MBMap Registry
  1. Devices
  2. Kostal
  3. PIKO IQ / PLENTICORE

Kostal PIKO IQ / PLENTICORE Modbus register map

Also covers PLENTICORE plus, PLENTICORE G2, PLENTICORE G3, PLENTICORE MP G3

PIKO IQ / PLENTICORE hybrid and PV inverters over Modbus TCP: operating data, energy manager, power meter, battery, grid management and external battery control

  • Official
  • 157 registers
  • Modbus TCP
  • Revision 3 · 2026-10-18
  • Identity: serial number

Official: Written from the manufacturer's documentation, but not tested on a device yet. Check the map against the manufacturer's documentation before you write to a live device. Tested it? Report a test.

Download .mbmap.json Raw JSON View on GitHub Suggest a correction Report a problem

Communication

Protocol
Modbus TCP
Unit ID
71
TCP port
1502
Byte / word order
CDAB · bytes big-endian, words low first (word swap)
Addresses
0-based

Connection values are defaults: the device may be configured differently.

Map

Registers
157 holding registers
Groups
15
Translation tables
6
Revision
3 · 2026-10-18
Added
()
File
maps/kostal/piko-iq-plenticore.mbmap.json · 26 KB · history
SHA-256
e677a7334819be85c53ecc5176007e6f735b989e012d87e3d9215108db0169f7
Manufacturer
kostal-solar-electric.com

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.

Registers
RoleRegisterAddressTypeValues
Serial number Inverter serial number holding 14 string[8]

Sources and notes

  • PIKO IQ/PLENTICORE KOSTAL Interface description MODBUS (TCP) & SunSpec · version 2.7, 2025-11-20
    chapter 3, the Modbus register tables (SunSpec models are not part of this map); valid from PIKO/PLENTICORE G1 UI 01.30.12092, G2 SW 02.15, G3 and MP G3 SW 3.06.00

Source: KOSTAL Solar Electric, "PIKO IQ/PLENTICORE KOSTAL Interface description MODBUS (TCP) & SunSpec", revision 2.7 (2025-11-20)

  • Modbus TCP is off by default: enable it in the web interface under Settings > Modbus / SunSpec (TCP). The default TCP port is 1502 and the unit ID 71 (both can be changed).
  • Function codes 03, 06 and 16. The byte order is set in the web interface: 'little-endian (CDAB) Standard Modbus' (the default, used here) or 'big-endian (ABCD) SunSpec'. Strings use two characters per register.
  • Registers marked as scale factors hold a signed power of ten: value = register x 10^factor.
  • The active power, reactive power and delta cos φ setpoints are not kept over a restart of the inverter.
  • Not in this map: the SunSpec models (1, 103, 113, 120, 123, 160, 203, 802), which start at register 40003; see the SunSpec Alliance map.
AreaAddressNameTypeAccessUnitScaleDescription
HR 2 uint16 RW
HR 4 uint16 RW
HR 5 uint16 RW
HR 6 string[8] R
HR 14 string[8] R
HR 30 uint16 R
HR 32 uint16 R
HR 34 uint16 R
HR 36 uint16 R
HR 38 string[8] R
HR 46 string[8] R
HR 54 uint32 CDAB R
HR 56 uint32 CDAB R
HR 58 string[13] R
HR 98 float32 CDAB R °C
HR 100 float32 CDAB R W
HR 104 uint32 CDAB R
HR 106 float32 CDAB R W
HR 108 float32 CDAB R W
HR 110 float32 CDAB R Wh
HR 112 float32 CDAB R Wh
HR 114 float32 CDAB R Wh
HR 116 float32 CDAB R W
HR 118 float32 CDAB R Wh
HR 120 float32 CDAB R Ω
HR 122 float32 CDAB R %
HR 124 float32 CDAB R %
HR 144 float32 CDAB R s
HR 150 float32 CDAB R
HR 152 float32 CDAB R Hz
HR 154 float32 CDAB R A
HR 156 float32 CDAB R W
HR 158 float32 CDAB R V
HR 160 float32 CDAB R A
HR 162 float32 CDAB R W
HR 164 float32 CDAB R V
HR 166 float32 CDAB R A
HR 168 float32 CDAB R W
HR 170 float32 CDAB R V
HR 172 float32 CDAB R W
HR 174 float32 CDAB R var
HR 178 float32 CDAB R VA
HR 190 float32 CDAB R A
HR 194 float32 CDAB R
HR 200 float32 CDAB R A
HR 202 float32 CDAB R 0 = fuse fail, 1 = fuse ok, 255 = unchecked
HR 208 float32 CDAB R
HR 210 float32 CDAB R %
HR 214 float32 CDAB R °C
HR 216 float32 CDAB R V
HR 218 float32 CDAB R
HR 220 float32 CDAB R Hz
HR 222 float32 CDAB R A
HR 224 float32 CDAB R W
HR 226 float32 CDAB R var
HR 228 float32 CDAB R VA
HR 230 float32 CDAB R V
HR 232 float32 CDAB R A
HR 234 float32 CDAB R W
HR 236 float32 CDAB R var
HR 238 float32 CDAB R VA
HR 240 float32 CDAB R V
HR 242 float32 CDAB R A
HR 244 float32 CDAB R W
HR 246 float32 CDAB R var
HR 248 float32 CDAB R VA
HR 250 float32 CDAB R V
HR 252 float32 CDAB R W
HR 254 float32 CDAB R var
HR 256 float32 CDAB R VA
HR 258 float32 CDAB R A
HR 260 float32 CDAB R W
HR 266 float32 CDAB R V
HR 268 float32 CDAB R A
HR 270 float32 CDAB R W
HR 276 float32 CDAB R V
HR 278 float32 CDAB R A
HR 280 float32 CDAB R W
HR 286 float32 CDAB R V
HR 320 float32 CDAB R Wh
HR 322 float32 CDAB R Wh
HR 324 float32 CDAB R Wh
HR 326 float32 CDAB R Wh
HR 384 string[32] R
HR 416 uint16 R
HR 418 uint16 R
HR 420 string[8] R
HR 428 string[8] R
HR 436 string[8] R
HR 444 uint16 R
HR 446 string[8] R
HR 454 string[8] R
HR 512 uint32 CDAB R Ah
HR 514 uint16 R %
HR 515 uint32 CDAB R
HR 517 string[8] R
HR 525 uint32 CDAB R
HR 527 uint32 CDAB R
HR 529 uint32 CDAB R Wh
HR 531 uint16 R W ×10^Inverter max power scale factor

Help improve this map

Esc