Connect Seneca 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 Seneca logger and poll.
Do you not know the meter address? Scan the device address online
Seneca (S203) - MODBUS Mapping
Connection and addressing notes
- Register addressing
- registers are 4xxxx holding register numbers and the map uses 0-based offsets (40135 = 134)
- 32-bit floats
- occupy two registers with the MSW at the lower address and the LSW at the next one
- Normalized values
- 16 bit words (0 to 10000)
- Configuration
- Easy-SETUP configuration is possible over RS232 or RS485
Registers in the map: 53 (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: single, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 134 | Voltage A | | single | |
| 136 | Voltage B | | single | |
| 138 | Voltage C | | single | |
| 140 | Voltage 3ph | | single | |
| 192 | Voltage A | | word | |
| 193 | Voltage B | | word | |
| 194 | Voltage C | | word | |
| 195 | Voltage 3ph | | word | |
| 142 | Current A | | single | |
| 144 | Current B | | single | |
| 146 | Current C | | single | |
| 148 | Current 3ph | | single | |
| 196 | Current A | | word | |
| 197 | Current B | | word | |
| 198 | Current C | | word | |
| 199 | Current 3ph | | word | |
| 150 | Active pow A | | single | |
| 152 | Active pow B | | single | |
| 154 | Active pow C | | single | |
| 156 | Active pow 3ph | | single | |
| 200 | Active pow A | | word | |
| 201 | Active pow B | | word | |
| 202 | Active pow C | | word | |
| 203 | Active pow 3ph | | word | |
| 158 | Reactive pow A | | single | |
| 160 | Reactive pow B | | single | |
| 162 | Reactive pow C | | single | |
| 164 | Reactive pow 3 ph | | single | |
| 204 | Reactive pow A | | word | |
| 205 | Reactive pow B | | word | |
| 206 | Reactive pow C | | word | |
| 207 | Reactive pow 3 ph | | word | |
| 166 | Apparent pow A | | single | |
| 168 | Apparent pow B | | single | |
| 170 | Apparent pow C | | single | |
| 172 | Apparent pow 3 ph | | single | |
| 208 | Apparent pow A | | word | |
| 209 | Apparent pow B | | word | |
| 210 | Apparent pow C | | word | |
| 211 | Apparent pow 3 ph | | word | |
| 184 | Energy A | | single | |
| 186 | Energy B | | single | |
| 188 | Energy C | | single | |
| 190 | Energy 3ph | | single | |
| 174 | Cos A | | single | |
| 176 | Cos B | | single | |
| 178 | Cos C | | single | |
| 180 | Cos 3ph | | single | |
| 212 | Cos A | | word | |
| 213 | Cos B | | word | |
This is not the complete map: 50 of 53 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.
Seneca (S604) - MODBUS Registers
Connection and addressing notes
- Protocol
- Modbus
- Function codes
- 03 and 04 read the registers
- Register addressing
- addresses are hexadecimal and used directly as 0-based offsets
- Value size
- each value occupies 2 words
- INTEGER register bank
- starts at 0x0000
- IEEE register bank
- starts at 0x1000 in the same register bank
Registers in the map: 397 (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: single.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 4096 | Phase 1 N voltage | V | single | |
| 4098 | Phase 2 N voltage | V | single | |
| 4100 | Phase 3 N voltage | V | single | |
| 4102 | Line 12 voltage | V | single | |
| 4104 | Line 23 voltage | V | single | |
| 4106 | Line 31 voltage | V | single | |
| 4108 | System voltage | V | single | |
| 4110 | Phase 1 current | A | single | |
| 4112 | Phase 2 current | A | single | |
| 4114 | Phase 3 current | A | single | |
| 4116 | Neutral current | A | single | |
| 4118 | System current | A | single | |
| 4120 | Phase 1 active power | W | single | |
| 4122 | Phase 2 active power | W | single | |
| 4124 | Phase 3 active power | W | single | |
| 4126 | System active power | W | single | |
| 4128 | Phase 1 apparent power | VA | single | |
| 4130 | Phase 2 apparent power | VA | single | |
| 4132 | Phase 3 apparent power | VA | single | |
| 4134 | System apparent power | VA | single | |
| 4136 | Phase 1 reactive power | var | single | |
| 4138 | Phase 2 reactive power | var | single | |
| 4140 | Phase 3 reactive power | var | single | |
| 4142 | System reactive power | var | single | |
| 4144 | Phase 1 power factor | | single | |
| 4146 | Phase 2 power factor | | single | |
| 4148 | Phase 3 power factor | | single | |
| 4150 | System power factor | | single | |
| 4152 | Phase 1 dpf | | single | |
| 4154 | Phase 2 dpf | | single | |
| 4156 | Phase 3 dpf | | single | |
| 4158 | Phase 1 tangent | | single | |
| 4160 | Phase 2 tangent | | single | |
| 4162 | Phase 3 tangent | | single | |
| 4164 | System tangent | | single | |
| 4166 | Phase 1 N voltage thd | % | single | |
| 4168 | Phase 2 N voltage thd | % | single | |
| 4170 | Phase 3 N voltage thd | % | single | |
| 4172 | Line 12 voltage thd | % | single | |
| 4174 | Line 23 voltage thd | % | single | |
| 4176 | Line 31 voltage thd | % | single | |
| 4178 | Phase 1 current thd | % | single | |
| 4180 | Phase 2 current thd | % | single | |
| 4182 | Phase 3 current thd | % | single | |
| 4184 | Neutral current thd | % | single | |
| 4186 | Frequency | Hz | single | |
| 4188 | Sequence ($00=123 ccw, $01=321 cw, $02=not defined) | | single | |
| 4190 | Hourcounter | h | single | |
| 4192 | Hourcounter | h | single | |
| 4366 | Phase 1 current dmd | A | single | |
This is not the complete map: 50 of 397 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.
Seneca (S700) - MODBUS Registers Map
Connection and addressing notes
- Protocol
- Modbus
- Function codes
- 03 and 04 read the registers
- Register addressing
- addresses are hexadecimal and used directly as 0-based offsets
- Value size
- each value occupies 2 words
- INTEGER register bank
- starts at 0x0000
- IEEE register bank
- starts at 0x1000 in the same register bank
Registers in the map: 397 (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: single.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 4096 | Phase 1 N voltage | V | single | |
| 4098 | Phase 2 N voltage | V | single | |
| 4100 | Phase 3 N voltage | V | single | |
| 4102 | Line 12 voltage | V | single | |
| 4104 | Line 23 voltage | V | single | |
| 4106 | Line 31 voltage | V | single | |
| 4108 | System voltage | V | single | |
| 4110 | Phase 1 current | A | single | |
| 4112 | Phase 2 current | A | single | |
| 4114 | Phase 3 current | A | single | |
| 4116 | Neutral current | A | single | |
| 4118 | System current | A | single | |
| 4120 | Phase 1 active power | W | single | |
| 4122 | Phase 2 active power | W | single | |
| 4124 | Phase 3 active power | W | single | |
| 4126 | System active power | W | single | |
| 4128 | Phase 1 apparent power | VA | single | |
| 4130 | Phase 2 apparent power | VA | single | |
| 4132 | Phase 3 apparent power | VA | single | |
| 4134 | System apparent power | VA | single | |
| 4136 | Phase 1 reactive power | var | single | |
| 4138 | Phase 2 reactive power | var | single | |
| 4140 | Phase 3 reactive power | var | single | |
| 4142 | System reactive power | var | single | |
| 4144 | Phase 1 power factor | | single | |
| 4146 | Phase 2 power factor | | single | |
| 4148 | Phase 3 power factor | | single | |
| 4150 | System power factor | | single | |
| 4152 | Phase 1 dpf | | single | |
| 4154 | Phase 2 dpf | | single | |
| 4156 | Phase 3 dpf | | single | |
| 4158 | Phase 1 tangent | | single | |
| 4160 | Phase 2 tangent | | single | |
| 4162 | Phase 3 tangent | | single | |
| 4164 | System tangent | | single | |
| 4166 | Phase 1 N voltage thd | % | single | |
| 4168 | Phase 2 N voltage thd | % | single | |
| 4170 | Phase 3 N voltage thd | % | single | |
| 4172 | Line 12 voltage thd | % | single | |
| 4174 | Line 23 voltage thd | % | single | |
| 4176 | Line 31 voltage thd | % | single | |
| 4178 | Phase 1 current thd | % | single | |
| 4180 | Phase 2 current thd | % | single | |
| 4182 | Phase 3 current thd | % | single | |
| 4184 | Neutral current thd | % | single | |
| 4186 | Frequency | Hz | single | |
| 4188 | Sequence ($00=123 ccw, $01=321 cw, $02=not defined) | | single | |
| 4190 | Hourcounter | h | single | |
| 4192 | Hourcounter | h | single | |
| 4366 | Phase 1 current dmd | A | single | |
This is not the complete map: 50 of 397 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.
Seneca (Z203) - MODBUS Maps
Connection and addressing notes
- Register addressing
- registers are 4xxxx holding register numbers and the map uses 0-based offsets (40081 = 80)
- 32-bit floats
- occupy two registers with the MSW at the lower address and the LSW at the next one
- Energy value
- signed long in two registers
Registers in the map: 11. function 3 (holding registers). byte order big-endian. data types: single, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 80 | Voltage | | single | |
| 94 | Voltage | | word | |
| 82 | Current | | single | |
| 95 | Current | | word | |
| 84 | Active power | | single | |
| 88 | Reactive power | | single | |
| 97 | Reactive power | | single | |
| 90 | Cos | | single | |
| 98 | Cos | | single | |
| 86 | Freq | | single | |
| 100 | Frequency | | word | |
Related MODBUS registers maps
MODBUS Maps Index
Selec (MRJ4M)
Secure (Elite 440)
Siemens (SEM3 Dual Phase)
Siemens Sentron PAC 2200
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.
