MBMap Registry
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  2. Fronius
  3. Symo 10

Fronius Symo 10 Modbus register map

  • Official
  • 128 registers
  • Revision 3 · 2026-11-10

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 and RTUdefault
Unit ID
1
TCP port
502default
Serial
9600 8E1 · 9600 baud, 8 data bits, even parity, 1 stop bit defaults
Byte / word order
ABCD · bytes big-endian, words high first
Addresses
1-based · wire address = address − 1

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

Map

Registers
128 holding registers
Translation tables
5
Revision
3 · 2026-11-10
Added
()
File
maps/fronius/symo-10.mbmap.json · 19 KB · history
SHA-256
8b4eccef047804cb248569b461f04d7e695f1018cb2d4c38a72ab41dc5eaf9ab
Manufacturer
fronius.com

Sources and notes

Source: Fronius, "Fronius Datamanager Modbus TCP & RTU" (42,0410,2049, 033-24022026) and "Modbus SunSpec Maps, State Codes and Events" (archive 1.1.7); https://www.fronius.com/~/downloads/Solar%20Energy/Operating%20Instructions/42,0410,2049.pdf

  • Fronius inverters with the Datamanager 2.0, read through SunSpec models (float models 111-113, 120-123, 160).
  • Addresses are the register numbers printed in the manual (1-based): the first register, 40001, is sent on the wire as 40000.
  • Register positions after the inverter model change with the SunSpec model type (float or integer with scale factors), selected in the Datamanager web interface or in register 216.
  • A value the device cannot provide is returned as the unavailable value of its type (see sentinels).
  • Some registers (second DC input, cabinet temperatures) read as unavailable on models that lack them.
AreaAddressNameTypeAccessUnitScaleDescription
HR 214 uint16 R
HR 216 uint16 RW
HR 500 uint32 ABCD R W
HR 502 uint64 ABCD R Wh
HR 506 uint64 ABCD R Wh
HR 510 uint64 ABCD R Wh
HR 40001 uint32 ABCD R
HR 40003 uint16 R
HR 40005 string[16] R
HR 40021 string[16] R
HR 40037 string[8] R
HR 40045 string[8] R
HR 40053 string[16] R
HR 40069 uint16 R
HR 40072 float32 ABCD R A
HR 40074 float32 ABCD R A
HR 40076 float32 ABCD R A
HR 40078 float32 ABCD R A
HR 40080 float32 ABCD R V
HR 40082 float32 ABCD R V
HR 40084 float32 ABCD R V
HR 40086 float32 ABCD R V
HR 40088 float32 ABCD R V
HR 40090 float32 ABCD R V
HR 40092 float32 ABCD R W
HR 40094 float32 ABCD R Hz
HR 40096 float32 ABCD R VA
HR 40098 float32 ABCD R var
HR 40100 float32 ABCD R %
HR 40102 float32 ABCD R Wh Documented as possibly imprecise
HR 40104 float32 ABCD R A Not available when the inverter has several DC inputs; use the string registers
HR 40106 float32 ABCD R V Not available when the inverter has several DC inputs; use the string registers
HR 40108 float32 ABCD R W
HR 40118 uint16 R
HR 40119 uint16 R
HR 40120 uint32 ABCD R
HR 40122 uint32 ABCD R
HR 40124 uint32 ABCD R
HR 40126 uint32 ABCD R
HR 40128 uint32 ABCD R
HR 40130 uint32 ABCD R
HR 40132 uint16 R
HR 40134 uint16 R
HR 40135 uint16 R W ×10^WRtg_SF
HR 40136 int16 R Scale factor (power of ten)
HR 40137 uint16 R VA ×10^VARtg_SF
HR 40138 int16 R Scale factor (power of ten)
HR 40139 int16 R var ×10^VArRtg_SF
HR 40142 int16 R var ×10^VArRtg_SF
HR 40143 int16 R Scale factor (power of ten)
HR 40144 uint16 R A ×10^ARtg_SF
HR 40145 int16 R Scale factor (power of ten)
HR 40146 int16 R ×10^PFRtg_SF
HR 40149 int16 R ×10^PFRtg_SF
HR 40150 int16 R Scale factor (power of ten)
HR 40151 uint16 R Wh ×10^WHRtg_SF
HR 40152 int16 R Scale factor (power of ten)
HR 40155 uint16 R W ×10^MaxChaRte_SF
HR 40156 int16 R Scale factor (power of ten)
HR 40157 uint16 R W ×10^MaxDisChaRte_SF
HR 40158 int16 R Scale factor (power of ten)
HR 40160 uint16 R
HR 40162 uint16 RW W ×10^WMax_SF
HR 40163 uint16 R V ×10^VRef_SF
HR 40164 int16 RW V ×10^VRefOfs_SF
HR 40167 uint16 RW VA ×10^VAMax_SF
HR 40168 int16 R var ×10^VARMax_SF
HR 40171 int16 R var ×10^VARMax_SF
HR 40173 int16 R ×10^PFMin_SF
HR 40176 int16 R ×10^PFMin_SF
HR 40182 int16 R Scale factor (power of ten)
HR 40183 int16 R Scale factor (power of ten)
HR 40184 int16 R Scale factor (power of ten)
HR 40186 int16 R Scale factor (power of ten)
HR 40187 int16 R Scale factor (power of ten)
HR 40189 int16 R Scale factor (power of ten)
HR 40192 uint16 R
HR 40194 uint16 R
HR 40195 uint16 R
HR 40196 uint16 R
HR 40197 uint64 ABCD R Wh Documented as possibly imprecise
HR 40227 uint32 ABCD R
HR 40229 string[4] R
HR 40233 uint32 ABCD R s
HR 40238 uint16 R
HR 40240 uint16 RW s
HR 40241 uint16 RW s
HR 40242 uint16 RW
HR 40243 uint16 RW % ×10^WMaxLimPct_SF
HR 40244 uint16 RW s
HR 40245 uint16 RW s
HR 40246 uint16 RW s
HR 40247 uint16 RW
HR 40248 int16 RW ×10^OutPFSet_SF
HR 40249 uint16 RW s
HR 40250 uint16 RW s
HR 40251 uint16 RW s
HR 40252 uint16 RW
HR 40254 int16 RW % ×10^VArPct_SF
HR 40256 uint16 RW s

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