CARLO GAVAZZI EM21 - COMMUNICATION PROTOCOL V1 REV0 - Instantaneous Variables and Meters; Firmware Version and Revision Code; Programming Lock Status

Energy management
EM24-DIN Communication Protocol
8
2.3 Instantaneous variables and meters
MODBUS: read only mode with functions code 03 and 04 Table 2.3-1
Modicom
address
Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
300001 0000h
2 V L1-N INT32
300003 0002h
2 V L2-N INT32
300005 0004h
2 V L3-N INT32
300007 0006h
2 V L1-L2 INT32
300009 0008h
2 V L2-L3 INT32
300011 000Ah
2 V L3-L1 INT32
Value weight: Volt*10
300013 000Ch
2 A L1 INT32
300015 000Eh
2 A L2 INT32
300017 0010h
2 A L3 INT32
Value weight: Ampere*1000
300019 0012h
2 W L1 INT32
300021 0014h
2 W L2 INT32
300023 0016h
2 W L3 INT32
Value weight: Watt*10
300025 0018h
2 VA L1 INT32
300027 001Ah
2 VA L2 INT32
300029 001Ch
2 VA L3 INT32
Value weight: VA*10
300031 001Eh
2 VAR L1 INT32
300033 0020h
2 VAR L2 INT32
300035 0022h
2 VAR L3 INT32
Value weight: var*10
300037 0024h
2
V L-N ∑
INT32
300039
0026h 2
V L-L ∑
INT32
Value weight: Volt*10
300041 0028h
2
W ∑
INT32 Value weight: Watt*10
300043 002Ah
2
VA ∑
INT32 Value weight: VA*10
300045 002Ch
2
VAR ∑
INT32 Value weight: var*10
300047 002Eh
1 PF L1 INT16
300048 002Fh
1 PF L2 INT16
300049 0030h
1 PF L3 INT16
300050
0031h 1
PF ∑
INT16
Negative values correspond to
lead(C), positive value correspond
to lag(L)
Value weight: PF*1000
300051 0032h 1 Phase sequence INT16
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
300052 0033h
1 Hz INT16 Value weight: Hz*10
300053 0034h
2 KWh(+) TOT INT32 Value weight: kWh*10
300055 0036h
2 Kvarh(+) TOT INT32 Value weight: kvarh*10
2.4 Firmware version and revision code
MODBUS: read only mode with functions code 03 and 04 limited to a word at a time Table 2.4-1
Modicom
address
Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
300771
0302h 1 Version code UINT 16 Value=0: Version “A”
300772
0303h 1 Revision code UINT 16 Value=0: Revision “0”
2.5 Programming lock status
MODBUS: read only mode with functions code 03 and 04 limited to a word at a time Table 2.5-1
Modicom
address
Physical
address
Length
(words)
VARIABLE
ENG. UNIT
Data
Format
Notes
300773
0304h 1 Programming lock (trimmer
position in the rear of
the display)
UINT 16 Value=1: programming locked
Value=0: programming unlocked