KEYENCE KV Host Link for Python

Python library for KEYENCE KV Host Link PLC communication.

PLC Comm Family

This library is part of the plc-comm family. See the package matrix for protocol, language, registry, and install-command mapping.

Supported PLC profiles

The maintained profile table is in PLC profiles. Choose one exact canonical PLC profile from that table.

Supported device types

The shared device and range tables are in the KV Host Link Device Ranges page. Use that page for supported device families, address syntax, and profile-specific notes.

Installation

pip install plc-comm-kv-hostlink

The PyPI wheel and source distribution contain the files needed to install and use the library; they do not carry the maintained sample tree or documentation source. Use the GitHub repository for current samples and the shared documentation site for user guides. GitHub source archives include the test suite and fixtures so their standard build and test commands are self-contained.

Quick example

import asyncio
from hostlink import HostLinkConnectionOptions, device_range_catalog_for_plc_profile, open_and_connect, read_typed

async def main() -> None:
    catalog = device_range_catalog_for_plc_profile("keyence:kv-8000")
    options = HostLinkConnectionOptions(
        host="192.168.250.100",
        plc_profile="keyence:kv-8000",
        port=8501,
        transport="tcp",
    )
    async with await open_and_connect(options) as client:
        dm0 = await read_typed(client, "DM0", "U")
        print(f"DM0 = {dm0}")

asyncio.run(main())

Documentation

For a zero-code connectivity check, see PLC Scope (Windows).

License and registry

Commercial support

If you plan to embed this library in a paid or commercial product, please consider a separate support agreement or supporting the project as a sponsor.

Contact: https://fa-labo.com/contact.html