Connections, devices and points

The protocol hierarchy is:

Connection
└── Device
    └── Point

Connection

A Connection owns transport and protocol settings. Implemented Modbus modes include TCP and RTU. The selected Runtime target must support the requested transport and hardware profile.

Device

A Device supplies address and device-level parameters inherited by its Points. A device belongs to exactly one Connection.

Point

A Point maps a physical register, coil or protocol property into Nodectra's typed binding system. Typical settings include:

• register or coil address;
• read/write access mode;
• Boolean, Integer, Float or String engineering type;
• unit, scale and offset;
• polling and quality behavior;
• automatic output source when configured for controlled writes.

Read and write safety

Manual and automatic writes are explicit. Automatic Point output is validated against its source, quality and project ownership. Graphic commands are audited and resolved to exactly one writable Point from the active bundle.

A correct configuration is not proof of field operation. Commissioning must verify the physical bus, addressing, byte order, scaling and safe actuator response.