4 Basic Function Principles.......................................................................................................................19
5 Mounting and wiring................................................................................................................................21
5.1Instructions for ESD protection........................................................................................................21
5.2Installation on mounting rails ...........................................................................................................21
5.3Installation instructions for enhanced mechanical load capacity .....................................................24
8.1Support and Service ........................................................................................................................57
KL3444, KL3448, KL3454 und KL34584Version: 3.2.0
Foreword
1Foreword
1.1Notes on the documentation
Intended audience
This description is only intended for the use of trained specialists in control and automation engineering who
are familiar with the applicable national standards.
It is essential that the documentation and the following notes and explanations are followed when installing
and commissioning these components.
It is the duty of the technical personnel to use the documentation published at the respective time of each
installation and commissioning.
The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.
Disclaimer
The documentation has been prepared with care. The products described are, however, constantly under
development.
We reserve the right to revise and change the documentation at any time and without prior announcement.
No claims for the modification of products that have already been supplied may be made on the basis of the
data, diagrams and descriptions in this documentation.
Trademarks
Beckhoff®, TwinCAT®, EtherCAT®, EtherCATG®, EtherCATG10®, EtherCATP®, SafetyoverEtherCAT®,
TwinSAFE®, XFC®, XTS® and XPlanar® are registered trademarks of and licensed by Beckhoff Automation
GmbH. Other designations used in this publication may be trademarks whose use by third parties for their
own purposes could violate the rights of the owners.
Patent Pending
The EtherCAT Technology is covered, including but not limited to the following patent applications and
patents: EP1590927, EP1789857, EP1456722, EP2137893, DE102015105702 with corresponding
applications or registrations in various other countries.
EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH,
Germany.
Please note the following safety instructions and explanations!
Product-specific safety instructions can be found on following pages or in the areas mounting, wiring,
commissioning etc.
Exclusion of liability
All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.
Personnel qualification
This description is only intended for trained specialists in control, automation and drive engineering who are
familiar with the applicable national standards.
Description of instructions
In this documentation the following instructions are used.
These instructions must be read carefully and followed without fail!
DANGER
Serious risk of injury!
Failure to follow this safety instruction directly endangers the life and health of persons.
WARNING
Risk of injury!
Failure to follow this safety instruction endangers the life and health of persons.
CAUTION
Personal injuries!
Failure to follow this safety instruction can lead to injuries to persons.
NOTE
Damage to environment/equipment or data loss
Failure to follow this instruction can lead to environmental damage, equipment damage or data loss.
Tip or pointer
This symbol indicates information that contributes to better understanding.
KL3444, KL3448, KL3454 und KL34586Version: 3.2.0
1.3Documentation Issue Status
VersionComment
3.2.0• Update chapter “Instructions for ESD protection”
The firmware and hardware versions (delivery state) can be found in the serial number printed on the side of
the terminal.
Syntax of the serial number
Structure of the serial number: WWYYFFHH
WW - week of production (calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Example with ser. no.: 35 04 1B 01:
KL3444, KL3448, KL3454 und KL34587Version: 3.2.0
Foreword
35 - week of production 35
04 - year of production 2004
1B - firmware version 1B
01 - hardware version 01
1.4Beckhoff Identification Code (BIC)
The Beckhoff Identification Code (BIC) is increasingly being applied to Beckhoff products to uniquely identify
the product. The BIC is represented as a Data Matrix Code (DMC, code scheme ECC200), the content is
based on the ANSI standard MH10.8.2-2016.
Fig.1: BIC as data matrix code (DMC, code scheme ECC200)
The BIC will be introduced step by step across all product groups.
Depending on the product, it can be found in the following places:
• on the packaging unit
• directly on the product (if space suffices)
• on the packaging unit and the product
The BIC is machine-readable and contains information that can also be used by the customer for handling
and product management.
Each piece of information can be uniquely identified using the so-called data identifier
(ANSIMH10.8.2-2016). The data identifier is followed by a character string. Both together have a maximum
length according to the table below. If the information is shorter, spaces are added to it. The data under
positions 1 to 4 are always available.
The following information is contained:
KL3444, KL3448, KL3454 und KL34588Version: 3.2.0
Item
Type of
no.
information
1Beckhoff order
number
2Beckhoff Traceability
Number (BTN)
3Article descriptionBeckhoff article
4QuantityQuantity in packaging
5Batch numberOptional: Year and week
6ID/serial numberOptional: Present-day
7Variant numberOptional: Product variant
...
ExplanationData
Beckhoff order number 1P81P072222
Unique serial number,
see note below
description, e.g.
EL1008
unit, e.g. 1, 10, etc.
of production
serial number system,
e.g. with safety products
number on the basis of
standard products
Foreword
Number of digits
identifier
S12SBTNk4p562d7
1K321KEL1809
Q6Q1
2P142P401503180016
51S1251S678294104
30P3230PF971, 2*K183
incl. data identifier
Example
Further types of information and data identifiers are used by Beckhoff and serve internal processes.
Structure of the BIC
Example of composite information from item 1 to 4 and 6. The data identifiers are marked in red for better
display:
BTN
An important component of the BIC is the Beckhoff Traceability Number (BTN, item no.2). The BTN is a
unique serial number consisting of eight characters that will replace all other serial number systems at
Beckhoff in the long term (e.g. batch designations on IO components, previous serial number range for
safety products, etc.). The BTN will also be introduced step by step, so it may happen that the BTN is not yet
coded in the BIC.
NOTE
This information has been carefully prepared. However, the procedure described is constantly being further
developed. We reserve the right to revise and change procedures and documentation at any time and without prior notice. No claims for changes can be made from the information, illustrations and descriptions in
this information.
KL3444, KL3448, KL3454 und KL34589Version: 3.2.0
KL3444, KL3454 - Product Overview
2KL3444, KL3454 - Product Overview
2.1Introduction
KL3444: 4-channel analog input terminal 0 ... 20mA
Fig.2: KL3444
The EL3444 analog input terminal process signals in the range between 0 and 20mA. The current is
digitized to a resolution of 12bits, and is transmitted, in an electrically isolated form, to the higher-level
automation device.
In the KL3444 Bus Terminal, the four inputs are 2-wire versions and have a common ground potential. This
reference ground of the inputs is electrically isolated from the 0V power contact. The power contacts are
connected through.
Overload is detected and the terminal status is forwarded to the controller via the K-bus. The Run LEDs
indicate the data exchange with the Bus Coupler, while the Error LEDs indicate overload.
KL3444, KL3448, KL3454 und KL345810Version: 3.2.0
KL3454: 4-channel analog input terminal 4 ... 20mA
KL3444, KL3454 - Product Overview
Fig.3: KL3454
The EL3454 analog input terminal process signals in the range between 4 and 20mA. The current is
digitized to a resolution of 12bits, and is transmitted, in an electrically isolated form, to the higher-level
automation device.
In the KL3454 Bus Terminal, the four inputs are 2-wire versions and have a common ground potential. This
reference ground of the inputs is connected to the 0V power contact. The 24V power contact is connected
to the terminals, in order to enable the connection of 2-wire sensors without external supply. The power
contacts are connected through.
Overload is detected and the terminal status is forwarded to the controller via the K-bus. The Run LEDs
indicate the data exchange with the Bus Coupler, while the Error LEDs indicate overload.
The four green RUN LEDs and the four red Error LEDs indicate the operating states of the terminal
channels.
Fig.4: KL3444, KL3454 - Diagnostic LEDs
Meaning of the LED displays
LEDColorChannel State
onoff
Run1green1normal operationA watchdog timer overflow has occurred. The
Run22
Run33
Run44
Error1red1Channel current
Error22
Error33
Error44
greater than 20.8mA
green LEDs go out if no process data are
transferred between the controller and the Bus
Coupler for more than 100ms.
normal operation
KL3444, KL3448, KL3454 und KL345813Version: 3.2.0
KL3448, KL3458 - Product Overview
3KL3448, KL3458 - Product Overview
3.1Introduction
KL3448: 8-channel analog input terminal 0 ... 20mA
Fig.5: KL3448
The EL3448 analog input terminal process signals in the range between 0 and 20mA. The current is
digitized to a resolution of 12bits, and is transmitted, in an electrically isolated form, to the higher-level
automation device.
The KL3448 variant combines 8 channels in one housing and is particularly suitable for space-saving
installation in control cabinets. The use of single conductor connection technology enables the connection of
multi-channel sensor technology with minimum space requirements. In the KL3448, the power contacts of
are connected through. The reference ground for all inputs is the 0V power contact.
Overload is detected and the terminal status is forwarded to the controller via the K-bus. The Run LEDs give
an indication of the data exchange with the Bus Coupler.
KL3444, KL3448, KL3454 und KL345814Version: 3.2.0
KL3458: 8-channel analog input terminal 4 ... 20mA
KL3448, KL3458 - Product Overview
Fig.6: KL3458
The EL3458 analog input terminal process signals in the range between 4 and 20mA. The current is
digitized to a resolution of 12bits, and is transmitted, in an electrically isolated form, to the higher-level
automation device.
The KL3458 variant combines 8 channels in one housing and is particularly suitable for space-saving
installation in control cabinets. The use of single conductor connection technology enables the connection of
multi-channel sensor technology with minimum space requirements. In the KL3458, the power contacts of
are connected through. The reference ground for all inputs is the 0V power contact.
Overload is detected and the terminal status is forwarded to the controller via the K-bus. The Error LEDs
indicate overload and wire breakage.
Measuring error (total measuring range)< ±0.3% of the full scale value
Surge voltage resistance30V
Electrical isolation500V (K-Bus/signal voltage)
Power supply for the electronicsvia the K-bus
Current consumption from the K-bustypically 105mA
Bit width in process imageInput: 8 x 16bit user data, 8 x 8bit control/status (optional)
Weightapprox. 55g
Dimensions (W x H x D)approx. 15mmx100mmx70mm
Assemblyon 35mm mounting rail conforms to EN60715
Pluggable wiringfor all KSxxxx terminals
Permissible ambient temperature range
during operation
Permissible ambient temperature range
during storage
Permissible relative air humidity95%, no condensation
Vibration/shock resistanceconforms to EN60068-2-6/EN60068-2-27, see also
EMC immunity/emissionconforms to EN61000-6-2/ EN61000-6-4
Protection classIP20
Installation positionvariable
Approval
max. 30Vmax. 30V
DC
0°C ... + 55°C
-25°C ... + 85°C
Installation instructions for enhanced mechanical load capacity
[}24]
CE, cULus, ATEX [}31], GL
KL3444, KL3448, KL3454 und KL345816Version: 3.2.0
KL3448, KL3458 - Product Overview
3.3KL3448 - Diagnostic LEDs
The eight green Run LEDs indicate the operating states of the terminal channels.
Fig.7: KL3448 - Diagnostic LEDs
Meaning of the LED displays
LEDColorChannelState
onoff
Run1green1normal operationA watchdog timer overflow has
Run22
Run33
Run44
Run55
Run66
Run77
Run88
occurred. The green LEDs go out if
no process data are transferred
between the controller and the Bus
Coupler for more than 100ms.
KL3444, KL3448, KL3454 und KL345817Version: 3.2.0
KL3448, KL3458 - Product Overview
3.4KL3458 - Diagnostic LEDs
The eight red Error LEDs indicate the operating states of the terminal channels.
Fig.8: KL3458 - Diagnostic LEDs
Meaning of the LED displays
LEDColorChannelState
onoff
Error1red1Channel current greater than
Error22
Error33
Error44
Error51
Error62
Error73
Error84
20.8mA
normal operation
KL3444, KL3448, KL3454 und KL345818Version: 3.2.0
Basic Function Principles
4Basic Function Principles
The analog input terminals
• KL3444 and KL3448 process signals in the range between 0 and 20mA
• KL3454 and KL3458 process signals in the range between 4 and 20mA
with a resolution of 12bits (4095 steps). They can supply the sensors from voltage fed in via the power
contacts. The power contacts can optionally be supplied via the standard supply or via a power feed terminal
with electrical isolation.
Process data output format
In the delivery state the process data are shown in two's complement form (integer -1 corresponds to
0xFFFF). Other presentation types can be selected via the feature register R32 (e.g. signed amount
representation, Siemens output format).
Measured valueInput data
KL3444, KL3448KL3454, KL3458decimalhexadecimal
0mA4mA00x0000
10mA12mA163830x3FFF
20mA20mA327670x7FFF
Process data equations
The process data that are transferred to the Bus Coupler are calculated using the following equations:
Neither user nor manufacturer scaling is active
Ya = (Ba + X
Y
= Y
out
a
ADC
) x A
a
(1.0)
Manufacturer scaling active (default setting)
Y1 = Bh + Ah x Y
Y
= Y
out
1
a
(1.1)
User scaling active
Y2 = Bw + Aw x Y
Y
= Y
out
2
a
(1.2)
Manufacturer and user scaling active
Y1 = Bh + Ah x Y
Y2 = Bw + Aw x Y
Y
= Y
out
2
a
1
(1.3)
(1.4)
Key
X
:Output values of the A/D converter
ADC
Y
:Process data to PLC
out
Ba,Aa:Manufacturer gain and offset
compensation
Bh,Ah:Manufacturer scaling
Bw, Aw:User scaling
KL3444, KL3448, KL3454 und KL345819Version: 3.2.0
(R17 [}51], R18 [}51])
(R19 [}51], R20 [}51])
(R33 [}53], R34 [}53])
Basic Function Principles
The equations of the straight line are enabled via register R32.
Fig.9: Signal processing
KL3444, KL3448, KL3454 und KL345820Version: 3.2.0
Mounting and wiring
5Mounting and wiring
5.1Instructions for ESD protection
NOTE
Destruction of the devices by electrostatic discharge possible!
The devices contain components at risk from electrostatic discharge caused by improper handling.
• Please ensure you are electrostatically discharged and avoid touching the contacts of the device directly.
• Avoid contact with highly insulating materials (synthetic fibers, plastic film etc.).
• Surroundings (working place, packaging and personnel) should by grounded probably, when handling
with the devices.
• Each assembly must be terminated at the right hand end with a KL9010 bus end terminal, to ensure the
protection class and ESD protection.
Fig.10: Spring contacts of the Beckhoff I/O components
5.2Installation on mounting rails
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation, disassembly or
wiring of the bus terminals!
KL3444, KL3448, KL3454 und KL345821Version: 3.2.0
Mounting and wiring
Assembly
Fig.11: Attaching on mounting rail
The bus coupler and bus terminals are attached to commercially available 35mm mounting rails (DIN rails
according to EN60715) by applying slight pressure:
1. First attach the fieldbus coupler to the mounting rail.
2. The bus terminals are now attached on the right-hand side of the fieldbus coupler. Join the components with tongue and groove and push the terminals against the mounting rail, until the lock clicks
onto the mounting rail.
If the terminals are clipped onto the mounting rail first and then pushed together without tongue and
groove, the connection will not be operational! When correctly assembled, no significant gap should
be visible between the housings.
Fixing of mounting rails
The locking mechanism of the terminals and couplers extends to the profile of the mounting rail. At
the installation, the locking mechanism of the components must not come into conflict with the fixing
bolts of the mounting rail. To mount the mounting rails with a height of 7.5mm under the terminals
and couplers, you should use flat mounting connections (e.g. countersunk screws or blind rivets).
KL3444, KL3448, KL3454 und KL345822Version: 3.2.0
Mounting and wiring
Disassembly
Fig.12: Disassembling of terminal
Each terminal is secured by a lock on the mounting rail, which must be released for disassembly:
1. Pull the terminal by its orange-colored lugs approximately 1cm away from the mounting rail. In doing
so for this terminal the mounting rail lock is released automatically and you can pull the terminal out of
the bus terminal block easily without excessive force.
2. Grasp the released terminal with thumb and index finger simultaneous at the upper and lower grooved
housing surfaces and pull the terminal out of the bus terminal block.
Connections within a bus terminal block
The electric connections between the Bus Coupler and the Bus Terminals are automatically realized by
joining the components:
• The six spring contacts of the K-Bus/E-Bus deal with the transfer of the data and the supply of the Bus
Terminal electronics.
• The power contacts deal with the supply for the field electronics and thus represent a supply rail within
the bus terminal block. The power contacts are supplied via terminals on the Bus Coupler (up to 24V)
or for higher voltages via power feed terminals.
Power Contacts
During the design of a bus terminal block, the pin assignment of the individual Bus Terminals must
be taken account of, since some types (e.g. analog Bus Terminals or digital 4-channel Bus Terminals) do not or not fully loop through the power contacts. Power Feed Terminals (KL91xx, KL92xx
or EL91xx, EL92xx) interrupt the power contacts and thus represent the start of a new supply rail.
PE power contact
The power contact labeled PE can be used as a protective earth. For safety reasons this contact mates first
when plugging together, and can ground short-circuit currents of up to 125A.
KL3444, KL3448, KL3454 und KL345823Version: 3.2.0
Mounting and wiring
Fig.13: Power contact on left side
NOTE
Possible damage of the device
Note that, for reasons of electromagnetic compatibility, the PE contacts are capacitatively coupled to the
mounting rail. This may lead to incorrect results during insulation testing or to damage on the terminal (e.g.
disruptive discharge to the PE line during insulation testing of a consumer with a nominal voltage of 230V).
For insulation testing, disconnect the PE supply line at the Bus Coupler or the Power Feed Terminal! In order to decouple further feed points for testing, these Power Feed Terminals can be released and pulled at
least 10mm from the group of terminals.
WARNING
Risk of electric shock!
The PE power contact must not be used for other potentials!
5.3Installation instructions for enhanced mechanical load
capacity
WARNING
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminal system into a safe, de-energized state before starting mounting, disassembly or
wiring of the Bus Terminals!
Additional checks
The terminals have undergone the following additional tests:
VerificationExplanation
Vibration10 frequency runs in 3 axes
6 Hz < f < 60 Hz displacement 0.35 mm, constant amplitude
For terminals with enhanced mechanical load capacity, the following additional installation instructions apply:
• The enhanced mechanical load capacity is valid for all permissible installation positions
• Use a mounting rail according to EN 60715 TH35-15
• Fix the terminal segment on both sides of the mounting rail with a mechanical fixture, e.g. an earth
terminal or reinforced end clamp
• The maximum total extension of the terminal segment (without coupler) is:
64 terminals (12 mm mounting with) or 32 terminals (24 mm mounting with)
• Avoid deformation, twisting, crushing and bending of the mounting rail during edging and installation of
the rail
• The mounting points of the mounting rail must be set at 5 cm intervals
• Use countersunk head screws to fasten the mounting rail
• The free length between the strain relief and the wire connection should be kept as short as possible. A
distance of approx. 10 cm should be maintained to the cable duct.
5.4Connection
5.4.1Connection system
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation, disassembly or
wiring of the bus terminals!
Overview
The Bus Terminal system offers different connection options for optimum adaptation to the respective
application:
• The terminals of ELxxxx and KLxxxx series with standard wiring include electronics and connection
level in a single enclosure.
• The terminals of ESxxxx and KSxxxx series feature a pluggable connection level and enable steady
wiring while replacing.
• The High Density Terminals (HD Terminals) include electronics and connection level in a single
enclosure and have advanced packaging density.
Standard wiring (ELxxxx / KLxxxx)
Fig.14: Standard wiring
The terminals of ELxxxx and KLxxxx series have been tried and tested for years.
They feature integrated screwless spring force technology for fast and simple assembly.
KL3444, KL3448, KL3454 und KL345825Version: 3.2.0
Mounting and wiring
Pluggable wiring (ESxxxx / KSxxxx)
Fig.15: Pluggable wiring
The terminals of ESxxxx and KSxxxx series feature a pluggable connection level.
The assembly and wiring procedure is the same as for the ELxxxx and KLxxxx series.
The pluggable connection level enables the complete wiring to be removed as a plug connector from the top
of the housing for servicing.
The lower section can be removed from the terminal block by pulling the unlocking tab.
Insert the new component and plug in the connector with the wiring. This reduces the installation time and
eliminates the risk of wires being mixed up.
The familiar dimensions of the terminal only had to be changed slightly. The new connector adds about 3
mm. The maximum height of the terminal remains unchanged.
A tab for strain relief of the cable simplifies assembly in many applications and prevents tangling of individual
connection wires when the connector is removed.
Conductor cross sections between 0.08mm2 and 2.5mm2 can continue to be used with the proven spring
force technology.
The overview and nomenclature of the product names for ESxxxx and KSxxxx series has been retained as
known from ELxxxx and KLxxxx series.
High Density Terminals (HD Terminals)
Fig.16: High Density Terminals
The Bus Terminals from these series with 16 terminal points are distinguished by a particularly compact
design, as the packaging density is twice as large as that of the standard 12mm Bus Terminals. Massive
conductors and conductors with a wire end sleeve can be inserted directly into the spring loaded terminal
point without tools.
Wiring HD Terminals
The High Density (HD) Terminals of the ELx8xx and KLx8xx series doesn't support pluggable
wiring.
It is also possible to connect the Standard and High Density Terminals with ultrasonically
"bonded" (ultrasonically welded) conductors. In this case, please note the tables concerning the
wire-size width below!
KL3444, KL3448, KL3454 und KL345826Version: 3.2.0
Mounting and wiring
5.4.2Wiring
WARNING
Risk of electric shock and damage of device!
Bring the bus terminal system into a safe, powered down state before starting installation, disassembly or
wiring of the Bus Terminals!
Terminals for standard wiring ELxxxx/KLxxxx and for pluggable wiring ESxxxx/KSxxxx
Fig.17: Connecting a cable on a terminal point
Up to eight terminal points enable the connection of solid or finely stranded cables to the Bus Terminal. The
terminal points are implemented in spring force technology. Connect the cables as follows:
1. Open a terminal point by pushing a screwdriver straight against the stop into the square opening
above the terminal point. Do not turn the screwdriver or move it alternately (don't toggle).
2. The wire can now be inserted into the round terminal opening without any force.
3. The terminal point closes automatically when the pressure is released, holding the wire securely and
permanently.
See the following table for the suitable wire size width.
Wire size width (conductors with a wire end sleeve)0.14 ... 1.5mm
2
2
2
0.08 ... 2.5mm
0,08 ... 2.5mm
0.14 ... 1.5mm
2
2
2
Wire stripping length8 ... 9mm9 ... 10mm
High Density Terminals (HD Terminals [}26]) with 16 terminal points
The conductors of the HD Terminals are connected without tools for single-wire conductors using the direct
plug-in technique, i.e. after stripping the wire is simply plugged into the terminal point. The cables are
released, as usual, using the contact release with the aid of a screwdriver. See the following table for the
suitable wire size width.
Wire size width (conductors with a wire end sleeve)0.14 ... 0.75mm
Wire size width (ultrasonically “bonded" conductors) only 1.5mm
2
2
2
2
Wire stripping length8 ... 9mm
5.4.3Shielding
Shielding
Encoder, analog sensors and actors should always be connected with shielded, twisted paired
wires.
5.4.4KL3444 - Connection
Fig.18: KL3444 - Connection
Terminal point no.ChannelNameConnection for
11Input 1Input 1, signal
2GNDInput 1, ground
33Input 3Input 3, signal
4GNDInput 3, ground
52Input 2Input 2, signal
6GNDInput 2, ground
74Input 4Input 4, signal
8GNDInput 4, ground
KL3444, KL3448, KL3454 und KL345828Version: 3.2.0
5.4.5KL3454 - Connection
Mounting and wiring
Fig.19: KL3454 - Connection
Terminal point no.ChannelNameConnection for
11Input 1Input 1, signal
2+ 24VInput 1, 24V
33Input 3Input 3, signal
4+ 24VInput 3, 24V
52Input 2Input 2, signal
6+ 24VInput 2, 24V
74Input 4Input 4, signal
8+ 24VInput 4, 24V
KL3444, KL3448, KL3454 und KL345829Version: 3.2.0
Mounting and wiring
5.4.6KL3448, KL3458 - Connection
Fig.20: KL3448, KL3458 - Connection
Terminal point no.ChannelNameConnection for
11Input 1Input 1, signal
23Input 3Input 3, signal
35Input 5Input 5, signal
47Input 7Input 7, signal
52Input 2Input 2, signal
64Input 4Input 4, signal
76Input 6Input 6, signal
88Input 8Input 8, signal
KL3444, KL3448, KL3454 und KL345830Version: 3.2.0
Mounting and wiring
5.5ATEX - Special conditions (standard temperature
range)
WARNING
Observe the special conditions for the intended use of Beckhoff fieldbus components with
standard temperature range in potentially explosive areas (directive 2014/34/EU)!
• The certified components are to be installed in a suitable housing that guarantees a protection class of at
least IP54 in accordance with EN60079-15! The environmental conditions during use are thereby to be
taken into account!
• If the temperatures during rated operation are higher than 70°C at the feed-in points of cables, lines or
pipes, or higher than 80°C at the wire branching points, then cables must be selected whose temperature data correspond to the actual measured temperature values!
• Observe the permissible ambient temperature range of 0 to 55°C for the use of Beckhoff fieldbus components standard temperature range in potentially explosive areas!
• Measures must be taken to protect against the rated operating voltage being exceeded by more than
40% due to short-term interference voltages!
• The individual terminals may only be unplugged or removed from the Bus Terminal system if the supply
voltage has been switched off or if a non-explosive atmosphere is ensured!
• The connections of the certified components may only be connected or disconnected if the supply voltage has been switched off or if a non-explosive atmosphere is ensured!
• The fuses of the KL92xx/EL92xx power feed terminals may only be exchanged if the supply voltage has
been switched off or if a non-explosive atmosphere is ensured!
• Address selectors and ID switches may only be adjusted if the supply voltage has been switched off or if
a non-explosive atmosphere is ensured!
Standards
The fundamental health and safety requirements are fulfilled by compliance with the following standards:
• EN 60079-0:2012+A11:2013
• EN 60079-15:2010
Marking
The Beckhoff fieldbus components with standard temperature range certified according to the ATEX directive
for potentially explosive areas bear one of the following markings:
II 3GKEMA 10ATEX0075 X Ex nA IIC T4 GcTa: 0…+55°C
or
II 3GKEMA 10ATEX0075 X Ex nC IIC T4 GcTa: 0…+55°C
KL3444, KL3448, KL3454 und KL345831Version: 3.2.0
Mounting and wiring
5.6ATEX - Special conditions (extended temperature
range)
WARNING
Observe the special conditions for the intended use of Beckhoff fieldbus components with
extended temperature range (ET) in potentially explosive areas (directive 2014/34/EU)!
• The certified components are to be installed in a suitable housing that guarantees a protection class of at
least IP54 in accordance with EN60079-15! The environmental conditions during use are thereby to be
taken into account!
• If the temperatures during rated operation are higher than 70°C at the feed-in points of cables, lines or
pipes, or higher than 80°C at the wire branching points, then cables must be selected whose temperature data correspond to the actual measured temperature values!
• Observe the permissible ambient temperature range of -25 to 60°C for the use of Beckhoff fieldbus components with extended temperature range (ET) in potentially explosive areas!
• Measures must be taken to protect against the rated operating voltage being exceeded by more than
40% due to short-term interference voltages!
• The individual terminals may only be unplugged or removed from the Bus Terminal system if the supply
voltage has been switched off or if a non-explosive atmosphere is ensured!
• The connections of the certified components may only be connected or disconnected if the supply voltage has been switched off or if a non-explosive atmosphere is ensured!
• The fuses of the KL92xx/EL92xx power feed terminals may only be exchanged if the supply voltage has
been switched off or if a non-explosive atmosphere is ensured!
• Address selectors and ID switches may only be adjusted if the supply voltage has been switched off or if
a non-explosive atmosphere is ensured!
Standards
The fundamental health and safety requirements are fulfilled by compliance with the following standards:
• EN 60079-0:2012+A11:2013
• EN 60079-15:2010
Marking
The Beckhoff fieldbus components with extended temperature range (ET) certified according to the ATEX
directive for potentially explosive areas bear the following marking:
II 3GKEMA 10ATEX0075 X Ex nA IIC T4 GcTa: -25…+60°C
or
II 3GKEMA 10ATEX0075 X Ex nC IIC T4 GcTa: -25…+60°C
KL3444, KL3448, KL3454 und KL345832Version: 3.2.0
5.7ATEX Documentation
Notes about operation of the Beckhoff terminal systems in potentially explosive areas (ATEX)
Pay also attention to the continuative documentation
Notes about operation of the Beckhoff terminal systems in potentially explosive areas (ATEX)
that is available in the download area of the Beckhoff homepage http:\\www.beckhoff.com!
Mounting and wiring
KL3444, KL3448, KL3454 und KL345833Version: 3.2.0
KS2000 Configuration Software
6KS2000 Configuration Software
6.1KS2000 - Introduction
The KS2000 configuration software permits configuration, commissioning and parameterization of bus
couplers, of the affiliated bus terminals and of Fieldbus Box Modules. The connection between bus coupler/
Fieldbus Box Module and the PC is established by means of the serial configuration cable or the fieldbus.
Fig.21: KS2000 configuration software
Configuration
You can configure the Fieldbus stations with the Configuration Software KS2000 offline. That means, setting
up a terminal station with all settings on the couplers and terminals resp. the Fieldbus Box Modules can be
prepared before the commissioning phase. Later on, this configuration can be transferred to the terminal
station in the commissioning phase by means of a download. For documentation purposes, you are provided
with the breakdown of the terminal station, a parts list of modules used and a list of the parameters you have
modified. After an upload, existing fieldbus stations are at your disposal for further editing.
Parameterization
KS2000 offers simple access to the parameters of a fieldbus station: specific high-level dialogs are available
for all bus couplers, all intelligent bus terminals and Fieldbus Box modules with the aid of which settings can
be modified easily. Alternatively, you have full access to all internal registers of the bus couplers and
intelligent terminals. Refer to the register description for the meanings of the registers.
KL3444, KL3448, KL3454 und KL345834Version: 3.2.0
KS2000 Configuration Software
Commissioning
The KS2000 software facilitates commissioning of machine components or their fieldbus stations: Configured
settings can be transferred to the fieldbus modules by means of a download. After a login to the terminal
station, it is possible to define settings in couplers, terminals and Fieldbus Box modules directly online. The
same high-level dialogs and register access are available for this purpose as in the configuration phase.
The KS2000 offers access to the process images of the bus couplers and Fieldbus Box modules.
• Thus, the coupler's input and output images can be observed by monitoring.
• Process values can be specified in the output image for commissioning of the output modules.
All possibilities in the online mode can be used in parallel with the actual fieldbus mode of the terminal
station. The fieldbus protocol always has the higher priority in this case.
KL3444, KL3448, KL3454 und KL345835Version: 3.2.0
KS2000 Configuration Software
6.2Parameterization with KS2000
Connect the configuration interface of your Fieldbus Coupler with the serial interface of your PC via the
configuration cable and start the KS2000 Configuration Software.
Click on the Login button. The configuration software will now load the information for
the connected fieldbus station.
In the example shown, this is
• a BK9000 Bus Coupler for Ethernet
• a KL1xx2 Digital Input Terminal
• a KL3444 Analog Input Terminal
• a KL9010 Bus End Terminal
Fig.22: Display of the fieldbus station in KS2000
The left-hand KS2000 window displays the terminals of the fieldbus station in a tree structure.
The right-hand KS2000window contains a graphic display of the fieldbus station terminals.
In the tree structure of the left-hand window, click on the plus-sign next to the terminal whose parameters
you wish to change (item 2 in the example).
KL3444, KL3448, KL3454 und KL345836Version: 3.2.0
KS2000 Configuration Software
Fig.23: KS2000 tree branch for channel 1 of the KL3444
For the KL3404, the branches Register, Settings and ProcData are displayed:
• Register [}39] enables direct access to the KL3444 registers.
• Dialog masks for the parameterization of the KL3444 can be found under Settings [}37].
• ProcData displays the KL3444 process data (in preparation).
6.3Settings
The dialog mask for the parameterization of the KL3444, KL3448, KL3454 or KL3458 can be found under
Settings.
Fig.24: Settings via KS2000
Operation mode
• User scaling active (R32.0 [}52])
You can activate user scaling here (default: disabled).
• Manufacturer scaling active (R32.1 [}52])
You can deactivate manufacturer scaling here (default: enabled).
KL3444, KL3448, KL3454 und KL345837Version: 3.2.0
KS2000 Configuration Software
• Watchdog timer active (R32.2 [}52])
You can deactivate the watchdog timer here (default: enabled).
• Signed amount representation (R32.3 [}52])
Here you can enable the signed amount representation (default: disabled).
• Siemens output format (R32.4 [}52])
You can activate Siemens output format here (default: disabled).
• Overrange protection active (R32.8 [}52])
You can deactivate the overrange protection here (default: enabled).
• Threshold 1 active (R32.9 [}52])
You can activate the threshold 1 here (default: disabled).
• Threshold 2 active (R32.10 [}52])
You can activate the threshold 2 here (default: disabled).
• IIR filter active (R32.11 [}52])
You can deactivate the digital IIR filter (first order) here (default: enabled).
Register values
• User offset (R33 [}53])
You can specify the user offset here.
• User gain (R34 [}53])
You can specify the user gain here.
• Threshold 1 (R35 [}53])
You can specify threshold 1 here.
• Threshold 2 (R36 [}53])
You can specify threshold 2 here.
• IIR filter cut-off frequency (R37 [}53])
You can specify the cut-off frequency for the digital IIR filter here.
◦ KL3444, KL3454: default 200Hz
◦ KL3448, KL3458: default 100Hz
KL3444, KL3448, KL3454 und KL345838Version: 3.2.0
KS2000 Configuration Software
6.4Register
Under Register you can directly access the Registers of the KL3444 or KL3454. The meaning of the register
is explained in the Register Overview [}49].
Fig.25: Register view in KS2000
KL3444, KL3448, KL3454 und KL345839Version: 3.2.0
KS2000 Configuration Software
6.5Sample program for KL register communication via
EtherCAT on KL3314 exemplary
Using the sample programs
This document contains sample applications of our products for certain areas of application. The
application notes provided here are based on typical features of our products and only serve as examples. The notes contained in this document explicitly do not refer to specific applications. The
customer is therefore responsible for assessing and deciding whether the product is suitable for a
particular application. We accept no responsibility for the completeness and correctness of the
source code contained in this document. We reserve the right to modify the content of this document at any time and accept no responsibility for errors and missing information.
Program description / function
This example program (TwinCAT 3) provides change of single register values of the KL3314 as selection of
the element type, characteristical settings of the feature register R32 and user scaling offset and gain (R33/
R34) similar as per KS2000.
Fig.26: Settings of KL3314 via visualisation of TwinCAT 3
At least following configuration setup shall be present:
[coupler (e.g. BK1120) or embedded PC] + KL3314 + KL9010.
Preparations for starting the sample programs (tnzip file / TwinCAT 3)
• Click on the download button to save the Zip archive locally on your hard disk, then unzip the *.tnzip
archive file in a temporary folder.
Fig.27: Opening the *. tnzip archive
• Select the .tnzip file (sample program).
• A further selection window opens. Select the destination directory for storing the project.
• For a description of the general PLC commissioning procedure and starting the program please refer to
the terminal documentation or the EtherCAT system documentation.
• The EtherCAT device of the example should usually be declared your present system. After selection
of the EtherCAT device in the “Solutionexplorer” select the “Adapter” tab and click on “Search...”:
Fig.28: Search of the existing HW configuration for the EtherCAT configuration of the example
• Checking NetId: the "EtherCAT" tab of the EtherCAT device shows the configured NetId:
.
The first 4 numbers have to be identical with the project NetId of the target system. The project NetId
can be viewed within the TwinCAT environment above, where a pull down menu can be opened to
choose a target system (by clicking right in the text field). The number blocks are placed in brackets
there next to each computer name of a target system.
KL3444, KL3448, KL3454 und KL345841Version: 3.2.0
KS2000 Configuration Software
• Modify the NetId: By right clicking on "EtherCAT device" within the solution explorer a context menu
opens where "Change NetId..." have to be selected. The first 4 numbers of the NetId of the target
computer have to be entered; the both last values are 4.1 usually.
Example:
◦ NetId of project:myComputer (123.45.67.89.1.1)
◦ Entry via „Change NetId...“:123.45.67.89.4.1
KL3444, KL3448, KL3454 und KL345842Version: 3.2.0
Access from the User Program
7Access from the User Program
7.1Process image
KL3404 and KL3464 as well as KL3444 and KL3454
KL3404 and KL3464 as well as KL3444 and KL3454 represent themselves in the process image with up to
12 bytes of input data and 12 bytes of output data.
FormatInput dataOutput data
ByteSB1:CB1
WordDataIN1DataOUT1
ByteSB2CB2
WordDataIN2DataOUT2
ByteSB3CB3
WordDataIN3DataOUT3
ByteSB4CB4
WordDataIN4DataOUT4
Key
SBn: Status byte for channel n
CBn: Control byte for channel n
DataIN n: Input data word channel n
DataOUT n: Output data word channel n
• Please refer to the Mapping [}44] page for the assignment of the bytes and words to the addresses
of the controller.
• The meaning of the control and status bytes is explained in Control and status bytes.
• In process data mode the analog values are transferred in input data words DataIN1 to DataIN4.
Output data words DataOUT1 to DataOUT4 are not used.
KL3408 and KL3468 as well as KL3448 and KL3458
KL3408 and KL3468 as well as KL3448 and KL3458 represent a special case with regard to the process
image:
Essentially, two four-channel terminals are accommodated in one terminal housing, which behave like two
terminals for the K-bus.
Each of these eight channel analog terminals has the same process image like two four channel terminals of
same signal type, plugged next to each other. The KS2000 configuration software and the TwinCAT System
Manager display them like two separate four channel analog terminals.
Special treatment for 8-channel analog terminals
Regarding K-bus diagnosis for your Bus Coupler (e.g. for flashing codes, error code and error argument), note that these eight channel analog terminals are represented as two four channel terminals
from a Bus Coupler perspective. If the Bus Coupler is the fault location in the event of an error, you
must count each eight channel analog terminal as two terminals!
KL3444, KL3448, KL3454 und KL345843Version: 3.2.0
Access from the User Program
7.2Mapping
The Bus Terminals occupy addresses within the process image of the controller. The assignment of process
data (input and output data) and parameterization data (control and status bytes) to the control addresses is
called mapping. The type of mapping depends on:
• the fieldbus system used
• the terminal type
• the parameterization of the Bus Coupler (conditions) such as
◦ compact or full evaluation
◦ Intel or Motorola format
◦ word alignment switched on or off
The Bus Couplers (BKxxxx, LCxxxx) and Bus TerminalControllers (BCxxxx, BXxxxx) are supplied with
certain default settings. The default setting can be changed with the KS2000 configuration software or with a
master configuration software (e.g.TwinCAT System Manager or ComProfibus).
The following tables show the mapping depending on different conditions. For information about the contents
of the individual bytes please refer to the pages Process image and Control and status byte.
Compact evaluation
For compact evaluation, the analog input terminals only occupy addresses in the input process image.
Control and status bytes cannot be accessed.
Compact evaluation in Intel format
Default mapping for CANopen, CANCAL, DeviceNet, ControlNet, Modbus, RS232 and RS485 coupler
Complete evaluation: In addition to the process data, the control and status bytes are also mapped into the
address space.
Motorola format: Motorola or Intel format can be set.
Word alignment: In order for the channel address range to commence at a word boundary, empty bytes are
inserted into the process image as appropriate.
SB n: Status byte for channel n (appears in the input process image).
CB n: Control byte for channel n (appears in the output process image).
Ch n D0: channel n, lower-order data byte
Ch n D1: channel n, higher-order data byte
reserved: This byte is assigned to the process data memory, although it has no function.
"-": This byte is not used or occupied by the terminal/module.
KL3444, KL3448, KL3454 und KL345846Version: 3.2.0
Access from the User Program
7.3Control and Status Bytes
Channel 1
The control and status bytes (CB1 and SB1) for channel 1 in the process data mode [}47] and for register
communication [}48] are described below.
Channel 2, channel 3 and channel 4
The control and status bytes of channels 2, 3 and 4 are structured like the control and status byte of channel
1.
7.3.1Process data mode
Control byte1 in process data mode
Control byte1(CB1) is located in the output image [}43], and is transmitted from the controller to the
terminal. In process data mode it has no function.
BitCB1.7CB1.6CB1.5CB1.4CB1.3CB1.2CB1.1CB1.0
NameRegAccess-------
Key
BitNameDescription
CB1.7RegAccess0
CB1.6 …
-0
bin
bin
Register communication off (process data mode)
reserved
CB1.0
Status byte1 in process data mode
The status byte 1(SB1) is located in the input image [}43] and is transmitted from terminal to the controller.
BitSB1.7SB1.6SB1.5SB1.4SB1.3SB1.2SB1.1SB1.0
NameRegAccessErrorLimitValue 2 StateLimitValue 1 State OverrangeUnderrange
Key
BitNameDescription
SB1.7RegAccess0
SB1.6Error1
SB1.5 …
SB1.4
SB1.3 …
SB1.2
LimitValue 2
State
LimitValue 1
State
SB1.1Overrange1
SB1.0Underrange 1
00
01
10
11
00
01
10
11
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
Acknowledgment for process data mode
General error bit
Limit value 2 not enabled
Process data less than limit value 2
Process data greater than limit value 2
Process data equal limit value 2
Limit value 1 not enabled
Process data less than limit value 1
Process data greater than limit value 1
Process data equal limit value 1
Permissible measuring range exceeded
Lower measuring range limit violated
KL3444, KL3448, KL3454 und KL345847Version: 3.2.0
Access from the User Program
7.3.2Register communication
Control byte 1 in register communication
Control byte1(CB1) is located in the output image [}43], and is transmitted from the controller to the
terminal.
BitCB1.7CB1.6CB1.5CB1.4CB1.3CB1.2CB1.1CB1.0
NameRegAccess R/WReg. no.
Key
BitNameDescription
CB1.7RegAccess 1
CB1.6R/W0
CB1.5 …
Reg. no.Register number:
CB1.0
bin
bin
1
bin
Enter here the number of the register that you wish
- to read with input data word DataIN1 [}43], or
- to write with output data word DataOUT1 [}43].
Register communication switched on
Read access
Write access
Status byte 1 in register communication
The status byte 1(SB1) is located in the input image [}43] and is transmitted from terminal to the controller.
BitSB1.7SB1.6SB1.5SB1.4SB1.3SB1.2SB1.1SB1.0
NameRegAccess R/WReg. no.
Key
BitNameDescription
SB1.7RegAccess 1
SB1.6R0
SB1.5 …
Reg. no.Number of the register that was read or written.
bin
bin
Acknowledgment for register access
Read access
SB1.0
KL3444, KL3448, KL3454 und KL345848Version: 3.2.0
Access from the User Program
7.4Register Overview
The following registers are used to parameterize the KL3444, KL3448, KL3454 and KL3458. Each signal
channel of the analog terminal has one register that can be read or written to with the aid of control, status
and data bytes [}43] via register communication.
Register no.CommentDefault valueR/WMemory
R0 [}50]
R1reserved---
..................
R5reserved----
R6 [}50]
R7 [}50]
R8 [}50]
R9 [}50]
R10 [}50]
R11 [}50]
R12 [}50]
R13 [}50]
R14reserved----
R15 [}50]
R16 [}50]
R17 [}51]
R18 [}51]
R19 [}51]
R20 [}51]
R21 [}51]
R22 [}51]
R23reserved----
..................
R30reserved----
R31 [}51]
R32 [}52]
R33 [}53]
R34 [}53]
R35 [}53]
R36 [}53]
R37 [}53]
R38reserved----
...reserved............
R63reserved----
Raw value of the A/D converter (XR)--RRAM
Diagnostic register--RRAM
Command register0x00000
Terminal typeKL3444:0x0D743444
KL3448:0x0D783448
KL3454:0x0D7E3454
KL3458:0x0D823458
Firmware versione.g.0x3141e.g. 1A
Data length (multiplex shift register)0x0230560
Signal channels0x04181048
Minimum data length0x0098152
Data structure (data type register)0x00044
dec
dec
dec
dec
dec
ASCII
dec
dec
dec
dec
Alignment registere.g. 0x7F80e.g.32640
Hardware version numbere.g.0x0000e.g.0
Hardware compensation: Offset (Ba)0x00000
Hardware compensation: Gain (Aa)approx.
0x1350
Manufacturer scaling: Offset (Bh)0x00000
dec
dec
approx.
4944
dec
dec
Manufacturer scaling: Gain (Ah)typ. 0x2000typ. 8192
Overrange limit0x0FFF4095
Under range limit0x00000
Code word register0x00000
Feature register0x09062310
User scaling: Offset (Bw)0x00000
User scaling: Gain (Aw)0x04001024
Threshold 1 in (Y2)0x00000
Threshold 2 in (Y2)0x00000
Cut-off frequency of the digital IIR
0x0100256
dec
dec
dec
dec
dec
dec
dec
dec
dec
R/WRAM
RROM
RROM
RROM
RROM
RROM
RROM
R/WRAM
dec
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
dec
R/WSEEPROM
R/WSEEPROM
R/WRAM
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
R/WSEEPROM
filter
KL3444, KL3448, KL3454 und KL345849Version: 3.2.0
Access from the User Program
7.5Register description
The following registers are used to parameterize the KL3444, KL3448, KL3454 and KL3458. Each signal
channel of the analog terminal has one register that can be read or written to with the aid of control, status
and data bytes [}43] via register communication.
• R0: Raw value A/D-C
Raw value of the A/D converter (XR)
• R6: Diagnostic register
The status byte is mapped to the low-order byte (bit 7 to bit 0) of register R6.
The high-order byte (bit 15 to bit 8) of register R6 is reserved.
• R7: Command register
The command register of KL3444 and KL3454 is currently not used.
• R9: Firmware version
Register R9 contains the ASCII coding of the terminal's firmware version, e.g. 0x3141 (1A)
corresponds to the ASCII character '1' and '0x41' to the ASCII character 'A'. This value cannot be
changed.
• R10: Data length (multiplex shift register)
R10 contains the number of multiplexed shift registers and their length in bits.
• R11: Signal channels
Unlike R10, this contains the number of channels that are logically present. Thus for example a shift
register that is physically present can perfectly well consist of several signal channels.
• R12: Minimum data length
The particular byte contains the minimum data length for a channel that is to be transferred. If the MSB
is set, the control and status byte is not necessarily required for the terminal function and is not
transferred to the control, if the Bus Coupler is configured accordingly.
• R13: Data structure (data type register)
dec)
dec)
) or
)
ASCII
. '0x31'
Data type registerMeaning
0x00Terminal with no valid data type
0x01Byte array
0x02Structure: 1 byte, n bytes
0x03Word array
0x04Structure: 1 byte, n words
0x05Double word array
0x06Structure: 1byte, n double words
0x07Structure: 1byte, 1 double word
0x08Structure: 1byte, 1 double word
0x11Byte array with variable logical channel length
0x12Structure: 1byte, n bytes with variable logical channel length (e.g. 60xx)
0x13Word array with variable logical channel length
0x14Structure: 1byte, n words with variable logical channel length
0x15Double word array with variable logical channel length
0x16Structure: 1byte, n double words with variable logical channel length
• R15: Alignment register
Via the alignment register bits, the Bus Coupler arranges the address range of an analog terminal such
that it starts at a byte boundary.
• R16: Hardware version number
Register R16 contains the hardware version of the terminal; this value cannot be changed.
KL3444, KL3448, KL3454 und KL345850Version: 3.2.0
Access from the User Program
• R17: Hardware compensation - offset (Ba)
This register is used for the offset compensation of the terminal (see equation 1.1). Register value
(16bit signed integer) 0x0000 (0
dec
)
• R18: Hardware compensation - gain (Aa)
This register is used for the gain compensation of the terminal (see equation 1.1). Register value
(16bit signed integerx2
-12
): approx. 0x1350 (4944
dec
)
• R19: Manufacturer scaling - offset (Bh)
This register contains the offset for the manufacturer scaling (see equation 1.3). Register value (16bit
signed integer) 0x0000 (0
dec
)
Manufacturer scaling can be enabled via bit R32.1 [}52]of the feature register.
• R20: Manufacturer scaling - gain (Ah)
This register contains the gain for manufacturer scaling (see equation 1.3). Register value (16bit
signed integerx2
-10
): typically 0x2000 (8192
dec
)
Manufacturer scaling can be enabled via bit R32.1 [}52] of the feature register.
• R21 over-range limit - OvRL (Ya)
This limit value limits the maximum measuring range of the input terminal (see equation 1.0). If it is
exceeded, the associated status bit is set, and the maximum value is displayed. Register value (16bit
signed integer) 0x0FFF (4095
dec
)
• R22 Underrange limit - UnRL (Ya)
If the value falls below this limit, the associated status bit is set, and the minimum value is displayed
(see equation 1.0). Register value (16bit signed integer) 0x0000 (0
dec
)
• R31: Code word register
◦ If you write values into the user registers without first entering the user code word (0x1235) into
the code word register, the terminal will not accept the supplied data.
◦ If you write values into the user registers and have previously entered the user code word
(0x1235) in the code word register, these values are stored in the RAM registers and in the
SEEPROM registers and are therefore retained if the terminal is restarted.
The code word is reset with each restart of the terminal.
KL3444, KL3448, KL3454 und KL345851Version: 3.2.0
Access from the User Program
• R32: Feature register
The feature register specifies the terminal's configuration. Default: 0x0906 (2310
If the limit values of registers OvRL (R21) and UnRL (R22) are exceeded, the associated
status bits are set and the measuring range is restricted accordingly.
R32.7-reserved0
R32.6-reserved0
R32.5-reserved0
R32.4enSiemens0
Standard output format0
bin
1
Siemens output format
bin
The three bits with the lowest value are used for displaying status information (see below).
R32.3enSignRepr0
R32.2enWdTimer0
R32.1enManScal0
R32.0enUsrScal0
Two's complement representation is active0
bin
1
Signed amount representation is active (-1
bin
Watchdog timer is not active1
bin
1
Watchdog timer is active (the watchdog is triggered if no process data are received for
bin
100ms)
Manufacturer scaling is active1
bin
1
Manufacturer scaling is not active
bin
User scaling is not active0
bin
1
User scaling is active
bin
=0x8001)
dec
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
bin
Siemens output format
If the Siemens output format is selected, the lowest three bits are used for status evaluation. The process
data is represented in bits 15 to 3, with bit 15 representing the sign bit. Scaling of the measured value
according to the Siemens standard has to be done via user scaling (R33, R34).
KL3444
Measured valueBit 15 ... 3Bit 2
X
Bit 1
Error
Bit 0
Overflow
Measured value < 20mAProcess data000
Measured value > 20mA-001
KL3454
Measured valueBit 15 ... 3Bit 2
X
Bit 1
wire breakage
Bit 0
under-/overflow
Measured value < 4mA-011
4mA<measured value<20mAProcess data000
Measured value > 20mA-001
KL3444, KL3448, KL3454 und KL345852Version: 3.2.0
Access from the User Program
• R33: User scaling - offset (Bw)
This register contains the offset of the user scaling.
User scaling can be enabled in the feature register via bit R32.0 [}52].
• R34: User scaling - gain (Aw)
This register contains the user scaling gain; 0x0400 (1024
) corresponds to 1.
dec
User scaling can be enabled in the feature register via bit R32.0 [}52].
• R35: Threshold 1 in Y2
If the process data are outside this threshold, the appropriate bits are set in the status byte.
• R36: Threshold 2 in Y2
If the process data are outside this threshold, the appropriate bits are set in the status byte.
• R37: Cut-off frequency of the digital IIR filter
This register determines the cut-off frequency of the digital IIR filter (first order). The IIR filter can be
deactivated in the feature register with bit R32.11 [}52].
ValueCut-off frequency
KL3444, KL3454KL3448, KL3458
0x0100 (default)approx. 200Hzapprox. 100Hz
0x0200approx. 100Hzapprox. 50Hz
0x0300approx. 50Hzapprox. 25Hz
0x0400approx. 20Hzapprox. 10Hz
otherNo filter active
7.6Examples of Register Communication
The numbering of the bytes in the examples corresponds to the display without word alignment.
7.6.1Example 1: reading the firmware version from Register 9
Output Data
Byte 0: Control byteByte 1: DataOUT1, high byteByte 2: DataOUT1, low byte
0x89 (1000 1001
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 not set means: reading the register.
• Bits 0.5 to 0.0 specify the register number 9 with 00 1001
• The output data word (byte 1 and byte 2) has no meaning during read access. To change a register,
write the required value into the output word.
Input Data (answer of the bus terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0x890x330x41
)0xXX0xXX
bin
.
bin
Explanation:
• The terminal returns the value of the control byte as a receipt in the status byte.
• The terminal returns the firmware version 0x3341 in the input data word (byte 1 and byte 2). This is to
be interpreted as an ASCII code:
◦ ASCII code 0x33 represents the digit 3
◦ ASCII code 0x41 represents the letter A
The firmware version is thus 3A.
KL3444, KL3448, KL3454 und KL345853Version: 3.2.0
Access from the User Program
7.6.2Example 2: Writing to an user register
Code word
In normal mode all user registers are read-only with the exception of Register 31. In order to deactivate this write protection you must write the code word (0x1235) into Register 31. If a value other
than 0x1235 is written into Register 31, write protection is reactivated. Please note that changes to
a register only become effective after restarting the terminal (power-off/power-on).
I. Write the code word (0x1235) into Register 31.
Output Data
Byte 0: Control byteByte 1: DataOUT1, high byteByte 2: DataOUT1, low byte
0xDF (1101 1111
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 set means: writing to the register.
• Bits 0.5 to 0.0 specify the register number 31 with 01 1111
• The output data word (byte 1 and byte 2) contains the code word (0x1235) for deactivating write
protection.
)0x120x35
bin
.
bin
Input Data (answer of the bus terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0x9F (1001 1111
)0xXX0xXX
bin
Explanation:
• The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of
the control byte.
• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!
II. Read Register 31 (check the set code word)
Output Data
Byte 0: Control byteByte 1: DataOUT1, high byteByte 2: DataOUT1, low byte
0x9F (1001 1111
)0xXX0xXX
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 not set means: reading the register.
• Bits 0.5 to 0.0 specify the register number 31 with 01 1111
.
bin
• The output data word (byte 1 and byte 2) has no meaning during read access.
Input Data (answer of the bus terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0x9F (1001 1111
)0x120x35
bin
Explanation:
• The terminal returns the value of the control byte as a receipt in the status byte.
KL3444, KL3448, KL3454 und KL345854Version: 3.2.0
Access from the User Program
• The terminal returns the current value of the code word register in the input data word (byte 1 and byte
2).
III. Write to Register 32 (change contents of the feature register)
Output data
Byte 0: Control byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0xE0 (1110 0000
)0x000x02
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 set means: writing to the register.
• Bits 0.5 to 0.0 indicate register number 32 with 10 0000
.
bin
• The output data word (byte 1 and byte 2) contains the new value for the feature register.
CAUTION
Observe the register description!
The value of 0x0002 given here is just an example!
The bits of the feature register change the properties of the terminal and have a different meaning, depending on the type of terminal. Refer to the description of the feature register of your terminal (chapter Registerdescription) regarding the meaning of the individual bits before changing the values.
Input data (response from the Bus Terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0xA0 (1010 0000
)0xXX0xXX
bin
Explanation:
• The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of
the control byte.
• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!
IV. Read Register 32 (check changed feature register)
Output Data
Byte 0: Control byteByte 1: DataOUT1, high byteByte 2: DataOUT1, low byte
0xA0 (1010 0000
)0xXX0xXX
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 not set means: reading the register.
• Bits 0.5 to 0.0 indicate register number 32 with 10 0000
.
bin
• The output data word (byte 1 and byte 2) has no meaning during read access.
Input Data (answer of the bus terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0xA0 (1010 0000
)0x000x02
bin
Explanation:
• The terminal returns the value of the control byte as a receipt in the status byte.
• The terminal returns the current value of the feature register in the input data word (byte 1 and byte 2).
KL3444, KL3448, KL3454 und KL345855Version: 3.2.0
Access from the User Program
V. Write Register 31 (reset code word)
Output Data
Byte 0: Control byteByte 1: DataOUT1, high byteByte 2: DataOUT1, low byte
0xDF (1101 1111
)0x000x00
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
• Bit 0.6 set means: writing to the register.
• Bits 0.5 to 0.0 specify the register number 31 with 01 1111
.
bin
• The output data word (byte 1 and byte 2) contains 0x0000 for reactivating write protection.
Input Data (answer of the bus terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0x9F (1001 1111
)0xXX0xXX
bin
Explanation:
• The terminal returns a value as a receipt in the status byte that differs only in bit 0.6 from the value of
the control byte.
• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!
KL3444, KL3448, KL3454 und KL345856Version: 3.2.0
Appendix
8Appendix
8.1Support and Service
Beckhoff and their partners around the world offer comprehensive support and service, making available fast
and competent assistance with all questions related to Beckhoff products and system solutions.
Beckhoff's branch offices and representatives
Please contact your Beckhoff branch office or representative for local support and service on Beckhoff
products!
The addresses of Beckhoff's branch offices and representatives round the world can be found on her internet
pages:
http://www.beckhoff.com
You will also find further documentation for Beckhoff components there.
Support offers you comprehensive technical assistance, helping you not only with the application of
individual Beckhoff products, but also with other, wide-ranging services:
• support
• design, programming and commissioning of complex automation systems
• and extensive training program for Beckhoff system components