Connect SMA to the computer through a USB-to-serial or RS485 adapter and read its registers in your browser: click "Read register values online" under the model (Chrome or Edge, nothing to install). The tables below list the MODBUS offset, unit, data type and scale of every register shown.
For logging 24/7 into a database, CSV files or Excel, use the Advanced Serial Data Logger (for MODBUS RTU) or Advanced TCP/IP Data Logger (for MODBUS TCP): they poll the complete map of every model on this page and provide continuous SMA logging and read.
Do you not know the meter address? Scan the device address online
SMA (STP6.0) - Measurement Data
Registers in the map: 401 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, int64, integer, smallint, utf8(64), utf8(8), word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 40185 | AC Current | A | word | ×10A_SF |
| 40186 | Phase A Current | A | word | ×10A_SF |
| 40187 | Phase B Current | A | word | ×10A_SF |
| 40188 | Phase C Current | A | word | ×10A_SF |
| 40189 | Scale factor [A_SF] | | smallint | |
| 40190 | Phase Voltage AB | V | word | ×10V_SF |
| 40191 | Phase Voltage BC | V | word | ×10V_SF |
| 40192 | Phase Voltage CA | V | word | ×10V_SF |
| 40193 | Phase Voltage AN | V | word | ×10V_SF |
| 40194 | Phase Voltage BN | V | word | ×10V_SF |
| 40195 | Phase Voltage CN | V | word | ×10V_SF |
| 40196 | Scale factor [V_SF] | | smallint | |
| 40197 | AC Power | W | smallint | ×10W_SF |
| 40198 | Scale factor [W_SF] | | smallint | |
| 40199 | Line Frequency | Hz | word | ×10HZ_SF |
| 40200 | Scale factor [HZ_SF] | | smallint | |
| 40201 | AC Apparent Power | VA | smallint | ×10VA_SF |
| 40202 | Scale factor [VA_SF] | | smallint | |
| 40203 | AC Reactive Power | var | smallint | ×10VAR_SF |
| 40204 | Scale factor [VAR_SF] | | smallint | |
| 40205 | AC Power Factor | % | smallint | ×10PF_SF |
| 40206 | Scale factor [PF_SF] | | smallint | |
| 40207 | AC Energy | Wh | dword | ×10WH_SF |
| 40209 | Scale factor [WH_SF] | | smallint | |
| 40210 | DC Current | A | word | ×10DCA_SF |
| 40211 | Scale factor [DCA_SF] | | smallint | |
| 40212 | DC Voltage | V | word | ×10DCV_SF |
| 40213 | Scale factor [DCV_SF] | | smallint | |
| 40214 | DC Power | W | smallint | ×10DCW_SF |
| 40215 | Scale factor [DCW_SF] | | smallint | |
| 40216 | Cabinet Temperature | deg C | smallint | ×10TMP_SF |
| 40217 | Heat Sink Temperature | deg C | smallint | ×10TMP_SF |
| 40218 | Transformer Temperature | deg C | smallint | ×10TMP_SF |
| 40219 | Other Temperature | deg C | smallint | ×10TMP_SF |
| 40220 | Scale factor [TMP_SF] | | smallint | |
| 40221 | Enumerated value. Operating state | | word | |
| 40222 | Vendor specific operating state code | | word | |
| 40223 | Bitmask value. Event fields | | dword | |
| 40225 | Reserved for future use | | dword | |
| 40227 | Vendor defined events | | dword | |
| 40229 | Vendor defined events | | dword | |
| 40231 | Vendor defined events | | dword | |
| 40233 | Vendor defined events | | dword | |
| 40237 | Type of DER device. Default value is 4 to indicate PV device. | | word | |
| 40238 | Continuous power output capability of the inverter. | W | word | ×10WRTG_SF |
| 40239 | Scale factor | | smallint | |
| 40240 | Continuous capability of the inverter. | VA | word | ×10VARTG_SF |
| 40241 | Scale factor | | smallint | |
| 40242 | Continuous VAR capability of the inverter in Q1. | var | smallint | ×10VARRTG_SF |
| 40243 | Continuous VAR capability of the inverter in Q2. | var | smallint | ×10VARRTG_SF |
This is not the complete map: 50 of 401 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.
SMA (Solar Inverter) - MODBUS Values
Registers in the map: 248 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 3 (holding registers). byte order big-endian. data types: dword, int64, smallint, utf8(8), word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 40185 | AC Current | A | word | ×10A_SF |
| 40186 | Phase A Current | A | word | ×10A_SF |
| 40187 | Phase B Current | A | word | ×10A_SF |
| 40188 | Phase C Current | A | word | ×10A_SF |
| 40189 | Scale factor [A_SF] | | smallint | |
| 40190 | Phase Voltage AB | V | word | ×10V_SF |
| 40191 | Phase Voltage BC | V | word | ×10V_SF |
| 40192 | Phase Voltage CA | V | word | ×10V_SF |
| 40193 | Phase Voltage AN | V | word | ×10V_SF |
| 40194 | Phase Voltage BN | V | word | ×10V_SF |
| 40195 | Phase Voltage CN | V | word | ×10V_SF |
| 40196 | Scale factor [V_SF] | | smallint | |
| 40197 | AC Power | W | smallint | ×10W_SF |
| 40198 | Scale factor [W_SF] | | smallint | |
| 40199 | Line Frequency | Hz | word | ×10HZ_SF |
| 40200 | Scale factor [HZ_SF] | | smallint | |
| 40201 | AC Apparent Power | VA | smallint | ×10VA_SF |
| 40202 | Scale factor [VA_SF] | | smallint | |
| 40203 | AC Reactive Power | var | smallint | ×10VAR_SF |
| 40204 | Scale factor [VAR_SF] | | smallint | |
| 40205 | AC Power Factor | % | smallint | ×10PF_SF |
| 40206 | Scale factor [PF_SF] | | smallint | |
| 40207 | AC Energy | Wh | dword | ×10WH_SF |
| 40209 | Scale factor [WH_SF] | | smallint | |
| 40210 | DC Current | A | word | ×10DCA_SF |
| 40211 | Scale factor [DCA_SF] | | smallint | |
| 40212 | DC Voltage | V | word | ×10DCV_SF |
| 40213 | Scale factor [DCV_SF] | | smallint | |
| 40214 | DC Power | W | smallint | ×10DCW_SF |
| 40215 | Scale factor [DCW_SF] | | smallint | |
| 40216 | Cabinet Temperature | deg C | smallint | ×10TMP_SF |
| 40217 | Heat Sink Temperature | deg C | smallint | ×10TMP_SF |
| 40218 | Transformer Temperature | deg C | smallint | ×10TMP_SF |
| 40219 | Other Temperature | deg C | smallint | ×10TMP_SF |
| 40220 | Scale factor [TMP_SF] | | smallint | |
| 40221 | Enumerated value. Operating state | | word | |
| 40222 | Vendor specific operating state code | | word | |
| 40223 | Bitmask value. Event fields | | dword | |
| 40225 | Reserved for future use | | dword | |
| 40227 | Vendor defined events | | dword | |
| 40229 | Vendor defined events | | dword | |
| 40231 | Vendor defined events | | dword | |
| 40233 | Vendor defined events | | dword | |
| 40237 | Type of DER device. Default value is 4 to indicate PV device. | | word | |
| 40238 | Continuous power output capability of the inverter. | W | word | ×10WRTG_SF |
| 40239 | Scale factor | | smallint | |
| 40240 | Continuous capability of the inverter. | VA | word | ×10VARTG_SF |
| 40241 | Scale factor | | smallint | |
| 40242 | Continuous VAR capability of the inverter in Q1. | var | smallint | ×10VARRTG_SF |
| 40243 | Continuous VAR capability of the inverter in Q2. | var | smallint | ×10VARRTG_SF |
This is not the complete map: 50 of 248 registers are listed above. Click "Read register values online" to read any register of your device in the browser, or download the program to log the complete map.
Related MODBUS registers maps
MODBUS Maps Index
SATEC Powermeters
SAIA Energy Meter ALD1-ALE3-AWD3
Saci (AHM1)
Satec (BFM136,BFM036)
Note: Products and companies mentioned here are used only for definition and identification purposes and can be trademarks and/or registered trademarks of the respective companies.