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Dimensions 

250 × 250 × 70 mm
(W× H × D, excluding protruding parts and cables)

Supply voltage 

24 VDC (−15% to +10%)  Class2

Power consumption 

10 W max.

Ambient operating temperature  −10 to 55°C (with no icing)

Ambient operating humidity  25% to 85% (with no condensation)

Ambient storage temperature  −25 to 70°C (with no icing)

Ambient storage humidity  25% to 85% (with no condensation)

Insulation resistance  20 M

Ω

 min. (at 500 VDCmega) between cable terminals and 

case

Dielectric strength 

1,000 VAC, 50/60 Hz for 1 min between cable terminals 
and case

Vibration resistance  No abnormality after application of 10 to 500 Hz, double 

amplitude: 1.5 mm, acceleration: 100 m/s

2

, 10 sweeps in 

each of 3 axis directions (up/down, left/right, and 
forward/backward) for 11 minutes each

Shock resistance 

No abnormality after application of 500 m/s

2

, 3 times each 

in 6 directions (Total: 18 times)

Degree of protection  IP54 (IEC 60529:2001)

Materials 

Plastic case: PBT
Metal case: Die-cast aluminum (ADC12)

Weight 

Approx. 3 kg

Mounting method 

Four M6 bolts

Host communications interface Ethernet 

10BASE-T/100BASE-TX

Host communications protocol EtherNet/IP

Accessories 

Instruction Sheet (1), IP address label (1), and Startup 
Guide (1)

Regulations 

FCC 15.247 (United States)
ISED RSS-247 (Canada)

PRECAUTIONS FOR SAFE USE

1. Ratings and Performances

3. Installation

4. Names and Functions of Operation Indicators

2. Dimensions

PRECAUTIONS ON SAFETY

PRECAUTIONS FOR CORRECT USE

UHF RFID System Reader/Writer

V780-HMD68-EIP-US

Model

© OMRON Corporation  2018  All Rights Reserved.   

Instruction Sheet 

V780-HMD68-EIP-US

• Rear Mounting 

*

1

• Front Mounting

• Reader/Writer Power Connector

• Connecting the Cable

• Disconnecting the Cable

• Reader/Writer Ethernet connector

• Recommended Ethernet Cable (100 m max.)

• Recommended Power Cable (60 m max.)

• 

Tag Communications Specifications

Item

V780-HMD68-EIP-US

United States and Canada

4 W e.i.r.p

15 to 27 dBm (Switchable in 1-dB increments.)

40 kbps (fixed)

• 80 kbps (High-speed Mode) 

*

1

• 31.25 kbps (Standard Mode) 

*

1

50 channels (902.75 to 927.25 MHz)
FHSS

Miller-modulated subcarrier

ISO/IEC 18000-63: 2013 
(EPCglobal Class-1 Generation-2)

RHCP

(Unit: mm)

(Unit: mm)

230±0.3

Four, M6 holes

230±0.3

Spring washer

Flat washer

M6 bolt

75±0.2 Four, 6.6-dia. holes

75±0.2

Spring washer

Flat washer

M6 bolt

V780-HMD68-EIP-US

V780-HMD68-EIP-US

NORM/ERR

NORM/ERR

NORM/ERR

NORM/ERR

LINK/ACT

RF

RUN

47.5

15

15

60

22 

10 

75 

75 

Four, M6 mounting holes, depth: 8

Seven operation indicators

Four, 6.6-dia. mounting holes

250

230

230
250

(49) 

70 

 (11.2) 

(1) 

(Unit: mm)

Power connector

Ethernet connector

Install the Reader/Writer with four M6 bolts. Use both spring washers 
and flat washers.
Recommended tightening torque: 4.3 N·m

WARNING

WARNING

Meaning of Signal Words

Alert Statements

Indicates a potentially hazardous situation which, if 
not avoided, will result in minor or moderate injury, 
or may result in serious injury or death. Additionally 
there may be significant property damage.

Observe the following precautions to ensure safety.
(1) Transportation

•  The Reader/Writer may be damaged it if falls from a high location. 

When you transport Reader/Writers, do not stack them too high.

•  Injury may occur if the Reader/Writer falls. Do not let the 

Reader/Writer fall when you carry it.

(2)  Installation and Removal

•  Use slip-resistant gloves when you install the Reader/Writer and 

hold the Reader/Writer securely at the depressions with both 
hands.

(3) Wiring

•  The Reader/Writer may be damaged. Wire it correctly.
•  The cables may break. Confirm cable specifications and do not 

bend cables past their normal bending radius.

•  The Reader/Writer may be damaged. Never use an AC power supply.
•  Connect the Ethernet cable to a host device (e.g., Switching 

Hub or PLC) that supports STP and ground the host device to a 
ground resistance of 100 

Ω

 or less.

(4) Usage

•  The communications range depends on the operating and 

installation environment. Use the Reader/Writer only after 
sufficiently testing operation onsite.

•  If multiple Reader/Writers are installed near each other, 

communications distances may decrease due to mutual 
interference. Refer to Reader/Writer Mutual Interference 
(Reference Data) in the appendices to the user’s manual 
 and 
check to make sure there is no mutual interference between 
Reader/Writers.

(5)  Errors and Failures

•  If an error is detected in the Reader/Writer, immediately stop 

operation and turn OFF the power supply. Consult with an 
OMRON representative.

(6) Maintenance

•  Using thinner, benzene, acetone, or kerosene may adversely 

affect the plastic parts and case coating. Refer to Chemical 
Resistance of the Reader/Writer in the appendices to the user’s 
manual 
and do not use chemicals that would have a negative 
effect.

(7) Disposal

•  Dispose of the Reader/Writer as industrial waste.

Always observe the following precautions to prevent operation failures, 
malfunctions, and adverse effects on the Reader/Writer.
(1) Transportation

•  Always use the packing box that comes with the Reader/Writer when 

you transport it, and do not subject it to excessive vibration or shock.

(2) Installation

•  After you tighten the bolts, make sure that the Reader/Writer is 

securely attached.

(3)  Installation and Storage Environment

Do not use or store the Reader/Writer in the following locations.

•  Locations subject to combustible gases, explosive gases, 

corrosive gases, dust, dirt, metal powder, salt, or oil

•  Locations where the specified ambient temperature or ambient 

humidity range is exceeded

•  Locations subject to extreme temperature changes that may 

result in condensation

•  Locations where the Reader/Writer would be directly subjected 

to vibration or shock exceeding specifications

•  Locations subject to water exposure that exceeds the specifications

(4) Storage Methods

•  Injury or damage may occur if the Reader/Writer falls. Implement 

safety measures so that the Reader/Writer will not fall.

(5) Wiring

•  To use the Reader/Writer in RUN mode, connect the control signal 

to the +24V of the power supply. If you connect the control signal to 
the 0-V side of the power supply, the Reader/Writer will start in 
Safe Mode.

•  The Reader/Writer may be destroyed. Do not exceed the rated 

voltage range.

(6) Usage

•  The Reader/Writer may fail if it is used with a damaged cable. Do not 

subject the cable to strong forces or place heavy objects on the cable.

•  Observe the tightening torque specifications for the power supply 

and communications connectors.

•  The Reader/Writer may fail if heat cannot be dissipated sufficiently. 

Ensure that heat can be dissipated around the Reader/Writer.

•  Do not use the Reader/Writer outdoors.
•  Do not attempt to disassemble, repair, or modify the Reader/Writer.

(7) Maintenance

•  Perform inspections both daily and periodically.
•  The Reader/Writer may fail if it or its wiring is replaced while the 

power supply is ON. Always turn OFF the power supply before 
you replace the Reader/Writer or its wiring.

The product must be professionally installed if it is installed in 
high location.

Injury may occur if the Reader/Writer falls and strikes a 
person. Observe the following precautions when installing the 
Reader/Writer.
•  Do not install if there are persons below the product.
•  Observe the recommended tightening torque for bolts.

*

1.  An M6 bolt engagement length of 6 to 8 mm is necessary for 

rear mounting.
The bolts may be hard to tighten. Tighten them to the 
recommended tightening torque.

Opening shape

Polarity

Size

M12

Receptacle

Male

Description

I/O

Name

Pin No.

1

2

3

4

24P

CONT

24N

-

-

IN

-
-

+24V

0V

-

Description

I/O

Name

Pin No.

1

2

3

4

Housing

TD+

TD−

RD+

RD−

FG

OUT

OUT

IN

IN

-

Ethernet send + signal

Ethernet send − signal

Ethernet receive − signal

Frame ground

Ethernet r signal

1

2

3

4

Opening shape

Polarity

Size

Appearance

Appearance

M12

Receptacle

Male

1

2

3

4

5. Connecting and Disconnecting the Reader/Writer Power Cable and Ethernet Cable

XS5W-T42

@

-

@

ME-K (made by OMRON)

XS5F-D42

@

-

@

80-F (made by OMRON)

• 

Recommended Power Supply (24 VDC)

Condition

Item

Supply voltage

Output current

Safety standard

24 VDC −15% to +10%

SELV (Safety Extra Low Voltage)

500 mA min.

*

1.  The default setting is for Automatic Mode. The Reader/Writer will 

automatically change to High-speed Mode or Standard Mode 
depending on the interference waves.

Reader/Writer Ethernet Connector

Ethernet Cable connector

Reader/
Writer Power Connector

Power Cable 
Connector

1.  Hold onto the connector on the Power 

Cable and insert it into the Reader/Writer 
power connector.

2.  Turn the connector on the Power Cable 

clockwise to lock it in place.

  Turn the cable connector clockwise until you 

hear it securely lock in place.

3.  Hold onto the connector on the Ethernet 

Cable and insert it into the Reader/Writer 
Ethernet connector.

4.  Turn the connector on the Ethernet Cable 

clockwise to lock it in place.

  Turn the cable connector clockwise until 

you hear it securely lock in place.

1.  Turn the connector on the Power Cable 

counterclockwise to unlock it.

2.  Hold onto the connector on the Power 

Cable and pull it straight out to remove it.

3.  Turn the connector on the Ethernet 

Cable counterclockwise to unlock it.

4.  Hold onto the connector on the Ethernet 

Cable and pull it straight out to remove it.

Item

V780-HMD68-EIP-US

• 

General Specifications

Mounting Hole Dimensions

The V780-HMD68-EIP-US can be used only in the United 
States and Canada.

This instruction sheet primarily provides precautions required in 
installing and operating the product.
Before installing or operating the product, read this instruction sheet 
thoroughly to acquire sufficient knowledge of the product.
For your convenience, keep this instruction sheet where it will be 
available when needed.
•  For detailed information, refer to the user’s manual .

Mounting Hole Dimensions

OMRON Corporation

Applicable countries

Maximum Radiated power

Output power

Transmission speed 
from Reader/Writer to RF Tag

Transmission speed 
from RF Tag to Reader/Writer

Used frequencies

Communications method with 
RF Tags

Tag communications protocol

Polarization characteristic

Control signal (operating mode signal)

*

  Run Mode: Connect to 24 V and then 

start the Reader/Writer.
Safe Mode: Connect to 0 V and then 
start the Reader/Writer.

Status

Description

Number and name Color

RUN

Green

Cyan

Cyan

RF

Yellow

LINK/ACT

Green

NORM/ERR

Green

Red

Flashing at 0.1-s intervals

Flashing at 0.4-s intervals

Lit

Flashing irregularly

Lit

Flashing at 0.4-s intervals

Flashing irregularly twice

Not lit

Lit

Not lit

Lit

Not lit

Lit for 0.2 s

Lit for 0.2 s

Not lit when the 
Reader/Writer is on standby.

Yellow

Lit for 0.2 s

Flashing at 0.1-s intervals

Lit

Not lit

Flashing once every 3 s

Yellow

Lit

* 3 6 0 4 5 6 3 - 3 A *

The indicator will flash quickly in 

the following cases.

During Reader/Writer initialization

While the Reader/Writer is in Run 

Mode and is waiting to establish 

tag data links as the originator

Flashes during operation in 

Safe Mode.

Lit during operation in Run 

Mode.

Lit during operation in Slave 

Mode.

Lit during test operation.

Not lit in the following cases.

• When power is not supplied

• When there is a watchdog 

timer (WDT) error

Lit when a radio wave is being 

output. (Lit during communications 

with RF Tag.)
Not lit when a radio wave is 
not being output.

Lit when a link has been 
established on the Ethernet port.

Flashes during data 

communications on the 

Ethernet port.
Not lit when a link has not 

been established on the 

Ethernet port.
Lights once when processing a 

communications command or 

another command from the host 

device is completed normally.
Lights once each time an 

unstable communication is 

detected while communications 

diagnosis is enabled.

Lights once when processing 
a communications command 
or another command from the 
host device ends in an error.
Lit when a major fault has 

occurred. (Lit when a fatal 

error has occurred.)
Flashes when a minor fault has 

occurred. (Flashes when a 

nonfatal error has occurred.)

The indicator will flash irregularly in 

the following cases.

When the same IP address is 

detected for two different devices 

on the network at startup

When an error occurs when 

getting an IP address from the 
BOOTP server at startup

Flashes during installation 
location notification.

Flashes during operation in 
the Focus Mode.

Flashing at 0.1-s intervals

Flashies quickly when a timeout 

is detected during tag data links. 

(A timeout occurs when tag data 

from the originator is not 

received within the time 

specified for the timeout value.)

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