M-system GR8-EM Instruction Manual

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-8621 Rev.5 P. 1 / 15

INSTRUCTION MANUAL

ETHERNET/RS-485 ADAPTOR

(Modbus use)

MODEL

GR8-EM

BEFORE USE ....

Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.

■ PACKAGE INCLUDES:

Ethernet/RS-485 adaptor ....................................................(1)

■ MODEL NO.

Confirm Model No. marking on the product to be exactly
what you ordered.

■ INSTRUCTION MANUAL

This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.

POINTS OF CAUTION

■ CONFORMITY WITH EU DIRECTIVES

• The equipment must be mounted inside a panel.

• The actual installation environments such as panel con­figurations, connected devices, connected wires, may af­fect the protection level of this unit when it is integrated
in a panel system. The user may have to review the CE
requirements in regard to the whole system and employ
additional protective measures to ensure the CE conform­ity.

■ POWER INPUT RATING & OPERATIONAL RANGE

• Locate the power input rating marked on the product and
confirm its operational range as indicated below:

24V DC rating: 24V ±10%, ≤ 1.5W

■ GENERAL PRECAUTIONS

• Before you remove the unit or mount it, turn off the power
supply for safety.

■ ENVIRONMENT

• Indoor use.

• When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.

• Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.

• Environmental temperature must be within -10 to +55°C
(14 to 131°F) with relative humidity within 10 to90% RH
in order to ensure adequate life span and operation.

■ WIRING

• Do not install cables close to noise sources (relay drive
cable, high frequency line, etc.).

• Do not bind these cables together with those in which
noises are present. Do not install them in the same duct.

■ AND ....

• The unit is designed to function as soon as power is sup­plied, however, a warm up for 10 minutes is required for
satisfying complete performance described in the data
sheet.

GR8-EM

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-8621 Rev.5 P. 2 / 15

COMPONENT IDENTIFICATION

Connector for
Power Supply

Terminating Resistor
Setting SW

Status Indicator LED

Function Setting DIP SW

1

SW1

2
3
4
5
6
7
8

ON

RJ-45 Connector for
Ethernet

Connector for
RS-485 Communication

■ FRONT VIEW ■ RIGHT SIDE VIEW

■ STATUS INDICATOR LED

ID Color Light Module Status

RUN Green

Blinking (1-sec cycle) Normal mode
Blinking in low speed (2-sec cycle) Maintenance mode (with SW1-2 ON)
Blinking in high speed

(0.4-sec cycle)

Error (device error when the unit wouldn’t recover even after power
reactivation)

OFF Power is off or device error
ERR Red ON Data error from RS-485 device
RD Green ON Receiving data from the paired RS-485 station

SD Green ON Sending data to the paired RS-485 station

LINK Green

ON Being linked with 10BASE or 100BASE

Blinking Sending/receiving data

OFF No link detected

LK100 Green

ON Being linked with 100BASE

OFF Being linked with 10BASE or Not linked

■ DIP SW SETTING

(*) Factory default setting

• IP Address

SW1-1 Mode Function

OFF (*) Normal mode Set with configurator

ON

Factory default
mode

When starting up with the SW ON, the unit temporarily operates by the factory default settings
of network configuration, user ID and password.
The stored settings, however, are maintained and the unit returns to the original settings upon
restarting at normal mode. When network settings are changed during factory default mode,
the changed settings are stored.

• Maintenance mode

SW1-2 Mode Function

OFF (*) Normal mode Normal operation
ON Maintenance mode Stop output (Modbus function 05, 06, 15, 16 are disabled)

Note: Be sure to set unused SW1-3 through 1-8 to OFF.

■ TERMINATING RESISTOR SETTING SW

• Terminating resistor

TERM INCORPORATED TERMINATING RESISTOR

OFF Disabled
ON (*) Enabled

GR8-EM

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-8621 Rev.5 P. 3 / 15

■ RS-485 CONNECTOR TERMINAL ASSIGNMENT

Unit side connector: MC1,5/5-GF-3,5
(Phoenex Contact)
Cable side connector: TFMC1,5/5-STF-3,5
(Phoenex Contact)

No. ID FUNCTION

5 FE FE
4 SH SHIELD
3 DG DG
2 DB DB
1 DA DA

5
4
3
2
1

1

2

3

■ POWER SUPPLY TERMINAL ASSIGNMENT

Unit side connector: MSTB2,5/3-G
(Phoenex Contact)
Cable side connector: MSTB2,5/3-ST
(Phoenex Contact)

No. ID FUNCTION

1 (+) Power supply 24V (+)
2 (–) Power supply 24V (–)
3 FE1 Power supply earth

WIRING INSTRUCTIONS

■ EURO TYPE CONNECTOR TERMINAL (POWER SUPPLY)

Applicable connector: MSTB2,5/3-ST (Phoenix Contact)
attached to the product
Applicable wire size: 0.2 – 2.5 mm

2

Stripped length: 7 mm
Recommended pin terminals :

AI0,25-6BU 0.25 mm

2

(Phoenix Contact)

AI0,34-6TQ 0.34 mm

2

(Phoenix Contact)

AI0,5-6WH 0.5 mm

2

(Phoenix Contact)

AI0,75-6GY 0.75 mm

2

(Phoenix Contact)

AI1-6RD 1.0 mm

2

(Phoenix Contact)

AI1,5-6BK 1.5 mm

2

(Phoenix Contact)

AI2,5-6BU 2.5 mm

2

(Phoenix Contact)

■ TENSION CLAMP TERMINAL BLOCK (RS-485)

Applicable connector: TFMC1,5/5-STF-3,5 (Phoenix Contact)
attached to the product
Applicable wire size: 0.2 – 1.5 mm

2

Stripped length: 10 mm
Recommended pin terminals:

AI0,25-10YE 0.25 mm

2

(Phoenix Contact)

AI0,34-10TQ 0.34 mm

2

(Phoenix Contact)

AI0,5-10WH 0.5 mm

2

(Phoenix Contact)

AI0,75-10GY 0.75 mm

2

(Phoenix Contact)

GR8-EM

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-8621 Rev.5 P. 4 / 15

INSTALLATION

■ COUPLED WITH DL8

The unit coupled with DL8 is used by connecting to DL8 and R8 series I/O modules. First, mount all the DL8 and I/O modules
with the power OFF. Connect the unit in the same manner to DL8 and I/O modules. Attach the protective cover of DL8 to
GR8-EM.

Note: Make sure to install the unit at the end of all the other modules. With the unit installed between DL8 and I/O modules, I/O

modules after the unit can not perform internal communication or the power can not be supplied to these I/O modules.

Confirm that the locking clamps of the unit are set. Insert the unit straight in perpendicularly to the rail such that the
grooves of the unit and the module on the immediate left engage each other. (A & B in the below figure)

A

B

• HOW TO INSTALL

Conrm that the locking clamps of the unit are set. Insert the unit straight in perpendicularly to the rail such that the grooves of the
unit and the module on the immediate left engage each other. (A & B in the below gure)

• HOW TO ATTACH PROTECTIVE COVER

Align the hooks on the cover with the grooves of the unit and slide the cover straight until the hooks are latched.

groove

hook

When removing the cover by DIP SW setting, pull it out while squeezing the hooks inward.

GR8-EM

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]

EM-8621 Rev.5 P. 5 / 15

■ SINGLE USE

• HOW TO INSTALL

A) Hang the upper hook at the rear side of unit on the DIN rail. Push in the lower in keeping pressing the unit to the DIN rail.
B) To remove the unit, push down the DIN rail adaptor using a minus screwdriver. Pull out the lower part of the unit.

Remove the upper part from the DIN rail.

Note: When the unit is mounted on a DIN rail attached on the wall surface in vertical direction, use of an attachment
plate to prevent the module from sliding down is recommended.