7�3�- Modbus Commands; 7�3�1� Measurement Variables - Circutor CVM-E3-MINI-ITF Instruction Manual

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7.3.- MODBUS COMMANDS
Two different memory maps have been implemented for the Measurement, Energy and Voltage
and Current harmonics variables. However, they have the same functions:
 Map 1, uses the addresses of the CVM-MINI device, entering the addresses of the
new parameters measured by this new device.
 Map 2, uses the addresses of the CVM-C10 device (adding 0x1000 to all addresses).
Except for 3 parameters, the CVM-C10 and the CVM-E3-MINI use the same parameters.
Map 2 should be used if a Modbus map is going to be implemented from scratch. However,
if the map is already being used in another device, use Map 1 for CVM-MINI and Map 2 for
CVM-C10.
7�3�1� MEASUREMENT VARIABLES
All the adresses of Modbus memory are in Hexadecimal.
For these variables is implemented the Function 0x03 and 0x04�
Parameter
L1 Phase voltage
L1 Current
L1 Active Power
L1 Reactive Power
L1 Inductive Power
L1 Capacitive Power
L1 Apparent Power
L1 Power Factor
Cos φ L1
L2 Phase voltage
L2 Current
L2 Active Power
L2 Reactive Power
L2 Inductive Power
L2 Capacitive Power
L2 Apparent Power
L2 Power Factor
Cos φ L2
L3 Phase voltage
L3 Current
84
Address Function
register
0A 05
Table 23: Modbus memory Map 1: Measurement variables
Map 1
Symbol Instantaneous
V 1
A 1
kW 1
kvar 1
kvarL 1
kvarC 1
kVA 1
PF 1
Cos φ 1
V 2
A 2
kW 2
kvar 2
kvarL 2
kvarC 2
kVA 2
PF 2
Cos φ 2
V 3
A 3
Initial
Value CRC
0834 FF00 CEEF
Maximum
00-01 60-61
02-03 62-63
04-05 64-65
06-07 66-67
12C-12D 13E-13F
12E-12F 140-141
4A-4B AA-AB
08-09 68-69
130-131 142-143
0A-0B 6A-6B
0C-0D 6C-6D
0E-0F 6E-6F
10-11 70-71
132-133 144-145
134-135 146-147
4C-4D AC-AD
12-13 72-73
136-137 148-149
14-15 74-75
16-17 76-77
CVM-E3-MINI
Minimum Units
C0-C1 V x 10
C2-C3 mA
C4-C5 W
C6-C7 var
150-151 var
152-153 var
10A-10B VA
C8-C9 x 100
154-155 x 100
CA-CB V x 10
CC-CD mA
CE-CF W
D0-D1 var
156-157 var
158-159 var
10C-10D VA
D2-D3 x 100
15A-15B x 100
D4-D5 V x 10
D6-D7 mA
Instruction Manual