Skip to main content

Modbus simulator

A Modbus TCP simulation server (oitc/modbus-server) that serves simulated holding and input registers, for exercising Ignition's Modbus driver without real hardware.

Imageoitc/modbus-server:2.2.0 (override with MODBUS_SIM_IMAGE in .env)
Catalog kindsimulator
Providesmodbus-server
Requiresnothing
Network when split is onbackend

Preset ports​

  • MODBUS_SIM_PORT=5020: host port for the Modbus TCP listener.

Post-setup​

  • device-connection: the gateway Modbus device connection (unit ID, register mappings) is set up in the gateway UI once the simulator is reachable.