KEYENCE BL-700 User Manual

96M11884

User’s Manual

Laser Bar Code Reader

BL-700 Series

Introduction

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 BL700. 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.

Symbols

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

		Setup software
		for BL series	IBM PC/AT
		(BL-H1WE)
	BL-700		or compatible
		Windows version
	BL-U1, BL-U2, N-42
		Serial
	Power supply unit	communication

LASER ON
STB	OK/NG
	TIMING

RS-232C

TEST
BL-700
	RS-422A
Trigger input
		Serial
OK/NG		communication
output
		PLC (RS-232C/422A unit)
		PLC link
Timing sensor
PLC etc.	Handheld	PLC (Link unit)
	programmer BL-P2E

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

BL-700

LASER ON	LASER ON	LASER ON	LASER ON
STB	STB	STB	STB
OK/NG	OK/NG	OK/NG	OK/NG
TIMING	TIMING	TIMING	TIMING
TEST	TEST	TEST	TEST
BL-700	BL-700	BL-700	BL-700

Handheld programmer

BL-P2E

BL setup software

Windows version

N-400 setup software

Windows version

PC

Multi-drop controller N-400

	Power supply unit	RS-485	RS-232C
	BL-U1, N-48

■ When using the RS-485 multi-drop link

*Use the N-400 setup software or handheld programmer BL-P2E to set the multidrop 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 “N- 400 User’s Manual”. The BL-700 User’s Manual does not cover these subjects.

v

Parts and Functions

BL-700

		1LASER ON LED
	LASER ON	2STABILITY LED
		3OK/NG LED
	STB
		4TIMING LED
	OK/NG
	TIMING	5TEST switch
	TEST
	BL-700

6Transmitter/receiver

7 Cable

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.
		See P. 64 to P. 65
3	OK/NG LED	• When OK output is ON: The green LED lights.
		• When NG output is ON: The red LED lights.
4	TIMING LED	Lit when trigger input is ON.
5	TEST SWITCH	This switch allows the following operations:
		• 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. See P.75
		• Reset the error status. See P.45
6	Transmitter/receiver	Window to emit laser beams and receive reflected lights.
7	Cable	Cable length is 1.8 m.

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	Communication status	•	Allows you to monitor the communication status of the
	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.
7	Power supply cable	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

N-42

1 READER port

			READER
		POWER	5 POWER LED
	2 TRIGGER input	SD
	terminals		6 Communication
	3 OK/NG output	RD	status indicator LEDs
	terminals		RS-232C
		BL-U2

	4 Power supply		7 RS-232C port
	terminals
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.

1 READER port

			READER
			7 POWER LED
	2 TRIGGER input	POWER	SD RD
	terminals		6 Communication
	3 OK/NG output		status indicator
		ON	LEDs
	terminals
			5 Terminator switch
		OFF

4 Power supply terminals

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.
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.

Notice

•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
	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 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

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

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

Chapter 1 Safety Precautions on Laser Product

1.3Labels Location

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 1 product.

■ FDA(CDRH)

CAUTION

LASER ON

STB

OK/NG

TIMING

TEST

BL-700

CAUTION

		RADIATION
	LASEROP		EN.
			.
	WHEN		BEAM
CAUTION	NOT
	DO	INTO
	STARE

■ IEC

LASER ON STB

OK/NG TIMING

TEST

BL-700

CAUTIONwhen radiationstare Laser. Do not . openbeam into

3

Chapter 1 Safety Precautions on Laser Product

1.4Safety Consideration

				Use of controls or adjustment or the performance of procedures other than those
		WARNING
				specified herein may result in hazardous radiation exposure.
1
				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.

1.5Safety 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

2.1BL-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.

1 2 3 4 5

2

6 7 8 9

D-sub 9-pin (female)

DTE specification (defined as terminal) #4-40 screw (male)

Pin No.	Cable color	Symbol	Description	Signal direction
Connector	Shield	FG	Frame ground	—
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	9			+					5 VDC
GND		5

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

6

Chapter 2 Connection and Installation

2.1.3 Wiring I/O

■ 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
	circuit	10 kΩ	4.7	TIM
			kΩ
				1
	Internal			5
		5 VDC		GND

Contact or	2
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

Internal circuit

	BL-700
	OK/NG
10 kΩ		4/6		Load
		5
					+
	GND
			* Rated load: 24 VDC
			(30 mA) max.

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

BL-700											PC
RD		2									2	SD
SD		3									3	RD
CS		8									4	RS
RS		7									5	CS
GND		5									7	SG
+5V		9									6	DR
											20	ER
D-sub 9-pin (male)									D-sub 25-pin (male)
# 4-40 screw									M2.6 screw

7

Chapter 2 Connection and Installation

2.2Connecting 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

FG line

CAUTION

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

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

1 2 3 4 5

D-sub 9-pin (male)

DCE specification (defined as terminal)

#4-40 screw (female)

	6	7	8	9
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
4	OK				OK	Input
5	GND (SG)				Ground (Common ground for respective	—
					signal)
6	NG				NG	Input
7	RS (RTS)				Ready to send RS-232C data.	Input
8	CS (CTS)				Request to send RS-232C data.	Output
					(Control method can be selected with the DIP
					switches.) See p. 9.
9	+5 V				+5 V power supply	Output

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.

8

Chapter 2 Connection and Installation

2.2.3 Setting BL-U1 DIP switches

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

OFF

* The figure on the left shows the

ON

default settings.

1

2

3

4

5

6

2

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

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
		Trigger					Power supply	OK/NG output	RS-422A/RS-485
			input				for sensors
						(12 VDC, 300 mA)
2
		Symbol					Description			Signal direction
		TIM					Trigger input			Input
										Input
		+12 V OUT-					+ terminal of power supply for sensor (12 VDC, 300 mA)			Output
							– terminal of power supply for sensor (0 V)			Output
		COM					Common terminal for OK/NG output			—
		OK					OK output			Output
		NG					NG output			Output
		SDA					+ terminal for RS-422A data transmission/			Output,
							RS-485 + terminal			Input/Output
		SDB					– terminal for RS-422A data transmission/			Output,
							RS-485 - terminal			Input/Output
		SG					Signal ground			—
		RDA					+ terminal for RS-422A data reception			Input
		RDB					– terminal for RS-422A data reception			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.

Round-shape	Fork-shape
6.0 mm or	6.0 mm or
less	less

■ 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–

+	Contact or
	solid-state
+
8.5 to 30 VDC

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

2

Load

+

■ I/O circuit diagram

• Input circuit diagram

3.3 kΩ

TIM

2.4 kΩ

• Output circuit diagram

	Internal circuit	OK/NG
Internal circuit		Load

COM +

2.2.5 Connecting RS-232C

Pin assignment

13	1	D-sub 25-pin (female)
		DCE specification (defined as terminal)
25	14	M2.6 screw (female)

Pin No.	Symbol	Function	Signal direction
1	FG	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
		(always ON)
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

11

Chapter 2 Connection and Installation

Wiring the RS-232C cable

	■ Connecting a PC
	25-pin serial port							9-pin serial port
		PC		BL-U1					PC			BL-U1
	FG	1			1		FG	Connector case					1		FG
								RD							SD
									2				2
	SD	2			2		SD
								SD	3				3		RD
	RD	3			3		RD
								ER	4				4		RS
	RS	4			4		RS
								SG	5				5		CS
	CS	5			5		CS
								DR	6				6		DR
2	DR	6			6		DR
								RS	7				7		SG
	ER						ER
		20			20
								CS	8				8
	SG						SG
		7			7
								CD	1				20		ER

D-sub 25-pin (male)	D-sub 25-pin (male)	D-sub 9-pin (female)	D-sub 25-pin (male)
M2.6 screw	M2.6 screw
		#4-40 screw	M2.6 screw

*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.

KV-10, 16, 24

OP-96368 (2.5 m) OP-96369

BL-U1*

KV-40, 80

KV-300*

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

■ Connecting KV-L2*

Port 1

Port 2

KV-L2

BL-U1*

KZ-L2

BL-U1*

FG

FG

1

1

1

FG

SD

2

2

SD

SD

3

2

SD

RD

3

3

RD

RD

5

3

RD

RS

4

4

RS

4

RS

CS

5

5

CS

5

CS

DR

6

6

DR

6

DR

ER

20

20

ER

20

ER

SG

7

7

SG

SG

1

7

SG

D-sub 25-pin (male)

D-sub 25-pin (male)

Terminal block

D-sub 25-pin (male)

M2.6 screw

M2.6 screw

M2.6 screw

*KEYENCE option OP-22149 (1.5 m) or commercially available cross cable can be used.

12

Chapter 2 Connection and Installation

■ Connecting MELSEC-A series

Connection with AJ71C24, AL71C24-S■, A0J2-C214-S1, AJ71UC24

Link unit			BL-U1*
FG	1			1	FG
SD	2			2	SD
RD	3			3	RD
RS	4			4	RS
CS	5			5	CS
DR	6			6	DR
SG					SG
	7			7
CD	8			8
ER	20			20	ER
D-sub 25-pin (male)			D-sub 25-pin (male)
M2.6 screw			M2.6 screw

Connection with A1SJ71(U)C24-R2/PRF, A2CCPUC24, A2CCPUC24-PRF

Link unit			BL-U1*
Connector case	–			1	FG
RD	2			2	SD
SD	3			3	RD
ER	4			4	RS	2
SG					CS
	5			5
DR	6			6	DR
RS	7			7	SG
CS	8			8
CD					ER
	1			20
D-sub 9-pin (male)			D-sub 25-pin (male)
M2.6 screw			M2.6 screw

■ SYSMAC-C series

Connection with C-200H-LK201(-V1), C-500-LK203, C-500-LK201-V1, C120-LK201-V1

Link unit			BL-U1*
FG	1			1	FG
SD	2			2	SD
RD	3			3	RD
RS	4			4	RS
CS					CS
	5			5
SG	7			7	SG
D-sub 25-pin (male)			D-sub 25-pin (male)
M2.6 screw			M2.6 screw

Connection with C-20H,

C-28H,

C-40H,

C-60H

	PLC		BL-U1*
FG	1			1	FG
SD	2			2	SD
RD	3			3	RD
RS	4			4	RS
CS	5			5	CS
SG	7			7	SG
D-sub 9-pin (male)			D-sub 25-pin (male)
M2.6 screw			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		BL-U1*
FG	1			1	FG
SD	2			2	SD
RD	3			3	RD
RS	4			4	RS
CS					CS
	5			5
SG	9			7	SG
D-sub 9-pin (male)			D-sub 25-pin (male)
M2.6 screw			M2.6 screw

13

Chapter 2 Connection and Installation
■ SYSMAC-CV series
Connection with CV500-LK201	Connection with CV500-LK201 (Port 2),
(Port 1)	CV500,
	CV1000,
	CVM1

	Link unit			BL-U1*				PLC		BL-U1*
	FG	1			1	FG	FG	1			1	FG
	SD	2			2	SD	SD	2			2	SD
	RD	3			3	RD	RD	3			3	RD
	RS	4			4	RS	RS	4			4	RS
2	CS	5			5	CS	CS	5			5	CS
	SG	7			7	SG	SG	9			7	SG
	D-sub 25-pin (male)			D-sub 25-pin (male)			D-sub 9-pin (male)			D-sub 25-pin (male)
	M2.6 screw			M2.6 screw			M2.6 screw			M2.6 screw

*KEYENCE option OP-22149 (1.5 m) or commercially available cross cable can be used.

Note: BL-U1 is not available in Europe.

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*.

	External unit	Twisted pair cable
	BL-U1*		BL-U1*
	SG			SG
	RD + (RDA)			SDA
	RD – (RDB)			SDB
	SD + (SDA)			RDA
	SD – (SDB)			RDB

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

See P.35.

•The cable can be extended to within 1.2 km.

■ Connecting KV-L2*

Connecting the unit to RS-422A port 2

Link Unit			Twisted pair cable	BL-U1*
	SG				SG
	RDB				SDA
	RDA				SDB
	SDB				RDA
	SDA				RDB

14

Chapter 2 Connection and Installation

■ Connecting the MELSEC-A series

Connecting with AJ71C24,

AJ71C24-S■,

AJ71UC24,

A0J2-C214-S1,

A1SJ71(U)C24-R4

Link unit			Twisted pair cable	BL-U1*
	SG				SG
	RDA				SDA		2
	RDB				SDB
	SDA				RDA
	SDB				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

Twisted pair cable

BL-U1*

Communication

Twisted pair cable

BL-U1*

SG

board

3

SG

SG

9

SG

RDB

1

SDA

RDB

8

SDA

RDA

6

SDB

RDA

6

SDB

SDB

5

RDA

SDB

2

RDA

SDA

9

RDB

SDA

1

RDB

FG

7

D-sub 9-pin (male)

D-sub 9-pin (male)

M2.6 screw

M2.6 screw

■ Connecting SYSMAC-CV series

Connecting with CV-500-LK201,

CV500,

CV1000,

CVM1

	PLC	Twisted pair cable	BL-U1*
SG	9			SG
RDB	8			SDA
RDA	6			SDB
SDB	2			RDA
SDA	1			RDB
RS	4
CS
	5

D-sub 9-pin (male)

M2.6 screw

Note: BL-U1 is not available in Europe.

15

Chapter 2 Connection and Installation

2.3Wiring 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
	2	24V DC IN	24V DC IN
		+ –	N.C. N.C. N.C. + –
		24 VDC	24 VDC
		+	+

		Make sure that the power supply provides 24 VDC. If the power supply output
CAUTION
		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

■ READER port pin assignment

	1	2	3	4	5	D-sub 9-pin (male)
						DCE specification (defined as terminal)
						#4-40 screw (female)
	6		7	8	9
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
4	OK				OK signal		Input
5	GND (SG)				Ground (Common ground for respective signal)		—
6	NG				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

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

16