BusloomDEVICE DEFINITION
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Modbus RTU Relay (D) register map

Core register map transcribed from the official Modbus RTU Relay (D) protocol documentation.

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MAP OVERVIEW

3 groups, 19 decoded points.

01Relay outputs8 tags02Digital inputs8 tags03Device information3 tags
REGISTER MAP

Searchable source data.

Documentation addresses are derived from the zero-based PDU address in the public definition. Convert a documentation address to its PDU offset when comparing with the manual. Confirm the map against revision Development Protocol V2 and the installed device before commissioning.

Relay outputs

8 of 8
Signal / registerDoc addressPDUTypeUnitNotes
Relay 1000010–0boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 2000021–1boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 3000032–2boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 4000043–3boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 5000054–4boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 6000065–5boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 7000076–6boolean—Relay state; read with FC01 and control with FC05 or FC15.
Relay 8000087–7boolean—Relay state; read with FC01 and control with FC05 or FC15.

Digital inputs

8 of 8
Signal / registerDoc addressPDUTypeUnitNotes
Digital input 1100010–0boolean—Digital input status read with FC02.
Digital input 2100021–1boolean—Digital input status read with FC02.
Digital input 3100032–2boolean—Digital input status read with FC02.
Digital input 4100043–3boolean—Digital input status read with FC02.
Digital input 5100054–4boolean—Digital input status read with FC02.
Digital input 6100065–5boolean—Digital input status read with FC02.
Digital input 7100076–6boolean—Digital input status read with FC02.
Digital input 8100087–7boolean—Digital input status read with FC02.

Device information

3 of 3
Signal / registerDoc addressPDUTypeUnitNotes
UART parameters481938192–8192uint16—Parity mode in the high byte and baud-rate mode in the low byte.
Device address5638516384–16384uint16—Configured Modbus device address.
Software version7276932768–32768uint16—Raw integer scaled by 0.01; 100 represents version 1.00.
SOURCE & SCOPE

Import the map, then verify the device.

The catalogue provides register metadata, not a connection profile. Serial port, Unit ID, baud rate and site-specific naming stay in your Busloom project.

Manufacturer protocol document ↗Import and verify this register mapCheck RS-485 wiring and framingPlan writes and verify the result