KEYENCE BL-700 User Manual

User’s Manual

Laser Bar Code Reader

96M11884

BL-700 Series

Introduction

Symbols

This instruction manual describes the operation and function of the BL-700. Read
this manual carefully to ensure safe use and maximum performance from your BL-

700. The BL-700 series uses a semiconductor laser as light source. Before using
the product, see "Safety Precautions on Laser Product" on page 1 to learn the safe
and correct method of using the BL-700 series.

The following symbols alert you to important messages. Be sure to read these
messages carefully.

WARNING

CAUTION

Note:

Failure to follow instruction may lead to injury. (electric
shock, burn, etc.)

Failure to follow instructions may lead to product damage.

Provides additional information on proper operation.

Safety Information for BL-700 Series

General Precautions

• Do not use this product for the purpose to protect a human body or a part of
human body.

• This product is not intended for use as explosion-proof product. Do not use this
product in a hazardous location and/or potentially explosive atmosphere.

• At startup and during operation, be sure to monitor the functions and
performance of the BL-700.

• We recommend that you take substantial safety measures to avoid any damage
in the event a problem occurs.

• Do not open or modify the BL-700 or use it in any way other than described in
the specifications.

• When the BL-700 is used in combination with other instruments, functions and
performance may be degraded, depending on operating conditions and the
surrounding environment.

i

Warnings and Cautions Specific to the BL-700

• The BL-700 uses a 5 VDC power supply. Using a different voltage level

CAUTION

may damage the unit.
When using the KEYENCE power supply unit BL-U1, BL-U2, N-42 or N-48,
select the voltage level which can be supplied by the power supply unit. If
a nonconforming power supply is connected, the BL-700 may be dam­aged.

• The BL-700 is a precision instrument. If the unit is dropped or shocked, it
may be damaged. Take due consideration when transporting or installing
the unit.

Incorrect

• Do not hold the cables when carrying the units. The units may hit each
other and become damaged.

Incorrect

• Before installing the BL-700, read “2.4 Installation” of this manual carefully to
select a suitable installation site.

• You cannot perform any operation for 5 seconds after turning ON the BL-700.
During this time, the motor rotation stabilizes. Wait for a while after turning ON
the BL-700, then start reading or another operation.

• At shipment, the protective seals are affixed to the transmitter and receiver to
avoid fingerprints when mounting the unit. Be sure to remove the seals before
use.

• Do not allow water, oil or dust to adhere to the transmitter and receiver. Adhe­sion of these materials may cause a reading error. If the surface is contami­nated, gently wipe it with a soft cloth moistened with alcohol.

96M11884

ii

Package Contents List

The package contains the following components. Be sure to check the package
contents against the checklist before use.

■ BL-700 package

• BL-700 unit ................................................................................................ 1

• Mounting bracket ......................................................................................1

• Mounting screw ......................................................................................... 2

• Insulating spacer ....................................................................................... 4

• Washer ...................................................................................................... 4

• Laser warning label (Japanese/English/German) ............................... 1 set

■ BL-U1 package

• BL-U1 unit .................................................................................................1

■ BL-U2 package

• BL-U2 unit .................................................................................................1

• D-sub 9-pin connector, connector case .................................................... 1

• Instruction manual ..................................................................................... 1

■ N-42 package

• N-42 unit ...................................................................................................1

• Instruction manual ..................................................................................... 1

■ Setup software, user’s manual (BL-H1WE)

• Setup software (3.5-inch, 1.44 MB) ..........................................................1

• User’s manual (this manual) ..................................................................... 1

iii

BL Series Lineup

■ Laser bar code reader

Model Scanning method Readable bar width Reading distance

BL-700 Single 0.15 to 1.0 mm 160 to 370 mm

BL-701 Raster (When narrow width is 0.5 mm)

BL-740 Single 0.25 to 2.0 mm 150 to 750 mm

BL-741 Raster (When narrow width is 1.0 mm)

BL-780 Single 0.32 to 2.0 mm 200 to 1200 mm

BL-781 Raster (When narrow width is 2.0 mm)

■ Power supply

Model Supply voltage Interface

BL-U1 100 to 240 VAC RS-232C, RS-422A, RS-485 multi-drop

* Select one of these.

BL-U2 24 VDC RS-232C

N-42 24 VDC RS-422A

N-48 24 VDC RS-485 multi-drop

■ Other options

• N-400: Multi-drop controller

Used as the master unit when multi-drop linking with the BL series.

• BL-P2E: Handheld programmer specially designed for the BL series.

Used when changing the BL-series or N-400 settings.

• OP-22149 : D-sub 25-pin (male) — D-sub 25-pin (male) RS-232C cross cable

Connects the BL-U1 to the PC (use with OP-25057).

• OP-25057 : D-sub 25-pin — D-sub 9-pin conversion connector

Used in conjunction with OP-22149 when connecting the BL-U1 to
the DOS PC.

• OP-27937: D-sub 9-pin — D-sub 9-pin RS-232C cross cable

Connects the BL-U2 to the DOS PC.

iv

System Configuration

■ When using RS-232C or RS-422A

BL-700

LASER ON

STB

TEST

Timing sensor

OK/NG

TIMING

BL-700

Trigger input

BL-U1, BL-U2, N-42

Power supply unit

OK/NG
output

PLC etc. Handheld

programmer BL-P2E

Setup software
for BL series
(BL-H1WE)
Windows version

Serial
communication

RS-232C

RS-422A

Serial
communication

PLC (RS-232C/422A unit)

PLC link

IBM PC/AT
or compatible

PLC (Link unit)

* Use the BL setup software or the handheld programmer BL-P1E to set the BL

series.

Handheld programmer
BL-P2E

BL setup software

BL-700

LASER ON

STB

OK/NG

TIMING

TEST

BL-700

LASER ON

STB

OK/NG

TIMING

TEST

BL-700

LASER ON

STB

OK/NG

TIMING

TEST

BL-700

LASER ON

STB

OK/NG

TIMING

TEST

BL-700

Windows version

N-400 setup software
Windows version

PC

Multi-drop
controller N-400

Power supply unit
BL-U1, N-48

RS-485

RS-232C

■ When using the RS-485 multi-drop link

* Use the N-400 setup software or handheld programmer BL-P2E to set the multi-

drop controller N-400.

* For system configuration for the multi-drop link, see the “N-400 User’s Manual”.

Also, for connection and operation of the multi-drop link controller, see the “N­400 User’s Manual”. The BL-700 User’s Manual does not cover these subjects.

v

Parts and Functions

BL-700

No. Name Function

1 LASER ON LED Lit when laser beams are emitted.

2 STABILITY LED Displays the reading stability and the BL-700 operating status.

3 OK/NG LED • When OK output is ON: The green LED lights.

4 TIMING LED Lit when trigger input is ON.

5 TEST SWITCH This switch allows the following operations:

6 Transmitter/receiver Window to emit laser beams and receive reflected lights.

7 Cable Cable length is 1.8 m.

STB

TEST

LASER ON

OK/NG

TIMING

BL-700

6Transmitter/receiver

1LASER ON LED

2STABILITY LED

3OK/NG LED

4TIMING LED
5TEST switch

7 Cable

➮

See P. 64 to P. 65

• When NG output is ON: The red LED lights.

• Start the test mode.

• Pressing the switch once reads the bar code once.

• Sets the communication protocol to the initial values when
sending the settings.

• Reset the error status.

➮

See P.75

➮

See P.45

vi

BL-U1

1 OK/NG LED

2 TIMING LED

3 Communication status indicator

LEDs

4 POWER LED

5 I/O terminal block

6 Power switch

7 Power supply cable (2 m)

8 RS-232C port

9 READER port

0 DIP switches

No. Name Function

1 OK/NG LED • When OK output is ON: The green LED lights.

• When NG output is ON: The red LED lights.

2 TIMING LED Lit when trigger input is ON.

3 • Allows you to monitor the communication status of the

Communication status
indicator LEDs

RS-232C port.

• The SD, RD, RS and CS indicators are provided in this

order from the top.

4 POWER LED Lit when power is ON.

5 I/O terminal block Includes the trigger input terminal, OK/NG output terminals,

RS-422A terminal and RS-485 terminal.

6 Power switch Turns the power ON/OFF.

Power supply cable

7 Use a 100 to 240 VAC (50/60 Hz) power supply.

(2 m)

8 RS-232C port Connect a personal computer to this port. This port is

unused in multi-drop link mode.

9 READER port Connect the BL series to this port.

0 DIP switches Switches the communication port, and turns the terminator

ON/OFF.

Note: This product does not comply with EC directives.

vii

BL-U2

1 READER port

2 TRIGGER input

terminals

3 OK/NG output
terminals

POWER

BL-U2

4 Power supply
terminals

READER

SD

RD

RS-232C

7 RS-232C port

5 POWER LED

6 Communication

status indicator LEDs

No. Name Function

1 READER port Connects to a BL series bar code reader.

2 TRIGGER Connect to a sensor for input terminals

trigger input.

3 OK/NG output terminals Output OK/NG signals.

4 Power supply terminals Connect to a 24 VDC power supply.

5 POWER LED Turns on when the power is on.

6 Communication status Indicate the communication status of the RS-232C.

indicator LEDs

7 RS-232C port Connects to a personal computer, etc.

N-42

1 READER port

2 TRIGGER input

terminals

3 OK/NG output
terminals

4 Power supply terminals

READER

POWER SD RD

ON

OFF

7 POWER LED

6 Communication

status indicator
LEDs

5 Terminator switch

No. Name Function

1 READER port Connects to a BL series or RS-232C equipment.

2 TRIGGER input terminals Connect to a sensor for trigger input.

3 OK/NG output terminals Output OK/NG signals.

4 Power supply/ interface The 24 VDC power supply terminal and communi-

terminal block cation interface (RS-422A or RS-485) terminal are

provided.

5 Terminator switch Turns ON/OFF the terminator resistor: 100 ).

6 Communication status Indicates the RS-422A or RS-485 communication

status.

7 POWER LED Lights when the power is turned ON

viii

Using the Manual

Purpose Reference page

Turn on the trigger timing or wire the RS-232C cable. P.6 to 24

Mount the bar code reader. P.25 to 29

Perform the simple read test. P.40

Check the test mode reading rate or readout count on the P.81
PC screen.

Change the BL-700 settings using the setup software. P.51 –

Change the BL-700 settings through the handheld programmer See the BL-P2E
BL-P2E. User’s Manual.

Communicate with a PC. P.105 –

Control the BL-700 with the PLC link. P.121 –

Use the BL-700 with the multi-drop link. See the N-400

User’s Manual.

Notice

Troubleshooting P.136

PLC link communication setup. P.118

* This manual uses the expression “BL-700” for the BL-700/701/740/741/780/781

unless otherwise specified.

• No part of this instruction manual may be reprinted or reproduced without the
prior written permission of KEYENCE CORPORATION.

• KEYENCE assumes no responsibility for the contents of this manual. No liability
is assumed for damages resulting from a program created by customers.

• The contents of this manual are subject to change without notice.

• “MS”, “Windows” and “Windows95” are registered trademarks of Microsoft,
U.S.A.

• Other company names and product names are registered or nonregistered
trademarks of respective companies.

ix

Contents

Chapter 1 Safety Precautions on Laser Product

Chapter 2 Connection and Installation

1.1 Classification .......................................................................................... 2

1.2 Warning Labels ...................................................................................... 2

1.3 Label Location ........................................................................................ 3

1.4 Safety Consideration ............................................................................. 4

1.5 Safety Measures Provided with the BL-700 Series .............................4

2.1 BL-700 connections ...............................................................................6

2.1.1 Connector pin assignment ........................................................................6

2.1.2 Power supply connections ........................................................................6

2.1.3 Wiring I/O .................................................................................................. 7

2.1.4 RS-232C connection................................................................................. 7

2.2 Connecting BL-U1 and wiring ............................................................... 8

2.2.1 Connecting the power supply.................................................................... 8

2.2.2 Connecting the BL-700 .............................................................................8

2.2.3 Setting BL-U1 DIP switches...................................................................... 9

2.2.4 Terminals of I/O terminal block and wiring.............................................. 10

2.2.5 Connecting RS-232C .............................................................................. 11

2.2.6 Wiring the RS-422A ................................................................................14

2.3 Wiring the KEYENCE power supply unit BL-U2/N-42 .......................16

2.3.1 Connecting the power supply.................................................................. 16

2.3.2 Connecting the BL-700 to BL-U2/N-42 ...................................................16

2.3.3 Terminals of I/O terminal block and connections .................................... 17

2.3.4 Terminal .................................................................................................. 18

2.3.5 Connecting RS-232C (BL-U2) ................................................................ 18

2.3.6 Connecting the N-42 to RS-422A ........................................................... 21

2.4 Installation ............................................................................................ 23

2.4.1 Operating environment precautions........................................................ 23

2.4.2 Installing the BL-700 Series .................................................................... 25

2.4.3 Installing the BL-U1................................................................................. 27

2.4.4 Installing the BL-U2, N-42....................................................................... 27

x

Chapter 3 Functions for Reading Operation

3.1 Read Operation .................................................................................... 30

3.1.1 Scanning method .................................................................................... 30

3.1.2 Data-send mode ..................................................................................... 32

3.2 Read Modes ..........................................................................................33

3.2.1 Single label read mode ...........................................................................33

3.2.2 Multi-label read mode 1 (Multi 1) ............................................................ 33

3.2.3 Multi-label read mode 2 (Multi 2) ............................................................ 34

3.2.4 Multi-label read mode 3 (Multi 3) ............................................................ 35

3.3 Label Orientation Mode........................................................................... 37

3.4 Test Mode ............................................................................................. 38

3.4.1 Reading rate check mode ....................................................................... 38

3.4.2 Tact check mode..................................................................................... 39

3.4.3 Online test mode..................................................................................... 41

3.5 STABILITY LEDs .................................................................................. 42

3.6 Preset Function (Compare with:) .......................................................44

3.6.1 What is the preset function? ................................................................... 44

3.6.2 Wildcard Symbols (“!” and “?”) ...............................................................45

3.7 Additional Information ......................................................................... 46

3.8 Max. Code Length (Designated Digit ) Output Function .................. 48

Chapter 4 Setup Software

4.1 Installing the Setup Software .............................................................. 50

4.1.1 Installing setup software ......................................................................... 50

4.1.2 Installation procedure.............................................................................. 50

4. 2 Setup Software Operating Procedure ................................................ 52

4.2.1 Operating procedure ............................................................................... 52

4.2.2 Description on each setup screen........................................................... 53

4.2.3 Outline of operation................................................................................. 54

4.3 Details of Setup ....................................................................................56

4.3.1 Setup procedure ..................................................................................... 56

4.3.2 Reading/Saving/Printing File................................................................... 69

4.4 Sending/Receiving Settings ................................................................ 73

4.5 Using Monitor .......................................................................................77

4.6 List of Error Messages ........................................................................ 80

4.7 Example of Printing from the Setup Software ................................... 81

xi

Chapter 5 Serial Communication

5.1 Serial Communication ......................................................................... 84

5.2 Details on Data Communication .........................................................85

5.3 Command Communication ................................................................. 88

5.3.1 Setup of Direct Control Commands ........................................................88

5.3.2 Details on Parameter Setting Commands............................................... 92

Chapter 6 PLC Link

6.1 PLC Link .............................................................................................104

6.1.1 List of PLCs used for PLC link ..............................................................104

6.1.2 Devices used for PLC link..................................................................... 105

6.2 Setting the BL-700 and PLC ..............................................................106

6.2.1 Setting the BL-700 series...................................................................... 106

6.2.2 Setting the PLC..................................................................................... 106

6.3 Device Assignment ............................................................................ 109

6.4 PLC Link Error .................................................................................... 116

6.5 Communication Time ........................................................................117

Appendices

Appendix A Specifications .......................................................................120

Appendix A.1 Specifications .......................................................................... 120

Appendix A.2 Reading range characteristics (Typical) .................................. 122

Appendix A.3 Angular characteristics (Typical) ............................................. 125

Appendix B. BL-U1 Specifications ............................................................ 126

Appendix C. BL-U2, N-42 Specifications .................................................. 127

Appendix D. Dimensions ........................................................................... 128

Appendix E. Example Program for Serial Communication .................... 131

Appendix F. Sample Program for the PLC Link ...................................... 132

Appendix G. Troubleshooting ................................................................... 135

Appendix H. CODE93 Specifications ........................................................ 137

Appendix I. CODE128 Specifications ...................................................... 138

Appendix J. Checksum Calculation Method ........................................... 139

Appendix K. ASCII Code Table .................................................................. 141

Appendix L. Setup Parameter List ............................................................ 142

Appendix M. Default Setting List ............................................................... 145

Chapter 7 Warranty

Warranty ..................................................................................................147

xii

xiii

Chapter 1

Safety Precautions on Laser Product

1.1 Classification ........................................................................ 2

1.2 Warning Labels ..................................................................... 2

1.3 Label Location ...................................................................... 3

1.4 Safety Consideration ............................................................ 4

1.5 Safety Measures Provided with the BL-700 Series ............ 4

Chapter 1 Safety Precautions on Laser Product

1.1 Classification

Model BL-700/701 BL-740/741 BL-780/781

FDA(CDRH) Part 1040.10 Class II Laser Product

EN60825-1 Class 2 Laser Product

1

1.2 Warning Labels

■ FDA(CDRH)

■ IEC

Japanese English

French German

Chinese (Traditional)

2

1.3 Labels Location

CAUTION LASER RADIATION

WHEN OP

EN.

DO NOT
STARE INTO BEAM.

LASER RADIATION-

DO NOT STARE INTO BEAM

SEMICONDUCTOR LASER 650nm

MAXIMUM OUTPUT 1.4mW

PULSED RADIATION 91

µm

CLASS II LASER PRODUCT

CAUTION

AVOID EXPOSURE

LASER RADIATION

IS EMITTED FROM

THIS APERTURE.

CAUTION

Laser radiation when
open. D

o not stare

into beam

.

A FDA(CDRH) warning label is affixed to the product.
When using this product in the countries and/or regions other than U.S., use the
IEC warning/explanatory label in the package of this product. In this case, it can be
affixed on the FDA (CDRH) warning label, which has already been affixed to this
product.

■ FDA(CDRH)

Chapter 1 Safety Precautions on Laser Product

1

■ IEC

STB

STB

TEST

LASER ON

TEST

LASER ON

OK/NG

TIMING

OK/NG

TIMING

AVOID EXPOSURE

LASER RADIATION

BL-700

BL-700

CAUTION

LASER RADIATION-

DO NOT STARE INTO BEAM

IS EMITTED FROM

THIS APERTURE.

CTOR LASER 650nm

UTPUT 1.4mW

SEMICONDU

MAXIMUM O

PULSED RADIATION 91

CLASS II LASER PRODUCT

µm

3

Chapter 1 Safety Precautions on Laser Product

1.4 Safety Consideration

WARNING

1

Use of controls or adjustment or the performance of procedures other than those
specified herein may result in hazardous radiation exposure.

Precautions on Class II/2 Laser Product

• Do not stare into the beam.

• Do not direct the beam at people or into areas where people might be present.

• Be careful of the path of the laser beam. If there is a possibility that the operator
may be exposed to the specular or diffuse reflections, block the beam by
installing a protective enclosure.

• Install the products so that the path of the laser beam is not as the same height
as that of human eye.

• Do not disassemble this product. Laser emission from this product is not auto­matically stopped when it is disassembled.

1.5 Safety Measures Provided with the BL-700 Series

The BL-700 Series is provided with the following safety measures. Make sure
these measures function correctly before operating.

• Laser emission caution LED (LASER ON LED)

During laser emission, the LASER ON LED illuminates. The LED ON status can be

checked through the laser protective glasses.

• Laser forced OFF command

Sending the laser forced OFF command (LOCK, see P.92) to the BL-700 can
inhibit emission of laser beams. When working near the laser transmitter, be sure
to use the laser forced OFF command to avoid looking into the laser beams.

When this command is selected, the bottom STABILITY LED flashes.

4

Chapter 2

Connection and Installation

2.1 BL-700 connections .............................................................. 6

2.1.1 Connector pin assignment .......................................................6

2.1.2 Power supply connections .......................................................6

2.1.3 Wiring I/O ................................................................................. 7

2.1.4 RS-232C connection ................................................................ 7

2.2 Connecting BL-U1 and wiring ............................................. 8

2.2.1 Connecting the power supply .................................................. 8

2.2.2 Connecting the BL-700 ............................................................8

2.2.3 Setting BL-U1 DIP switches..................................................... 9

2.2.4 Terminals of I/O terminal block and wiring............................. 10

2.2.5 Connecting RS-232C ............................................................. 11

2.2.6 Wiring the RS-422A ...............................................................14

2.3 Wiring the KEYENCE power supply unit BL-U2/N-42 ...... 16

2.3.1 Connecting the power supply ................................................ 16

2.3.2 Connecting the BL-700 to BL-U2/N-42 ..................................16

2.3.3 Terminals of I/O terminal block and connections ................... 17

2.3.4 Terminal ................................................................................. 18

2.3.5 Connecting RS-232C (BL-U2) ............................................... 18

2.3.6 Connecting the N-42 to RS-422A .......................................... 21

2.4 Installation ........................................................................... 23

2.4.1 Operating environment precautions....................................... 23

2.4.2 Installing the BL-700 Series ................................................... 25

2.4.3 Installing the BL-U1 ............................................................... 27

2.4.4 Installing the BL-U2, N-42...................................................... 27

Chapter 2 Connection and Installation

2.1 BL-700 Connections

This section describes connections when a KEYENCE power supply unit is not
used.

2.1.1 Connector pin assignment

The BL-700 connector has the following pin assignment.

2

Pin No. Cable color Symbol Description Signal direction

Connector Shield FG Frame ground —

12 3 45

D-sub 9-pin (female)
DTE specification (defined as terminal)
#4-40 screw (male)

6789

case

1 Yellow TIM Trigger input Input

2 Brown RD (RXD) Receives RS-232C data Input

3 Purple SD (TXD) Sends RS-232C data Output

4 White OK OK output Output

5 Black GND (SG) Ground (common ground for —

respective signals)

6 Gray NG NG output Output

7 Pink RS (RTS) Request to send RS-232C data Output

(always ON)

8 Blue CS (CTS) Enable to send data through Input

RS-232C

9 Red +5 V +5 V DC power supply Input

2.1.2 Power supply connections

BL-700

+5V

GND

• Be sure to match the polarities of the power supply when soldering the

CAUTION

connections. Reversing the polarities will damage the unit.

• Make sure that the power supply provides a stable 5 VDC ± 5%. If the
power supply does not function in the above range, it can damage the unit.

• Do not extend the power cable. A long power cable can cause a voltage
drop, preventing the BL-700 from starting properly.

Note: • Use the power supply that provides Class 2 output defined in NFPA 70

(NEC: National Electrical Code) when using this product as an UL certified
product.

• Use the Limited Power Source defined in UL/IEC60950-1 to comply with UL/
IEC60950-1.

9

5

+

5 VDC

6

2.1.3 Wiring I/O

Chapter 2 Connection and Installation

■ Trigger input

The trigger input is used to signal the BL-700 to start reading (start laser emission).
The trigger input is a non-voltage input (TTL input is also available with negative
logic).

BL-700

4.7

10 kΩ

Internal circuit

5 VDC

kΩ

TIM

GND

1

5

Contact or
solid-state

■ OK/NG output

This output signals whether the readout data is the same as the preset data. When
no preset data has been entered, the signal indicates bar code read status. It is an
NPN open-collector output.

➮

See P. 44

BL-700

2

2.1.4 RS-232C connection

Wire the RS-232C as indicated below when connecting the BL-700 to a PC.

■ Connecting the computer with 25-pin

D-sub 9-pin (male)

# 4-40 screw

Internal circuit

BL-700

2

SD

3

CS

8

RS

7

GND

5

+5V

9

10 kΩ

OK/NG

4/6

5

GND

* Rated load: 24 VDC
(30 mA) max.

PC

2
3
4
5
7
6

20

D-sub 25-pin (male)

M2.6 screw

Load

+

SDRD
RD
RS
CS
SG
DR
ER

7

Chapter 2 Connection and Installation

2.2 Connecting BL-U1 and Wiring

Note: This product does not comply with EC directives.

To use the BL-U1 AC power supply, connect it as described below.

2.2.1 Connecting the power supply

Plug the BL-U1 power cable into an outlet.

2

CAUTION

Use a power supply with 100 to 240 VAC ± 10% (50/60 Hz).

FG line

2.2.2 Connecting the BL-700

Connect the BL-700 to the READER port of the BL-U1.
The BL-U1 READER port pin assignment is as described below.

■ BL-U1 READER port pin assignment

12 3 45

Pin No. Symbol Function Signal direction

1 TIM Trigger input Output

2 RD (RXD) Receives RS-232C data. Output

3 SD (TXD) Sends RS-232C data. Input

4OKOK Input

5 GND (SG) Ground (Common ground for respective —

6NGNG Input

7 RS (RTS) Ready to send RS-232C data. Input

8 CS (CTS) Request to send RS-232C data. Output

9 +5 V +5 V power supply Output

6789

D-sub 9-pin (male)
DCE specification (defined as terminal)
#4-40 screw (female)

signal)

(Control method can be selected with the DIP
switches.)

➮

See p. 9.

8

Note: Do not extend a power cable. A long power cable can cause a voltage drop,
preventing the BL-700 from starting properly.

Note: This product does not comply with EC directives.

2.2.3 Setting BL-U1 DIP switches

Change the DIP switch settings depending on the selected interface and trigger
input method.

OFF

ON

123456

Chapter 2 Connection and Installation

* The figure on the left shows the

default settings.

DIP Switch No. 1 2 3 4 5 6

Interface selection RS-232C ON OFF OFF

RS-422A OFF ON OFF

RS-485 multidrop OFF OFF ON

RS-422A terminator OFF OFF

(Termination resistance: 100 ) ON ON

RS-485 terminator OFF OFF

(Termination resistance: 100 ) ON ON

Selection of READER port ON or OFF according
CS control method to the RS-232C port OFF

CS signal status.

Normally ON ON

2

9

Chapter 2 Connection and Installation

2.2.4 Terminals of I/O terminal block and wiring

TIM +12V OUT– COM OK NG SDA SDB SG RDA RDB

2

Trigger

input

Symbol Description Signal direction

TIM Trigger input Input

+12 V OUT- + terminal of power supply for sensor (12 VDC, 300 mA) Output

COM Common terminal for OK/NG output —

OK OK output Output

NG NG output Output

SDA + terminal for RS-422A data transmission/ Output,

SDB – terminal for RS-422A data transmission/ Output,

SG Signal ground —

RDA + terminal for RS-422A data reception Input

RDB – terminal for RS-422A data reception Input

Power supply

for sensors

(12 VDC, 300 mA)

– terminal of power supply for sensor (0 V) Output

RS-485 + terminal Input/Output

RS-485 - terminal Input/Output

OK/NG output RS-422A/RS-485

Input

* Viewed from the left of the terminal block

• M3.0 screws are used for the terminal block.

• Use the following crimp terminals for connections.

6.0 mm or
less

Round-shape

6.0 mm or
less

Fork-shape

■ Connecting trigger input

The trigger input allows the BL-700 series to start reading bar codes (turn on the
laser beam).
The trigger input is turned ON when 8.5 to 30 VDC input is activated between the
trigger input terminals.
The BL-U1 power supply for the sensor can be used as the input power supply.

TIM +12V OUT–

+

+

8.5 to 30 VDC

Contact or
solid-state

10

Chapter 2 Connection and Installation

■ Connecting OK/NG output

The OK/NG output is used to differentiate between acceptable and unacceptable
results based on the comparison with the preset data, and to indicate whether or
not the BL-700 series successfully read bar codes.

➮

See P.44.

The OK/NG output is an open-collector output.

COM OK NG

*Rated load: 30 V max. (100 mA)

Load

Load

+

■ I/O circuit diagram

• Input circuit diagram • Output circuit diagram

2

2.2.5 Connecting RS-232C

Pin assignment

Pin No. Symbol Function Signal direction

1FG Frame ground —

2 SD (TXD) Sends RS-232C data Output

3 RD (RXD) Receives RS-232C data Input

4 RS (RTS) Ready to send RS-232C data Output

5 CS (CTS) Request to send RS-232C data Input

6 DR (DSR) Connected to pin No. 20 inside. Input

7 GND (SG) Signal ground —

20 ER (DTR) Connected to pin No. 6 inside. Output

3.3 kΩ

2.4

TIM

kΩ

13 1

25 14

(always ON)

Internal circuit

OK/NG

Internal circuit

COM

D-sub 25-pin (female)
DCE specification (defined as terminal)
M2.6 screw (female)

Load

+

11

Chapter 2 Connection and Installation

OP-96369

BL-U1*

OP-96368 (2.5 m)

KV-10, 16, 24
KV-40, 80

KV-300*

Wiring the RS-232C cable

2

■ Connecting a PC

25-pin serial port 9-pin serial port

PC

2

SD

3

RD

4

RS

CS

5

DR

6

ER

20

SG

7

D-sub 25-pin (male)
M2.6 screw

BL-U1

FGFG

11

2

SD

3

RD

4

RS

CS

5

DR

6

ER

20

SG

7

D-sub 25-pin (male)
M2.6 screw

Connector case

PC

RD

SD

ER

SG

DR

RS
CS

CD

D-sub 9-pin (female)
#4-40 screw

BL-U1

1

FG

2

3

4

5

6

7

8

D-sub 25-pin (male)
M2.6 screw

SD

2

RD

3

4

RS

5

CS

6

DR

7

SG

8

ER

201

* KEYENCE option OP-22149 (1.5 m)

or commercially available cross cable
can be used.

* KEYENCE option OP-22149 (1.5 m)

and OP-25057 (conversion connec­tor) can be used.

■ Connecting KV series/Handheld programmer port

Use the optional cable manufactured by KEYENCE.

Note: KV-300 and BL-U1 are not available in Europe.

■ Connecting KV-L2*

Port 1 Port 2

SD

RD

RS

CS

DR

ER

SG

KV-L2

2

3

4

5

6

20

7

BL-U1*

11

2

3

4

5

6

20

7

FGFG

SD

RD

RS

CS

DR

ER

SG

SD

RD

SG

KZ-L2

3

5

BL-U1*

1

2

3

4

5

6

20

71

FG

SD

RD

RS

CS

DR

ER

SG

12

D-sub 25-pin (male)
M2.6 screw

D-sub 25-pin (male)
M2.6 screw

* KEYENCE option OP-22149 (1.5 m) or

commercially available cross cable can be
used.

Terminal block

D-sub 25-pin (male)
M2.6 screw

■ Connecting MELSEC-A series

Connection with AJ71C24,

AL71C24-S■■,
A0J2-C214-S1,
AJ71UC24

Chapter 2 Connection and Installation

Connection with A1SJ71(U)C24-R2/PRF,

A2CCPUC24,
A2CCPUC24-PRF

Link unit

2

SD

3

RD

4

RS

CS

5

DR

6

SG

7

CD

ER

20

D-sub 25-pin (male)
M2.6 screw

BL-U1*

FGFG

11

2

SD

3

RD

4

RS

CS

5

DR

6

SG

7

88

ER

20

D-sub 25-pin (male)
M2.6 screw

■ SYSMAC-C series

Connection with C-200H-LK201(-V1),

C-500-LK203,
C-500-LK201-V1,
C120-LK201-V1

Link unit

SD

RD

RS

CS

SG

2

3

4

5

7

BL-U1*

11

2

3

4

5

7

FGFG

SD

RD

RS

CS

SG

Link unit

2

RD

3

SD

4

ER

SG

5

DR

6

RS

7

CS

CD

1

D-sub 9-pin (male)
M2.6 screw

D-sub 25-pin (male)
M2.6 screw

Connection with C-20H,

C-28H,
C-40H,
C-60H

PLC

2

SD

3

RD

4

RS

CS

5

SG

7

BL-U1*

1–

2

3

4

5

6

7

88

20

BL-U1*

11

2

3

4

5

7

FGConnector case

SD

RD

RS

CS

DR

SG

ER

FGFG

SD

RD

RS

CS

SG

2

D-sub 25-pin (male)
M2.6 screw

D-sub 25-pin (male)
M2.6 screw

D-sub 9-pin (male)
M2.6 screw

* KEYENCE option OP-22149 (1.5 m) or

commercially available cross cable can be
used.

Note: KV-L2 and BL-U1 are not available in Europe.

Connection with C-200HS(CPU21/23/31/33),

CQM1(CPU21/41/42/43/44),
C-200HE(CPU42),
C200HG(CPU43/63),
C200HX(CPU44/64),
C200HW-COM02/COM04/COM05/COM06

PLC

2

SD

3

RD

4

RS

CS

5

SG

9

D-sub 9-pin (male)
M2.6 screw

BL-U1*

FGFG

11

2

SD

3

RD

4

RS

CS

5

SG

7

D-sub 25-pin (male)
M2.6 screw

D-sub 25-pin (male)
M2.6 screw

13

Chapter 2 Connection and Installation

2

■ SYSMAC-CV series

Connection with CV500-LK201
(Port 1)

Link unit

2

SD

3

RD

4

RS

CS

5

SG

7

D-sub 25-pin (male)
M2.6 screw

* KEYENCE option OP-22149 (1.5 m) or

commercially available cross cable can be
used.

BL-U1*

FGFG

11

2

SD

3

RD

4

RS

CS

5

SG

7

D-sub 25-pin (male)
M2.6 screw

Note: BL-U1 is not available in Europe.

Connection with CV500-LK201 (Port 2),

CV500,
CV1000,
CVM1

PLC

2

SD

3

RD

4

RS

CS

5

SG

9

D-sub 9-pin (male)
M2.6 screw

BL-U1*

FGFG

11

2

SD

3

RD

4

RS

CS

5

SG

7

D-sub 25-pin (male)
M2.6 screw

2.2.6 Wiring the RS-422A

Wire the RS-422A as indicated below.

■ Connecting a general RS-422A unit

Use the same wiring when connecting the BL-U1 to the BL-U1*.

• Turn ON the terminators (BL-U1/external unit terminal resistance: 100 ).

➮

• The cable can be extended to within 1.2 km.

■ Connecting KV-L2*

Connecting the unit to RS-422A port 2

See P.35

External unit

.

BL-U1*

SG

RD + (RDA)

RD – (RDB)

SD + (SDA)

SD – (SDB)

Link Unit

SG

RDB

RDA

SDB

SDA

Twisted pair cable

Twisted pair cable

BL-U1*

SG

SDA

SDB

RDA

RDB

BL-U1*

SG

SDA

SDB

RDA

RDB

14

■ Connecting the MELSEC-A series

SDA

SG

BL-U1*

SDB

RDA

RDB

8RDB

RDA

SDB

SDA

6

2

1

9

SG

D-sub 9-pin (male)
M2.6 screw

Twisted pair cable

Communication

board

Connecting with AJ71C24,

AJ71C24-S■■,
AJ71UC24,
A0J2-C214-S1,
A1SJ71(U)C24-R4

Chapter 2 Connection and Installation

Link unit

SG

RDA

RDB

SDA

SDB

Twisted pair cable

BL-U1*

SG

SDA

SDB

RDA

RDB

Note: BL-U1 and KV-L2 are not available in Europe.

■ Connecting SYSMAC-C series

Connecting with C200H-LK202 (-V1), Connecting with C200HW-COM03/

C500-LK201-V1, COM06
C500-LK203,
C120-LK202-V1

Link unit

SG

3

1RDB

6

RDA

5

SDB

SDA

9

FG

7

D-sub 9-pin (male)
M2.6 screw

Twisted pair cable

BL-U1*

SG

SDA

SDB

RDA

RDB

2

■ Connecting SYSMAC-CV series

Connecting with CV-500-LK201,

CV500,
CV1000,
CVM1

PLC

SG

9

8RDB

6

RDA

2

SDB

SDA

1

RS

4

CS

5

D-sub 9-pin (male)
M2.6 screw

Twisted pair cable

BL-U1*

SG

SDA

SDB

RDA

RDB

Note: BL-U1 is not available in Europe.

15

Chapter 2 Connection and Installation

2.3 Wiring the KEYENCE Power Supply Unit BL-U2/N-42

To use the BL-U2/N-42, connect as indicated below.

2.3.1 Connecting the power supply

Connect BL-U2/N-42 to a 24 VDC power supply.

BL-U2 N-42

24V DC IN

2

CAUTION

+–

24 VDC

+

Make sure that the power supply provides 24 VDC. If the power supply output
is not 24 VDC, it can damage the unit.

Note: If the power supply is UL rated, it must provide Class 2 output.

2.3.2 Connecting the BL-700 to BL-U2/N-42

Connect the BL-700 to the READER port of the BL-U2/N-42.

READER

POWER SD RD

N.C. N.C. N.C.

24V DC IN

+–

24 VDC

+

16

■ READER port pin assignment

12 3 45

6789

Pin No. Symbol Function Signal direction

1 TIM Trigger input Output

2 RD (RXD) Receives RS-232C data Output

3 SD (TXD) Sends RS-232C data Input

4OK OK signal Input

5 GND (SG) Ground (Common ground for respective signal) —

6NG NG signal Input

7 RS (RTS) Ready to send RS-232C data Input

8 CS (CTS) Request to send RS-232C data Output

9 +5 V 5 V power supply output Output

D-sub 9-pin (male)
DCE specification (defined as terminal)
#4-40 screw (female)

Note: Do not extend a power cable. A long power cable can cause a voltage drop,
preventing the BL-700 from starting properly.