Discovery And Pairing¶

Use this guide when:

peers are not fixed ahead of time
you want discovery before manual endpoint wiring
you need pairing/trust behavior explained

Guide¶

Multi‑PLC (Multiple Runtimes) Guide¶

This guide explains how to find and manage multiple PLC runtimes on one network.

1) Start each PLC¶

On each device:

trust-runtime --project /path/to/project

Expected outcome: - Each PLC prints its Web UI URL. - Discovery is enabled by default.

2) Discover PLCs in the Web UI¶

Open the Web UI of any PLC, then go to Network → Discovery.

Expected outcome: - Other PLCs appear automatically on the same LAN. - Each entry shows a name and a web link.

3) Pair with another PLC (optional)¶

Use Network → Pairing to generate a code on the remote PLC, then claim it from your current PLC.

Expected outcome: - You can access the remote PLC UI without re‑entering tokens.

4) Manual add (if discovery is blocked)¶

Enter the remote Web UI URL (host:port) in Network → Discovery → Manual add.

Expected outcome: - The remote PLC appears in the list.

Open Settings → Mesh data sharing and: - Enable mesh - Add variables to Publish - Add Subscribe mappings (Remote → Local) - Apply settings and restart if required

Expected outcome: - Mesh connections appear in Network → Mesh connections.

Troubleshooting¶

If PLCs don’t appear: - Confirm both PLCs are on the same LAN/VLAN. - Ensure mDNS is allowed on the network. - Use manual add as a fallback.