MODEL: GR8-EM

GR8-EM SPECIFICATIONS

ES-8621 Rev.8 Page 1/7

https://www.m-system.co.jp/

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

27

(1.06)

mm (inch)

115

(4.53)

73

(2.87)

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

Stripped length: 7 mm

•RS-485: Tension clamp (Front Twin connection)

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)