Beckhoff KL6021-0023, KL6023 Documentation

Documentation

KL6021-0023 and KL6023

Serial interface terminal and wireless adaptor for EnOcean
radio technology

Version:
Date:

2.0.0
2019-07-16

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

2 Product overview.......................................................................................................................................8

2.1 KL6021-0023 - Introduction ...............................................................................................................8

2.2 KL6021-0023 - Technical Data..........................................................................................................9

2.3 KL6023 - Introduction ......................................................................................................................10

2.4 KL6023 - Technical Data .................................................................................................................11

2.5 Basic Function Principles ................................................................................................................12

3 Mounting and wiring................................................................................................................................14

3.1 Installation on mounting rails ...........................................................................................................14

3.2 Connection of the wireless adapter .................................................................................................17

4 KS2000 Configuration Software.............................................................................................................18

4.1 KS2000 - Introduction......................................................................................................................18

4.2 Parameterization with KS2000 ........................................................................................................19

4.3 Register ...........................................................................................................................................21

4.4 Settings............................................................................................................................................21

4.5 Process data....................................................................................................................................22

5 Programming ...........................................................................................................................................24

5.1 TwinCAT libraries ............................................................................................................................24

6 Access from the user program ..............................................................................................................25

6.1 Process image.................................................................................................................................25

6.2 Control and status byte....................................................................................................................25

6.3 Register overview ............................................................................................................................27

6.4 Register description.........................................................................................................................28

6.5 Examples of Register Communication ............................................................................................29

6.5.1 Example 1: reading the firmware version from Register 9............................................... 29

6.5.2 Example 2: Writing to an user register............................................................................. 29

7 Appendix ..................................................................................................................................................33

7.1 Support and Service ........................................................................................................................33

KL6021-0023 and KL6023 3Version: 2.0.0

Table of contents

KL6021-0023 and KL60234 Version: 2.0.0

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®, EtherCATG®, EtherCATG10®, EtherCATP®, SafetyoverEtherCAT®,
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.

KL6021-0023 and KL6023 5Version: 2.0.0

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.

KL6021-0023 and KL60236 Version: 2.0.0

1.3 Documentation issue status

Version Comment

2.0 • Migration

1.1 • Mounting description expanded

• Information on basic function principles expanded

• Introduction to the KL6023 added

1.0 • Description of the KL6023 (wireless adapter for EnOcean radio technology) added

• Wiring instructions added

• Description of the KS2000 configuration software added

• Technical data added

0.1 First preliminary version

Firmware and hardware versions

Foreword

Documentation
Version

2.0 5D 03 1A 02

1.1 5D 01 1A 01

1.0 5A 00 1A 00

0.1 5A 00 - -

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: WWYYFFHH

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

KL6021-0023 KL6023

Firmware Hardware Firmware Hardware

KL6021-0023 and KL6023 7Version: 2.0.0

Product overview

2 Product overview

2.1 KL6021-0023 - Introduction

Fig.1: KL6021-0023 – serial interface terminal for the connection of the KL6023 wireless adapter

The KL6021-0023 serial interface connects the wireless adapter via an RS485 signal. The KL6023 wireless
adapter operates as an EnOcean radio receiver and receives the radio signals from EnOcean sensors.

LEDs

LED Color Meaning

RUN green This LED indicates the terminal's operating state:

on normal operation
off A watchdog timer overflow has occurred. The RUN LED goes out if no process

data is transmitted to the terminal from the Bus Coupler for 100ms.
TxD green State of the transmit signal line
RxD green State of the receive signal line

Connection

Terminal
point

1 TxD+ Signal line (Transmit Data)
5 TxD- Signal line (Transmit Data)
2 RxD+ Signal line (Receive Data)
6 RxD- Signal line (Receive Data)
3 GND Ground for the KL6023 (bridged internally with terminal point 7)
7 GND Ground for the KL6023 (bridged internally with terminal point 3)
4 +5 V Supply voltage for the KL6023 (bridged internally with terminal point 8)
8 +5 V Supply voltage for the KL6023 (bridged internally with terminal point 4)

Name Signal

KL6021-0023 and KL60238 Version: 2.0.0

Product overview

2.2 KL6021-0023 - Technical Data

Technical data KL6021-0023

Number of inputs 1, for wireless adapter (EnOcean radio technology)
Cable impedance approx. 120Ω
Connecting cable to KL6023 wireless adapter 2 twisted pairs
Length of connection to KL6023 wireless

adapter
Bit width in process image 11 x 8bit user data, 1 x 8bit control/status
Power supply for the electronics via the K-bus
Current consumption via K-bus typically 65mA
Weight approx.60g
Dimensions (WxHxD) approx. 15mmx100mmx70mm
Mounting on 35mm mounting rail according to EN60715
Permissible ambient temperature range

during operation
Permissible ambient temperature range

during storage
Permissible relative air humidity 95%, no condensation
Vibration/shock resistance conforms to EN60068-2-6/ EN60068-2-27, see also

EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Protection class IP20
Mounting position variable
Approval CE, cULus, ATEX

max. 300m

0°C ... + 55°C

-25°C ... + 85°C

Installation instructions for enhanced mechanical load
capacity

KL6021-0023 and KL6023 9Version: 2.0.0

Product overview

2.3 KL6023 - Introduction

Fig.2: KL6023 - Wireless Adapter for EnOcean radio technology

The KL6023 Wireless Adapter receives signals from battery-less sensors with EnOcean technology. These
signals are converted by the Wireless Adapter to a RS485 signal and directly processed further by the
KL6021-0023 serial Bus Terminal. With a radio signal range of at least 30m, the wiring of buildings can be
simplified significantly.

Fig.3: Application

KL6021-0023 and KL602310 Version: 2.0.0

Product overview

The status LEDs of the Wireless Adapter are helpful during commissioning. The LEDs indicate all telegrams
they receive as faulty or faultless. With a maximum distance of 300m between the receiver and the Bus
Terminal station, it is possible to place the receivers at any radio-technically favorable location within a
building. The system does not stipulate a maximum number of transmitters per receiver unit. In practice,
between 25 and 100transmitters per receiver are used.

2.4 KL6023 - Technical Data

Technical data KL6023

(Wireless Adapter for EnOcean radio technology)

Connection 2 twisted pairs, direct to Bus Terminal KL6021-0023
Power supply via KL6021-0023 Bus Terminal (with electrical isolation)
Length of connecting cable to the KL6021-0023 max. 300m
Configuration not required
Frequency band 868.35MHz
Transfer range In open spaces: approx. 300m

Inside buildings: approx. 30m

Radio telegram depending on sensor type:

- 32bit sensor identification number

- number of user bytes is not limited
Receiving aerial integrated in the housing
Housing Box: Polystyrene (grey) with M16 PG threaded fitting for

cable connection

Cover: polycarbonate (transparent)
Weight approx.55g
Dimensions (WxHxD) approx. 52mmx50mmx35.5mm (without PG threaded

fitting)
Permissible ambient temperature range during

operation
Permissible ambient temperature range during

storage
Vibration/shock resistance conforms to EN60068-2-6/ EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2/ EN61000-6-4
Protection class IP66
Mounting position variable
Approval CE

0°C ... + 55°C

-25°C ... + 85°C

KL6021-0023 and KL6023 11Version: 2.0.0

Product overview

2.5 Basic Function Principles

The KL6021-0023 [}8] serial communication terminal connects the KL6023 [}10] EnOcean receiver module
with the Beckhoff Bus Terminal system. EnOcean (http://www.enocean.de) permits radio transmission

without either batteries or an external power supply to the transmitter.

Fig.4: KL6021-0023 and KL6023

Approval of EnOcean radio technology

NOTE

Nature and source of the danger

The KL6032 EnOcean receiver module can be operated in the following countries without registration and
fees.
Permission for use in other countries must be clarified explicitly!

• European union

• Switzerland

Reading received telegrams

When the KL6021-0023 has received new telegrams it indicates this by setting the bit SB.2 [}26] in the
status byte to 1. Reading out received telegrams is initiated through bit CB.0 [}26] in the control byte being

inverted by the higher-level controller. The change from 0 to 1 or from 1 to 0 always causes the next
telegram in the memory to be displayed in the process data. The value of the bit CB.0 [}26] is adopted by
SB.0 [}26] as acknowledgement.

KL6021-0023 and KL602312 Version: 2.0.0

Product overview

The leading synchronization byte and the closing checksum are part of the EnOcean standard, and the
KL6021-0023 filters them out of the telegram, so that the displayed data starts with the telegram header
[}13] and ends with the status field [}13].

Longer telegrams

If the telegram from an EnOcean transmitter consists of more than 4data bytes, it cannot be transferred in a
single K-bus cycle. In that case, the KL6021-0023 sets bit SB.1 [}26] in the status byte in the next read

cycle, placing the next data block from the telegram into the process data.

Faulty telegrams

The KL6021-0023 calculates the checksum for every EnOcean telegram that is received. If this does not
agree with the checksum that has been transmitted the terminal sets bit SB.6 [}26] in the status byte. A

telegram is not then placed into the data memory, and is lost.

Data memory overflow

If the telegrams received by the KL6021-0023 are not read by the higher-level controller, the terminal's
receive memory will overflow, and it will set bit SB.3 [}26] in the status byte. It is also possible for a

telegram only to be partially written into the memory. This will automatically cause an error in the checksum,
and it will be displayed and handled accordingly.

Protocol

The following table illustrates the general structure of an EnOcean telegram:

Bit7 Bit0 Description

Sync_Byte1 (0xA5) Synchronization byte

Sync_Byte0 (0x5A)

H_Seq Length Header

identification

ORG Telegram type

Data Byte3 Data byte

Data Byte2

Data Byte1

Data Byte0

ID Byte3 32bit transmitter ID

ID Byte2

ID Byte1

ID Byte0

Status Status field

Check Sum Checksum (LSB resulting from the addition of all bytes, not

including the synchronization byte or the checksum itself)

H_Seq (3bit)

• 0 unknown transmitter ID received

• 1 known transmitter ID received

• 2 new transmitter learnt

Length (5bit)

• Number of byte following the header
(here: 11)

KL6021-0023 and KL6023 13Version: 2.0.0

Mounting and wiring

3 Mounting and wiring

3.1 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!

Assembly

Fig.5: Attaching on mounting rail

The bus coupler and bus terminals are attached to commercially available 35mm mounting rails (DIN rails
according to EN60715) 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 7.5mm under the terminals
and couplers, you should use flat mounting connections (e.g. countersunk screws or blind rivets).

KL6021-0023 and KL602314 Version: 2.0.0

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 1cm 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 24V)
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 125A.

KL6021-0023 and KL6023 15Version: 2.0.0

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 230V).
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 10mm from the group of terminals.

WARNING

Risk of electric shock!

The PE power contact must not be used for other potentials!

KL6021-0023 and KL602316 Version: 2.0.0

Mounting and wiring

3.2 Connection of the wireless adapter

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!

Fig.8: Connection of the wireless adapter

KL6021-0023 KL6023 – Wireless adapter

Signal Terminal point no. Signal Terminal point no.

RxD+ 2 RxD+ 1
RxD- 6 RxD- 2
GND 3 or 7 GND 3
5V 4 or 8 5V 4

KL6021-0023 and KL6023 17Version: 2.0.0

KS2000 Configuration Software

4 KS2000 Configuration Software

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.9: 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.

KL6021-0023 and KL602318 Version: 2.0.0

KS2000 Configuration Software

Commissioning

The KS2000 software facilitates commissioning of machine components or their fieldbus stations: Configured
settings can be transferred to the fieldbus modules by means of a download. After a login to the terminal
station, it is possible to define settings in couplers, terminals and Fieldbus Box modules directly online. The
same high-level dialogs and register access are available for this purpose as in the configuration phase.

The KS2000 offers access to the process images of the bus couplers and Fieldbus Box modules.

• Thus, the coupler's input and output images can be observed by monitoring.

• Process values can be specified in the output image for commissioning of the output modules.

All possibilities in the online mode can be used in parallel with the actual fieldbus mode of the terminal
station. The fieldbus protocol always has the higher priority in this case.

4.2 Parameterization with KS2000

Connect the configuration interface of your Fieldbus Coupler with the serial interface of your PC via the
configuration cable and start the KS2000 Configuration Software.

Click on the Login button. The configuration software will now load the information for the
connected fieldbus station.
In the example shown, this is

• a BK2020 Lightbus Coupler

• a KL1xx2 Digital Input Terminal

• a KL6021-0023 serial interface terminal (RS485 for EnOcean receiver KL6023)

• a KL9010 Bus End Terminal

KL6021-0023 and KL6023 19Version: 2.0.0

KS2000 Configuration Software

Fig.10: Display of the fieldbus station in KS2000

The left-hand KS2000 window displays the terminals of the fieldbus station in a tree structure.
The right-hand KS2000window contains a graphic display of the fieldbus station terminals.

In the tree structure of the left-hand window, click on the plus-sign next to the terminal whose parameters
you wish to change (item 2 in the example).

Fig.11: KS2000 branch for channel 1 of the KL6021-0023

For the KL6021-0023, the branches Register, Settings and ProcData are displayed:

KL6021-0023 and KL602320 Version: 2.0.0

KS2000 Configuration Software

• Register [}21] permits direct access to the registers of the KL6021-0023.

• There are no dialog masks to be found for parameterizing the KL6021-0023 under Settings, since no
terminal-specific settings are required.

• ProcData [}22] displays the KL6021-0023 process data.

4.3 Register

Under Register you can directly access the registers of the KL6021-0023. The meaning of the register is
explained in the Register Overview [}27].

Fig.12: Register view in KS2000

4.4 Settings

No terminal-specific settings are necessary for the KL6021-0023 and the KL6023.

KL6021-0023 and KL6023 21Version: 2.0.0

KS2000 Configuration Software

4.5 Process data

The Status byte (Status), the Control byte (Ctrl) and the process data (Data) are displayed in a tree structure
under ProcData.

Fig.13: ProcData

The spectacles mark the data that are currently graphically displayed in the History field.

Fig.14: History field

The current input value is displayed numerically in the Value field.

Fig.15: Value field

Output values can be modified through direct input or by means of the fader control.

KL6021-0023 and KL602322 Version: 2.0.0

KS2000 Configuration Software

Fig.16: Value field

WARNING

Changing output values (forcing)

Note that changing output values (forcing) can have a direct effect on your automation application.
Only change these output values if you are certain that the state of your system permits it, and that there
will be no risk to people or to the machine!

After pressing the Settings button you can set the format of the numerical display to hexadecimal, decimal or
binary.

Fig.17: Settings

KL6021-0023 and KL6023 23Version: 2.0.0

Programming

5 Programming

5.1 TwinCAT libraries

Software documentation in the Beckhoff Information System:

TwinCAT 2: TwinCAT 2 PLC Lib: EnOcean

TwinCAT 3: TwinCAT 3 PLC Lib: Tc2_EnOcean

KL6021-0023 and KL602324 Version: 2.0.0

Access from the user program

6 Access from the user program

6.1 Process image

The KL6021-0023 is represented in the process image with 12bytes of input data and 12bytes of output
data. These are organized as follows:

Byte offset Format Input data Output data

0 Byte

1 Byte DataIn0 DataOut0
2 Byte DataIn1 DataOut1
3 Byte DataIn2 DataOut2
4 Byte DataIn3 DataOut3
5 Byte DataIn4 DataOut4
6 Byte DataIn5 DataOut5
7 Byte DataIn6 DataOut6
8 Byte DataIn7 DataOut7
9 Byte DataIn8 DataOut8
10 Byte DataIn9 DataOut9
11 Byte DataIn10 DataOut10

Status byte (SB [}25]) Control byte (CB [}25])

6.2 Control and status byte

Register communication

Control byte (for register communication)

The control byte(CB) is located in the output image [}25], and is transmitted from the controller to the
terminal.

Bit CB.7 CB.6 CB.5 CB.4 CB.3 CB.2 CB.1 CB.0
Name RegAccess R/W Reg. no.

Key

Bit Name Description

CB.7 RegAccess 1
CB.6 R/W 0

CB.5 to
CB.0

Status byte (for register communication)

Reg. no. Register number:

Register communication switched on

bin

Read access

bin

1

Write access

bin

Enter the number of the register [}27] that you want to read or write here.

The status byte(SB) is located in the input image [}25], and is transmitted from the terminal to the
controller.

Bit SB.7 SB.6 SB.5 SB.4 SB.3 SB.2 SB.1 SB.0
Name RegAccess R/W Reg. no.

KL6021-0023 and KL6023 25Version: 2.0.0

Access from the user program

Key

Bit Name Description

SB.7 RegAccess 1
SB.6 R 0
SB.5 to

Reg. no. Number of the register that was read or written.

Acknowledgment for register access

bin

Read access

bin

SB.0

Process data during the register communication

The process data that is displayed is set to zero during the register communication!

Process data mode

Control byte in process data mode

The control byte(CB) is located in the output image [}25], and is transmitted from the controller to the
terminal.

Bit CB.7 CB.6 CB.5 CB.4 CB.3 CB.2 CB.1 CB.0
Name RegAccess - - - - - - NextTelegramReq

Key

Bit Name Description

CB.7 RegAccess 0
CB.6 to

- 0

Register communication off (process data mode)

bin

reserved

bin

CB.1
CB.0 NextTelegramReq 0/1

By inverting this bit, the next EnOcean telegram in the input memory of

bin

the KL6021-0023 is copied into the process data.

Status byte in process data mode

The status byte(SB) is located in the input image [}25], and is transmitted from the terminal to the
controller.

Bit SB.7 SB.6 SB.5 SB.4 SB.3 SB.2 SB.1 SB.0
Name RegAccess Error - - BufferFull NewTelegram SameTelegram NextTelegramAck

Key

Bit Name Description

SB.7 RegAccess 0
SB.6 Error 1

Acknowledgment for process data mode

bin

The EnOcean telegram presently displayed in the process data of the

bin

KL6021-0023 has an incorrect checksum.
SB.5 - 0
SB.4 - 0
SB.3 BufferFull 1
SB.2 NewTelegram 1

reserved

bin

reserved

bin

The receive memory of the KL6021-0023 is full.

bin

There is at least one new EnOcean telegram in the receive memory of the

bin

KL6021-0023.
SB.1 SameTelegram 1

The data currently displayed belongs to the same EnOcean telegram as the

bin

data previously displayed, because the telegram contains more than 4data

bytes.
SB.0 NextTelegramAck 0/1

Acknowledgement of having copied the EnOcean telegram into the process

bin

data. The bit adopts the value of the control bit CB.0 [}26] when the

telegram has been copied into the process data.

KL6021-0023 and KL602326 Version: 2.0.0

Access from the user program

6.3 Register overview

These registers are used to parameterize the terminal KL6021. They can be read or written by means of the
register communication.

Register no. Comment Default value R/W Memory

R0 reserved - - - -

... ... ... ... ... ...

R5 reserved - - - -

R6 [}28]

R7 [}28]

R8 [}28]

R9 [}28]

R10 Multiplex shift register 0x0230 560
R11 Signal channels 0x0160 352
R12 Minimum data length 0x6060 24672
R13 Data structure 0x0002 2

Diagnostic register 0x0000 0

Command register 0x0000 0

Terminal type 0x1785 6021

dec

dec

dec

Firmware version e.g. 0x3541 e.g.13633

dec

dec

dec

dec

dec

R14 reserved - - - ­R15 Alignment register typically 0x7F80 typically 32640

R16 [}28]

Hardware version number e.g.0x0000 e.g.0

dec

R17 reserved - - - -

... ... ... ... ... ...

R28 reserved - - - -

R29 [}28]

Terminal type - special identification 0x0017 23

dec

R30 reserved - - - -

R31 [}28]

R32 [}28]

Code word register 0x0000 0

Feature register 0x0000 0

dec

dec

R33 reserved - - - ­R34 reserved - - - -

R35 [}28]

Number of data bytes sent to the

0x000B 11

dec

Bus Coupler
R36 reserved - - - -

... ... ... ... ... ...

R63 reserved - - - -

R RAM

R/W RAM

R ROM

R ROM

R ROM
R ROM
R ROM
R ROM

R/W RAM

dec

R/W SEEPROM

R ROM

R/W RAM

R/W SEEPROM

R ROM

KL6021-0023 and KL6023 27Version: 2.0.0

Access from the user program

6.4 Register description

The registers are used to parameterize the terminal. They can be read or written by means of the register
communication.

R6: Diagnostic register

Status byte SB [}25] is placed into register R6.

R7: Command register

No commands are implemented in this terminal.

R8: Terminal description

The name of the terminal is contained in register R8. KL6021: 0x1785 (6021

dec

)

R9: Firmware version

Register R9 contains the ASCII coding of the terminal's firmware version, e.g. 0x3541 = '5A'. The '0x35'
corresponds here to the ASCII character '5', while the '0x41' represents the ASCII character 'A'.
This value cannot be changed.

R16: Hardware version number

Register R16 contains the hardware version of the terminal; this value cannot be changed.

R29: Terminal type - special identification

The name of the special type of the terminal is contained in register R29. KL6021-0023: 0x0017 (0023

dec

R31: Code word register

• If you write values into the user registers without first entering the user code word (0x1235) into the
code word register, the terminal will not accept the supplied data.

• If you write values into the user registers and have previously entered the user code word (0x1235) in
the code word register, these values are stored in the RAM registers and in the SEEPROM registers
and are therefore retained when the terminal is restarted.

The code word is reset when the terminal is restarted.

)

R32: Feature register

The feature register specifies the terminal's configuration. There are no configurations that can be made for
this terminal.

R35: Number of data bytes sent to the Bus Coupler

Register R35 indicates the number of data bytes that transmitted to the Bus Coupler. This value cannot be
changed.

KL6021-0023 and KL602328 Version: 2.0.0

Access from the user program

6.5 Examples of Register Communication

The numbering of the bytes in the examples corresponds to the display without word alignment.

6.5.1 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

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.

6.5.2 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.

KL6021-0023 and KL6023 29Version: 2.0.0

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

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:

• 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.

KL6021-0023 and KL602330 Version: 2.0.0

Access from the user program

Input data (response from the Bus Terminal)

Byte 0: Status byte Byte 1: DataIN1, high byte Byte 2: DataIN1, low byte

0xA0 (1010 0000

) 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!

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.

• 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.

KL6021-0023 and KL6023 31Version: 2.0.0

Access from the user program

• The input data word (byte 1 and byte 2) is of no importance after the write access. Any values still
displayed are invalid!

KL6021-0023 and KL602332 Version: 2.0.0

Appendix

7 Appendix

7.1 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: [phone]
Fax: [phone]
e-mail: [e-mail]

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: [phone]
Fax: [phone]
e-mail: [e-mail]

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: [phone]
Fax: [phone]
e-mail: [e-mail]

KL6021-0023 and KL6023 33Version: 2.0.0

List of illustrations

List of illustrations

Fig. 1 KL6021-0023 – serial interface terminal for the connection of the KL6023 wireless adapter...... 8

Fig. 2 KL6023 - Wireless Adapter for EnOcean radio technology ......................................................... 10

Fig. 3 Application ................................................................................................................................... 10

Fig. 4 KL6021-0023 and KL6023........................................................................................................... 12

Fig. 5 Attaching on mounting rail ........................................................................................................... 14

Fig. 6 Disassembling of terminal............................................................................................................ 15

Fig. 7 Power contact on left side............................................................................................................ 16

Fig. 8 Connection of the wireless adapter ............................................................................................. 17

Fig. 9 KS2000 configuration software.................................................................................................... 18

Fig. 10 Display of the fieldbus station in KS2000 .................................................................................... 20

Fig. 11 KS2000 branch for channel 1 of the KL6021-0023...................................................................... 20

Fig. 12 Register view in KS2000.............................................................................................................. 21

Fig. 13 ProcData ...................................................................................................................................... 22

Fig. 14 History field .................................................................................................................................. 22

Fig. 15 Value field .................................................................................................................................... 22

Fig. 16 Value field .................................................................................................................................... 23

Fig. 17 Settings ........................................................................................................................................ 23

KL6021-0023 and KL602334 Version: 2.0.0