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Modbus

The Modbus input component receives data from Modbus TCP devices, supporting various register types.

Configuration​

addr (required)​

Modbus TCP server address in the format host:port.

type: integer

slave_id (required)​

Modbus slave ID.

type: integer

points (required)​

List of Modbus points to read.

type: array of point objects

Point Object​

type (required)​

Type of Modbus register to read. Must be one of: "coils", "discrete_inputs", "holding_registers", or "input_registers".

type: string

name (required)​

Name for the data point. This will be used as the field name in the output record.

type: string

address (required)​

Modbus register address to read from.

type: integer

quantity (required)​

Number of registers to read.

type: integer

read_interval (required)​

Interval between consecutive reads.

type: string (parsed as duration)

example: "1s", "500ms", "1m"

Examples​

- input:
    type: "modbus"
    addr: "192.168.1.100:502"
    slave_id: 1
    read_interval: "1s"
    points:
      - type: "holding_registers"
        name: "temperature"
        address: 100
        quantity: 2
      - type: "coils"
        name: "status_flags"
        address: 200
        quantity: 2