eTactica EM-SC/EM-FC Modbus register map

Sources and notes

Source: Omni Console device library (OmniCoreST), modbus-library/etactica-em-sc-fc.toml; Source: etactica-power-meter-em-modbus-register-map.pdf (v2.1, 2018-04-10). Not verified against the manufacturer's documentation

• eTactica EM-SC/EM-FC.
• Converted automatically from the Omni Console device library (OmniCoreST).
• Not verified against the manufacturer's documentation.
• Corrections are welcome (CONTRIBUTING.md). Change x_status once this table has been checked against the manual.
• | eTactica EM-SC / EM-FC Power Meter (Modbus RTU RS-485)
• |
• | Source: etactica-power-meter-em-modbus-register-map.pdf (v2.1, 2018-04-10)
• | Models: EM-SC (split-core current sensors), EM-FC (flexible-coil current sensors)
• | Protocol: Modbus RTU; FC03 read holding registers, FC16 write multiple registers
• | Default RS-485: 19200 baud, 8 data bits, Even parity, 1 stop bit (firmware ≥3.2 configurable)
• | Default Modbus slave ID: last byte of serial number (configurable via 0x2009)
• |
• | ADDRESSING: All addresses in this file are native PDU addresses (0-based).
• | Register 0x2000 = decimal 8192. Some tools show these as 48193 (Modicon holding register).
• | DATA FORMAT: Big-Endian, MSB first. Unsigned 16-bit unless noted.
• | Size-2 registers: u32 stored in 2 consecutive registers (MSB first).
• | Size-4 registers: signed 64-bit stored in 4 consecutive registers (MSB first);
• | represented here as two u32 entries: (high 32-bit) at base, (low 32-bit) at base+2.