output of voltage and current is enabled, false otherwise.

BrickletIndustrialAnalogOut#set_voltage(voltage) → nil
Parameters:voltage -- int

Sets the output voltage in mV.

The output voltage and output current are linked. Changing the output voltage also changes the output current.

BrickletIndustrialAnalogOut#get_voltage → int

Returns the voltage as set by #set_voltage.

BrickletIndustrialAnalogOut#set_current(current) → nil
Parameters:current -- int

Sets the output current in µA.

The output current and output voltage are linked. Changing the output current also changes the output voltage.

BrickletIndustrialAnalogOut#get_current → int

Returns the current as set by #set_current.

Advanced Functions

BrickletIndustrialAnalogOut#set_configuration(voltage_range, current_range) → nil
Parameters:
  • voltage_range -- int
  • current_range -- int

Configures the voltage and current range.

Possible voltage ranges are:

  • 0V to 5V
  • 0V to 10V (default)

Possible current ranges are:

  • 4mA to 20mA (default)
  • 0mA to 20mA
  • 0mA to 24mA

The resolution will always be 12 bit. This means, that the precision is higher with a smaller range.

The following constants are available for this function:

  • BrickletIndustrialAnalogOut::VOLTAGE_RANGE_0_TO_5V = 0
  • BrickletIndustrialAnalogOut::VOLTAGE_RANGE_0_TO_10V = 1
  • BrickletIndustrialAnalogOut::CURRENT_RANGE_4_TO_20MA = 0
  • BrickletIndustrialAnalogOut::CURRENT_RANGE_0_TO_20MA = 1
  • BrickletIndustrialAnalogOut::CURRENT_RANGE_0_TO_24MA = 2
BrickletIndustrialAnalogOut#get_configuration → [int, int]

Returns the configuration as set by #set_configuration.

The following constants are available for this function:

  • BrickletIndustrialAnalogOut::VOLTAGE_RANGE_0_TO_5V = 0
  • BrickletIndustrialAnalogOut::VOLTAGE_RANGE_0_TO_10V = 1
  • BrickletIndustrialAnalogOut::CURRENT_RANGE_4_TO_20MA = 0
  • BrickletIndustrialAnalogOut::CURRENT_RANGE_0_TO_20MA = 1
  • BrickletIndustrialAnalogOut::CURRENT_RANGE_0_TO_24MA = 2

The returned array has the values voltage_range and current_range.

BrickletIndustrialAnalogOut#get_api_version → [int, int, int]

Returns the version of the API definition (major, minor, revision) implemented by this API bindings. This is neither the release version of this API bindings nor does it tell you anything about the represented Brick or Bricklet.

BrickletIndustrialAnalogOut#get_response_expected(function_id) → bool
Parameters:function_id -- int

Returns the response expected flag for the function specified by the function ID parameter. It is true if the function is expected to send a response, false otherwise.

For getter functions this is enabled by default and cannot be disabled, because those functions will always send a response. For callback configuration functions it is enabled by default too, but can be disabled by #set_response_expected. For setter functions it is disabled by default and can be enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is send and errors are silently ignored, because they cannot be detected.

See #set_response_expected for the list of function ID constants available for this function.

BrickletIndustrialAnalogOut#set_response_expected(function_id, response_expected) → nil
Parameters:
  • function_id -- int
  • response_expected -- bool

Changes the response expected flag of the function specified by the function ID parameter. This flag can only be changed for setter (default value: false) and callback configuration functions (default value: true). For getter functions it is always enabled.

Enabling the response expected flag for a setter function allows to detect timeouts and other error conditions calls of this setter as well. The device will then send a response for this purpose. If this flag is disabled for a setter function then no response is send and errors are silently ignored, because they cannot be detected.

The following function ID constants are available for this function:

  • BrickletIndustrialAnalogOut::FUNCTION_ENABLE = 1
  • BrickletIndustrialAnalogOut::FUNCTION_DISABLE = 2
  • BrickletIndustrialAnalogOut::FUNCTION_SET_VOLTAGE = 4
  • BrickletIndustrialAnalogOut::FUNCTION_SET_CURRENT = 6
  • BrickletIndustrialAnalogOut::FUNCTION_SET_CONFIGURATION = 8
BrickletIndustrialAnalogOut#set_response_expected_all(response_expected) → nil
Parameters:response_expected -- bool

Changes the response expected flag for all setter and callback configuration functions of this device at once.

BrickletIndustrialAnalogOut#get_identity → [str, str, str, [int, int, int], [int, int, int], int]

Returns the UID, the UID where the Bricklet is connected to, the position, the hardware and firmware version as well as the device identifier.

The position can be 'a', 'b', 'c' or 'd'.

The device identifier numbers can be found here. There is also a constant for the device identifier of this Bricklet.

The returned array has the values uid, connected_uid, position, hardware_version, firmware_version and device_identifier.

Constants

BrickletIndustrialAnalogOut::DEVICE_IDENTIFIER

This constant is used to identify a Industrial Analog Out Bricklet.

The #get_identity() function and the ::CALLBACK_ENUMERATE callback of the IP Connection have a device_identifier parameter to specify the Brick's or Bricklet's type.

BrickletIndustrialAnalogOut::DEVICE_DISPLAY_NAME

This constant represents the human readable name of a Industrial Analog Out Bricklet.