Circutor CVM-MINI Series Uživatelský manuál stáhnout pdf (Strana 23)

Page 23 of 26

Code 8 bit binary, hexadecimal 0-9, A-F.

2 hexadecimal characters contained in each 8-bit field in

the message.

Bits per byte 8 data bits.

Field Check-Error CRC Type (Cyclical Redundancy Check).

Modbus functions used:

Function 01 Reading the status of the relays.

Function 03 and 04 Reading n Words (16 bits-2 bytes). Function used for

reading the electrical parameters that the

CVM-MINI

measuring. All electrical parameters are long with 32 bits,

because of this two Words are required to request each

parameter.

(4 bytes - XX XX XX XX)

Function 05 Writing a relay.

6.1 MODBUS memory map

PARAMETER SYMBOL

Instant Maximum

Minimum Units

Voltage phase

V L1

00-01 60-61 C0-C1

V x10

Current

A L1

02-03 62-63 C2-C3

Active power

kW L1

04-05 64-65 C4-C5

Reactive power

Kvar L1

06-07 66-67 C6-C7

Apparent power

kV·A L1

4A-4B AA-AB 10A-10B

Power factor

PF L1

08-09 68-69 C8-C9

x 100

Voltage phase

V L2

0A-0B 6A-6B CA-CB

V x10

Current

A L2

0C-0D 6C-6D CC-CD

Active power

kW L2

0E-0F 6E-6F CE-CF

Reactive power

Kvar L2

10-11 70-71 D0-D1

Apparent power

kV·A L2

4C-4D AC-AD 10C-10D

Power factor

PF L2

12-13 72-73 D2-D3

x 100

Voltage phase

V L3

14-15 74-75 D4-D5

V x10

Current

A L3

16-17 76-77 D6-D7

Active power

kW L3

18-19 78-79 D8-D9

Reactive power

Kvar L3

1A-1B 7A-7B DA-DB

Apparent power

kV·A L3

4E-4F AE-AF 10E-10F

Power factor

PF L3

1C-1D 7C-7D DC-DD

x 100

Temperature

ºC

50-51 B0-B1 110-111

ºC x 10

1 2 ... 18 19 20 21 22 23 24 25 26

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