Data Sheet
Table Of Contents
- 1.1 Introduction
- 1.2 MODBUS functions
- 1.3 Application notes
- 2 TABLES
- 2.1 Data format representation In Carlo Gavazzi instruments
- 2.2 Geometric representation
- 2.3 Maximum and minimum electrical values in GNM3D SERIES
- 2.4 Instantaneous variables and meters (grouped by variable type)
- Instantaneous variables and meters (grouped by phase)
- 2.5 Firmware version and revision code
- 2.6 GARO identification code
- 2.7 Programming parameter tables
GNM3D and GNM3T Series Communication Protocol
10
Instantaneous variables and meters (grouped by phase)
MODBUS: read only mode with functions code 03 and 04 Table 2.5-1
Modicom
address
Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
System variables
300259 0102h 2 V L-N sys INT32 Value weight: Volt*10
300261 0104h 2 V L-L sys INT32 Value weight: Volt*10
300263 0106h 2 kW sys INT32 Value weight: Watt*10
300265 0108h 2 kVA sys INT32 Value weight: VA*10
300267 010Ah 2 kvar sys INT32 Value weight: var*10
300269 010Ch 2 PF sys INT32 (*) Value weight: PF*1000
300271
010Eh
2
Phase sequence
INT32
The value –1 corresponds to L1-L3-L2
sequence, the value 0 corresponds to L1-L2-
L3 sequence. The phase sequence value is
meaningful only in a 3-phase system
300273 0110h 2 Hz INT32 Value weight: Hz*10
Total energies and dmd power
300275 0112h 2 kWh (+) TOT INT32 Value weight: kWh*10
300277 0114h 2 Kvarh (+) TOT INT32 Value weight: kvarh*10
300279 0116h 2 kWh (-) TOT INT32 Value weight: kWh*10
300281 0118h 2 kvarh (-) TOT INT32 Value weight: kvarh*10
300283 011Ah 2 kW dmd INT32 Value weight: Watt*10
300285 011Ch 2 kW dmd peak INT32 Value weight: Watt*10
Phase 1 variables
300287 011Eh 2 V L1-L2 INT32 Value weight: Volt*10
300289 0120h 2 V L1-N INT32 Value weight: Volt*10
300291 0122h 2 A L1 INT32 Value weight: Ampere*1000
300293 0124h 2 kW L1 INT32 Value weight: Watt*10
300295 0126h 2 kVA L1 INT32 Value weight: VA*10
300297 0128h 2 kvar L1 INT32 Value weight: var*10
300299 012Ah 2 PF L1 INT32 (*) Value weight: PF*1000
Phase 2 variables
300301 012Ch 2 V L2-L3 INT32 Value weight: Volt*10
300303 012Eh 2 V L2-N INT32 Value weight: Volt*10
300305 0130h 2 A L2 INT32 Value weight: Ampere*1000
300307 0132h 2 kW L2 INT32 Value weight: Watt*10
300309 0134h 2 kVA L2 INT32 Value weight: VA*10
300311 0136h 2 kvar L2 INT32 Value weight: var*10
300313 0138h 2 PF L2 INT32 (*) Value weight: PF*1000
Phase 3 variables
300315 013Ah 2 V L3-L1 INT32 Value weight: Volt*10
300317 013Ch 2 V L3-N INT32 Value weight: Volt*10
300319 013Eh 2 A L3 INT32 Value weight: Ampere*1000
300321 0140h 2 kW L3 INT32 Value weight: Watt*10
300323 0142h 2 kVA L3 INT32 Value weight: VA*10
300325 0144h 2 kvar L3 INT32 Value weight: var*10
300327 0146h 2 PF L3 INT32 (*) Value weight: PF*1000
Other energies
300329 0148h 2 kWh (+) PARTIAL INT32 Value weight: kWh*10
300331 014Ah 2 Kvarh (+) PARTIAL INT32 Value weight: kvarh*10
300333 014Ch 2 kWh (+) L1 INT32 Value weight: kWh*10
300335 014Eh 2 kWh (+) L2 INT32 Value weight: kWh*10
300337 0150h 2 kWh (+) L3 INT32 Value weight: kWh*10
300339 0152h 2 kWh (+) t1 INT32 Value weight: kWh*10
300341 0154h 2 kWh (+) t2 INT32 Value weight: kWh*10
Note *: Negative values correspond to ex
ported active power, positive values correspond to imported active power.
Note Table 2.4-1 and 2.5-1 are equivalent and includes a copy of the same variable values.
Note For meters that support also 1-phase and 2-phase systems, the values relevant to phase 2 and 3 can still be read with a valid value, equal to "0"
Programming parameter note: reading values in addresses not specified in the below tables returns an illegal
data address exception.
300249
00F8h
2 A n INT32
Value weight: Ampere*1000, only GNM3T
series
300255
00FEh
2 Run hour meter INT32
Value weight: hours*100, only GNM3T series