Modbus

An MCP server that standardizes and contextualizes industrial Modbus data.

python

GitHub Stars

python

Language

6 months ago

First Indexed

2 months ago

Catalog Refreshed

Documentation & install

Readme and setup notes from the catalogue, plus a client-ready config you can copy for your MCP host.

Installation

Add the following to your MCP client configuration file.

Configuration

View docs

{
  "mcpServers": {
    "kukapay-modbus-mcp": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/modbus-mcp",
        "run",
        "modbus-mcp"
      ],
      "env": {
        "MODBUS_HOST": "127.0.0.1",
        "MODBUS_PORT": "502",
        "MODBUS_TYPE": "tcp",
        "MODBUS_PARITY": "N",
        "MODBUS_TIMEOUT": "1",
        "MODBUS_BAUDRATE": "9600",
        "MODBUS_BYTESIZE": "8",
        "MODBUS_STOPBITS": "1",
        "MODBUS_SERIAL_PORT": "/dev/ttyUSB0",
        "MODBUS_DEFAULT_SLAVE_ID": "1"
      }
    }
  }
}

Available tools

read_register

Read the value of a Modbus holding register at a given address for a specific slave ID.

write_register

Write a value to a Modbus holding register at a specified address for a specific slave ID.

read_coils

Read the status of a sequence of Modbus coils starting at a given address for a specific slave ID.

write_coil

Write a boolean value to a Modbus coil at a given address for a specific slave ID.

read_input_registers

Read input registers starting from a given address for a specific slave ID.

read_multiple_holding_registers

Read multiple holding registers starting from a given address for a specific slave ID.

analyze_register

Analyze Modbus register values using a customizable prompt to contextualize data.

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