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Modbus - Analog Out Bricklet 2.0

This is the description of the Modbus protocol for the Analog Out Bricklet 2.0. General information and technical specifications for the Analog Out Bricklet 2.0 are summarized in its hardware description.

API

A general description of the Modbus protocol structure can be found here.

Basic Functions

BrickletAnalogOutV2.set_output_voltage
Function ID:
  • 1
Request:
  • voltage – Type: uint16, Unit: 1 mV, Range: [0 to 12000], Default: 0
Response:
  • no response

Sets the voltage.

BrickletAnalogOutV2.get_output_voltage
Function ID:
  • 2
Request:
  • empty payload
Response:
  • voltage – Type: uint16, Unit: 1 mV, Range: [0 to 12000], Default: 0

Returns the voltage as set by set_output_voltage.

Advanced Functions

BrickletAnalogOutV2.get_input_voltage
Function ID:
  • 3
Request:
  • empty payload
Response:
  • voltage – Type: uint16, Unit: 1 mV, Range: [0 to 15000]

Returns the input voltage.

BrickletAnalogOutV2.get_identity
Function ID:
  • 255
Request:
  • empty payload
Response:
  • uid – Type: char[8]
  • connected_uid – Type: char[8]
  • position – Type: char, Range: ['a' to 'h', 'z']
  • hardware_version – Type: uint8[3]
    • 0: major – Type: uint8, Range: [0 to 255]
    • 1: minor – Type: uint8, Range: [0 to 255]
    • 2: revision – Type: uint8, Range: [0 to 255]
  • firmware_version – Type: uint8[3]
    • 0: major – Type: uint8, Range: [0 to 255]
    • 1: minor – Type: uint8, Range: [0 to 255]
    • 2: revision – Type: uint8, Range: [0 to 255]
  • device_identifier – Type: uint16, Range: [0 to 216 - 1]

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', 'd', 'e', 'f', 'g' or 'h' (Bricklet Port). A Bricklet connected to an Isolator Bricklet is always at position 'z'.

The device identifier numbers can be found here.