MODEL: 72EM2-M4
Housing material: Flame-resistant resin (black)
Gateway 72-UNIT Series
Isolation: Ethernet to RS-485 to FG to power
DIP SW Setting: Selection of IP Address and
Maintenance/Normal operation
PC configuration: IP address and transmission speed are
configured via a web browser software (provided by the
user).
ETHERNET COMMUNICATION ADAPTOR
(Modbus use)
Functions & Features
• Bidirectional protocol converter for Modbus/TCP (Ethernet)
and Modbus RTU (RS-485)
Internet Explorer 6.0 or higher
Status indicator
• Fast response time thanks to the Cache functions
• Expansion over 31 nodes is possible using additional
72EM2 units
RUN: Green LED light flashes in normal operating
conditions in 1-sec. cycles; 2-sec. cycles when configurating
the unit.
SEND: Green LED light turns on when sending data to
Ethernet.
72
(2.83)
FIELD: Green LED light turns on when sending data to RS-
485.
ET
H
ER
N
ET
80
(3.15)
R
S-
485
R
U
N
SE
N
D
FI
EL
D
■ Modbus RTU
C
N
FG
•Nodes: Max. 31
•Supported Commands
149
(5.87)
Read Coil Status (01)
mm (inch)
Read Input Status (02)
Read Holding Registers (03)
Read Input Registers (04)
Force Single Coil (05)
MODEL: 72EM2–M4–M2
Preset Single Register (06)
Diagnostics (08)
Fetch Comm. Event Counter (11)
Fetch Comm. Event Log (12)
Force Multiple Coils (15)
ORDERING INFORMATION
Code number: 72EM2-M4-M2
Preset Multiple Registers (16)
Report Slave ID (17)
POWER INPUT
AC Power
■ Cache Commands
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
47 – 66 Hz)
Following commands are valid for Cache function.
Read Coil Status (01)
Read Input Status (02)
GENERAL SPECIFICATIONS
Construction: Plug-in
Read Holding Registers (03)
Read Input Registers (04)
Connection
(Up to 100 queries)
•Ethernet: RJ-45 modular jack
•RS-485: Euro type connector terminal
Uint sid connector: MSTB2,5/4-GF-5,08AU
Cable side connector: MSTB2,5/4-STF-5,08AU
ETHERNET COMMUNICATION
Standard: IEEE 802.3u
Transmission type: 10BASE-T, 100BASE-TX
Transmission speed: 10M or 100M bps
(Auto Negotiation)
(Applicable wire size: 0.2 - 2.5 mm
Recommended solderless terminal
AI0,25-6BU 0.25 mm (Phoenix Contact)
AI0,34-6TQ 0.34 mm (Phoenix Contact)
AI0,5-6WH 0.5 mm (Phoenix Contact)
AI0,75-6GY 0.75 mm (Phoenix Contact)
AI1-6RD 1.0 mm (Phoenix Contact)
AI1,5-6BK 1.5 mm (Phoenix Contact)
2, stripped length 7 mm)
2
Protocol: TCP/IP (compatible to Modbus/TCP Standard by
Schneider Automation)
2
2
Number of connections: 8
2
Transmission media:
2
10BASE-T (STP cable; Category 5)
100BASE-TX (STP cable; Category 5e)
Maximum segment length: 100 meters
2
•Power input: M3.5 screw terminal
Screw terminal: Chromated steel
72EM2-M4 SPECIFICATIONS
ES-6731 Rev.7 Page 1/4
http://www.m-system.co.jp/