Electro Industries Shark 250 Modbus register map

Device identity

What a tool can read to check that this map fits the connected device (SPEC.md section 4.7). Registers with a role are read like any other register.

Sources and notes

• Shark 250 Meter Modbus Manual · version V.1.07
  Doc# E169711, chapter 4, Modbus register map (Rev 3); downloaded through the vendor's download form

Source: Electro Industries/GaugeTech, "Shark 250 Meter Modbus Manual", V.1.07 (Doc# E169711)

• All registers are holding registers (FC03 read, FC06/FC10 write). Addresses are the manual's 1-based decimal register numbers (register 1000 = PDU address 0x03E7).
• 32-bit values and floats span two registers with the high-order half first.
• Factory settings of the RS-485 port (COM2): 57600 baud, no parity, address 1, Modbus RTU (setup registers 30026 and 30027).
• Energy registers are integers formatted by registers 30117 (Wh and VAh) and 30118 (varh): energy scale (unit, kilo or mega), digit count and decimal places. The factory format is 8 digits in kilo units with no decimals.
• Q1+Q4 energy and power are labelled delivered and Q2+Q3 received by default (registers 30297-30344). Per-phase power and power factor are non-zero only with a wye hookup.
• Not in this map: the quadrant, Q, Vh, Ah, V2t and I2t accumulators, uncompensated readings, minimum/maximum blocks, harmonics and waveforms, option cards, aggregators, time of use, programmable settings other than the energy formats, secondary readings and logs.