Documentation
KL2502, KL2512
Dual Channel Pulse Width Output Terminals, 24 V DC
Version:
Date:
4.2
2019-10-11
Table of contents
Table of contents
1 Foreword ....................................................................................................................................................5
1.1 Notes on the documentation..............................................................................................................5
1.2 Safety instructions .............................................................................................................................6
1.3 Documentation issue status ..............................................................................................................7
1.4 Beckhoff Identification Code (BIC) ....................................................................................................7
2 Product overview.....................................................................................................................................10
2.1 KL2502 - Introduction ......................................................................................................................10
2.2 KL2512 - Introduction ......................................................................................................................11
2.3 KL2502, KL2512 - Technical data ...................................................................................................12
2.4 Basic Function Principles ................................................................................................................12
2.5 Operation modes .............................................................................................................................13
3 Mounting and wiring................................................................................................................................15
3.1 Instructions for ESD protection........................................................................................................15
3.2 Installation on mounting rails ...........................................................................................................15
3.3 Connection ......................................................................................................................................19
3.3.1 Connection system .......................................................................................................... 19
3.3.2 Wiring............................................................................................................................... 21
3.3.3 Shielding .......................................................................................................................... 22
3.4 KL2502, KL2512 - Connection and LED description .......................................................................23
3.5 ATEX - Special conditions (standard temperature range) ...............................................................24
3.6 ATEX Documentation ......................................................................................................................25
4 Configuration Software KS2000.............................................................................................................26
4.1 KS2000 - Introduction......................................................................................................................26
5 Access from the user program ..............................................................................................................28
5.1 Terminal configuration .....................................................................................................................28
5.2 Mapping in the Bus Coupler ............................................................................................................29
5.2.1 KL2502 ............................................................................................................................ 29
5.3 Register overview ............................................................................................................................31
5.4 Register description.........................................................................................................................32
5.5 Control and status byte....................................................................................................................35
5.5.1 Register communication .................................................................................................. 35
5.6 Examples of Register Communication ............................................................................................36
5.6.1 Example 1: reading the firmware version from Register 9............................................... 36
5.6.2 Example 2: Writing to an user register............................................................................. 37
6 Appendix ..................................................................................................................................................40
6.1 Support and Service ........................................................................................................................40
KL2502, KL2512 3Version: 4.2
Table of contents
KL2502, KL25124 Version: 4.2
Foreword
1 Foreword
1.1 Notes 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.
Copyright
© Beckhoff Automation GmbH & Co. KG, Germany.
The reproduction, distribution and utilization of this document as well as the communication of its contents to
others without express authorization are prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a
patent, utility model or design.
KL2502, KL2512 5Version: 4.2
Foreword
1.2 Safety instructions
Safety regulations
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.
KL2502, KL25126 Version: 4.2
1.3 Documentation issue status
Version Comment
4.2 • Update chapter “Instructions for ESD protection”
• Chapter “Beckhoff Identification Code (BIC)” added
4.1 • Structure update
• Technical data updated
• Revision status updated
4.0 • Migration
• Structure update
• Technical data updated
• Revision status updated
Firmware and hardware versions
Foreword
Documentation
Version
KL2502 KL2512
Firmware Firmware Firmware Hardware
4.1 3F 08 3F 02
4.0 3F 08 3F 02
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.: 12 06 3A 02:
12 - week of production 12
06 - year of production 2006
3A - firmware version 3A
02 - hardware version 02
1.4 Beckhoff 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.
KL2502, KL2512 7Version: 4.2
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
1 Beckhoff order
number
2 Beckhoff Traceability
Number (BTN)
3 Article description Beckhoff article
4 Quantity Quantity in packaging
5 Batch number Optional: Year and week
6 ID/serial number Optional: Present-day
7 Variant number Optional: Product variant
...
Explanation Data
identifier
Beckhoff order number 1P 8 1P072222
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
S 12 SBTNk4p562d7
1K 32 1KEL1809
Q 6 Q1
2P 14 2P401503180016
51S 12 51S678294104
30P 32 30PF971, 2*K183
Number of digits
incl. data identifier
Example
KL2502, KL25128 Version: 4.2
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.
KL2502, KL2512 9Version: 4.2
Product overview
2 Product overview
2.1 KL2502 - Introduction
Fig.2: KL2502
Two-channel pulse width output terminal 24 V DC, positive switching
The KL2502 output terminal modulates the pulse width of a binary signal, and outputs it electrically isolated
from the K-bus. The mark/space ratio is prescribed by a 16 bit value from the automation device. The output
stage is protected against overload and short-circuit. The Bus Terminal contains two channels that indicate
its signal state by means of light emitting diodes. The LEDs are driven in time with the outputs, and show the
duty factor by their brightness.
KL2502, KL251210 Version: 4.2
2.2 KL2512 - Introduction
Product overview
Fig.3: KL2512
Two-channel pulse width output terminal 24 V DC, negative switching
The KL2512 Bus Terminal enables direct connection of different ohmic loads. The output signal is a pulsewidth modulated voltage. The typical load of an LED group or an incandescent lamp is connected between
the positive side of the supply voltage and the output of the KL2512. Via the fieldbus the output can be set
independently for two channels with a resolution of more than 30,000 steps. The PWM frequency can be
changed. The power transistors switch the ground connection and are electrically isolated from the internal
K-bus.
KL2502, KL2512 11Version: 4.2
Product overview
2.3 KL2502, KL2512 - Technical data
Technical data KL2502 KL2512
Number of outputs 2
Rated load voltage 24VDC (20V…29V)
Connected potential 24V 0V
Load type Resistive, inductive resistive
Max. output current (per channel) 0.1A (short-circuit proof, 1A driver compo-
Base frequency 1 ... 20kHz, default: 250Hz
Duty factor 0…100%
Resolution max. 10bit
Electrical isolation 500V (K-bus/field voltage)
Current consumption from the K-bus typ. 18mA
Load voltage current consumption typ. 10mA
Bit width in process image 48 I/O: 2 x 16bit data (2 x 8bit control/status)
Configuration No address setting,
Weight approx. 50g
Permissible ambient temperature range
during operation
Permissible ambient temperature range
during storage
Permissible relative air humidity 95%, no condensation
Dimensions (HxWxD) approx. 15mm x 100mm x 70mm (width aligned: 12mm)
Mounting [}15]
Vibration/shock resistance conforms to EN 60068-2-6 / EN 60068-2-27
EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Protection class IP20
Installation position variable
Approval CE
nent)
(TON > 750ns, T
configuration via the Bus Coupler or the controller
0°C ... + 55°C
-25°C ... + 85°C
on 35mm mounting rail according to EN60715
ATEX [}24]
IECEx
cULus
> 500ns)
OFF
1.5A
0…100%
CE
ATEX [}24]
2.4 Basic Function Principles
The KL2502 output terminal modulates the pulse width of a binary signal. The peripheral side of the
electronics is electrically isolated from the internal K-bus, and therefore also from the fieldbus. The cycle
(base frequency) and the pulse/pause ratio are configurable. 16-bit values can be specified for setting
purposes via the process image of the controller.
In the delivery state the KL2502 terminal occupies 6bytes in the process image. The mapping of the KL2502
can be set by means of the controller or by the Bus Coupler's configuration interface using the Beckhoff
KS2000 configuration software.
In addition to PWM mode, the KL2502 can also be operated in FM mode (frequency modulation), or with
pulse direction setting for stepper motor control (Frq-Cnt pulse mode).
The default setting of the terminal in delivery state is PWM mode with a base frequency of 250Hz and a
resolution of 10bit.
The LEDs indicate the operating state of the associated terminal channels.
• green Run LED:
◦ On: normal operation
◦ Off: Watchdog timer overflow has occurred. If no process data are transmitted by the Bus Coupler
for 100ms, the green LEDs go out. The output assumes a user-specified voltage (see Feature
register).
KL2502, KL251212 Version: 4.2
Process data
Input format:
KL2502: Two's complement representation (integer -1 corresponds to 0xFFFF)
The ratio of duty cycle/period is specified with a maximum resolution of 10bit.
KL2512: 16bit unsigned integer
Output value Process data
KL2502 KL2512*
0% Duty Cycle 0x0000 (0
50% Duty Cycle 0x3FFF (16383
100% Duty Cycle 0x7FFF (32767
) 0x7FFF (32767
dec
) 0x3FFF (16383
dec
) 0x0000 (0
dec
) 0xFFFF (65535
dec
) 0xBFFF (49151
dec
) 0x8000 (32768
dec
*) The KL2512 passes through the output values (0…100% duty cycle) twice.
2.5 Operation modes
The operating mode of the terminal is set via feature register R32 [}34].
Product overview
)
dec
)
dec
)
dec
PWM mode
2 channels can be operated in the PWMx modes. Note that the operating mode and the cycle duration for
both channels are identical.
PWMH
In PWM mode, the ratio of duty cycle to cycle duration is determined by the process data.
100% duty cycle corresponds to process record 0x7FFF. The cycle duration can be specified during
operation via register R2 [}32]. It is loaded after a system start-up from register R35 [}34] (SEEROM) and
entered into R2.
The frequency range covers 245Hz to 20kHz (0xFA0 in R2 corresponds to 250Hz) with a resolution of
10bit at 245Hz, 976Hz and 3.9kHz.
PWML
In PWM mode, the ratio of duty cycle to cycle duration is determined by the process data. 100% duty cycle
corresponds to process record 0x7FFF (32767). The cycle duration can be specified during operation via
register R2 [}32]. It is loaded after a system start-up from register R35 [}34] (SEEROM) and entered into
R2.
The frequency range is from 2Hz to 250Hz (250Hz corresponds to 0x01F4 in R2).
KL2502, KL2512 13Version: 4.2
Product overview
Frq-Cnt PWM mode
The frequency is specified in 2Hzperdigit via the process output data of the control. The controller receives
the number of periods that are output by the terminal as process input data. In this operating mode, the
count direction is determined via the sign of the output data. 2Hz corresponds to the value 0x0001, -2Hz
corresponds to the value 0xFFFF (signed integer). The frequency range is 2Hz to 2kHz. The pulses are
issued at output A1, the count direction at output A2. Down corresponds to signal level GND, up corresponds
to signal level Vcc (24V).
With rising edge of control bit 0 the counter is set to the value of the output data (control byte in process data
mode, i.e.bit 7=0).
The pulse width ratio is specified via R36 [}34].
Frq-Cnt pulse mode
The frequency is specified in 2Hzperdigit via the process output data of the control. The controller receives
the number of pulses that are output by the terminal as process input data. In this operating mode, the count
direction is determined via the sign of the output data. 2Hz corresponds to the value 0x0001, -2Hz
corresponds to the value 0xFFFF (signed integer). The pulses are issued at output A1, the count direction at
output A2. Down corresponds to signal level GND, up corresponds to signal level Vcc.
The frequency range is 2Hz to 2kHz.
With rising edge of control bit 0 the counter is set to the value of the output data. (Control byte in process
data mode, i.e.bit7=0).
The pulse width is fixed for all frequencies and is specified via R37 [}34].
Cnt-Cnt PWM mode
The number of pulses is specified via the process output data. The controller receives the number of output
periods as process input data. The pulse width ratio is specified via R36 [}34], the cycle duration via R35
[}34]. The output is started with a positive edge of control bit 0. It can be triggered with each additional
edge. The pulses are issued at output A1, output A2 can be set via control bit2. In status bit 0 the controller
receives the transfer and the simultaneous start of the pulse output as status information. Status bit 1
remains set as long as the output is active and status bit 2 returns the status of channel 1.
KL2502, KL251214 Version: 4.2
Mounting and wiring
3 Mounting and wiring
3.1 Instructions 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
3.2 Installation 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!
KL2502, KL2512 15Version: 4.2
Mounting and wiring
Assembly
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).
KL2502, KL251216 Version: 4.2
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.
KL2502, KL2512 17Version: 4.2
Mounting and wiring
Fig.7: 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!
KL2502, KL251218 Version: 4.2
Mounting and wiring
3.3 Connection
3.3.1 Connection 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.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.
KL2502, KL2512 19Version: 4.2
Mounting and wiring
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.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.
Ultrasonically "bonded" (ultrasonically welded) conductors
Ultrasonically “bonded" conductors
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!
KL2502, KL251220 Version: 4.2
Mounting and wiring
3.3.2 Wiring
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.
Terminal housing ELxxxx, KLxxxx ESxxxx, KSxxxx
Wire size width (single core wires) 0.08 ... 2.5mm
Wire size width (fine-wire conductors) 0.08 ... 2.5mm
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 length 8 ... 9mm 9 ... 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.
KL2502, KL2512 21Version: 4.2
Mounting and wiring
Terminal housing High Density Housing
Wire size width (single core wires) 0.08 ... 1.5mm
Wire size width (fine-wire conductors) 0.25 ... 1.5mm
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 length 8 ... 9mm
3.3.3 Shielding
Shielding
Encoder, analog sensors and actors should always be connected with shielded, twisted paired
wires.
KL2502, KL251222 Version: 4.2
Mounting and wiring
3.4 KL2502, KL2512 - Connection and LED description
WARNING
Risk of injury through electric shock and damage to the device!
Bring the Bus Terminal system into a safe, voltage-free state before starting mounting, disassembly or
wiring of the Bus Terminals!
Fig.12: KL2502, KL2512 - Connection and LEDs
KL2502, KL2512 connection
Terminal point No. Comment
Output 1 1 Output 1
+24V 2 +24V (internally connected to terminal point 6 and positive power contact)
0V 3 0V (internally connected to terminal point7 and negative power contact)
PE 4 PE connection
Output 2 5 Output 2
+24V 6 +24V (internally connected to terminal point 2 and positive power contact)
0V 7 0V (internally connected to terminal point3 and negative power contact)
PE 8 PE connection
KL2502, KL2512 LED description
LED Color Description
Signal LED 1.2 green On: normal operation
Off: Watchdog timer overflow has occurred. If no process data is transferred from the Bus Coupler
for 100ms, the green LED goes out and the outputs are set to 0% duty cycle.
KL2502, KL2512 23Version: 4.2
Mounting and wiring
3.5 ATEX - 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
KL2502, KL251224 Version: 4.2
3.6 ATEX 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
KL2502, KL2512 25Version: 4.2
Configuration Software KS2000
4 Configuration Software KS2000
4.1 KS2000 - 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.13: 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.
KL2502, KL251226 Version: 4.2
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.
KL2502, KL2512 27Version: 4.2
Access from the user program
5 Access from the user program
5.1 Terminal configuration
The terminal can be configured and parameterized via the internal register structure. Each terminal channel
is mapped in the Bus Coupler. Mapping of the terminal data in the Bus Coupler memory may differ,
depending on the Bus Coupler type and the set mapping configuration (e.g.Motorola/Intel format, word
alignment etc.). In contrast to the analog input and output terminals, in the KL2502 the control byte and the
status byte are always mapped, irrespective of the fieldbus system used.
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 located in the low byte at the offset address of the terminal
channel.
Fig.14: Mapping in the Lightbus coupler – example for KL2502
Profibus coupler BK3000
With the BK3000 Profibus coupler, the KL2502 is represented by 6bytes of input data and 6bytes of output
data (3bytes per channel) as standard. Thus, 2bytes of user data and 1byte control/status data are
mapped per channel.
Fig.15: Mapping in the Profibus coupler – example for KL2502
BK4000 Interbus Coupler
In delivery state, the BK4000 Interbus Coupler maps the terminals with 6bytes of input data and 6bytes of
output data. Parameterization via the fieldbus is not possible. If the control and status byte is to be used, the
KS2000 configuration software is required.
KL2502, KL251228 Version: 4.2
Access from the user program
Fig.16: Mapping in the Interbus coupler – example for KL2502
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 contains an overview of possible mapping configurations,
depending on the configurable parameters.
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.
5.2 Mapping in the Bus Coupler
As already described in the Terminal Configuration chapter, 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.
The KL2502 is mapped with 6bytes of input and output data.
5.2.1 KL2502
Default mapping for: CANopen, CANCAL, DeviceNet, ControlNet, Modbus, RS232 and RS485 coupler
Conditions Word offset High byte Low byte
Complete evaluation: any
Motorola format: no
Word alignment: no
0 Ch1 D0 Ch1 CB/SB
1 Ch2 CB/SB Ch1 D1
2 Ch2 D1 Ch2 D0
3 - -
Default mapping for: Profibus and Interbus Coupler
Conditions Word offset High byte Low byte
Complete evaluation: any
Motorola format: yes
Word alignment: no
0 Ch1 D1 Ch1 CB/SB
1 Ch2 CB/SB Ch1 D0
2 Ch2 D0 Ch2 D1
3 - -
KL2502, KL2512 29Version: 4.2
Access from the user program
Default mapping for: Lightbus, EtherCAT & Ethernet coupler and Bus Terminal Controller (BCxxxx,
BXxxxx)
Conditions Word offset High byte Low byte
Complete evaluation: any
Motorola format: no
Word alignment: yes
Conditions Word offset High byte Low byte
Complete evaluation: any
Motorola format: yes
Word alignment: yes
0 Res. Ch1 CB/SB
1 Ch1 D1 Ch1 D0
2 Res. Ch2 CB/SB
3 Ch2 D1 Ch2 D0
0 Res. Ch1 CB/SB
1 Ch1 D0 Ch1 D1
2 Res. Ch2 CB/SB
3 Ch2 D0 Ch2 D1
Key
Complete evaluation The terminal is mapped with control and status byte.
Motorola format Motorola or Intel format can be set.
Word alignment The terminal is positioned on a word boundary in the Bus Coupler.
Ch n CB Control byte for channel n (appears in the process image of the outputs).
Ch n SB Status byte for channel n (appears in the process image of the inputs).
Ch n D0 Channel n, data byte 0 (byte with the lowest value)
Ch n D1 Channel n, data byte 1 (byte with the highest value)
"-" This byte is not used or occupied by the terminal.
Res. Reserved: this byte is assigned to the process data memory, although it has no function.
KL2502, KL251230 Version: 4.2
Access from the user program
5.3 Register overview
These registers exist once for each channel
Address Designation Default value R/W Storage medium
R0 reserved 0x0000 (0
R1 reserved 0x0000 (0
R2 [}32]
R3 [}32]
Cycle duration variable R/W RAM
Base frequency variable R/W RAM
R4 reserved 0x0000 (0
R5 [}32]
PWM raw value variable R RAM
R6 Diagnostic register not used 0x0000 (0
R7 Command register - reserved 0x0000 (0
R8 [}32]
R9 [}32]
R10 [}32]
R11 [}32]
R12 [}32]
R13 [}33]
Terminal type 0x09C6 (2502
0x09D0 (2512
Software version number 0x???? R ROM
Multiplex shift register 0x0218 (536
0x0130 (304
Signal channels 0x0218 (536
Minimum data length 0x1818 (6468
Data structure 0x0000 (0
R14 reserved 0x0000 (0
R15 [}33]
R16 [}33]
Alignment register variable R/W RAM
Hardware version number 0x???? R/W SEEPROM
R17, R18 reserved 0x0000 (0
R19 [}33]
R20 [}33]
Manufacturer scaling: Offset 0x0000 (0
Manufacturer scaling: Gain 0x0100 (256
R21…R30 reserved 0x0000 (0
R31 [}33]
R32 [}34]
R33 [}34]
R34 [}34]
R35 [}34]
R36 [}34]
R37 [}34]
Code word register variable R/W RAM
Feature register 0x0004 (4
User offset 0x0000 (0
User gain 0x0100 (256
Cycle duration PWM 0x0FA0 (4000
Duty cycle 0x4000 (16384
Pulse duration 0x0005 (5
R38…R63 Base frequency 2 (low word) 0x86A0 (34464
) R
dec
) R
dec
) R
dec
) R
dec
) R/W
dec
),
R ROM
dec
)
dec
),
dec
dec
dec
) R ROM
dec
) R
dec
) R/W SEEPROM
dec
) R/W SEEPROM
dec
dec
) R SEEPROM
dec
) R/W SEEPROM
dec
) R/W SEEPROM
dec
dec
) R/W SEEPROM
dec
R ROM
)
) R ROM
) R ROM
dec
) R/W SEEPROM
) R/W SEEPROM
) R/W SEEPROM
dec
) R/W SEEPROM
dec
) R/W SEEPROM
dec
KL2502, KL2512 31Version: 4.2
Access from the user program
5.4 Register 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, R1: no function
• R2 cycle duration
In PWM mode, you can specify the cycle duration for ongoing operation. Following a power-on reset,
the cycle duration is taken from R35 [}34] (cycle duration for PWM mode).
◦ PWMH mode, Cnt-Cnt PWM mode:
1 digit corresponds to 1µs
Example: 250Hz => 4000μs = 0xFA0
4KHz => 250μs = 0xFA
◦ PWML mode, Frq-Cnt PWM mode, Frq-Cnt pulse mode:
1 digit corresponds to 8µs
Example: 2Hz => 500ms = 0xF424
200Hz => 5ms = 0x271
• R3 base frequency
In PWM mode the base frequency can be specified here. [R/W]
1 digit corresponds to 1Hz
• R4: Reserved
• R5: PWM raw value
The raw value of the processor PWM unit is stored in this register. This value can be used to calculate
the maximum resolution at a specified frequency.
• R6: Diagnostic register
not used
• 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.
• 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.
KL2502, KL251232 Version: 4.2
Access from the user program
• R13: Data type register
Data type register Meaning
0x00 Terminal with no valid data type
0x01 Byte array
0x02 Structure 1 byte n bytes
0x03 Word array
0x04 Structure 1 byte n words
0x05 Double word array
0x06 Structure 1 byte n double words
0x07 Structure 1 byte 1 double word
0x08 Structure 1 byte 1 double word
0x11 Byte array with variable logical channel length
0x12 Structure 1 byte n bytes with variable logical channel length (e.g. 60xx)
0x13 Word array with variable logical channel length
0x14 Structure 1 byte n words with variable logical channel length
0x15 Double word array with variable logical channel length
0x16 Structure 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 [}33].
• R16: Hardware version number
Register R16 contains the hardware version of the terminal.
• R19: Manufacturer scaling - offset (B_h)
16bit signed integer
Line equation: Y = A_hX +B_h
This register contains the offset of the manufacturer’s linearization equation. The line equation is
enabled via feature register R32 [}34].
• R20: Manufacturer scaling - gain (A_h)
16bit signed integer*2
-8
This register contains the scale factor of the manufacturer’s linearization equation. The line equation is
enabled via feature register R32 [}34].
1 corresponds to register value 0x0100.
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.
KL2502, KL2512 33Version: 4.2
Access from the user program
• R32: Feature register
[0x0004]
This register specifies the operation mode of the terminal. Thus, forinstance, a user-specific scaling
can be enabled for the analog I/Os.
Feature bit no. Description of the operation mode
Bit 0 1 User scaling active [0]
Bit1 1 Manufacturer scaling active [0]
Bit 2 0 [0] watchdog timer active; the PWM signal is set to 0% duty cycle if the terminal does not receive
Bits 3-12 0 Reserved, do not modify!
Bit 13…15 [000] Operation mode Range of values
000 PWMH mode [000] 250Hz - 20kHz
001 PWML mode 2Hz - 250Hz
011 Frq-Cnt PWM mode 2Hz - 2kHz
101 Frq-Cnt pulse mode 2Hz - 2kHz
111 Cnt-Cnt PWM mode 250Hz - 8kHz
any data for 100ms.
• R33: User scaling - offset (B_w)
16bit signed integer
Line equation: Y = A_wX+B_w
This register contains the offset of the user linearization equation. The line equation is enabled via
feature register R32 [}34].
• R34: User scaling - gain (A_w)
16bit signed integer*2
-8
This register contains the scale factor of the user linearization equation. The line equation is enabled
via feature register R32 [}34].
• R35: Cycle duration for PWM mode
[0x0FA0]
After a processor restart, the cycle duration of R35 [}34] is entered in R2.
During operation it can be modified via R2 [}32] (cycle duration) or R3 [}32] (base frequency).
The input takes place as described under R2.
• R36: Duty cycle
[0x4000]
The ratio of duty cycle to cycle duration in Frq-Cnt PWM mode and Cnt-Cnt PWM mode is determined
by this register.
0x2000 corresponds to 25% duty cycle
0x4000 corresponds to 50% duty cycle.
• R37: Pulse duration for Frq-Cnt pulse mode
[0x0005]
This register is used to enter the pulse duration in Frq-Cnt pulse mode.
1 digit corresponds to 8µs.
KL2502, KL251234 Version: 4.2
Access from the user program
5.5 Control and status byte
The control and status byte is transmitted from the controller to the terminal. It can be used
• in register mode [}35] (REG = 1
• in process data exchange (REG = 0
) or
bin
).
bin
5.5.1 Register 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 to a register. The process is complete once the status byte in the
input process image has returned an acknowledgment (see example).
• Bit 0to 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)
MSB
REG=1 W/R A5 A4 A3 A2 A1 A0
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.
Fig.17: Register mode control byte
KL2502, KL2512 35Version: 4.2
Access from the user program
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 of register 8 in the BK2000 with a KL3022 and the end terminal:
If the following bytes are transferred from the controller to the terminal,
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name Data out, low byte Data out, high byte Not used Control byte
Value 0xXX 0xXX 0xXX 0x88
the terminal returns the following type identifier (0x0BBA corresponds to unsigned integer 3022).
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name Data in, low byte Data in, high byte Not used Status byte
Value 0xCE 0x0B 0x00 0x88
Example 2:
Write register 31 in the BK2000 with an intelligent and the end terminal:
If the following bytes (code word [}33]) are transferred from the controller to the terminal,
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name Data out, low byte Data out, high byte Not used Control byte
Value 0x35 0x12 0xXX 0xDF
The code word [}33] is set, and the terminal returns the register address with bit7 for register access as
acknowledgment.
Byte Byte 3 Byte 2 Byte 1 Byte 0
Name Data in, low byte Data in, high byte Not used Status byte
Value 0x00 0x00 0x00 0x9F
5.6 Examples of Register Communication
The numbering of the bytes in the examples corresponds to the display without word alignment.
5.6.1 Example 1: reading the firmware version from Register 9
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 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.
) 0xXX 0xXX
bin
.
bin
KL2502, KL251236 Version: 4.2
Access from the user program
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x89 0x33 0x41
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.
5.6.2 Example 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 byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0xDF (1101 1111
) 0x12 0x35
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 the code word (0x1235) for deactivating write
protection.
Input Data (answer of the bus terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x9F (1001 1111
) 0xXX 0xXX
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 byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0x9F (1001 1111
) 0xXX 0xXX
bin
Explanation:
KL2502, KL2512 37Version: 4.2
Access from the user program
• 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 byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x9F (1001 1111
) 0x12 0x35
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 byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0xE0 (1110 0000
) 0x00 0x02
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 Register
description) regarding the meaning of the individual bits before changing the values.
Input data (response from the Bus Terminal)
Byte 0: Status byte Byte 1: DataIN1, high byte Byte 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!
) 0xXX 0xXX
bin
IV. Read Register 32 (check changed feature register)
Output Data
Byte 0: Control byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0xA0 (1010 0000
) 0xXX 0xXX
bin
Explanation:
• Bit 0.7 set means: Register communication switched on.
KL2502, KL251238 Version: 4.2
Access from the user program
• 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 byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0xA0 (1010 0000
) 0x00 0x02
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 byte Byte 1: DataOUT1, high byte Byte 2: DataOUT1, low byte
0xDF (1101 1111
) 0x00 0x00
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 byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte
0x9F (1001 1111
) 0xXX 0xXX
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!
KL2502, KL2512 39Version: 4.2
Appendix
6 Appendix
6.1 Support 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.
Beckhoff Headquarters
Beckhoff Automation GmbH & Co. KG
Huelshorstweg 20
33415 Verl
Germany
Phone: +49 5246 963 0
Fax: +49 5246 963 198
e-mail: info@beckhoff.com
Beckhoff Support
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
Hotline: +49 5246 963 157
Fax: +49 5246 963 9157
e-mail: support@beckhoff.com
Beckhoff Service
The Beckhoff Service Center supports you in all matters of after-sales service:
• on-site service
• repair service
• spare parts service
• hotline service
Hotline: +49 5246 963 460
Fax: +49 5246 963 479
e-mail: service@beckhoff.com
KL2502, KL251240 Version: 4.2
List of illustrations
List of illustrations
Fig. 1 BIC as data matrix code (DMC, code scheme ECC200)............................................................. 8
Fig. 2 KL2502 ........................................................................................................................................ 10
Fig. 3 KL2512 ........................................................................................................................................ 11
Fig. 4 Spring contacts of the Beckhoff I/O components......................................................................... 15
Fig. 5 Attaching on mounting rail ........................................................................................................... 16
Fig. 6 Disassembling of terminal............................................................................................................ 17
Fig. 7 Power contact on left side............................................................................................................ 18
Fig. 8 Standard wiring............................................................................................................................ 19
Fig. 9 Pluggable wiring .......................................................................................................................... 19
Fig. 10 High Density Terminals................................................................................................................ 20
Fig. 11 Connecting a cable on a terminal point ....................................................................................... 21
Fig. 12 KL2502, KL2512 - Connection and LEDs.................................................................................... 23
Fig. 13 KS2000 configuration software.................................................................................................... 26
Fig. 14 Mapping in the Lightbus coupler – example for KL2502.............................................................. 28
Fig. 15 Mapping in the Profibus coupler – example for KL2502 .............................................................. 28
Fig. 16 Mapping in the Interbus coupler – example for KL2502 .............................................................. 29
Fig. 17 Register mode control byte.......................................................................................................... 35
KL2502, KL2512 41Version: 4.2
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