LogixDesigner-MCP
Click on "Install Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type
@followed by the MCP server name and your instructions, e.g., "@LogixDesigner-MCPopen 'Line4.acd' and export to L5X"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
LogixDesigner-MCP
MCP server wrapping the Rockwell Automation Logix Designer SDK (Studio 5000) as typed MCP tools, bridged from Windows to Linux via Cloudflare Tunnel.
A Hermes Agent can open ACD files, export to L5K/L5X, read rung logic, enumerate tags and program structure, run verification — all over a typed MCP interface — without ever touching Studio 5000's GUI.
Architecture
Linux (Hermes) ── SSE/HTTPS ──→ Cloudflare Tunnel ──→ Windows
│
FastMCP ── pythonnet ── Logix Designer SDK
localhost:8765The Linux side runs mock-based tests; all COM-dependent logic lives on the Windows deployment.
Related MCP server: T-IA Connect (Siemens TIA Portal)
Tools
Tool | Description |
| SDK version, license status, availability |
| Open an ACD — returns controller name/type/revision |
| Close the current project |
| Is a project open? Which one? |
| Save the open project as ACD |
| Export to L5K text format |
| Export to L5X XML format |
| Import an L5K (create ACD from text) |
| List controller/program-scope tags |
| Programs → routines → rung counts |
| Rung-by-rung ladder text |
| Controller task configuration |
| Run controller verification |
| Restart the SDK COM host |
All tools that can fail return structured SdkError — no raw tracebacks.
Development (Linux)
python -m venv .venv
.venv/bin/pip install -e ".[dev]"
.venv/bin/pytest tests/ -vDeployment (Windows)
See deploy/README.md. Requires:
Windows Server with Studio 5000 v33+
Logix Designer SDK installed
Python 3.11+
Cloudflare Tunnel (cloudflared)
deploy/install.bat # Create venv, discover SDK, verify
deploy/cloudflared-config.yml # Tunnel setup guide
deploy/hermes-config.yaml # Hermes MCP client configProject status
Phase 0: Project skeleton
Phase 1: Pydantic models, abstract SDK interface, mock implementation (Linux tested)
Phase 2: FastMCP server with 14 tools, error contract, async wrappers
Phase 3: Windows deployment artifacts
Phase 4: Real COM interop (
RealSdkInterop) — requires Windows
This server cannot be installed
Maintenance
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