declare under our sole responsibility that t he product
DS4300-XXXX, Laser Scanner and all its models
to which this declarat ion relates is in c onformi ty with the fol lowing standards or other norm ati ve
documents
EN 55022, August 1994
EN 50082-2, March 1995
:L
IMITS AND METHODS OF MEASUREMENTS OF RADIO DISTURBANCE
CHARACTERISTICS OF INFORMATION TECHNOLOGY EQUIPMENT
LECTROMAGNETIC COMPATIBILITY
:E
P
ART
NDUSTRIAL ENVIRONMENT
2: I
Following the provision of the Directive(s):
89/336 CEE
AND SUCCESSIVE AMENDMENTS
Lippo di Calderara, 16.11.1998
. G
, 92/31 CEE; 93/ 68 CE E
(ITE)
ENERIC IMMUNITY STANDARD
Ruggero Cacioppo
Quality Assurance Supervisor
.
Product names mentioned herein are for identificat ion purposes only and may be trademarks
and or registered trademarks of their respec tive companies .
Datalogic S.p.A. reserves the right to make modifications and improvements without prior
notification.
The following can be used as a checklist to verif y all of the steps necessary
for complete installation of the DS4300 scanner.
1) Read all inf ormation in the section "Safety Precautions" at the beginning
of this manual.
2) Correctly position and mount the scanner for barcode reading according
to the information in paragraphs 2.2, 2.5 and 3.4.
3) Provide correct system cabling according to the signals necessary for
your application (see the applicable sub-paragraphs under 2.3 or 2.4).
4) Install the Configuration Disk.
Upon successful completion of the installation, the readme.hlp file is
opened, giving details about how to get started configuring your scanner.
See also the Guide to Rapid Configuration link.
Specific parameter details are available in the Help On Line.
Fine tuning of the scanner position for barcode
reading can be accomplished using the Test Mode
as described in WinHost.
The installation is now complete.
NOTE
v
DS4300
General View
10
9
8
11
5
6
Cable with 25-pin conn ector
1
2
Mounting holes
Ready LED
3
2
1
7
Figure A
7
8
9
Warning and Classification labels
Warning Label
Laser active LED
4
3
4
Good Read LED
External Trigger LED
5
6Data TX LED
vi
Laser beam output window
10
Accessory mounting holes
11
DS4300
General View
2
10
11
9
8
5
6
4
1
Cable with junction box
1
2
Mounting holes
Ready LED
3
4
Good Read LED
External Trigger LED
5
6Data TX LED
Figure B
7
8
9
10
11
7
3
Warning and Classification labels
Warning Label
Laser active LED
Laser beam output window
Accessory mounting holes
vii
SAFETY PRECAUTIONS
LASER SAFETY
The following information is provided to comply with the rules imposed by
international authorities and refers to the correct use of the DS4300 scanner.
Standard Regulations
This scanner utilizes a low-power laser diode. Although staring directly at the
laser beam m omentarily causes no known biological dam age, avoid staring
at the beam as one would with any very strong light source, such as the s un.
Avoid that the laser beam hits the eye of an observer, even through ref lec tive
surfaces such as mirrors, etc.
This product conform s to the applicable requirements of both IEC 825-1 and
CDRH 21 CFR 1040 at the date of manufac ture. T he s c anner is c lass if ied as
a Class 2 laser product ac cording to IEC 825-1 regulations and as a Class II
laser product according to CDRH regulations.
There is a safety device which allows the laser to be s witched on only if the
motor is rotating above the threshold for its correct scanning speed.
The laser beam can be switched off through a s oftware comm and (see also
“Beam Shutter” in the WinHost Help On Line).
WARNING
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in exposure to hazardous visible laser light.
The laser light is vis ible to the human eye and is em itted fr om the window on
the front of the scanner (Figure A/B,
10
).
viii
W arning labels indicating expos ure to laser light and the devic e clas sif ication
are applied onto the body of the scanner (Figure A/B,
DATALOGIC S. p.A. Via Candini, 2
40012 LIPPO DI CALDERARA ( BO ) ITALY
Model No.Serial No.
VoltAmp.
Manufactured
This product conforms to the ap plicable requirements of
21CFR1040 at the date of manufacture.
LASER LIGHT
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
MAXIMUM OUTPUT RADIATION 1 mW
EMITTED WAVE LENGTH 630~680 nm
TO IEC 825-1 (1993)
Warning and device class label s
8
and
7
).
For installation, use and maintenance it is not necessary to open the
scanner.
The laser diode used in this device is classified as a class 3B laser product
according to IEC 825-1 regulations and as a Class IIIb laser product
according to CDRH regulations. As it is not poss ible to apply a classification
label on the laser diode used in this device, the following label is reproduced
here:
LASER LIGHT
AVOID EXPOSURE TO BEAM
CLASS 3B LASER PRODUCT
MAX. OUTPUT RADIATION 7 mW
EMITTED WAVE LENGTH 630~680 nm
TO IEC 825-1 (1993)
Laser diode class label
Any violation of the optic parts in particular can cause radiation up to the
maximum level of the laser diode (30 mW at 630 to 680 nm).
ix
POWER SUPPLY
For Model DS4300-1000: This device is intended to be supplied by a UL
Listed Direct Plug-In Power Unit marked "Class 2", output rated 10-30 V,
minimum 0.55 A.
This device may also be supplied by a UL Listed Power Unit with a "Class 2"
or LPS power source which supplies power directly to the scanner via the
25-pin connector.
For Model DS4300-1001: This device is intended to be supplied via the
Junction Box by an NEC Class 2 Power Source, rated 10-30 V, minimum
0.55 A.
x
DATALOGICDS4300
1 GENERAL FEATURES
1.1 INTRODUCTION
The DS4300 is a compact laser scanner complete with decoder which
employs Datalogic’s powerful
technology. It was designed to satisfy the most demanding requirements
associated with omni-directional scanning, reading of non-oriented barcode
labels, and reading of poorly printed or damaged labels.
Standard Application Program
A Standard Application Program is factory-loaded onto the DS4300. This
program contr ols bar c ode reading, s er ial port interfacing, data formatting and
many other operating and control parameters.
ACR™
(Advanced Code Reconstruction)
It is completely user configurable from a host computer using the W inHost
interface utility program provided on diskette with the scanner or using the
Host Mode programming procedure, by ESC sequences via the serial
interface.
There are four different programmable operating modes to suit various
barcode reading system requirements. Included in these is a test mode to
verify the reading features and exact positioning of the sc anner without using
external tools.
Programmability
If your requirements are not met by the Standard Application Program,
Custom Application Programs can be developed by your local Datalogic
distributor.
General Features -
1.1
DS4300DATALOGIC
1.2 DESCRIPTION
Some of the main features of this scanner are given below:
•
code reconstruction
•
high scanning speed (800 scans/sec)
•
completely configurable from host computer
•
2 serial communication interfaces
•
reads most popular codes
•
supply voltage from 10 to 30 Vdc
•
test mode to verify the reading features and exact positioning of the
scanner without the need for external tools
•
configurable in differ ent operating modes to suit the most various bar code
reading system requirements
•
code verifier
•
possibility to detect the position of the label in the scan line
The DS4300 scanner uses a solid state laser diode as a light source; the
light emitted has a wavelength between 630 and 680 nm. Refer to the
section "Safety Precautions" at the beginning of this m anual for information
on laser safety.
The reader is contained in a rugged aluminum housing; the mechanical
dimensions are 101 x 83.5 x 42 mm and it weighs about 800 g.
The protection class of the enclosure is IP65, therefore the reader is
particularly suitable for industrial environm ents where high protec tion against
harsh external conditions is required.
- General Features
1.2
DATALOGICDS4300
Electrical connection is provided through a cable on the side of the reader;
this cable is terminated with a 25-pin connector (25-pin connector models,
see paragraph 1.3, Figure A,
see paragraph 1.3, Figure B,
) or by a junction box (junction box m odels,
1
).
1
The laser beam output window is on the right hand side of the scanner
(Figure A/B,
(Figure A/B,
). A green LED on the same side indicates the las er is active
10
).
9
A security system allows the laser to activate only once the motor has
reached the correct rotational speed; consequently the laser beam is
generated after a slight delay from the power on of the scanner.
The four LEDs on the left hand side of the scanner indicate the following:
READY
(red), indicates the reader is connected to the power supply
and the startup was successful. If the startup is not
GOOD READ
successful, this LED blinks. (Figure A/B,
(red), is used to signal successful barcode decoding. It is
).
3
also used in Test mode to signal the decoding percentage
(for details refer to the section "Test Mode" in the W inHost
4
).
).
).
EXT TRI G
TX DATA
Help On Line). (Figure A/B,
(yellow), indicates external trigger activity (for details refer to
par.2.4.4. (Figure A/B,
5
(green), indicates data transmission on the main serial
output line. (Figure A/B,
6
The screw holes on the body of the reader are f or m echanical fix ture (Figure
2
A/B,
); the screw holes shown in Figure A/B, 11 are to attach accessories
such as the optional 90° mirror.
General Features -
1.3
DS4300DATALOGIC
1.3 AVAILABLE MODELS
The DS4300 scanner is available in versions that differ in regard to the
following characteristics:
•
Optical Resolution
•
Cable Termination
The following models are therefore available:
DS4300 - 100X
Optical Resolution
1 = Standard Resolution
Cable Termination
0 = 25-pin connector
1 = junction box
1.4 ACCESSORIES
The following accessories are available on request for the DS4300:
•
90° deflection mirrorGFC-41
•
Power Block 110 VacPG110/DVE-1212A
•
Power Block 220 VacPG220/DVE-1212A
•
20 mA Active Current Loop interfaceINT-24
- General Features
1.4
DATALOGICDS4300
2 INSTALLATION
2.1 PACKAGE CONTENTS
Verify that the DS4300 reader and all the parts supplied with the equipment
are present and intact when opening the packaging; the list of parts includes:
1) DS4300 reader with cable
2) Installation manual
3) Barcode test chart
4) DS4300 communication and utility program disk
5) Mounting kit
•
Mounting screws and washers (4 ea.)
•
Mounting bracket (1)
*Junction box (for junction box models only, see paragraph 1.3)
4
3
2
5
*
1
Figure 2.1 - DS4300 package contents
Installation -
2.1
DS4300DATALOGIC
2.2 MECHANICAL INSTALLATION
DS4300 can be installed to operate in different positions. The four screw
holes (M4 x 5) on the body of the reader are for mechanical fixture (Figure
2
A/B,
The diagram below gives the over all dimensions of the scanner and may be
used for its installation.
Refer to paragraph 2.5 for correct positioning.
).
- Installation
2.2
Figure 2.2 - Overall dimensions
DATALOGICDS4300
2.3 JUNCTION BOX INSTALLATION
The junction box provides a passive connection between your scanner and
the outside world in a fast and practical way. It represents an alternative to
the 25-pin connector models. Figure 2.3 shows the basic layout of DS4300
using the junction box.
Scanner
cable
DS4300
Figure 2.3 - Scanner using junction box
Junction Box
System cabl es
For junction box connections, the scanner has a cable that terminates in a
24-pin connector that plugs into the junction box. The system cables pass
through 6 glands in the side of the junction box and the individual wires
connect to spring clamp terminal blocks inside which provide access to all
scanner signals.
2.3.1 Junction Box Mounting
The diagram below shows the dim ensions of the junc tion box and its relative
mounting holes.
Figure 2.4 - Junction box dimensions
mm
in
Installation -
2.3
DS4300DATALOGIC
The junction box is designed to be mounted to a panel of metal, plastic or
other appropriate material using the mounting screws provided in the
package. To do this:
1) Open the junction box by unscrewing the 4 cover screws.
If necessary, using the two mounting holes inside the junction box as a
pattern, mark the panel with an appropriate objec t and then drill two s m all
pilot holes in the panel.
2) Align the junction box and ins ert the two self-threading scr ews with their
washers and screw them into the panel until tight (see Figure 2.5).
- Installation
2.4
Figure 2.5 - Junction box mounting
DATALOGICDS4300
2.3.2 Junction Box Electrical Connections
The connection and wiring procedure for the junction box is described as
follows:
1) Open the junction box by unscrewing the 4 cover screws.
2) Pass all System cables through the glands in the junction box housing.
3) To connect the power and input/output signals:
•
Prepare the individual wires of the system cables by stripping the
insulation back approximately 11 mm.
•
Using a device such as a screwdriver, push down on the orange
lever directly above the clamp (see Figure 2.6).
•
Insert the wire into the clamp and release the lever.
The wire will now be held in the spring clamp.
Figure 2.6 - System cable connections to the junction box
The wiring used can be solid or stranded but must meet the following
specifications.
To allow connection of an NEC Class 2
Power Unit, use a correct female plug
adapter.
Junction Box
NEC Class 2
Power supply
Female Plug
System cables
Figure 2.8 - NEC Class 2 Power uni t connecti ons
*
The signals on pins 24, 25 and 26 are repeated
on pins 29, 30 and 31 to facilitate network
connections (i.e. Multiplexer connections using
the RS485 half-duplex Interfac e). In this way the
network bus can enter and exit the junction box
from different spring clamps but be physically
connected together.
PinRS232RS485
24, 29TX232TX485+RTX485+
25, 30RTS232TX485-RTX485-CLOUT26, 31SGND MainSGND MainSGND Ma inSGND Main
32RX232RX485+
33CTS232RX485-CLIN-
- Installation
2.6
full-duplex
RS485
half-duplex
20 mA CL
(INT-24 Only)
DATALOGICDS4300
4) After wiring the junction box and while the scanner is unplugged from the
power supply, place the Scanner cable so that the rubber seal fits into the
cutout in the housing of the junction box and plug the 24-pin connector
into connector J1 on the PCB inside the junc tion box as shown in figure
2.9.
Rubber seal
Scanner cable
Figure 2.9 - Scanner cable connections to the junction box
J1
5) Close the junction box using the 4 cover screws mak ing sure the rubber
seal is fitted correctly between the parts of the housing.
The junction box is now installed which completes the electr ical connections
for your scanning system.
If it ever becomes necessary to disconnect the scanner from the junction
box, simply reverse the procedure in step 4.
Installation -
2.7
DS4300DATALOGIC
2.4 ELECTRICAL CONNECTIONS FOR 25-PIN MODELS
25-pin connector models (see paragraph 1.3) are equipped with a cable
terminated by a 25-pin D-sub connector for connection to the power supply
and input/output signals. The details of the connector pins are indicated in
the following table:
Figure 2.10 - 25-pin D-sub connector
25-pin D-sub connector pinout
PinNameFunction
13VSPower supply input voltage +
25GNDPower supply input voltage -
Power can be supplied to the scanner through the pins provided on the 25pin connector used for communication with the host (Figure 2.11):
DS4300
VS
GND
CHASSIS
13
25
1
Figure 2.11 - Power supply connections
Earth Ground
USER INTERFACE
V+ (10 - 30 Vdc)
GND
CHASSIS
or through the jack connector on the side of the 25-pin connector for
connections to a UL Listed Direct Plug-in Power Unit (Figure 2.12). If the jack
input is used to supply power to the DS4300, pin 13 is automatically
disconnected; the supply voltage for the external trigger remains on pin 9.
The plug connector is not supplied with the DS4300.
Figure 2.12 - Power supplied using the jack connector
The power must be between 10 and 30 Vdc only. There is a curr ent peak of
about 1A at 10 V during power on caused by the motor starting.
It is recommended to connect pin 1 (CHASSIS) to a common earth ground.
Jack
GND
Plug
V+ (10 - 30 Vdc)
Installation -
2.9
DS4300DATALOGIC
2.4.2 Main Serial Interface
The signals relative to the following serial interface types are available on the
input/output connector:
RS232
RS485 FULL DUPLEX
RS485 HALF DUPLEX
An active 20-mA Current Loop interface is available if the optional INT-24
accessory is installed. This accessory interface replaces the RS232/RS485
selections.
The main serial interface type and its relative parameters (baud rate,
data bits, etc.) are selected via software either using the WinHost utility
program or Host Mode programming. For more details refer to the
section "Main Interface Menu" in the WinHost Help On Line.
Details regarding the connections and use of the main interf ace selec tion are
given in the next paragraphs.
RS232
The serial interface is used in this case for point-to-point connections; it
handles comm unication with the host computer and allows both tr ansm iss ion
of code data and the configuration of the scanner. This is the default
interface.
The following pins of the 25-pin connector are used for RS232 interface
connection:
PinNameFunction
2TX232transmitted data
3RX232received data
4RTS232request to send
5CTS232clear to send
7SGND Mainsignal ground main interface
- Installation
2.10
DATALOGICDS4300
DS4300
2
TX232
3
RX232
4
RTS232
CTS232
5
7
SGND Main
RTS/CTS HARDWARE HANDSHAKING ENABLED
Figure 2.13 - RS232 main interface connecti ons
USER INTERFACE
RXD
TXD
DCD
DTR
SGND
The RTS232 and CTS232 signals control data transm ission and s ynchronize
the connected devices.
If the RTS/CTS handshaking protocol is enabled, the DS4300 activates the
RTS232 output to indicate a message is to be trans m itted. The r eceiving unit
activates the CTS232 input to enable the transmission.
Figure 2.14 - RS232 control signals
Installation -
2.11
DS4300DATALOGIC
RS485 Full-Duplex
The RS485 full-duplex interface is used for non-polled communication
protocols in point-to-point connections over longer distances than those
acceptable for RS232 communications or in electrically noisy environments.
The following pins of the 25-pin connector are used for RS485 full-duplex
communications:
PinNameFunction
2TX485+RS485 transmitted data +
4TX485-RS485 transmitted data 3RX485+RS485 received data +
5RX485-RS485 received data 7SGND Mainsignal ground main interface
DS4300
Figure 2.15 - RS485 full-duplex connections
2
TX485+
4
TX485-
3
RX485+
RX485-
5
7
SGND Main
USER INTERFACE
RX485
TX485
RS485REF
- Installation
2.12
DATALOGICDS4300
RS485 Half-Duplex
The RS485 half-duplex (3 wires + shield) interface is used for polled
communication protocols.
It can be used for Multidrop connections in a master/slave layout or with a
Datalogic Multiplexer, (see par. 2.6.4 and 2.6.5).
The following pins of the 25-pin connector are used for RS485 half-duplex
communications:
PinNameFunction
2RTX485+RS485 transmitted/received data +
4RTX485-RS485 transmitted/received data 7SGND Mainsignal ground main interface
DS4300
2
RTX485+
4
RTX485-
7
SGND Main
Figure 2.16 - RS485 half-duplex connections
MULTIPLEXER
RTX485+
RTX485-
RS485REF
Installation -
2.13
DS4300DATALOGIC
The figure below shows a multidrop configuration with DS4300 scanners
connected to a Multiplexer.
CHASSIS
max. 2 m.
DS4300
# x
1
(up to 31)
DS4300
# 1
1
2
4
7
2
4
7
120 Ohm
max. 120 0 m.
RTX485+
DS4300
# 0
1
2
RTX485-
4
SGND Main
7
three wires
+ shield
RTX485+
MULTIPLEXER
RTX485-
RS485REF
SHIELD
120 Ohm
Figure 2.17 - DS4300 multidrop connection to a Multiplexer
- Installation
2.14
DATALOGICDS4300
20 mA Current Loop (INT-24 Accessory Only)
W hen the INT-24 access ory board is installed, the DS4300 is equipped with
a 20 mA active current loop interface.
The following pins of the 25-pin connector are used for the connections:
For 20 mA passive current loop interface connections, contact your local
Datalogic representative.
Installation -
2.15
DS4300DATALOGIC
2.4.3 Auxiliary RS232 Interface
The auxiliary serial interface is used exclusively for RS232 point-to-point
connections.
The parameters relative to the auxiliar y interface (baud rate, data bits , etc.)
as well as particular communication modes such as Local Echo can be
defined using the WinHost utility program or Host Mode programming. For
more details refer to paragraph 2.6 and to the section "Auxiliary Interface
Menu" in the WinHost Help On Line.
The following pins of the 25-pin connector are used to connect the RS232
auxiliary interface:
PinNameFunction
20RXAUXauxiliary RS232 received data
21TXAUXauxiliary RS232 transmitted data
23SGND Auxsignal ground auxiliary interface
The EXT TRIG inputs are us ed in the ON-Line Operating mode and tells the
scanner to scan for a code. The active state of this input is selected in
software. Refer to the WinHost Help On Line. The yellow led, (Figure A/B,
5
), is on when the External Trigger signals the active reading phase
.
These inputs are optocoupled and can be driven by both an NPN or PNP
type command. The connections are indicated in the following diagrams:
Vext
30 Vdc max.
USER INTERFACEDS4300
+ 5V
18/6/14
19/10/15
Figure 2.20 - Input NPN command using external power
+
V
-
USER INTERFACEDS4300
9
+ 5V
18/6/14
19/10/15
25
VS
+
-
GND
V
Ground
Signal
Signal
Figure 2.21 - Input NPN command using DS4300 power
Installation -
2.17
DS4300DATALOGIC
30 Vdc max.
Vext
USER INTERFACE
V
+ 5V
DS4300
18/6/14
19/10/15
+
-
Figure 2.22 - Input PNP command using external power
+ 5V
DS4300
9
18/6/14
19/10/15
25
VS
+
-
GND
USER INTERFACE
V
Signal
Ground
Signal
Figure 2.23 - Input PNP command using DS4300 power
The electrical features of the inputs are:
Maximum voltage = 30 Vdc
Maximum current = 25 mA.
An anti-disturbance hardware filter is implemented on the External Trigger
input (< 5 milliseconds delay).
An additional 15 ms (typical) delay can be implemented through a dedicated
software parameter (refer to WinHost Help On Line).
- Installation
2.18
DATALOGICDS4300
2.4.5 Outputs
The following pins are present on the 25-pin connector of the scanner:
The meaning of the two outputs OUT1 and OUT2 can be defined by the user
(No Read, Right or Wrong). Refer to WinHost Help On Line.
By default, OUT1 is associated with the No Read event, which activates
when the code signalled by the External Trigger is not decoded. OUT2 is
associated with the Right event, which activates when the code is decoded
correctly.
DS4300
8/11
22/12
Figure 2.24 - Open collector output connection
OUT1+/OUT2+
OUT1-/OUT2-
USER INTERFACE
These outputs are both level or pulse configurable.
Vext
40 Vdc max
Installation -
2.19
DS4300DATALOGIC
2.5 POSITIONING
The DS4300 scanner is able to dec ode m oving barc ode labels at a var iety of
angles, however significant angular distortion may degrade reading
performance.
When mounting the DS4300 tak e into consideration these three ideal label
position angles:
Follow the suggestions below for the best orientation:
Pitch 0°, Skew 10° to 30° and Tilt 0°
.
P
The
Pitch
angle is represented by
the value P in figure 2.25. Position
the reader in order to
Pitch
The
angle.
Skew
angle is represented by
minimize
the
the value S in Figure 2.26. Position
the reader to
Skew
the
assure at least 10°
for
angle. This avoids the
direct reflection of the laser light
emitted by the DS4300.
Figure 2.25 - Pitch angle
S
Figure 2.26 - Skew Angle
T
Tilt
The
angle is represented by the
value T in figure 2.27. Position the
reader in order to
minimize
angle.
- Installation
2.20
the
Tilt
Figure 2.27 - Tilt angle
DATALOGICDS4300
2.6 TYPICAL LAYOUTS
The following typical layouts refer to system hardware conf igurations. Dotted
lines in the figures refer to optional hardware configurations within the
particular layout.
These layouts also require the correct setup of the software configuration
parameters. Complete software configuration procedures can be found in the
Guide To Rapid Configuration
in the WinHost Help On Line.
2.6.1 Point-to-Point
In this layout the data is transmitted to the Host on the m ain serial interface.
Host Mode programming can be accomplished either through the main
interface or the auxiliary interface.
In Local Echo communication mode, data is transmitted on the RS232
auxiliary interface independently from the main interface selection.
When On-Line Operating mode is used, the scanner is activated by an
External Trigger (photoelectric sensor) when the object enters its reading
zone.
DS4300
Terminal
1
2
Main serial interface
1
Auxiliary serial interface (Local Echo)
2
3
External Trigger (for On-Line mode)
Host
3
Figure 2.28 - Poi n t-to -P o int layout
Installation -
2.21
DS4300DATALOGIC
2.6.2 Pass Through
Pass through mode allows two or m ore devices to be c onnected to a single
external serial interface.
Each DS4300 transmits the messages received by the auxiliary interface
onto the main interface. All messages will be passed through this chain to the
host.
When On-Line Operating mode is used, the scanner is activated by an
External Trigger (photoelectric sensor) when the object enters its reading
zone.
The main and auxiliary ports are connected as shown in the figure below:
1
Host
2
DS4300DS4300
33
Main serial int erf ac e
1
Auxiliary serial interface
2
External Trigger (for On-Line mode)
3
Figure 2.29 - Pass through layout
1
- Installation
2.22
DATALOGICDS4300
2.6.3 RS232 Master/Slave
The RS232 master/slave connection is used to collect data from several
scanners to build either an om ni-directional or a multi-s ided reading system;
there can be one master and up to 9 slaves connected together.
The Slave scanners use RS232 only on the main and auxiliary serial
interfaces. Each slave DS4300 transmits the messages received by the
auxiliary interface onto the main interface. All messages will be passed
through this chain to the Master.
The Master scanner is connected to the Host on the main serial interface.
The possible main interface types for the Master scanner are RS232 or
RS485. (20 mA C.L. can also be used if the INT-24 accessory is installed).
Either On-Line or Serial On-Line Operating modes
can be used in this layout.
When On-Line Operating mode is used, the external trigger signal is
unique to the syst em however it is not necessary to bring the external
trigger signal to the Slave scanners.
The main and auxiliary ports are connected as shown in the figure below.
1
2
DS4300
Slave
1
DS4300 Slave
2
1
DS4300
Master
3
Main serial interface
1
Auxiliary serial interface
2
3
External Trig ger (for On-Line mode)
Figure 2.30 - RS232 Master/Slave layout
Host
Installation -
2.23
DS4300DATALOGIC
2.6.4 RS485 Master/Slave
The RS485 master/slave connection is used to collect data from several
scanners to build either an om ni-directional or a multi-s ided reading system;
there can be one master and up to 5 slaves connected together.
The Slave scanners are connected together using RS485 half -duplex on the
main serial interface. Every Slave scanner m ust have a m ultidrop address in
the range 0-4.
The Master scanner is also connected to the Host on the RS232 auxiliary
serial interface.
The External T rigger signal is unique to the s ystem; there is a single reading
phase and a single message from the master scanner to the Host computer.
It is necessary to bring the External Trigger signal to all the scanners.
The main and auxiliary ports are connected as shown in the figure below.
DS4300 Slave
2
1
1
DS4300
Slave
3
1
Auxiliary serial interface
1
RS485 HD Main serial interface
2
3External Trigger
* Master
Host
Figure 2.31 - RS485 Master/Slave layout
* DS4300 cannot be used as t he Master in the RS 485 Master/S lave layout .
compatible scanners see the Guide to Rapid confi guration in the WinHost Help On Line.
- Installation
2.24
For a list of Mast er
DATALOGICDS4300
NOTE
The auxiliary serial interface of the slave s canners can be used
in Local Echo communication mode to control any single
scanner (visualize collected data) or to configure it using the
WinHost utility or Host Mode Programming procedure.
The termination resistors of the RS485 bus must not be
installed.
2.6.5 Multiplexer
Each scanner is connec ted to an MX4000 with the RS485 half duplex mode
on the main interface.
MX4000
Host
1
2
3
0
2
3
RS485 HD Main interface
1
Auxiliary interface (Local Echo)
2
External Trig ger (for On-Line mode)
3
Figure 2.32 - Multiplexer layout
1
2
31
3
The auxiliary serial interface of the slave scanners can be used in Local Echo
communication mode to control any s ingle scanner ( visualize collected data)
or to configure it using the WinHost utility or Host Mode Programming
procedure.
When On-Line Operating mode is used, the scanner is activated by an
External Trigger (photoelectric sensor) when the object enters its reading
zone.
Installation -
2.25
DS4300DATALOGIC
- Installation
2.26
This page is intentional l y l ef t blank.
DATALOGICDS4300
3 READING FEATURES
3.1 ADVANCED CODE RECONSTRUCTION
The traditional way of barcode reading could be called "Linear Reading". In
this case, the laser beam crosses the barcode symbol from its beginning to
its end as shown in Figure 3.1.
Laser Beam
Figure 3.1 - Linear reading
In “Advanced Code Reconstruction” m ode, it is no longer necessary for the
laser beam to cross the label from the start to the end. With just a set of
partial scans on the label (obtained using the m otion of the label itself) , the
DS4300 is able to "reconstruct" the barcode. A typical set of partial scans is
shown in Figure 3.2.
Code Direction
Figure 3.2 - Partial scans
None of the partial scans contains the whole label. The decoder aligns each
partial scan correctly and combines them in order to obtain the entire code.
The alignment is performed by calculating the time difference from one
partial scan to another using a reference code element.
Reading Features -
3.1
DS4300DATALOGIC
α
g
α
3.1.1 Tilt Angle for Advanced Code Reconstruction
The most important parameter in Advanced Code Reconstruction is the
value of the maximum tilt angle (α maximum) under which the code
reconstruction process is still possible.
W e define the Tilt angle as the angle (α) between the laser beam and a line
parallel to the barcode label, as shown in Figure 3.3.
Laser Beam
0° to
= tilt an
Figure 3.3 - Tilt angle
α
max
le
The form ulas to calculate α maximum depend on various parameters such
as: label height, number of scans per second, code motion speed, etc. To
obtain α maximum for your application, please contact your Datalogic
representative.
You must remem ber that the decoder will be able to read the label with a tilt
angle between + α max and - α max as shown in Figure 3.4 (the shaded
zones are the NO READ zones).
0°
-
α
+
α
- Reading Features
3.2
Laser Beam
Figure 3.4 - Reading zones with
αααα
max
DATALOGICDS4300
3.2 DECODING CAPACITY IN LINEAR MODE
When in Linear Reading mode, the number of reads performed by the
DS4300 and therefore the decoding capacity, is influenced by the following
parameters:
•
number of scans per second
•
code motion speed
•
label dimensions
•
scan direction with respect to code motion
At least 5 scans during the code passage should be allowed to ensure a
successful read.
3.2.1 Step Ladder Mode
Code motion
moving at LS speed
DS4300
Figure 3.5 - "Step Ladder" scanning mode
LH
Laser Beam
If scanning is perpendic ular to the code motion direction (Figure 3.5 - "step
ladder" mode), the number of effective scans performed by the reader is
given by the following formula:
SN = [(LH/LS) * SS] - 2
These symbols signify:
SN =number of effective scans
LH =label height (in mm)
LS =label movement speed (in mm/s)
SS =number of scans per second
Reading Features -
3.3
DS4300DATALOGIC
For example, the DS4300 ( 800 scans/sec.), for a 25 mm high c ode moving
at 1250 mm/s performs:
[(25/1250) * 800] - 2 = 14 effective scans.
3.2.2 Picket Fence Mode
Laser Beam
Code motion
moving at LS speed
DS4300
Figure 3.6 - "Picket Fence" scanning mode
LW
FW
If scanning is parallel to the code motion, (Figur e 3.6 - "picket f ence" mode),
the number of effective scans is given by:
SN = [((FW-LW)/LS) * SS] - 2
These symbols signify:
SN =number of effective scans
FW =reading field width (in mm)
LW =label width (in mm)
LS =label movement speed (in mm/s)
SS =scans per second
For example, f or a 100 mm wide code m oving in a point where the reading
field is 200 mm wide at a 2000 mm/s speed, the DS4300 (800 scans per
sec.), performs:
[((200-100)/2000) * 800] - 2 = 38 scans
- Reading Features
3.4
DATALOGICDS4300
3.3 PERFORMANCE
The DS4300 scanner reads codes with densities from 0.20 mm (8 mils) to
1.00 mm ( 40 m ils) in the zone between 50 mm ( 1.9 in) and 400 m m (15.7 in)
from the emission window.
DS4300 can be optimized for reading high density codes ( between 0.20 mm
(8 mils) and 0.30 mm (12 mils) by configuring the Code Resolution parameter
(see WinHost Help On Line).
Refer to the diagrams given in paragraph 3.4 for further details on the
reading features. These diagrams are taken on various resolution sample
codes at a 25 °C ambient temperature, depending on the conditions in the
notes under each diagram.
If standard devices do not s atisf y specific requir em ents, c ontact your neares t
Datalogic distributor, supplying code samples, to obtain com plete inf orm ation
on the reading possibilities.
Reading Features -
3.5
DS4300DATALOGIC
3.4 READING DIAGRAMS
The following diagrams show the reading distance f or bar codes with diff erent
densities.
DS4300-100X (Code Resolution Standard)
0.50 mm
(20 mils)
0.60 mm
(24 mils)
≥
0.80 mm
(31 mils)
NOTE:
(0,0) is the center of the laser beam output window
CONDITIONS:
Test Codes used=Interleaved 2/5 and Code 39
(according to the Datalogic Barcode Test Chart)
"Pitch" angle=0
"Skew" angle=10
"Tilt" angle=0
Reading Mode=Linear
Code Resolution=Standard
°
°
°
- Reading Features
3.6
DATALOGICDS4300
DS4300-100X (Code Resolution High)
0.20 mm
(8 mils)
0.30 mm
(12 mils)
NOTE:
(0,0) is the center of the laser beam output window
CONDITIONS:
Test Codes used=Interleaved 2/5 and Code 39
(according to the Datalogic Barcode Test Chart)
"Pitch" angle=0
"Skew" angle=10
"Tilt" angle=0
Reading Mode=Linear
Code Resolution=High
°
°
°
Reading Features -
3.7
DS4300DATALOGIC
- Reading Features
3.8
This page is intentional l y l ef t blank.
DATALOGICDS4300
4 MAINTENANCE
4.1 CLEANING
Clean the laser beam output window periodically for continued correct
operation of the reader.
Dust, dirt, etc. on the window may alter the reading performance.
Repeat the operation frequently in particularly dirty environments.
Use soft material and alcohol to clean the window and avoid any abrasive
substances.
WARNING
Clean the window of the DS4300 when the scanner
is turned off or, at least when the laser beam is
deactivated.
Maintenance -
4.1
DS4300DATALOGIC
- Maintenance
4.2
This page is intentional l y l ef t blank.
DATALOGICDS4300
5 TECHNICAL FEATURES
ELECTRICAL FEATURES
Power
Supply voltage10 to 30 Vdc
Power consumption max.5.5 W
Serial Interfaces
MainRS232, RS485 full-duplex, RS485 half-duplex
(20 mA C.L. only with INT-24 accessory )
AuxiliaryRS232
Baud rates
1200 to 115200
Inputs
Voltage max.30 Vdc
Input current m ax.25 mA
Outputs
(optocoupled open emit ter, open collector)
V
max.40 Vdc
CE
Collector current max.40 mA continuous; 130 mA puls ed
VCE saturation1V at 10 mA max.