MergenHub Install, publish, operate
Step-by-step installation, publishing on a domain, firewall and HTTPS, Windows services and logs, and every module explained with real screenshots.
What MergenHub is
Architecture, modules, services, data flow and where things live on disk.
Read →Installation
Requirements, the setup wizard step by step, what the installer does, upgrade and clean install.
Read →Quick start: first live data
Sign in, add a channel, a device and tags, see live values, connect an OPC UA client.
Read →Publishing on a domain
DNS, port forwarding, HTTPS certificates, reverse proxy (IIS / nginx / Caddy), remote OPC UA.
Read →Windows Firewall and ports
Which ports MergenHub uses, the rules the installer adds, how to open or restrict them.
Read →Windows services and the tray app
The three services, startup and crash recovery, the system tray manager, running without a logged-in user.
Read →Logs and diagnostics data
Every log MergenHub writes: file logs, event log, audit log, historian database, installer log; retention and locations.
Read →Licensing and trial mode
Trial limits, online and offline activation, releasing and moving a license, subscriptions and maintenance.
Read →Backup, restore, upgrade, uninstall
What to back up, project export/import, in-place upgrades, uninstalling.
Read →Channels, devices and tags
The project hierarchy, scan rates and scan modes, scaling, tag groups, addressing helpers, tag generation.
Read →Protocol drivers
Modbus, Siemens S7, OMRON, DNP3, IEC 104, IEC 61850, MQTT, OPC UA client, simulator — what each supports.
Read →OPC UA server
Endpoints, security policies, certificates, the address space, system tags, history access, alarms over UA.
Read →REST API
Authentication, configuration API, live values, writes, Swagger, examples in curl.
Read →Data Bridge (IoT gateway)
REST server, REST client and MQTT client agents; payload formats; Kepware-compatible endpoints.
Read →Advanced (virtual) tags
Expression engine, average/min/max, totalizer, derived, link, Oracle cumulative tags; function reference.
Read →Alarms and notifications
ISA-18.2 lifecycle, conditions, deadband, e-mail and SMS, per-user preferences, alarm history.
Read →Historian (data logger)
Log groups, triggers, SQLite or ODBC targets, store-and-forward, trends and export.
Read →SCADA / HMI
Editor, symbol libraries, pipes and flow animation, bindings, faceplates, operator view, templates.
Read →Users, groups and security
Roles and permissions, resource ACL, HTTPS, session policy, audit, hardening checklist.
Read →AI assistant (MCP server)
Connecting AI assistants over MCP, OAuth and tokens, the tool set, what it can and cannot do.
Read →Troubleshooting
Device diagnostics and packet traces, common errors and their fixes, where to look first.
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