• the values transmitted - energy, current, voltage, frequency - are instant values, while power values are the average values within the transmission interval
• "error flag" is a diagnostic variable used to communicate an overflow condition which makes the measured data invalid:
Bit
8
7
6
5
[MSb]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
Engineering unit
Ampere*0.001
Ampere*0.001
Ampere*0.001
Volt*0.1
Volt*0.1
Volt*0.1
Hz*0.1
Engineering unit
Wh*100
Wh*100
kVarh*0.1
kVarh*0.1
Watt*0.1
Watt*0.1
Var
Var
4
3
2
1
1P system
[LSb]
0
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
DIF
VIF
[hex]
[hex]
04
FD
04
FD
04
FD
04
FD
04
FD
04
FD
02
FB
01
FD
DIF
VIF
[hex]
[hex]
04
05
04
85
04
FB
04
FB
04
2A
04
AA
04
FB
04
FB
01
FD
Meaning
Notes
3P system
• N.A. (not available): the bit cannot be set because the relevant
measurement is not defined, bit = 0.
• Frequency out of range is set when occurs an overflow or an under-
No error
flow of the frequency measured by measuring module.
V1N overflow
• In system 3P, monitored voltages are the L-N voltages referred to a
virtual neutral.
N.A.
V2N overflow
N.A.
V3N overflow
I1 overflow
N.A.
I2 overflow
N.A.
I3 overflow
Frequency out of range
Essential information
VIFE#1
VIFE#2
[hex]
[hex]
D9
FC
D9
FC
D9
FC
C8
FC
C8
FC
C8
FC
2E
17
VIFE#1
VIFE#2
[hex]
[hex]
3C
82
75
82
F5
3C
14
94
3C
17
EM24 W1 - Instruction manual | CARLO GAVAZZI Controls SpA