Lika LD200 User Manual
User's guide
LD200
• Position display, counter, event transmitter, converter
• For HTL/Push-Pull, TTL/Line Driver, Sine/Cosine 1Vpp incremental
encoders/sensors and SSI absolute encoders/sensors
• Linear (mm, inches,...) and angular (degrees) display function
• 1 input and 3 dedicated digital outputs
• RS-232 interface and software tool for easy configuration
Suitable for the following models:
• LD200 universal display
General Contents
Preliminary information 10
1 - Safety summary 11
2 - Identification 13
3 - Mounting instructions 14
4 - Electrical connections 16
5 - Functions 19
6 - Setup 25
7 - RS-232 serial interface 53
8 - Application software for PC 65
Lika Electronic • Tel. +39 0445 806600 • info@lika.biz • www.lika.biz
Smart encoders & actuators
This publication was produced by Lika Electronic s.r.l. 2018. All rights reserved. Tutti i diritti riservati. Alle Rechte vorbehalten. Todos los
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part without prior written approval of Lika Electronic s.r.l. Translation, reproduction and total or partial modification (photostat copies,
film and microfilm included and any other means) are forbidden without written authorisation of Lika Electronic s.r.l.
The information herein is subject to change without notice and should not be construed as a commitment by Lika Electronic s.r.l. Lika
Electronic s.r.l. reserves the right to make all modifications at any moments and without forewarning.
This manual is periodically reviewed and revised. As required we suggest checking if a new or updated edition of this document is
available at Lika Electronic s.r.l.'s website. Lika Electronic s.r.l. assumes no responsibility for any errors or omissions in this document.
Critical evaluation of this manual by the user is welcomed. Your comments assist us in preparation of future documentation, in order
to make it as clear and complete as possible. Please send an e-mail to the following address info@lika.it for submitting your
comments, suggestions and criticisms.
General contents
User's guide......................................................................................................................................................... 1
General contents.............................................................................................................................................................................3
Subject index.....................................................................................................................................................................................8
Typographic and iconographic conventions...................................................................................................................9
Preliminary information...........................................................................................................................................................10
1 - Safety summary....................................................................................................................................................................11
1.1 Safety........................................................................................................................................................................................11
1.2 Electrical safety....................................................................................................................................................................11
1.3 Mechanical safety...............................................................................................................................................................12
2 - Identification..........................................................................................................................................................................13
3 - Mounting instructions......................................................................................................................................................14
3.1 Overall dimensions..............................................................................................................................................................14
3.2 Installation.............................................................................................................................................................................15
3.3 Cleaning and maintenance.............................................................................................................................................15
4 - Electrical connections.......................................................................................................................................................16
4.1 CON6 connections (Power supply to the display).................................................................................................16
4.2 CON1 connections (Mini-DIN connector).................................................................................................................16
4.3 CON2 connections (RS-232 serial interface)...........................................................................................................16
4.4 CON3 connections (Sine/Cosine 1Vpp)......................................................................................................................17
4.5 CON5 connections (Push-Pull, Line Driver, SSI).....................................................................................................17
4.6 Jumper J1 (Power supply to the encoder / sensor)..............................................................................................18
4.7 CON4 connections (Outputs and Input)....................................................................................................................18
5 - Functions...................................................................................................................................................................................19
5.1 Start up....................................................................................................................................................................................19
5.2 Function of the LEDs..........................................................................................................................................................19
5.3 Function of the keys...........................................................................................................................................................20
5.4 Default parameters (factory settings)........................................................................................................................20
5.5 Absolute / relative counting mode..............................................................................................................................20
5.6 Memory on power down (for incremental and 1Vpp encoders / sensors).................................................21
5.7 Offset........................................................................................................................................................................................21
5.8 Displaying values in millimetres / degrees / inches / fractional inches.......................................................21
5.9 Zero setting (or Preset setting).....................................................................................................................................21
5.10 Preset Input function (CON4, pins 7 and 8)..........................................................................................................22
5.10.1 Examples of using the input...........................................................................................................................23
5.11 OUT 1, OUT 2, OUT 3 output function (CON4, pins 1 … 6)..............................................................................23
5.11.1 Examples of using the outputs......................................................................................................................24
6 - Setup...........................................................................................................................................................................................25
6.1 Access to setup menus......................................................................................................................................................25
6.2 Basic settings........................................................................................................................................................................26
Ad..................................................................................................................................................................................................26
L_int............................................................................................................................................................................................26
6.3 Parameter settings..............................................................................................................................................................26
d_tyPE........................................................................................................................................................................................26
6.4 AB0 incremental rotary encoder..................................................................................................................................27
PPr................................................................................................................................................................................................27
diSt_r..........................................................................................................................................................................................27
MOd 360...................................................................................................................................................................................27
Unit..............................................................................................................................................................................................27
EnAbLE 0...................................................................................................................................................................................27
dir..................................................................................................................................................................................................28
dEciMALS..................................................................................................................................................................................28
PrESEt.........................................................................................................................................................................................28
LIMIt P.......................................................................................................................................................................................28
LIMIt N.......................................................................................................................................................................................28
OFFSEt........................................................................................................................................................................................29
EnAb. In.....................................................................................................................................................................................29
6.5 1Vpp Sine/Cosine rotary encoder.................................................................................................................................30
PPr................................................................................................................................................................................................30
diSt_r..........................................................................................................................................................................................30
MOd 360...................................................................................................................................................................................30
Unit..............................................................................................................................................................................................30
EnAbLE 0...................................................................................................................................................................................30
dir..................................................................................................................................................................................................31
dEciMALS..................................................................................................................................................................................31
PrESEt.........................................................................................................................................................................................31
LIMIt P.......................................................................................................................................................................................31
LIMIt N.......................................................................................................................................................................................31
OFFSEt........................................................................................................................................................................................32
EnAb. In.....................................................................................................................................................................................32
6.6 Absolute rotary encoder with SSI interface.............................................................................................................33
ForMAt.......................................................................................................................................................................................33
PPr................................................................................................................................................................................................33
n_turnS......................................................................................................................................................................................33
diSt_r..........................................................................................................................................................................................33
Prtcl.............................................................................................................................................................................................34
codE.............................................................................................................................................................................................34
Unit..............................................................................................................................................................................................34
dir..................................................................................................................................................................................................34
dEciMALS..................................................................................................................................................................................34
PrESEt.........................................................................................................................................................................................35
LIMIt P.......................................................................................................................................................................................35
LIMIt N.......................................................................................................................................................................................35
OFFSEt........................................................................................................................................................................................35
EnAb. In.....................................................................................................................................................................................36
6.6.1 Connecting an SSI encoder with “MSB Left Aligned” protocol..........................................................36
6.7 Lika's SM2, SM25, SM5 magnetic sensors................................................................................................................40
Pitch............................................................................................................................................................................................40
rES................................................................................................................................................................................................40
Unit..............................................................................................................................................................................................40
dir..................................................................................................................................................................................................40
PrESEt.........................................................................................................................................................................................40
LIMIt P.......................................................................................................................................................................................41
LIMIt N.......................................................................................................................................................................................41
OFFSEt........................................................................................................................................................................................41
EnAb. In.....................................................................................................................................................................................41
6.8 AB0 incremental linear encoder/sensor....................................................................................................................43
rES................................................................................................................................................................................................43
Unit..............................................................................................................................................................................................43
EnAbLE 0...................................................................................................................................................................................43
dir..................................................................................................................................................................................................43
PrESEt.........................................................................................................................................................................................44
LIMIt P.......................................................................................................................................................................................44
LIMIt N.......................................................................................................................................................................................44
OFFSEt........................................................................................................................................................................................44
EnAb. In.....................................................................................................................................................................................44
6.9 1Vpp Sine/Cosine linear encoder/sensor...................................................................................................................46
Pitch............................................................................................................................................................................................46
rES................................................................................................................................................................................................46
Unit..............................................................................................................................................................................................46
EnAbLE 0...................................................................................................................................................................................46
dir..................................................................................................................................................................................................47
PrESEt.........................................................................................................................................................................................47
LIMIt P.......................................................................................................................................................................................47
LIMIt N.......................................................................................................................................................................................47
OFFSEt........................................................................................................................................................................................47
EnAb. In.....................................................................................................................................................................................48
6.10 Absolute linear encoder/sensor with SSI interface............................................................................................49
ForMAt.......................................................................................................................................................................................49
StEPS...........................................................................................................................................................................................49
rES................................................................................................................................................................................................50
codE.............................................................................................................................................................................................50
Unit..............................................................................................................................................................................................50
dir..................................................................................................................................................................................................50
PrESEt.........................................................................................................................................................................................50
LIMIt P.......................................................................................................................................................................................51
LIMIt N.......................................................................................................................................................................................51
OFFSEt........................................................................................................................................................................................51
EnAb. In.....................................................................................................................................................................................51
7 - RS-232 serial interface....................................................................................................................................................53
7.1 Connection to a PC.............................................................................................................................................................53
7.2 Setting the serial port.......................................................................................................................................................53
7.3 Communication protocol.................................................................................................................................................53
7.3.1 Protocol structure..................................................................................................................................................54
SOF......................................................................................................................................................................................54
ADD.....................................................................................................................................................................................54
CMD....................................................................................................................................................................................54
ACK.....................................................................................................................................................................................54
DATA..................................................................................................................................................................................54
CHK.....................................................................................................................................................................................55
EOF......................................................................................................................................................................................55
7.3.2 Commands.................................................................................................................................................................55
TPOS...................................................................................................................................................................................56
TDEV...................................................................................................................................................................................56
RDEV...................................................................................................................................................................................56
TFOR...................................................................................................................................................................................57
RFOR...................................................................................................................................................................................57
TPPR....................................................................................................................................................................................57
RPPR...................................................................................................................................................................................57
TREV....................................................................................................................................................................................57
RREV...................................................................................................................................................................................57
TDST....................................................................................................................................................................................57
RDST...................................................................................................................................................................................57
T360...................................................................................................................................................................................57
R360...................................................................................................................................................................................57
TSTE....................................................................................................................................................................................57
RSTE....................................................................................................................................................................................57
TPIT.....................................................................................................................................................................................58
RPIT.....................................................................................................................................................................................58
TRES....................................................................................................................................................................................58
RRES...................................................................................................................................................................................58
TPRO...................................................................................................................................................................................58
RPRO..................................................................................................................................................................................58
TCOD..................................................................................................................................................................................59
RCOD..................................................................................................................................................................................59
TUNI....................................................................................................................................................................................59
RUNI...................................................................................................................................................................................59
TETZ....................................................................................................................................................................................59
RETZ....................................................................................................................................................................................59
TDIR....................................................................................................................................................................................59
RDIR....................................................................................................................................................................................59
TDEC...................................................................................................................................................................................60
RDEC...................................................................................................................................................................................60
TREF....................................................................................................................................................................................60
RREF................................................................................................................................................................................... 60
TLIP.....................................................................................................................................................................................60
RLIP.....................................................................................................................................................................................60
TLIM....................................................................................................................................................................................60
RLIM...................................................................................................................................................................................60
TOFF....................................................................................................................................................................................60
ROFF...................................................................................................................................................................................60
TEIN....................................................................................................................................................................................60
REIN....................................................................................................................................................................................60
TADR...................................................................................................................................................................................61
RADR..................................................................................................................................................................................61
TRLA................................................................................................................................................................................... 61
RRLA...................................................................................................................................................................................61
TVER....................................................................................................................................................................................61
ZERO...................................................................................................................................................................................61
STAR...................................................................................................................................................................................62
STOP...................................................................................................................................................................................62
“Null”.................................................................................................................................................................................62
7.3.3 Examples of using the protocol and the commands..............................................................................63
Setting the Device type..........................................................................................................................................63
Setting the Pulses per revolution......................................................................................................................63
Reading the position of the decimal separator...........................................................................................63
Reading the current position..............................................................................................................................63
Zero setting the position value..........................................................................................................................64
Starting the cyclic transmission.........................................................................................................................64
Reading the current position cyclically..........................................................................................................64
Stopping the cyclic transmission.......................................................................................................................64
8 - Application software for PC..........................................................................................................................................65
8.1 Serial communication settings......................................................................................................................................65
8.2 Selecting the encoder type.............................................................................................................................................66
8.3 Reading the encoder parameters.................................................................................................................................67
8.4 Setting the encoder parameters...................................................................................................................................67
8.5 Reading the position..........................................................................................................................................................68
8.6 Setting the absolute / relative counting mode......................................................................................................68
8.7 Reading the position cyclically......................................................................................................................................68
Subject index
A
Ad............................................................................................26
C
codE................................................................................34, 50
D
d_tyPE...................................................................................26
dEciMALS..............................................................28, 31, 34
dir..............................................28, 31, 34, 40, 43, 47, 50
diSt_r......................................................................27, 30, 33
E
EnAb. In...................................29, 32, 36, 41, 44, 48, 51
EnAbLE 0.......................................................27, 30, 43, 46
F
ForMAt..........................................................................33, 49
L
L_int.......................................................................................26
LIMIt N.....................................28, 31, 35, 41, 44, 47, 51
LIMIt P.....................................28, 31, 35, 41, 44, 47, 51
M
MOd 360.......................................................................27, 30
N
n_turnS................................................................................33
O
OFFSEt......................................29, 32, 35, 41, 44, 47, 51
P
Pitch...............................................................................40, 46
PPr...........................................................................27, 30, 33
PrESEt......................................28, 31, 35, 40, 44, 47, 50
Prtcl........................................................................................34
R
rES....................................................................40, 43, 46, 50
S
StEPS.....................................................................................49
U
Unit...........................................27, 30, 34, 40, 43, 46, 50
Typographic and iconographic conventions
In this guide, to make it easier to understand and read the text the following typographic and
iconographic conventions are used:
• parameters and objects both of the device and the interface are coloured in GREEN;
• alarms are coloured in RED;
• states are coloured in FUCSIA.
When scrolling through the text some icons can be found on the side of the page: they are expressly
designed to highlight the parts of the text which are of great interest and significance for the user.
Sometimes they are used to warn against dangers or potential sources of danger arising from the use of
the device. You are advised to follow strictly the instructions given in this guide in order to guarantee
the safety of the user and ensure the performance of the device. In this guide the following symbols are
used:
This icon, followed by the word WARNING, is meant to highlight the parts of the
text where information of great significance for the user can be found: user must
pay the greatest attention to them! Instructions must be followed strictly in order
to guarantee the safety of the user and a correct use of the device. Failure to heed
a warning or comply with instructions could lead to personal injury and/or damage
to the unit or other equipment.
This icon, followed by the word NOTE, is meant to highlight the parts of the text
where important notes needful for a correct and reliable use of the device can be
found. User must pay attention to them! Failure to comply with instructions could
cause the equipment to be set wrongly: hence a faulty and improper working of
the device could be the consequence.
This icon is meant to highlight the parts of the text where suggestions useful for
making it easier to set the device and optimize performance and reliability can be
found. Sometimes this symbol is followed by the word EXAMPLE when instructions
for setting parameters are accompanied by examples to clarify the explanation.
Preliminary information
This guide is designed to provide the most complete information the operator needs to correctly and
safely install and operate the LD200 universal display.
LD200 is a position display which allows to connect a variety of encoders / sensors, they can be
incremental (HTL/Push-Pull, TTL/Line Driver, Sine/Cosine 1Vpp) and absolute (SSI) as well as rotary and
linear.
User's interface is a scratch resistant polycarbonate keyboard fitted with 4 multifunction keys and a 7
segment 8 digit high brightness LED display. The device is also equipped with 3 status LEDs, 1 input and 3
digital outputs designed to operate dedicated functions.
The display provides an RS-232 interface for connection to a PC and configuration via free software tool.
Among the available functions:
• position indicators;
• absolute / relative counter;
• event transmitter.
It allows to display and scale both linear (millimeters, inches, fractional inches) and angular (degreses)
measurement values.
For technical specifications please refer to the product datasheet.
To make it easier to read the text, this guide can be divided into two main sections.
In the first section (from section 1 to section 4) general information concerning the safety, the
mechanical installation and the electrical connection.
In the second section (from section 5 to section 8) both general and specific information is given on the
operator's menu, the use of the keys, the setup procedure and the serial interface.
LD200
1 - Safety summary
1.1 Safety
Always adhere to the professional safety and accident prevention
regulations applicable to your country during device installation and
operation;
installation and maintenance operations have to be carried out by qualified
personnel only, with power supply disconnected and stationary mechanical
parts;
device must be used only for the purpose appropriate to its design: use for
purposes other than those for which it has been designed could result in
serious personal and/or the environment damage;
high current, voltage and moving mechanical parts can cause serious or
fatal injury;
warning ! Do not use in explosive or flammable areas;
failure to comply with these precautions or with specific warnings
elsewhere in this manual violates safety standards of design, manufacture,
and intended use of the equipment;
Lika Electronic assumes no liability for the customer's failure to comply with
these requirements.
1.2 Electrical safety
Turn OFF power supply before connecting the device;
connect following to explanation in the ”4 - Electrical connections” section
on page 16;
in compliance with 2014/30/EU norm on electromagnetic
compatibility, the following precautions must be taken:
- before handling and installing the equipment, discharge
electrical charge from your body and tools which may come in
touch with the device;
- power supply must be stabilized without noise; install EMC filters on
device power supply if needed;
- always use shielded cables (twisted pair cables whenever possible);
- avoid cables runs longer than necessary;
- avoid running the signal cable near high voltage power cables;
- mount the device as far as possible from any capacitive or inductive
noise source; shield the device from noise source if needed;
- minimize noise by connecting the unit to ground (GND). Make sure
that ground (GND) is not affected by noise. The connection point to
ground can be situated both on the device side and on user’s side.
The best solution to minimize the interference must be carried out
by the user.
MAN LD200 E 2.3.odt 1 - Safety summary 11 of 72
LD200
1.3 Mechanical safety
Install the device following strictly the information in the “3 - Mounting
instructions” section on page 14;
do not disassemble the unit;
do not tool the unit;
delicate electronic equipment: handle with care;
do not subject the device to knocks or shocks;
respect the environmental characteristics of the device.
MAN LD200 E 2.3.odt 1 - Safety summary 12 of 72
LD200
2 - Identification
Device can be identified through the order code and the serial number printed
on the label applied to its body. Information is listed in the delivery document
too. Please always quote the order code and the serial number when reaching
Lika Electronic for purchasing spare parts or needing assistance. For any
information on the technical characteristics of the product, refer to the
technical catalogue.
Warning: devices having order code ending with “/Sxxx” may have
mechanical and electrical characteristics different from standard
and be supplied with additional documentation for special
connections (Technical info).
MAN LD200 E 2.3.odt 2 - Identification 13 of 72
LD200
3 - Mounting instructions
WARNING
Installation and maintenance operations have to be carried out by qualified
personnel only, with power supply disconnected and mechanical parts
compulsorily in stop.
3.1 Overall dimensions
Insert the display without panel clips through the cut-out (approx. 89.5 W x 44
H mm / 3.523” W x 1.732” H) made in the panel.
Mount the panel clips on the sides of the display housing and tighten the
screws until fixed.
Values are expressed in millimeters
MAN LD200 E 2.3.odt 3 - Mounting instructions 14 of 72
LD200
3.2 Installation
The device is allowed to be installed and operated only within the permissible
temperature range (0°C +70°C / +32°F +158°F). Please ensure an adequate
ventilation and avoid any direct contact between the device and gases / liquids.
Before installation or maintenance, the unit must be disconnected from all
voltage sources. Furthermore it must be ensured that no danger can arise in the
event of contact with the disconnected voltage sources.
All selected wires and insulations must comply with the provided voltage and
temperature ranges. Furthermore all country and application specific standards
which are relevant for structure, form and quality of the wires must be ensured.
Indications about the permissible wire cross sections for wiring are described in
the product datasheet.
Before starting the unit for the first time it must be ensured that all connections
and wires are firmly plugged in and secured to the screw terminal blocks. All
terminal blocks (including unused ones) must be fastened by turning the
relevant screws clockwise up to the end position.
For placement, wiring, environmental conditions as well as shielding and
earthing/grounding of the supply lines you must comply with the general
standards stated for industrial automation industry and the specific shielding
instructions provided by the manufacturer.
3.3 Cleaning and maintenance
To clean the unit please just use a slightly damp (not wet!), soft cloth. For the
rear side no cleaning is necessary. For an unscheduled, individual cleaning of the
rear side the maintenance technicians or installation operators are selfresponsible.
During normal operation no maintenance is necessary. In case of unexpected
problems, failures or malfunctions the device must be shipped back to the
manufacturer for any checking, adjustment or repair (if necessary).
Unauthorized opening and repair operations can have negative effects or cause
failures to the protection measures of the unit.
MAN LD200 E 2.3.odt 3 - Mounting instructions 15 of 72
LD200
4 - Electrical connections
WARNING
Power supply must be turned off before performing any electrical connection!
4.1 CON6 connections (Power supply to the display)
Pin Vdc Vac
1 + 24Vdc ±20% 18Vac
2 0Vdc 18Vac
3 P.E. (GND) P.E. (GND)
4.2 CON1 connections (Mini-DIN connector)
Plug the Mini-DIN circular connector of Lika's SM2, SM25 or SM5 sensors on the
backside of the display. For more information refer to the technical
documentation of the magnetic sensors.
4.3 CON2 connections (RS-232 serial interface)
Pin Description
1
not connected
2 RxD
3 TxD
4
not connected
5 0Vdc
6, 7, 8, 9
not connected
For parameter setup via RS-232 interface and software tool please refer to
sections “7 - RS-232 serial interface” on page 53 and “8 - Application software
for PC” on page 65.
MAN LD200 E 2.3.odt 4 - Electrical connections 16 of 72
LD200
4.4 CON3 connections (Sine/Cosine 1Vpp)
It allows to connect a Sine/Cosine 1Vpp encoder.
Pin Description
1 0Vdc
2 +5Vdc
3 SIN + (B)
4 SIN - (/B)
5 COS + (A)
6 COS - (/A)
7 REF + (0)
1
8 REF - (/0)
1
1. Zero signal provided by the encoder can be used to activate the Preset
function. See the “5.9 Zero setting (or Preset setting)” section on page
21. To enable it set the EnAbLE 0 parameter in the specific menu to
“ON”, the counting is zero set at the rising edge of the Zero signal.
4.5 CON5 connections (Push-Pull, Line Driver, SSI)
It allows to connect an HTL/Push-Pull or a TTL/Line Driver incremental encoder /
sensor or an SSI interface absolute encoder / sensor.
Pin Description
1 0Vdc
2 +Vdc
1
3 A
4 /A
5 B
6 /B
7 0
2
8 /0
2
9 Data OUT + (SSI)
10 Data OUT - (SSI)
11 Clock IN + (SSI)
12 Clock IN - (SSI)
1. The voltage level of the power supply provided to the connected
encoder can be selected by means of jumper J1. Refer to the “4.6
Jumper J1 (Power supply to the encoder / sensor)” section in the
following page.
2. Zero signal provided by the encoder can be used to activate the Preset
function. See the “5.9 Zero setting (or Preset setting)” section on page
21. To enable it set the EnAbLE 0 parameter in the specific menu to
“ON”, the counting is zero set at the rising edge of the Zero signal.
MAN LD200 E 2.3.odt 4 - Electrical connections 17 of 72
LD200
4.6 Jumper J1 (Power supply to the encoder / sensor)
It allows to select the voltage level of the power supply provided to the
connected incremental or SSI encoder / sensor.
Position Description
Left (1-2) +Vdc = +24Vdc @ 1A
Right (2-3) +Vdc = +5Vdc @ 150mA
4.7 CON4 connections (Outputs and Input)
Pin Description
1 OUT1 +
2 OUT1 3 OUT2 +
4 OUT2 5 OUT3 +
6 OUT3 7 Preset Input 8 Preset Input +
Digital outputs scheme Digital input scheme
Outputs are open collector with optocouplers, Imax = 25 mA.
Input with optocoupler, Vin max = 30Vdc.
NOTE
Some examples of use of the input and the outputs are available in the “5.10
Preset Input function (CON4, pins 7 and 8)” section on page 22 and in the “5.11
OUT 1, OUT 2, OUT 3 output function (CON4, pins 1 … 6)” section on page 23.
MAN LD200 E 2.3.odt 4 - Electrical connections 18 of 72
LD200
5 - Functions
5.1 Start up
At switching on the unit shows the hardware/software version followed by the
device address and the current position.
Hardware version Software version
Version: H xx S yy
Device address (0 … 31): Ad zz (see on page 26)
(used for RS-232 interface connection)
5.2 Function of the LEDs
The display is equipped with three LEDs, their function is described in the
following table.
LED 1 GREEN Description
OFF measurement in millimetres or degrees
ON measurement in inches or fractional inches
See the “5.8 Displaying values in millimetres / degrees / inches / fractional inches” section on
page 21
LED 2 GREEN Description
OFF absolute display mode
ON relative display mode
See the “5.5 Absolute / relative counting mode” section on page 20
LED 3 Description
no function
NOTE
During initialisation, system checks the diagnostic LEDs for proper operation;
therefore they light up for a while.
MAN LD200 E 2.3.odt 5 - Functions 19 of 72
LD200
5.3 Function of the keys
Key Function
P
Program: it allows to scroll the items in the menu
UP: it allows to change the value of the selected
digit
Shift left: it allows to select the digit and
sometimes also to change it
*
Save: it allows to save data
Sometimes the keys are used in combination to execute specific functions. Refer
to the following sections.
5.4 Default parameters (factory settings)
Default parameter values are set at the factory by Lika Electronic engineers to
allow the operator to run the device for standard operation in a safe mode. They
are highlighted in BOLD characters in the description of the menus.
The unit can be reset to default values following the steps below:
hold down P and keys while switching the device on (“dEFPAr” must
appear);
zero set the unit (see the “5.9 Zero setting (or Preset setting)“ section on
page 21).
WARNING
This action will reset all parameters to factory default values and customised
settings will be lost. After reset you will have to repeat your individual set-up
procedure.
NOTE
When you need to connect a new device to LD200 please upload the default
parameters of the display before configuring it.
5.5 Absolute / relative counting mode
Press P and * keys to switch from absolute (LED2 = OFF) to relative display
mode (LED2 = ON) and vice versa. Default display mode is “absolute”. Absolute /
relative display mode function is not active with SSI encoders / sensors.
MAN LD200 E 2.3.odt 5 - Functions 20 of 72
LD200
5.6 Memory on power down (for incremental and 1Vpp encoders / sensors)
On power down the device automatically stores the last position value on
internal memory.
WARNING
If the position of the connected encoder changes while the power of the display
is off, at the next start up the device will display the last position stored before
switching off, not the new position.
5.7 Offset
The offset value is the difference between the value displayed and the value
that is actually measured. It is added to the current position value to indicate,
for example, the thickness of a tool.
When the current position value is displayed, press key to add the OFFSEt
value to it (“OFFSEt” will be displayed); press key again to confirm.
If the OFFSEt value is already used, press key to subtract it from the current
value (“nO OFS” will be displayed); press key again to confirm.
Display value = current position + PrESEt value + OFFSEt value
For more information on the offset value refer to the OFFSEt parameter in the
specific menus.
5.8 Displaying values in millimetres / degrees / inches / fractional inches
When you press key for 3 s. the display switches the engineering unit from
millimeters/degrees (LED1 = OFF) to inches and further to fractional inches
(LED1 = ON). Default display mode is millimetres.
Refer to the Unit parameter in the specific menus.
5.9 Zero setting (or Preset setting)
The Preset function of the display is meant to show a desired value according to
the position value provided by the connected encoder. The chosen position will
get the value set next to the PrESEt parameter (see the specific menus) and all
the previous and the following positions will get a value according to it. This
function is useful, for example, when we want to pair the zero position of the
application with the zero value that is displayed.
Reset/preset function can be activated in the following ways:
via keyboard: press * key for 3 seconds to access the Preset function
("rESEt" will be displayed). Press P key to exit function (no reset operation is
carried out). Press * key twice to confirm the preset execution ("donE" will
be displayed);
via Preset digital input: see the “5.10 Preset Input function (CON4, pins 7
and 8)” section in the following page;
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LD200
via Encoder Zero signal: refer to the EnAbLE 0 parameter in the specific
menus;
by transmitting the zero setting command via serial port; please refer to the
“7 - RS-232 serial interface” section on page 53;
using the software tool via serial port; please refer to the “8 - Application
software for PC” section on page 65.
For more information on the preset / zero setting function please refer to the
description of the PrESEt parameter in the specific menus.
NOTE
In the absolute counting mode setting the preset/reset affects also the relative
counting mode (see the “5.5 Absolute / relative counting mode” section on page
20).
In the relative counting mode setting the preset/reset does not affect the
absolute counting mode (see the “5.5 Absolute / relative counting mode” section
on page 20).
Display value = 0 + PrESEt value
NOTE
See also OUT 3 output in the “5.11 OUT 1, OUT 2, OUT 3 output function (CON4,
pins 1 … 6)” section on the next page to zero set the connected encoder.
5.10 Preset Input function (CON4, pins 7 and 8)
The Preset input function is used to execute the Set Preset function (see the
previous “5.9 Zero setting (or Preset setting)” section). The Preset signal has to
be at logic level HIGH (Vin between +10Vdc and +30Vdc) for 100 msec.
minimum.
Refer to the EnAb. In parameter in the specific menus to enable this function.
Display value = 0 + PrESEt value
WARNING
Input with optocoupler, Vin max = 30Vdc.
Recommended wiring diagrams:
MAN LD200 E 2.3.odt 5 - Functions 22 of 72
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