Connect Elster 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 Elster logging and read.
Do you not know the meter address? Scan the device address online
Elster (A110C,A1100) - MODBUS Measurements
Registers in the map: 16. function 4 (input registers). byte order big-endian. data types: integer, single.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 1 | Meter1 import rate1 | | integer | |
| 3 | Meter1 export rate1 | | integer | |
| 5 | Meter1 import rate2 | | integer | |
| 7 | Meter1 export rate2 | | integer | |
| 9 | Meter2 import rate1 | | integer | |
| 11 | Meter2 export rate1 | | integer | |
| 13 | Meter2 import rate2 | | integer | |
| 15 | Meter2 export rate2 | | integer | |
| 17 | Meter1 import rate1 | | single | |
| 19 | Meter1 export rate1 | | single | |
| 21 | Meter1 import rate2 | | single | |
| 23 | Meterl export rate1 | | single | |
| 25 | Meter2 import rate1 | | single | |
| 27 | Meter2 export rate1 | | single | |
| 29 | Meter2 import rate2 | | single | |
| 31 | Meter2 export rate2 | | single | |
Elster (A1140,A1700) - MODBUS Registers
Registers in the map: 62 (the first 50 are listed below; the browser reader and the data loggers use the complete map). function 4 (input registers). byte order big-endian. data types: integer, single, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 1 | Va | | single | |
| 3 | Vb | | single | |
| 5 | Vc | | single | |
| 7 | La | | single | |
| 9 | Lb | | single | |
| 11 | Ic | | single | |
| 13 | Pa | | single | |
| 15 | Pb | | single | |
| 17 | Pc | | single | |
| 19 | Qa | | single | |
| 21 | Ob | | single | |
| 23 | Qc | | single | |
| 25 | So | | single | |
| 27 | Sb | | single | |
| 29 | Sc | | single | |
| 31 | Pfa | | single | |
| 33 | Pfb | | single | |
| 35 | Pfc | | single | |
| 37 | Psum | | single | |
| 39 | QSUM | | single | |
| 41 | SSUM | | single | |
| 43 | pfsUM | | single | |
| 45 | Freqa | | single | |
| 47 | Freqb | | single | |
| 49 | Freqc | | single | |
| 53 | kWhTotalExport | | integer | |
| 55 | kVarhImportLag | | integer | |
| 57 | kVarhImportLead | | integer | |
| 59 | kVarhExportLag | | integer | |
| 63 | VAhTotal | | integer | |
| 65 | Cust1 | | integer | |
| 67 | Cust2 | | integer | |
| 69 | Cust3 | | integer | |
| 71 | TOU1 | | integer | |
| 73 | TOU2 | | integer | |
| 75 | TOU3 | | integer | |
| 77 | TOU4 | | integer | |
| 79 | HistTOUl | | integer | |
| 81 | HistTOU2 | | integer | |
| 83 | HistTOU3 | | integer | |
| 85 | HistTOU4 | | integer | |
| 95 | LastEnergyRead | | word | |
| 96 | LastInstRead | | word | |
| 97 | HIST kWhTotalImport | | integer | |
| 99 | HIST kWhTotalExport | | integer | |
| 101 | HIST kVarhImportLag | | integer | |
| 103 | HIST kVarhImportLead | | integer | |
| 105 | HIST kVarhExportLag | | integer | |
| 107 | HIST kVarhExportLead | | integer | |
| 109 | HIST VAh Total | | integer | |
This is not the complete map: 50 of 62 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
Elspec (G4400)
Elnet (GR,PQ,LT,LTP,MC,PIC,LTE,LTC)
Enerdis (Enerium 100-200)
Epever (B Series)
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.
