GR8 Series Communication Adaptor

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Detail

GR8-EM Communication Adaptor GR8 Series

Ethernet/RS-485 Adaptor
(Modbus use)

Functions & Features
• Bidirectional protocol converter for Modbus/TCP (Ethernet) and Modbus RTU (RS-485)
• Fast response time thanks to the Cache function
• Available the type designed to connect to DL8 and R8 series modules

MODEL: GR8–EM–[1]-R

ORDERING INFORMATION
• Code number: GR8–EM-[1]-R
Specify a code from below for [1].
(e.g. GR8-EM-D-R)

[1] INSTALLATION
S: Single Use
D: Coupled with DL8
* The internal bus of DL8 is not connected although coupled with DL8.

POWER INPUT
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

GENERAL SPECIFICATIONS
Connection
•Power input: Euro type connector terminal
Applicable wire size: 0.2 - 2.5 mm2
Stripped length: 7 mm
•RS-485: Tension clamp (Front Twin connection)
Applicable wire size: 0.2 - 1.5 mm2
Stripped length: 10 mm
•Ethernet: RJ-45 connector
Housing material: Flame-resistant resin (black)
Isolation: Ethernet to RS-485 to power supply to FE1 
DIP SW Setting: Selection of IP Address and Maintenance/Normal mode
Configurator (IP Address and baud rate)
  Settings from Web browser (provided by user)
  Compatible terminal, browser
  Windows PC (Windows 7, 8.1, 10):
   Internet Explorer 11.0.47
   Firefox 62.0.3
   Chrome 69.0.3497.100
   Edge 44.17763.1.0
  Smart Phone, Tablet PC (iOS 11.4.1, Android 8.0.0)
   Safari 11.4.1
   Chrome 69.0.3497.100
Status indicator LED: RUN, ERR, RD, SD, LINK, LK100

■ Modbus RTU
•Supported Commands

Read Coil Status (01)
Read Input Status (02)
Read Holding Registers (03)
Read Input Registers (04)
Force Single Coil (05)
Preset Single Register (06)
Diagnostics (08)
Fetch Comm. Event Counter (11)
Fetch Comm. Event Log (12)
Force Multiple Coils (15)
Preset Multiple Registers (16)
Report Slave ID (17)
Cache Commands
Following commands are valid for Cache function.
Read Coil Status (01)
Read Input Status (02)
Read Holding Registers (03)
Read Input Registers (04)
(Up to 100 queries)

Ethernet, Modbus/TCP
Standard: IEEE 802.3u
Transmission type: 10BASE-T, 100BASE-TX
Transmission speed: 10 / 100M bps
(Auto Negotiation)
Protocol: TCP/IP
Number of connections: 8
Transmission media:
10BASE-T (STP cable; Category 5)
100BASE-TX (STP cable; Category 5e)
Maximum segment length: 100 meters
Communication configuration: with Web browser
  IP address: 192.168.0.1 (factory default setting)
  Subnet mask
  Default gateway
  Port No.: 502 (factory default setting)
  User name, password
  Modbus exception response
  Connection time out 

RS-485, Modbus-RTU
Protocol: Modbus RTU
Configuration: Bus type multi-drop
Standard: Conforms to TIA/EIA-485-A
Communication: Half-duplex, asynchronous, no procedure
Transmission media: Shielded twisted-pair cable (CPEV-S 0.9 dia.)
Communication configuration: with Web browser
  Baud rate: 2.4, 4.8, 9.6, 19.2, 38.4(*), 57.6, 115.2 kbps
  Parity bit: None, Odd(*), Even 
  Stop bit: 1(*), 2
  Read response timeout: 1000 msec.(*), 10 - 10 000 msec.
  Write response timeout: 1000 msec.(*), 10 - 10 000 msec.
  Cache function: Enabled(*), disabled 
  Inter-frame interval: 10 msec.(*), 0 - 500 msec.
  (*)Factory default setting
Terminating resistor: Built-in 110 Ω (DIP Switch, default: enabled)

INSTALLATION
Power consumption
DC: ≤ 1.5 W 24 V DC
Operating temperature: -10 to +55°C (14 to 131°F)
Operating humidity: 10 to 90 %RH (non-condensing)
Mounting: DIN rail
Weight: 120 g (0.26 lb)

PERFORMANCE
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute (Ethernet to RS-485 to power to FE1)

STANDARDS & APPROVALS
EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
RoHS Directive
  EN 50581

BASIC CONFIGURATIONS

EXTERNAL VIEW

COMMUNICATION CABLE CONNECTIONS

EXTERNAL DIMENSIONS unit: mm (inch)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

SYSTEM CONFIGURATION EXAMPLES
Devices other than the GR8-EM in below provided by the user.

M-System Vietnam
Email: Sales@m-system.com.vn

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