Connect Chint Instrument 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 Chint Instrument logging and read.
Do you not know the meter address? Scan the device address online
Chint Instrument (DDSU666-H) - MODBUS Mapping
Registers in the map: 113 (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: dword, integer, smallint, string(20), word.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 70 | Model ID | | word | |
| 7026 | ESU DC-DC version | | string(20) | |
| 7036 | ESU BMS version | | string(20) | |
| 15 | Serial number | | string(20) | |
| 71 | Number of strings | | word | |
| 73 | Rated power | kW | dword | ×0.001 |
| 75 | Maximum active power | kW | dword | ×0.001 |
| 77 | Maximum apparent power | kVA | dword | ×0.001 |
| 79 | Maximum reactive power to grid | kvar | integer | ×0.001 |
| 81 | Maximum reactive power from grid | kvar | integer | ×0.001 |
| 2088 | Insulation resistance | MOhm | word | ×0.001 |
| 2091 | Startup time | s | dword | |
| 2093 | Shutdown time | s | dword | |
| 10000 | Current time | s | dword | |
| 2110 | Some time 1 | s | dword | |
| 2156 | Some time 2 | s | dword | |
| 2160 | Some time 3 | s | dword | |
| 5113 | Some time 4 | s | dword | |
| 10500 | Some time 5 | s | dword | |
| 2000 | Status 1 | | word | |
| 2002 | Status 2 | | word | |
| 2003 | Status 3 | | dword | |
| 2008 | Alarm 1 | | word | |
| 2009 | Alarm 2 | | word | |
| 2010 | Alarm 3 | | word | |
| 2089 | Device status | | word | |
| 2090 | Fault code | | word | |
| 2016 | PVn voltage | V | smallint | ×0.1 |
| 2017 | PVn current | A | smallint | ×0.01 |
| 2064 | Input power | kW | integer | ×0.001 |
| 2066 | Line voltage A-B | V | word | ×0.1 |
| 2067 | Line voltage B-C | V | word | ×0.1 |
| 2068 | Line voltage C-A | V | word | ×0.1 |
| 2069 | Phase voltage A | V | word | ×0.1 |
| 2070 | Phase voltage B | V | word | ×0.1 |
| 2071 | Phase voltage C | V | word | ×0.1 |
| 2072 | Phase current A | A | integer | ×0.001 |
| 2074 | Phase current B | A | integer | ×0.001 |
| 2076 | Phase current C | A | integer | ×0.001 |
| 2078 | Peak power | kW | integer | ×0.001 |
| 2080 | Active power | kW | integer | ×0.001 |
| 2082 | Reactive power | kvar | integer | ×0.001 |
| 2084 | Power factor | | smallint | ×0.001 |
| 2085 | Grid frequency | Hz | word | ×0.01 |
| 2086 | Efficiency | % | word | ×0.01 |
| 2087 | Internal temperature | | smallint | ×0.1 |
| 2106 | Accumulated energy yield | kWh | dword | ×0.01 |
| 2114 | Daily energy yield | kWh | dword | ×0.01 |
| 7100 | Meter status | | word | |
| 7138 | Meter detection result | | word | |
This is not the complete map: 50 of 113 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.
Chint Instrument (DSU666,DTSU666) - MODBUS Maps
Connection and addressing notes
- Protocol
- Modbus RTU
- Interface
- RS-485
- Port protocol
- RS-485 port also supports DL/T 645-2007
- Default baud rate
- 9600 bps
- Data bits
- 8
- Stop bits
- 2 with Modbus RTU (n.2)
- Stop bits with DL/T 645-2007
- 1 (E.1)
- Parity
- none with Modbus RTU (n.2)
- Parity with DL/T 645-2007
- even (E.1)
- Default device address
- as printed on the meter label
- Factory protocol
- DL/T 645-2007
- Protocol register
- 002C
- Communication address register
- 002D
- Baud rate register
- 002E
- Programming password register
- 0001
Registers in the map: 40. function 3 (holding registers). byte order big-endian. data types: single, smallint.
| MODBUS offset | Description | Units | Data type | Scale |
|---|
| 0 | Version (rev.) | | smallint | |
| 2 | Electric energy zero clearing clr.e | | smallint | |
| 6 | Current transformer ratio (irat) | | smallint | |
| 7 | Potentia1 transformer ratio (urat) | | smallint | |
| 11 | Meter type (meter type) | | smallint | |
| 47 | Second | | smallint | |
| 48 | Minute | | smallint | |
| 49 | Hour | | smallint | |
| 50 | Day | | smallint | |
| 51 | Month | | smallint | |
| 52 | Year | | smallint | |
| 8192 | Line line voltage (uab) | V | single | ×0.1 |
| 8194 | Line line voltage (ubc) | V | single | ×0.1 |
| 8196 | Line line voltage (uca) | V | single | ×0.1 |
| 8198 | Phase phase voltage (ua) | V | single | ×0.1 |
| 8200 | Phase phase voltage (ub) | V | single | ×0.1 |
| 8202 | Phase phase voltage (uc) | V | single | ×0.1 |
| 8204 | The data of three phase current (ia) | A | single | ×0.01 |
| 8206 | The data of three phase current (ib) | A | single | ×0.01 |
| 8208 | The data of three phase current (ic) | A | single | ×0.01 |
| 8210 | Conjunction active power | W | single | ×0.1 |
| 8212 | A phase active power (pa) | W | single | ×0.1 |
| 8214 | B phase active power (pb) | W | single | ×0.1 |
| 8216 | C phase active power (pc) | W | single | ×0.1 |
| 8218 | Conjunction reactive power (qt) | var | single | ×0.1 |
| 8220 | A phase reactive power (qa) | var | single | ×0.1 |
| 8222 | B phase reactive power (qb) | var | single | ×0.1 |
| 8224 | C phase reactive power (qc) | var | single | ×0.1 |
| 8234 | Conjunction power factor (pft) | | single | ×0.01 |
| 8236 | A phase power factor (invalid when three phase three wire) (pfa) | | single | ×0.01 |
| 8238 | B phase power factor (invalid when three phase three wire) (pfb) | | single | ×0.01 |
| 8240 | C phase power factor (invalid when three phase three wire) (pfc) | | single | ×0.01 |
| 8260 | Frequency (freq) | | single | ×0.01 |
| 8272 | Total active power demand (dmpt) | | single | ×0.1 |
| 16414 | Positive active (current, imp) | | single | |
| 16424 | Negative active total energy (current, exp) | | single | |
| 16434 | Q1 reactive total energy (current) | | single | |
| 16444 | Q2 reactive total energy (current) | | single | |
| 16454 | Q3 reactive total energy (current) | | single | |
| 16464 | Q4 reactive total energy (current) | | single | |
Related MODBUS registers maps
MODBUS Maps Index
Chauvin Arnoux (MEMO P200)
Cewe (Prometer)
Chint Power (CPS)
Circutor (CVM-96)
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.
