Connect CET 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 CET logger and poll.
Do you not know the meter address? Scan the device address online
CET (PMC-D721MD) - MODBUS Values
Connection and addressing notes
- Protocol
- Modbus
- Function codes
- 03 read holding registers, 05 force single coil, 16 preset multiple registers
- Byte order
- big endian
Registers in the map: 6. function 3 (holding registers). byte order big-endian. data types: integer, single, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 0 | U | V | single | |
| 2 | I | A | single | |
| 4 | kW | kW | single | |
| 30 | DI status | | word | |
| 40 | kWh import | kWh | integer | ×0.01 |
| 42 | kWh export | kWh | integer | ×0.01 |
CET (PMC-D726M) - MODBUS Registers
Connection and addressing notes
- Protocol
- Modbus
- Function codes
- 03 read holding registers, 05 force single coil, 16 preset multiple registers
- Byte order
- big endian
Registers in the map: 96 (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, integer, single, smallint, word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 0 | Uan1 | V | dword | |
| 2 | Ubn1 | V | dword | |
| 4 | Ucn1 | V | dword | |
| 6 | ULN average | V | dword | |
| 8 | Uab | V | dword | |
| 10 | Ubc | V | dword | |
| 12 | Uca | V | dword | |
| 14 | ULL average | V | dword | |
| 16 | Ia | A | dword | |
| 18 | Ib | A | dword | |
| 20 | Ic | A | dword | |
| 22 | I average | A | dword | |
| 24 | kWa1 | kW | integer | |
| 26 | kWb1 | kW | integer | |
| 28 | kWc1 | kW | integer | |
| 30 | kW total | kW | integer | |
| 32 | Kvara1 | kvar | integer | |
| 34 | Kvarb1 | kvar | integer | |
| 36 | Kvarc1 | kvar | integer | |
| 38 | Kvar total | kvar | integer | |
| 40 | kVAa1 | kVA | integer | |
| 42 | kVAb1 | kVA | integer | |
| 44 | kVAc1 | kVA | integer | |
| 46 | kVA total | kVA | integer | |
| 48 | PFa1 | | smallint | |
| 49 | PFb1 | | smallint | |
| 50 | PFc1 | | smallint | |
| 51 | PF average | | smallint | |
| 52 | FREQ | Hz | smallint | |
| 53 | Uan/Uab (3P3W) angle | deg | word | ×0.01 |
| 54 | Ubn/Ubc (3P3W) angle | deg | word | ×0.01 |
| 55 | Ucn/Uca (3P3W) angle | deg | word | ×0.01 |
| 56 | Ia angle | deg | word | ×0.01 |
| 57 | Ib angle | deg | word | ×0.01 |
| 58 | Ic angle | deg | word | ×0.01 |
| 59 | In (Calculated) | A | dword | ×0.001 |
| 61 | Phase A fundamental PF | A | smallint | ×0.001 |
| 62 | Phase B fundamental PF | A | smallint | ×0.001 |
| 63 | Phase C fundamental PF | A | smallint | ×0.001 |
| 95 | Setpoint status3 | A | smallint | ×0.001 |
| 96 | DO status4 | A | smallint | ×0.001 |
| 97 | DI status5 | A | smallint | ×0.001 |
| 98 | SOE pointer6 | A | dword | ×0.001 |
| 1300 | Ia TDD | | single | |
| 1302 | Ib TDD | | single | |
| 1304 | Ic TDD | | single | |
| 1306 | Ia TDD odd | | single | |
| 1308 | Ib TDD odd | | single | |
| 1310 | Ic TDD odd | | single | |
| 1312 | Ia TDD even | | single | |
This is not the complete map: 50 of 96 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
CET (PMC-53A)
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Carlo Gavazzi (EM33)
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