Reference: Modbus Registers

This section provides the default register mapping for WAGO energy analyzers. Ensure your device configuration matches these addresses for accurate data visualization.

Standard Energy Meter Registers (879 Series)

Register Address	Parameter	Data Type	Units
0x0002	Phase 1 Voltage	Float32	V
0x0004	Phase 2 Voltage	Float32	V
0x0006	Phase 3 Voltage	Float32	V
0x0008	Phase 1 Current	Float32	A
0x000A	Total Active Power	Float32	W
0x0010	Total Active Energy	Float32	kWh

[!IMPORTANT] WEVA uses Zero-Based Addressing. If your device manual uses 1-based addressing, subtract 1 from the register address in the configuration.

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Writable Control Registers

Admins can modify these registers via the Control interface.

Register Address	Function	Range	Default
0x1000	Alarm Threshold (High)	0 - 5000	4500
0x1002	Reset Energy Counter	1 = Reset	0

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Troubleshooting Data Accuracy

If values appear distorted (e.g., massive numbers):

• Verify the Byte Order in the device settings (Standard: Big Endian).
• Ensure the correct Register Function Code (03 for Read Holding, 04 for Read Input) is selected.

Screenshot: View of a Modbus scanner tool showing matching registers with WEVA.