2.3Basic Function Principles ................................................................................................................12
3 Mounting and wiring................................................................................................................................14
3.1Instructions for ESD protection........................................................................................................14
3.2Installation on mounting rails ...........................................................................................................14
3.3Installation instructions for enhanced mechanical load capacity .....................................................18
6.1Support and Service ........................................................................................................................39
KL51013Version: 3.1
Page 4
Table of content
KL51014Version: 3.1
Page 5
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.
KL51016Version: 3.1
Page 7
1.3Documentation Issue Status
VersionComment
3.1• Update chapter “Instructions for ESD protection”
The firmware and hardware versions (delivery state) of the terminal can be found in the serial number printed
on the side.
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:
35 - week of production 35
4 - year of production 2004
1B - firmware version 1B
1 - hardware version 1
KL5101
FWHW
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.
KL51017Version: 3.1
Page 8
Foreword
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:
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
identifier
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
S12SBTNk4p562d7
1K321KEL1809
Q6Q1
2P142P401503180016
51S1251S678294104
30P3230PF971, 2*K183
Number of digits
incl. data identifier
Example
KL51018Version: 3.1
Page 9
Foreword
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.
KL51019Version: 3.1
Page 10
Product overview
2Product overview
2.1KL5101 - Introduction
Fig.2: KL5101
Incremental encoder interface
The KL5101 terminal is an interface for direct connection of incremental encoders with difference signal
(RS422) or single inputs. A 16-bit counter with a quadrature decoder and a 16-bit latch for the zero pulse can
be read, set or enabled. Incremental encoders with alarm outputs can be connected at the interface's status
input. Period duration measurement with a resolution of 200ns is possible. The G2 input allows the counter
to be halted (high = stop), and the value is read with a positive edge at G1.
Limit frequency4 million increments/s (with 4-fold evaluation)
Quadrature decoder1, 2, or 4-fold evaluation
Zero-pulse latch16 bit
Commandsread, set, enable
Power supply24VDC (-15%/+20%)
Supply voltage24VDC (-15%/+20%)
Current consumption power contacts- (no power contacts)
Current consumption K-bustyp. 60mA
Bit width in process imageInput: 1 x 16 bit data, 1 x 8 bit control/status
Weightapprox. 85g
Permissible ambient temperature range
during operation
Permissible ambient temperature range
during storage
Permissible relative air humidity95%, no condensation
Vibration / shock resistance
EMC immunity/emissionconforms to EN61000-6-2 / EN61000-6-4
Protection classIP20
Installation positionvariable
Approval
DC
-25°C ... + 60°C (extended temperature range)
-40°C ... + 85°C
conforms to EN60068-2-6/ EN60068-2-27, see also Installation
instructions for enhanced mechanical load capacity [}18]
CE, cULus, ATEX [}22]
Product overview
KL510111Version: 3.1
Page 12
Product overview
2.3Basic Function Principles
The KL5101 incremental encoder interface terminal enables the connection of any incremental encoder to
the Bus Coupler or PLC. A 16-bit counter with a quadrature decoder and a 16-bit latch can be read, set or
enabled. In addition to the encoder inputs A, B and C, an additional latch input G1 (24V) and a gate input
G2 (24V) for locking the counter are available.
It is also possible for the 16-bit up/down counter operating mode to be selected. In this mode, input B is the
counter input.
1, 2, or 4-fold evaluation of the encoder signals A, B, C in simple or complementary form can be
parameterized via the fieldbus.
The terminal is supplied as a 4-fold quadrature decoder with complementary evaluation of the sensor signals
A, B, C. To operate the encoder interface, the 24VDC operating voltage must be connected to the terminal
contacts in addition to the encoder inputs.
From hardware version 03 (i.e. from 18 June 1998) the KL5101 is delivered with new, additional features:
• If the incremental encoder has an alarm output, it can be connected to the status input of the KL5101.
• A period duration measurement with a resolution of 200ns can also be carried out.
Operation modes
Can be set via the feature register (default setting incremental encoder):
A, B, zero pulse incremental encoder (default)
Up/down counter with:
• A = count; the positive edges of the input pulses are counted
• B = up/down input
◦ B = 0: Up count direction
◦ B = 1: Down count direction
• C = gate input
◦ C = 0: Counter enabled
◦ C = 1: Counter is locked
Functions
• Counting
• Set counter
• Activate zero pulse and save valid value
• Determination of the period duration between two pulses with a resolution of 200ns (the time between
two positive edges of input signal A is evaluated).
• Display of a counter overflow or underflow.
Process data
The KL5101 always occupies 6bytes of input data and 6bytes of output data. The control/status byte is
located at the lowest byte offset. The data word D0/D1 contains the counter word (read/set), the data word
D3/D4 contains the latch word (read). In period duration measurement mode, the period duration is output in
D2 together with D3/D4.
LED display
The signal LEDs indicate the states of the encoder inputs A, B, C and the status input, as well as the state of
the logic inputs of the gate and the additional external latch. The RUN LED indicates cyclic data exchange
with the higher-level controller. If no process data is exchanged for 100ms, the RUN LED goes out. The
Power UE LED indicates the operating voltage for the power supply of the incremental encoder.
KL510112Version: 3.1
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Connection
Product overview
Fig.3: Assignment of the terminal contacts
• Inputs A, /A: Pulse input in encoder and counter mode of the terminal.
• Inputs B, /B: Phase-shifted pulse input in encoder mode of the terminal.
• Counting direction input in counter mode of the terminal: Counting direction:
◦ + 5V (or open contact): up
◦ 0V: down
• Inputs C, /C: Zero point pulse input for the terminal’s latch register.
This input is activated via the EN_LATC bit in the control byte of the terminal.
• External Latch 24V: Additional latch input of the terminal.
This input is activated via the EN_LAT_EXT bit in the control byte of the terminal.
If this input is enabled, the counter value will be latched when the edge changes from 0V to 24V.
• External Gate 24V: A high level at this contact suppresses counting by the terminal.
• Status Input: If the incremental encoder has an alarm output, it can be connected to the status input
(active low input with internal pull-up circuitry).
• Ue: Power supply for the encoder (+5V).
• Uo: Power supply for the encoder (0V).
• 0V, 24V: A voltage supply of 0V and 24V must be connected to these contacts for operation of the
terminal.
KL510113Version: 3.1
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Mounting and wiring
3Mounting and wiring
3.1Instructions 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.4: Spring contacts of the Beckhoff I/O components
3.2Installation 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!
KL510114Version: 3.1
Page 15
Assembly
Mounting and wiring
Fig.5: 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).
KL510115Version: 3.1
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Mounting and wiring
Disassembly
Fig.6: 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.
KL510116Version: 3.1
Page 17
Fig.7: Power contact on left side
Mounting and wiring
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!
KL510117Version: 3.1
Page 18
Mounting and wiring
3.3Installation 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.
3.4Connection
3.4.1Connection 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.
KL510118Version: 3.1
Page 19
Mounting and wiring
• 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.8: 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.
Pluggable wiring (ESxxxx / KSxxxx)
Fig.9: 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.
KL510119Version: 3.1
Page 20
Mounting and wiring
High Density Terminals (HD Terminals)
Fig.10: 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!
KL510120Version: 3.1
Page 21
Mounting and wiring
3.4.2Wiring
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.11: 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 [}20]) 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
Wire stripping length8 ... 9mm
2
2
2
2
3.4.3Shielding
Shielding
Encoder, analog sensors and actors should always be connected with shielded, twisted paired
wires.
3.5ATEX - 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:
KL510122Version: 3.1
Page 23
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
3.6ATEX 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
KL510123Version: 3.1
Page 24
Configuration Software KS2000
4Configuration Software KS2000
4.1KS2000 - 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.12: 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.
KL510124Version: 3.1
Page 25
Configuration Software KS2000
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.
KL510125Version: 3.1
Page 26
Access from the user program
5Access from the user program
5.1KL5101 - Terminal configuration
Each terminal channel is mapped in the Bus Coupler. Depending on the type of the Bus Coupler and the
mapping configuration (e.g. Motorola/Intel format, word alignment etc.) the terminal data are mapped in
different ways to the Bus Coupler memory.
In contrast to analog input and output terminals, the KL5101 always also maps the control and status byte,
independently of the higher-level fieldbus system.
BK2000 Lightbus coupler
With the BK2000 Lightbus coupler, the control/status byte is always mapped in addition to the data bytes (i.e.
for all analog terminals). This is always in the low byte on the offset address of the terminal channel.
Fig.13: Mapping for Lightbus Coupler - example for KL5101
BK3000 PROFIBUS coupler
In the BK3000 Profibus coupler, the KL5101 is always mapped with 6 bytes of input data and 6 bytes of
output data.
KL510126Version: 3.1
Page 27
Access from the user program
Fig.14: Mapping for Profibus Coupler - example for KL5101
BK4000 Interbus Coupler
The BK4000 Interbus coupler normally maps the KL5101 with 6bytes of input data and 6 bytes of output
data.
Fig.15: Mapping for Interbus Coupler - example for KL5101
Other Bus Couplers and further information
Further information about the mapping configuration of Bus Couplers can be found in the Appendix of the
respective Bus Coupler manual under Master configuration.
The chapter on Mapping in the Bus Coupler [}28] contains an overview of possible mapping
configurations, depending on the configurable parameters.
KL510127Version: 3.1
Page 28
Access from the user program
Parameterization with KS2000
The KS2000 configuration software can be used for parameterizations via the serial interface of the
Bus Coupler, independent of the fieldbus system.
5.2Mapping in the Bus Coupler
As already described in the Terminal Configuration section, each Bus Terminal is mapped in the Bus
Coupler. This mapping is usually done with the default setting in the Bus Coupler / Bus Terminal. The
KS2000 configuration software or a master configuration software (e.g.ComProfibus or TwinCAT System
Manager) can be used to change this default setting.
If the terminals are fully evaluated, they occupy memory space in the input and output process image.
The following tables provide information about how the terminals map themselves in the Bus Coupler,
depending on the parameters set.
5.2.1Standard format
The KL5101 is mapped into the bus coupler depending on the set parameters. The terminal always occupies
memory space in the process image of the inputs and outputs.
ConditionsWord offsetHigh ByteLow Byte
Complete evaluation: any
Motorola format: no
Word alignment: no
0D0CB/SB
1D2D1
2D4D3
ConditionsWord offsetHigh ByteLow Byte
Complete evaluation: any
Motorola format: yes
Word alignment: no
ConditionsWord offsetHigh ByteLow Byte
Complete evaluation: any
Motorola format: no
Word alignment: yes
ConditionsWord offsetHigh ByteLow Byte
Complete evaluation: any
Motorola format: yes
Word alignment: yes
Complete evaluationThe terminal is mapped with control and status byte.
Motorola formatMotorola or Intel format can be set.
Word alignmentThe terminal is positioned on a word limit in the Bus Coupler.
CBControl byte (appears in the process image of the outputs).
SBStatus byte (appears in the process image of the inputs).
D0/D1Counter word (read/set)
(D2)The period duration is output here, together with D3/D4.
D3/D4Latch word (read)
“-“This byte is not used or occupied by the terminal.
0D1CB/SB
1D2D0
2D3D4
0-CB/SB
1D1D0
2-D2
3D4D3
0-CB/SB
1D0D1
2-D2
3D3D4
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5.3Register overview
AddressDesignationDefault valueR/WStorage medium
R0…R5reserved0x0000R
R6Diagnostic register not used0x0000R
R7Command register not used0x0000R
R8Terminal type5101RROM
R9Firmware version0x????RROM
R10Multiplex shift register0x0218/0130RROM
R11Signal channels0x0130RROM
R12Minimum data length0x03030RROM
R13Data structure0x0000RROM
R14reserved0x0000R
R15Alignment registervariableR/WRAM
R16Hardware version number0x????R/WSEEROM
R17…R30reserved0x0000R/WSEEROM
R31Code word registervariableR/WRAM
R32Feature register0x2200R/WSEEROM
R33…R61reserved0x0000R/WSEEROM
5.4Register description
The registers can be read or written via the register communication. They are used for the parameterization
of the terminal.
R0 to R7: Registers in the internal RAM of the terminal
The process variables can be used in addition to the actual process image. Their function is specific to the
terminal.
• R0 to R5: reserved
• R6: Diagnostic register
The diagnostic register can contain additional diagnostic information. Parity errors, for instance, that
occur in serial interface terminals during data transmission are indicated here.
• R7: Command register
High-Byte_Write = function parameter
Low-Byte_Write = function number
High-Byte_Read = function result
Low-Byte_Read = function number
R8 to R15: Registers in the internal ROM of the terminal
The type and system parameters are hard programmed by the manufacturer, and the user can read them
but cannot change them.
• R8: Terminal type
The terminal type in register R8 is needed to identify the terminal.
• R9: Software version (X.y)
The software version can be read as a string of ASCII characters.
• R10: Data length
R10 contains the number of multiplexed shift registers and their length in bits.
The Bus Coupler sees this structure.
• R11: Signal channels
Related to 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.
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• 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 type register
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 1 byte n double words
0x07Structure 1 byte 1 double word
0x08Structure 1 byte 1 double word
0x11Byte array with variable logical channel length
0x12Structure 1 byte n bytes with variable logical channel length (e.g. 60xx)
0x13Word array with variable logical channel length
0x14Structure 1 byte n words with variable logical channel length
0x15Double word array with variable logical channel length
0x16Structure 1 byte n double words with variable logical channel length
• R14: reserved
• R15: Alignment bits (RAM)
The alignment bits are used to place the analog terminal in the Bus Coupler on a byte boundary.
R16 to R30: Manufacturer parameter area (SEEROM)
The manufacturer parameters are specific for each type of terminal. They are programmed by the
manufacturer, but can also be modified by the controller. The manufacturer parameters are stored in a serial
EEPROM in the terminal, and are retained in the event of voltage drop-out.
These registers can only be altered after a code word has been set in R31 [}30].
R31 to R47: User parameter area (SEEROM)
The user parameters are specific for each type of terminal. They can be modified by the programmer. The
user parameters are stored in a serial EEPROM in the terminal, and are retained in the event of voltage
drop-out. The user area is write-protected by a code word.
• R31: Code word register in RAM
The code word 0x1235 must be entered here so that parameters in the user area can be modified.
If any other value is entered into this register, the write-protection is active. When write protection is
not active, the code word is returned when the register is read. If the write protection is active, the
register contains a zero value.
• R32: Feature register
[0x2200]
This register specifies the operation modes of the terminal.
The default values are shown in square brackets.
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Feature bit no.Description of the operation mode
Bit 00• reserved, do not modify!
Bit 10/1• 0: Counter inhibit with high-level at the gate input [0]
• 1: Counter inhibit with low-level at gate input
Bit 2, Bit 300• Status input (active-low) is mapped into status byte 5 (ST.5) [00]
01• reserved
10• ST.5 = Status input, ST.6 = Status input
11• ST.5 = Status input, ST.6 = !Status input
Bit 4 - Bit6000• External Latch function active [000]
001• Period measurement active
010
…
111
Bit 7 - Bit 90• reserved, do not modify!
Bit 10, Bit 11004-fold evaluation of the encoder signals A, B, C, i.e. both rising and falling edges of the encoder signals
011-fold evaluation of the encoder signals A, B, C, i.e. each period of the encoder signal A is counted.
102-fold evaluation of the encoder signals A, B, C, i.e. each edge of the encoder signal A is counted.
114-fold evaluation of the encoder signals A, B, C
Bit 12 - Bit 140• reserved, do not modify!
Bit 150/10: Encoder Interface [0]
• reserved
A, B are counted. [00]
1: Counter mode is active.
16-bit up/down counter
Input A: Counter
Input B: Counting direction (5V or open = up, 0V = down)
Input C: Latch
• R33 - R47
Registers that depend on the terminal type.
• R47 - R63
Extended registers with additional functions.
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5.5Control and status byte
5.5.1Process data exchange
Control byte for process data exchange
The control byte is transferred from the controller to the terminal. It can be used
• in register mode (REG = 1) or
• in process data exchange (REG = 0).
Various actions are triggered in the KL5101 with the control byte:
Bit76543210
NameREG=0---EN_Latch_Ex_nCnt_SetEN_LAT_EXT /
RD_PERIOD
BitNameFunction
3En_Latch_Ext_nThe external latch input is activated for the negative edge.
The counter value is stored in the latch register with the first external latch pulse after validity of the
En_Latch_Ext_n bit. When this bit is set, the subsequent pulses do not have any effect on the latch register.
Attention must be paid to ensuring that the corresponding latch valid bit (Latch_Ext_Val) has been removed
from the terminal before alerting of the zero pulse. This functionality can be set in the feature register [}30]
(default setting).
2Cnt_SetA rising edge at Cnt_Set will set the counter to the value specified in the process data.
1En_Latch_Ext The external latch input is activated for the positive edge.
The counter value is stored in the latch register with the first external latch pulse after validity of the
En_Latch_Ext bit. When this bit is set, the subsequent pulses do not have any effect on the latch register.
Attention must be paid to ensuring that the corresponding latch valid bit (Latch_Ext_Val) has been removed
from the terminal before alerting of the zero pulse. This functionality can be set in the feature register [}30]
(default setting).
RD_PeriodThe periods between two positive edges at input A are measured with a resolution of 200ns. When the bit
is set, this period is output in data bytes D2, D3 and D4. This functionality can be set in the feature register[}30].
0En_LatchThe zero point latch (C input) is activated.
The counter value is stored in the latch register with the first external latch pulse after validity of the
En_Latch bit (this has priority over En_Latch_Ext). When this bit is set, the subsequent pulses do not have
any effect on the latch register.
Attention must be paid to ensuring that the corresponding latch valid bit (Latch_Val) has been removed from
the terminal before alerting of the zero pulse. (the Latch_Val bit cannot be removed from the terminal until
the C pulse has a low level).
EN_LATC
For the external latch input:
Activation of the positive edge (En_Latch_Ext = 1) has priority over activation of the negative edge
(En_Latch_Ext_N = 1).
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Status byte for process data exchange
The status byte is transmitted from the terminal to the controller. The status byte contains various status bits
of the KL5101.
4OverflowThis bit is set if an overflow (65535 to 0) of the 16-bit counter occurs.
3UnderflowThis bit is set if an underflow (0 to 65535) of the 16-bit counter occurs.
2CntSet_AccThe data for setting the counter has been accepted by the terminal.
1Latch_Ext_Val An external latch pulse has occurred. The data D2, D3 in the process image correspond to the latched
RD_Period_Q Data bytes 2, 3 and 4 contain the period duration.
0Latch_ValA zero point latch has occurred. The data D2, D3 in the process image correspond to the latched value
The state of the Status input is mapped in this Bit (adjustable via feature register [}30]).
It is reset when the counter exceeds a third of the measuring range (21845 to 21846) or as soon as an underflow occurs.
It is reset when the counter drops below two thirds of the measuring range (from 43690 to 43689), or immediately an overflow occurs.
value when the bit is set. To reactivate the latch input, En_Latch_Ext must first be removed and then set
again.
when the bit is set. To reactivate the latch input, En_Latch must first be removed and then set again.
Latch_Val
5.5.2Register communication
Register access via process data exchange
• Bit 7=1: Register mode
If bit 7 of the control byte is set, the first two bytes of the user data are not used for process data
exchange but written into the register set of the terminal or read from it.
• Bit 6=0: read, bit 6=1: write
Bit 6 of the control bytes is used to specify whether a register should be read or written.
◦ Bit 6=0: A register is read without changing it. The value can be found in the input process image.
◦ Bit 6=1: The user data are written into a register. The process is complete once the status byte in
the input process image has returned an acknowledgment (see example).
• Bit 0 to 5: Address
The address of the register to be addressed is entered in bits 0 to 5 of the control byte
Control byte in register mode (REG=1)
Bit76543210
NameREG=1W/RA5A4A3A2A1A0
REG = 0
REG = 1
W/R = 0
W/R = 1
: Process data exchange
bin
: Access to register structure
bin
: Read register
bin
: Write register
bin
A5..A0 = register address
Addresses A5...A0 can be used to address a total of 64 registers.
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Fig.16: Register mode control byte
The control or status byte occupies the lowest address of a logical channel. The corresponding register
values are located in the following 2 data bytes. (The BK2000 is an exception: here, an unused data byte is
inserted after the control or status byte, and the register value is therefore placed on a word boundary).
Example 1:
Reading register 8 in the BK2000 with a KL5101 and the end terminal:
If the following bytes are transferred from the controller to the terminal,
ByteByte 3Byte 2Byte 1Byte 0
NameDataOUT, low byteDataOUT, high byteNot usedControl byte
Value0xXX0xXX0xXX0x88
the terminal then returns the following type designation (0x0BCE 0x13ED corresponds to the unsigned
integer 5101).
ByteByte 3Byte 2Byte 1Byte 0
NameDataIN, low byteData IN, high byteNot usedStatus byte
Value0xED0x130x000x88
Example 2
Writing of register 31 in the BK2000 with an intelligent terminal and the end terminal:
If the following bytes (user code word) are transferred from the controller to the terminal,
ByteByte 3Byte 2Byte 1Byte 0
NameDataOUT, low byteDataOUT, high byteNot usedControl byte
Value0x350x120xXX0xDF
the user code word is set and the terminal returns the register address with the bit 7 for register access as
acknowledgement.
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ByteByte 3Byte 2Byte 1Byte 0
NameDataIN, low byteDataIN, high byteNot usedStatus byte
Value0x000x000x000x9F
5.6Examples of Register Communication
The numbering of the bytes in the examples corresponds to the display without word alignment.
5.6.1Example 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.
)0xXX0xXX
bin
.
bin
Input Data (answer of the bus terminal)
Byte 0: Status byteByte 1: DataIN1, high byteByte 2: DataIN1, low byte
0x890x330x41
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.
5.6.2Example 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:
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• 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 the code word (0x1235) for deactivating 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!
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.
• 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.
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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
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)
)0xXX0xXX
bin
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).
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.
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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!
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Appendix
6Appendix
6.1Support 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