Communication protocol

Modbus RTU

M4M 20 Modbus, M4M 20 I/O, M4M 20

Rogowski

M4M 30 Modbus, M4M 30 I/O, M4M 30

Rogowski

Communication interface

RS485 with optical isolation

Baud rate

9.6, 19.2, 38.4, 57.6, 115.2 kbps

Parity number

Odd, Even, None

Stop bit

1, 2

Address

1-247

Connector

3 pole terminal

Profibus DP-V0

M4M 20 Profibus

M4M 30 Profibus

Protocol

Profibus with slave DP-V0 function in compliance with IEC 61158 regulations

Communication interface

RS485 with optical isolation

Baud rate

Automatic detection [9.6 - 12 Mbps]

Address

0-126

Connector

DB 9 female connector (do not use connectors with 90° cable outlet)

LED indicators

Green for communication status

Red for communication error

Modbus TCP/IP

M4M 20 Ethernet

M4M 30 Ethernet

Protocol

Modbus TCP/IP

Communication interface

RJ45

RJ45 (2 ports for daisy-chain)

BACnet

M4M 20 Bacnet

M4M 30 Bacnet

Protocol

BACnet/IP

Communication interface

RJ45

Bluetooth

Type

BLE (Bluetooth Low Energy)

Real-time clock

Clock drift

-

~ 0.4 seconds per day

Battery backup time

-

~ 3 years without control power

Standards

Power metering and monitoring devices (PMD)

IEC 61557-12 (IEC 62053-22, IEC 62053-23)

Electrical safety

IEC 61010-1

EMC

IEC 61326-1 (IEC 61000-3-2, IEC 61000-3-3, IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-

4, IEC 61000-4-5, IEC 61000-4-6, IEC 61000-4-8, IEC 61000-4-11)

7

T EC HNI C A L FE AT U R E S

M4M 20

M4M 30