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Manual
LDM41P and LDM42P
Version 3.5
Page 2
LDM41P and LDM42P Manual
Page 2 ASTECH GmbH
Dear User,
You are advised to carefully read this User Manual before powering on the
LDM41P and LDM42P Laser distance measuring sensor for the first time.
This is necessary to ensure that you will be able to utilize all the capabilities
and features which your new acquisition provides.
This technology is subject to continuously ongoing development.
Editorial deadline: June 2016
Firmware version: ≥ 7.05 and 8.06
Manual version: V 3.5
FIle: Manual_LDM41-42P_EN_V3.5.docx
Note:
Proper care has been used in compiling this document. No liability will be
accepted in the event of damage resulting from failure to comply with the
information contained herein.
Revisions history
Manual Version
Date
Changes
3.5
29.06.2016
Ch. 8.1, Fig. 7, MTBF
E19 added
3.4
16.03.2015
New design
ASTECH GmbH, Schonenfahrerstr. 5, D-18057 Rostock
Internet: www.astech.de E-Mail: [email protected]
Phone: +49 (0)381 / 44073-0 Fax: +49 (0)381 / 44073-20
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LDM41P and LDM42P Manual Content
ASTECH GmbH Page 3
I. Content
1 General ....................................................................................................... 6
2 Safety Instructions ..................................................................................... 8
2.1 General Safety Instructions ............................................................... 8
2.2 Intended & Conforming Use ............................................................. 8
2.3 Nonconforming use ........................................................................... 8
2.4 Laser Classification ............................................................................ 9
2.5 Electric Supply ................................................................................. 10
2.6 Important Operating Advice ........................................................... 10
3 Technical Data .......................................................................................... 11
4 Mounting ................................................................................................. 13
5 Electrical Connection ............................................................................... 15
5.1 LDMRear-Side Cover Terminals ....................................................... 15
5.2 Assignment of Terminals ................................................................. 16
5.3 Profibus DP ...................................................................................... 16
5.4 RS232 Serial Interface ..................................................................... 16
5.5 Programming Cable ......................................................................... 17
5.6 Shield and Grounding ...................................................................... 18
6 Limiting Values for Voltages .................................................................... 19
7 Start up .................................................................................................... 20
8 Parameters and Control via RS232 .......................................................... 21
8.1 General ............................................................................................ 21
8.2 DT – distance tracking ..................................................................... 24
8.3 DS – distance tracking (<7 m) .......................................................... 24
8.4 DW – distance tracking with target board (10 Hz) .......................... 24
8.5 DX – distance tracking with target board (50 Hz) ........................... 25
8.6 DF – distance measurement with external trigger .......................... 25
8.7 DM – distance measurement .......................................................... 26
8.8 TP – internal temperature [°C] ........................................................ 26
8.9 SA – display/set average value [1..20] ............................................ 26
8.10 SD – display/set display format [d/h/s}] ......................................... 26
8.11 ST – display/set measure time [0..25] ............................................. 27
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Content LDM41P and LDM42P Manual
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8.12 SF – display/set scale factor ............................................................ 28
8.13 SE – display/set error mode [0/1/2] ............................................... 29
8.14 AC – display set ALARM center ....................................................... 29
8.15 AH – display/set ALARM hysterese ................................................. 30
8.16 AW – display/set ALARM width ...................................................... 30
8.17 HO – display/set Temperature for heating on ................................ 30
8.18 HF – display/set Temperature for heating off ............................... 31
8.19 TDx y – display/set trigger delay trigger level ................................. 31
8.20 BR – display/set baud rate [2400..38400] ...................................... 31
8.21 AS – display/set autostart command .............................................. 32
8.22 OF – display/set distance offset ...................................................... 32
8.23 SO – set current distance to offset ................................................. 32
8.24 LO – Laser on................................................................................... 32
8.25 LF – laser off .................................................................................... 32
8.26 PA – display settings ....................................................................... 33
8.27 PR – reset settings .......................................................................... 33
9 Interface Connection ............................................................................... 34
9.1 Profibus DP ..................................................................................... 34
9.2 Serial Interface RS232 ..................................................................... 36
9.3 Output Format Ethernet and RS232 ............................................... 37
9.4 Digital Switching Output (Alarm) .................................................... 38
9.5 Trigger Input ................................................................................... 40
10 List of Commands .................................................................................... 41
11 Error Codes RS232 and Profibus .............................................................. 42
12 GSD Data .................................................................................................. 43
13 Contact Assignment for Cable Connectors .............................................. 45
14 EG Declaration of Conformity .................................................................. 46
15 Part Numbers........................................................................................... 47
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LDM41P and LDM42P Manual Content
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II. List of Figures
Figure 1 : Measurement principle ...................................................................... 6
Figure 2 : Warning Sign Laser Radiation Class 2 ................................................. 9
Figure 3 : Mounting drawing ............................................................................ 13
Figure 4 : Offset against zero-edge ................................................................... 14
Figure 5 : LDM41P and LDM42P terminals ....................................................... 15
Figure 6 : Termination RS232............................................................................ 17
Figure 7 : LDMTool ............................................................................................ 21
Figure 15 : Digital switching output behavior ................................................... 39
Figure 8 : GSD data and bitmap ........................................................................ 44
Figure 9 : Contact assignment .......................................................................... 45
III. List of Tables
Table 1 : Technical data .................................................................................... 11
Table 2 : LDM41P and LDM42P terminals ........................................................ 15
Table 3 : Pin assignment power supply, alarm and trigger ............................... 16
Table 4 : Pin assignment Profibus DP ............................................................... 16
Table 5 : Pin assignment RS232 ........................................................................ 17
Table 6 : Pin assignment programming cable ................................................... 18
Table 7 : Input voltages..................................................................................... 19
Table 8 : Output voltages .................................................................................. 19
Table 9 : Command list LDM41P and LDM42P ................................................. 23
Table 10 : Output format .................................................................................. 26
Table 11 : Examples of scale factor ................................................................... 29
Table 12 : Meaning of SE .................................................................................. 29
Table 13 : Meaning of Profibus DP modes ........................................................ 35
Table 14 : Profibus error codes ......................................................................... 35
Table 15 : LDM41P and LDM42P command list ................................................ 41
Table 16 : Error codes ....................................................................................... 42
Table 17 : Part numbers.................................................................................... 47
Page 6
General LDM41P and LDM42P Manual LDM41P and LDM42P Manual
Page 6 ASTECH GmbH
1 General
The LDM41P AND LDM42P are Laser sensors to measure distances from 0.1 m
to more than 100 m with pinpoint accuracy.
A given target can be clearly identified with the help of a red Laser sighting
point. In terms of operating reach, the LDM41P and LDM42P performs
depending on the reflectance, morphology and qualities of the target to be
measured.
The sensor works based on comparative phase measurement. It emits
modulated Laser light which is diffusely reflected back from the target with a
certain shift in phase to be compared with a reference signal. From the
amount of phase shift, a required distance can then be determined with
millimeter accuracy.
Figure 1 : Measurement principle
A distance measuring cycle can be triggered in three different ways:
By sending a command from the PC or another equivalent control
unit
By making appropriate prior parameter settings for the auto start
command and applying supply voltage
By external triggering (in remote-trigger mode).
For a more detailed description of these three trigger options, you should
consult chapter 8, Parameters and Control via RS232 of this User Manual.
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LDM41P and LDM42P Manual General
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Special performance features are:
Provides high accuracy and great reach under extreme outdoor
temperatures.
Works in a wide range of operating voltages from 10 V= to 30 V= from an
on-board vehicle supply point, an industrial direct voltage supply net or a
DC power pack.
Features consistently low power consumption of <3.5 W
1
(without I
Alarm
)
Up to 30 m reach for distance measurement, with potential for more than
100 m reach if additional reflectors
2
are mounted onto the target
(depending on reflectance and environmental conditions).
Visible Laser beam for easier sighting.
Output and control via Profibus DP
Measured values can be displayed in meters, decimeters, centimeters, feet
and inches due to.
Option for remote triggering of a measurement from an external trigger
device.
Large range of accessories available
1
inactive internal heating for devices with internal heating (LDM41P-h and LDM42P-h)
2
e.g. 3M, self adhesive foil white non glossy or foil 3290 for longer distances
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Safety Instructions LDM41P and LDM42P Manual LDM41P and LDM42P Manual
Page 8 ASTECH GmbH
2 Safety Instructions
2.1 General Safety Instructions
These safety and operating instructions should be carefully read and followed
during practical work with the LDM41P and LDM42P.
There is danger of Laser radiation or electrical shock. For necessary
repair work, the LDM41P and LDM42P may not be opened by anyone
other than Manufacturer personnel. Unauthorized intervention into
the inner product space will void any warranty claims.
Compliance with all specified operating conditions is necessary.
Failure to observe advisory notes or nonconforming product usage may cause
physical injury to the user or material damage to the LDM41P and LDM42P.
Cable connectors must not be plugged or unplugged under voltage.
Remember to turn voltage supply off before you begin working on cable
connections.
2.2 Intended & Conforming Use
Measurement of distances
Special measuring functions
Compliance with prescribed temperatures for operation/storage
Operation at correct voltage level
Application of specified signal levels to the appropriate data lines
2.3 Nonconforming use
Do not operate the LDM41P and LDM42P in any other way than
described under "Intended & Conforming Use" above and only in a
proper working condition
Safety devices must not be defeated or otherwise rendered
ineffective
Information and warning signs must not be removed
Repair work on the LDM41P and LDM42P must not be carried out
by anyone other than authorized personnel.
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LDM41P and LDM42P Manual Safety Instructions
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Refrain from using the LDM41P and LDM42P without certified
protection in an explosive environment
Measurement with the LDM41P and LDM42P pointed at the sun or
other strong light sources may produce faulty results
Measurement of targets with poor surface reflectance in a strongly
reflecting environment may also result faulty measurements.
Measurement of strongly reflecting surfaces may deliver faulty
results.
Measurement performed through transparent optical media, for
example glass, optical filters, Plexiglas, etc. may equally produce
incorrect results.
Measurement on translucent objects (materials allow light to pass
through, but are not transparency, e.g. polystyrene, wax, different
plastics etc.) can give a too large measured value, since also light is
reflected by deeper layers
Rapidly changing measuring conditions are likely to falsify the result
of measurement
2.4 Laser Classification
The LDM41P and LDM42P is a Class 2 laser product, ≤1 mW as stipulated in
EN60825-1:2007, Class 2.
Caution:
There is Class 2 Laser radiation. Do not stare into beam!
Figure 2 : Warning Sign Laser Radiation Class 2
The Laser power is limited to maximum 1 mW. The Laser radiation is visible. A
short-term exposure (duration up to 0.25 s) is harmless to the eye.
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Safety Instructions LDM41P and LDM42P Manual LDM41P and LDM42P Manual
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Users are instructed by Laser warning sign (see Figure 2) to do not stare into
the beam. They have to protect themselves by turn the head and/or closing
the eyes and by avoid a long look into the beam.
Do not direct the Laser beam onto persons.
The sensor can use without any additional safety protection.
2.5 Electric Supply
Use only 10 V to 30 V DC (direct voltage) for LDM41P and LDM42P operation.
Use only the specially designated connector terminal for voltage supply.
Specified signal levels must not be exceeded, in order to guarantee correct
data communication.
2.6 Important Operating Advice
To make full use of the system’s inherent performance capabilities and
achieve a long service life, you should always follow these operating rules:
Do not turn the module on if there is fogging or soiling on its optical
parts
Do not touch any of the module's parts with bare hands.
Proceed with care when removing dust or contamination from
optical surfaces!
Prevent shock impacts during transport and use of the LDM41P and
LDM42P
Prevent overheating of the LDM41P and LDM42P.
Prevent major temperature variances during LDM41P and LDM42P
operation
In accordance with IP65 internal protection standards, the LDM41P
and LDM42P is designed to be splash proof and dustproof.
Read these safety and operating instructions with due care and
follow them in practical use.
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LDM41P and LDM42P Manual Technical Data
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3 Technical Data
Table 1 : Technical data
Measurement range3
0.1 m up to 30 m with natural surfaces,
depending on target reflectance or reflectors
more than 100 m achievable4
Measuring accuracy5
2 mm under defined measuring conditions6
3 mm (+15 °C up to +30 °C)
4 mm in DS mode <0.5 m (+15 °C … 30 °C)
5 mm (-10 °C up to +50 °C)
Resolution7
0.1 mm, user scalable, standard 1 mm
Reproducibility
0.5 mm
Measuring time
0.24 to 6 s setup or auto Mode DT
0.1 s (10 Hz) mode DW at white surface
20 ms (50 Hz) mode DX at white surface
(only LDM42P)
Target motion speed
≤4 m/s in DX-Mode (LDM42P only)
Acceleration
≤2.5 m/s² in DX-Mode (LDM42P only)
Operating temperature
-10 °C up to +50 °C
-40 °C up to +50 °C (LDM41P-h and LDM42P-h
only)
Storage temperature
-40 °C up to +70 °C
Supply voltage
10 V ... 30 V DC (protected against polarity
reversal)8
Power consumption
Depending on operation mode
< 2.5 W in Standby
< 3.5 W for distance tracking
< 24 W with heating active (only with -h option)
3
dependent on target reflectance, stray light influences and atmospheric conditions
4
e.g. 3M, self adhesive foil white non glossy
5
statistic spread 95 %
6
for measurement at a planar white target surface in continues movement or still standing, +15
up to +30 °C
7
dependent on target reflectance, stray light influences and atmospheric conditions
8
Please use only 24V DC For devices with heating (LDM41P-h and LDM42P-h) The heater is
connected directly to the power supply.
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Profibus interface
Profibus DP norm slave, auto detect up to
12 Mbit, ID Number 0x2079 (8313),
13 Byte IN, 1 Byte OUT
Data interface
RS232, baud rate 9600 (2400..38400), ASCII,
Format 8N1 (fix), receive path is deactivated
after connecting to the Profibus master!
Digital switching output
„high-side-switch“, programmable switching
threshold and hysteresis, rated for max. load of
0.5 A, HIGH = UB - 2 V, LOW < 2 V
Trigger input9
External trigger, trigger pulse 3 up to 24 V, pulse
length≥ 1 ms, start of measurement 5 ms +
trigger delay, trigger slope and delay can be set
(0 ms ... 9999 ms),
EMC
EN 61326-1
Shock resistance
10 g / 6 ms
Persistence shock DIN ISO 9022-3-31-01-1
Laser Class
Laser class 2, under EN60825-1:2007, Class 2
Wave length
650 nm (red visible)
Laser divergence10
0.6 mrad
Laser angle tolerance
Better than ± 1° to the ground plane
MTBF
30,000 h, 24/7, Operating temp. +25 °C
Connector
12-pol. M18-male socket, Binder Serie 423
Dimensions (LxWxH)
212 mm x 96 mm x 50 mm
Mounting
100 mm x 85 mm, 4 x M6 holes
Weight
approx. 850 g
Protection class
IP 65 (spatter water and dust protection)
9
trigger function is not available for devices with internal heating (LDM41P-h and LDM42P-h)
10
at 10 m distance the beam diameter is 6 mm, at a distance of 50 m it is 3 cm and at a distance of
100 m it is 6 cm
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LDM41P and LDM42P Manual Mounting
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4 Mounting
The casing consists of a rugged, corrosion-resistant extruded aluminum profile
with front-side and rear-side covers also of corrosion-resistant design. Four
mounting holes are provided in the base plate for mounting the LDM41P and
LDM42P.
Figure 3 : Mounting drawing
To protect the range finder’s optical surfaces from dust, physical contact and
impacts, etc., a protection tube has been attached to the casing. Please note
that measurement cannot be guaranteed to function correctly if the
protection tube is removed incorrectly or by unqualified personnel!
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The interface connector is located on the back cover. Interface cables with
different length are available (standard 2 m, optionally 5 or 10 m).
Figure 4 : Offset against zero-edge
The LDM41P and LDM42P’s zero-point is located 7 mm behind the outer
surface of the front cover or 137 mm before the back cover outside face
respectively. This zero-point has been introduced for constructional design
reasons. It can be compensated with the help of parameter “OF“ (see section
8.22 OF – display/set distance offset)
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LDM41P and LDM42P Manual Electrical Connection
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5 Electrical Connection
5.1 LDMRear-Side Cover Terminals
Connector terminals are located on the rear-side cover of the device. The
terminals consist of 4 buses for metal circular plug-in connectors (from
Binder), or compatible connectors, sealed against the casing in compliance
with IP 65 requirements. This connector type guarantees optimised screening
and a high IP level.
The following connection plugs should be used:
Table 2 : LDM41P and LDM42P terminals
Quantity
Connector Type
Use
1
4-pin male cable connector
(series 715 B from Binder)
Profibus DP Output
1
4-pin female cable connector *)
(series 715 B from Binder)
Profibus DP Input
1
5-pin male cable connector
(series 713 from Binder)
RS232
1
5-pin female cable connector
(series 713 from Binder)
Power supply, trigger input
and digital output
*) until Dec. 2006 4-pin male cable connector
Note: Various connectors and cables are available. Please ensure that
only shielded connectors and shielded cables are used.
Profibus DP
Output
Profibus DP
Input
RS232
Power supply,
trigger input
and digital
output
Figure 5 : LDM41P and LDM42P terminals
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5.2 Assignment of Terminals
The required power supply is 10 to 30 V DC.
The trigger input allows for a distance measurement via an external signal in
the form of a voltage impulse from 3 to 24 V (only DF mode, please see
Chapter 8).
Table 3 : Pin assignment power supply, alarm and trigger
Pin
Description
Colour
Comment
1
VCC
brown
Power supply 10 to 30 V
2
ALARM
white
Digital Output ( VCC – 2 V)
3
GND
blue
Power supply 0 V
5
Trigger
gray
Trigger input 3 to 24 V
(ground potential GND)
5.3 Profibus DP
The LDM41P and LDM42P has two terminals (input and output) for circular
plug-in connectors (series 715 B for Profibus DP from Binder) conforming to
the relevant standards.
Table 4 : Pin assignment Profibus DP
Pin
Description
Comment
1
+UB
Power supply for active terminal resistance
2 A Profibus signal line A (green)
3
0 V
Power supply for active terminal resistance
4 B Profibus signal line B (red)
Note: Only use connection plugs and Profibus cables that conform to
the relevant standards. If the LDM41P and LDM42P is to be
connected at the end of the bus, then a terminal resistance must be
connected to the output terminal for the Profibus DP.
5.4 RS232 Serial Interface
The RS232 interface was originally designed as a PC interface only. It has now
become the standard for serial data transfer for short distances. It is subject to
interference when used for longer distances, in particular, in environments
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LDM41P and LDM42P Manual Electrical Connection
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with interfering high-frequency electromagnetic radiance. As a result, this
interface should only be used for configuring the LDM41P and LDM42P. Please
configure using the programming cable and the LDMTool program.
Following successful configuration, remove the programming cable and
protect the terminal with a sealing plug.
Note: Please configure the LDM41P and LDM42P prior to connecting
the Profibus. The receiving line of the RS232 serial interface is
deactivated after connecting to the Profibus master.
Please observe the RS232 standard. The maximum extension of the RS232
lines is 15 m.
Table 5 : Pin assignment RS232
Pin
Description
Colour
Comment
1
RxD
brown
Receiving line
2
TxD
white
Transmit line
3
GND
blue
Ground potential
Note: Following successful programming, remove the RS232 cable
and protect the RS232 cable connector with the enclosed sealing plug
against entry of dirt. If the cable is to remain connected to the device,
then a terminal resistance must be attached.
Figure 6 : Termination RS232
Ensure that no data line ends are left open,
since they may be subject to interference
(EMC).
A terminator circuit should be installed when
the RS232 is unconnected.
This circuit must be provided by the customer
(see diagram on the left).
5.5 Programming Cable
Connection to a PC requires the following cable with SUB-D 9 F connectors.
The TxD and RxD signals of the LDM41P and LDM42P and the PC connection
are crossed. The colours apply to the optional programming cable.
TxD Pin 2
RxD Pin 1
GND Pin 3
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Table 6 : Pin assignment programming cable
Pin LDM 4xP
Description
Colour
Pin SUB-D 9 F
Description
1
RxD
brown
3
TxD
2
TxD
white
2
RxD
3
GND
blue
5
GND
5.6 Shield and Grounding
Cable shields must be grounded with low resistance. Only high quality shielded
cables should be used.
Carrier bases and control boxes should have equal potential. Potential
differences could lead to electrical currents and may cause EMC problems (no
correct measurement function or switching the gauge off or on is necessary).
If no potential equalization is possible, then mount the LDM41P and LDM42P
isolated from the carrier base (use nylon screws and washers). Connect the
screen with mass to the cable end. This way of assembly should also be used
when installing the LDM41P and LDM42P inside vehicles.
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LDM41P and LDM42P Manual Limiting Values for Voltages
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6 Limiting Values for Voltages
Input voltages:
Table 7 : Input voltages
Terminal point
Voltage
Comment
VCC
+10 V ... +30 V
Pole-reversal-protected
TxD
±13.2 V
Short-circuit-proof
RxD
±25 V
Short-circuit-proof
TRIG11
±25 V
Short-circuit-proof
Output voltages:
Table 8 : Output voltages
Terminal point
Voltage
Comment
TxD
±5.4 V
± 5 V at 3 k load
Alarm
VCC – 2 V
Level depending on VCC
Limiting values of voltages, loads and logical levels comply with relevant RS232
and Profibus standards.
11
Trigger function is not available for devices with internal heating (LDM41P-h and LDM42P-h)
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Start up LDM41P and LDM42P Manual LDM41P and LDM42P Manual
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7 Start up
Ensure that all cable ends are protected against short circuit prior to turning
on the power supply!
Connect cable terminals as required for the particular operating mode. A polereversal protection is included so as to prevent the destruction of electronic
components.
Connection to the Profibus master should only take place following start up!
Note: Please turn on the LDM41P and LDM42P prior to connecting
the Profibus. The receiving line of the RS232 serial interface is
deactivated after connecting to the Profibus master.
Turning on the LDM41P and LDM42P requires a PC with a corresponding
COM1 data interface, an optional programming cable and a terminal
programme. We recommend the use of the following programme: LDMTOOL
(Version 4.5 or higher).
When turning on the LDM41P and LDM42P, it must be properly installed at
the designated operation site, aimed at the target, and kept in a stable
position. Targets to be measured (e.g. machine or system components) should
preferably have a light and homogeneous surface. Several optional reflex foils
are available.
Caution: Do no use any retro reflectors!
Alignment of the LDM41P and LDM42P is facilitated by a visible laser
beam12 that can easily be turned on from a PC.
Operating voltage supply occurs via the power supply terminal (see Chapter
5).
12
Depending on ambient light and target conditions
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LDM41P and LDM42P Manual Parameters and Control via RS232
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8 Parameters and Control via RS232
8.1 General
It is easy to configure the LDM41P and LDM42P by using a PC, as it provides a
wide range of operating functions. Configuration should take place prior to
connecting to the Profibus.
Caution: If the LDM41P and LDM42P has been configured via the
Profibus DP Master, then the PC interface (RS232) can no longer be
used to enter commands. However, the LDMTool programme can be
used for display distance values.
By selecting the ID[Enter] command, you may call up the menu with the
available set-up commands.
Figure 7 : LDMTool
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Parameters and Control via RS232 LDM41P and LDM42P Manual LDM41P and LDM42P Manual
Page 22 ASTECH GmbH ASTECH GmbH
Prior to commencing measurements, desired parameter settings can be
entered via a smart selection procedure, so as to adapt the LDM41P and
LDM42P in an optimal manner to specific environments and measuring tasks.
Such settings will be stored when turning off the LDM41P and LDM42P.
They can only be changed by entering new values or by reinstalling the
standard parameter settings.
Command entries are not case-sensitive. This means that small and capital
lettering can be used for commands.
Any command must be terminated by a hexadecimal 0Dh (carriage return)
character.
Where decimal digits are to be entered, they must be separated by period
(2Eh).
For command parameter entries, one must distinguish between parameter
settings and parameter queries.
Querying is achieved with a command in simple format, e.g. (for alarm center
parameters):
AC[Enter]
For parameter setting, a new value must be added after the command with no
delimitation sign in between, for example:
AC20.8[Enter]
In the given example, the alarm center will be set to 20.8.
Note: The LDM41P and the LDM42P are not equipped with an
analogue current output. Therefore the configuration commands for
the analogue output cannot be used for the LDM41P and LDM42P.
However, they do ensure compatibility with the LDM41A and
LDM42A (without Profibus DP).
The following is a short overview of the commands:
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LDM41P and LDM42P Manual Parameters and Control via RS232
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Table 9 : Command list LDM41P and LDM42P
Command
Description
DT
Start distance tracking
DS
Start distance tracking (< 7 m)
DW
Start distance tracking on white target at 10 Hz
DX
Start distance tracking on white target at 50 Hz (nur LDM42P)
DF13
Start remote triggered single distance measurement
DM
Start single distance measurement
TP
Queries inner temperature
SA
Queries/sets floating average value(1...20)
SD
Queries/set output format (dez/hex/sig)
ST
Queries/set time to measure(0...25)
SF
Queries/set scale factor
SE
Queries/set Error Mode (0, 1, 2)
AC
Queries/set alarm center
AH
Queries/set alarm hysteresis
AW
Queries/set alarm width
HO14
Queries/set temperature for heating on
HF14
Queries/set temperature for heating off
TD
Queries/set trigger delay and level
BR
Queries/set baud rate
AS
Queries/set auto start
OF
Queries/set offset
SO
Sets current distance as offset
LO
Turns Laser on
LF
Turns Laser off
PA
Displays all parameter values
PR
Resets all parameters to standard values (don't use)
13
Trigger function is not available for devices with internal heating (LDM41P-h and LDM42P-h)
14
Only for devices with internal heating (LDM41P-h and LDM42P-h)
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8.2 DT – distance tracking
Input parameter SA, SD, SE, SF, ST, OF
Output RS232/RS232, digital switching output, analog output
DT mode can be chosen for distance measurement of different kinds of
surfaces (varying reflectance). In this type of distance tracking mode, the
LDM41P and LDM42P uses internal algorithms to continuously evaluate the
quality of the Laser radiation signal that is coming back. This may cause longer
measuring times in the case of poor reflectance or sudden jumps in distance.
The minimum time to measure is 240 ms, the maximum time is 6 s. If the
measuring signal fails to reach a specified quality within six seconds, an error
message is output.
The time to measure may also be limited by setting the ST parameter to a
desired value. ESC stops the measurement.
8.3 DS – distance tracking (<7 m)
Input parameter SA, SD, SE, SF, ST, OF
Output RS232/RS422, digital switching output, analog output
Operation in DS mode makes sense where different types of surfaces have to
be measured at close range up to 7 m. Compared to DT measuring mode, it
allows a higher measurement rate. Within the range from 0.1 m to 0.5 m,
measuring accuracy is restricted (± 4 mm). Measuring time (time to measure)
can be limited via ST parameter settings.
ESC stops the measurement.
8.4 DW – distance tracking with target board (10 Hz)
Input parameter SA, SD, SE, SF, OF
Output RS232/RS422, digital switching output, analog output
DW mode performs at a steady measuring rate of 10 Hz. As a necessary
precondition for measured values to be stable, a white target board must be
placed at the selected object. There must be no sudden jumps in distance
greater than 16 cm within the measuring field!
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ESC stops the measurement.
8.5 DX – distance tracking with target board (50 Hz)
Input parameter SA, SD, SE, SF, OF
Output RS232/RS422, digital switching output, analog output
DX mode performs at a steady measuring rate of 50 Hz (only LDM42). As a
necessary precondition for measured values to be stable, a white target board
must be placed at the selected object.
This measurement mode is intended in the first place for objects performing
homogeneous motion up to 4m/s. For higher rates of measurement,
preceding measured values will be included in the process to calculate a
currently measured value. There must be no sudden jumps in distance greater
than 16 cm within the measuring field!
Caution: To prevent transmission problems, please use 9600 baud
as the minimal baud rate for DX Mode!
8.6 DF – distance measurement with external trigger
15
Input parameter SD, SE, SF, ST, OF, TD, ST, SA, RM
Output RS232/RS232, digital switching output, analog output
DF mode allows a measurement that is triggered by an external trigger pulse.
Initially, after selecting this mode, the operator does not receive any response.
As soon as the trigger pulse has been detected, the LDM41P and LDM42P will
send data and switches to digital and/or analog output.
Settings for trigger delay (delay) and trigger slope can be defined via
parameter TD (see 8.19 TDx y – display/set trigger delay trigger level).
With ST=1 the maximum trigger frequency should not exceed 3.5 Hz.
15
Trigger function is not available for devices with internal heating (LDM41P-h and LDM42P-h)
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8.7 DM – distance measurement
Input parameter SD, SE, SF, ST, OF
Output RS232/RS232, digital switching output, analog output
DM mode triggers a single measurement (single shot)
8.8 TP – internal temperature [°C]
TP queries the value of the inner LDM41P and LDM42P temperature.
Note: In tracking mode, the inner temperature may exceed the surrounding
temperature level by as much as 10 K.
8.9 SA – display/set average value [1..20]
SA allows you to calculate a floating average value from 1 to 20 measured
values. Calculation is based on this formula:
Average value:
Standard setting is 1 (no average).
8.10 SD – display/set display format [d/h/s}]
SD selects the output format of measured value data. There are three modes
available:
Table 10 : Output format
Parameter
Output
Format
d
decimal
xxx.xxx<CR><LF>
x=0…9
h
hexadecimal
<SPACE>xxxxxx<CR><LF>
x=0...F
s
decimal with signal quality
xxx.xxx<SPACE>yyyyyy<CR><LF>
x=0…9; y=0…9
SD affects all commands that output a distance value.
An output value is calculated from a given measured distance value (in mm),
multiplied by the scale factor SF.
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Negative distance values are output in two’s complement notation.
The value for the signal quality varies between 0 and 1024. 0 means a bad
signal quality while 1024 indicates a very good signal quality.
Examples:
Distance = 4,996 m, SF1
dec: 004.996<CR><LF>
hex: <SPACE>001384<CR><LF>
(= 4996 mm × SF1)
dec+sig: 004.996_000005<CR><LF>
(bad signal quality)
dec+sig: 004.996_000985<CR><LF>
(good signal quality)
Distance = 4,996 m, SF10
dec: 049.960<CR><LF>
hex: _00C328<CR><LF>
(= 49960 = 4996 mm × SF10)
dec+sig: 049.960_000005<CR><LF>
Error case
dec/hex: E15<CR><LF>
(see 11 Error Codes RS232 and Profibus)
8.11 ST – display/set measure time [0..25]
Measuring time is directly conditional on the selected measuring mode. As a
general rule, one may say: the poorer the reflectance of the surface of a
particular target, the more time the LDM41P and LDM42P will require to
determine the distance with specified accuracy. For example, if error message
E15 is output because of poor reflectance and insufficient time to measure,
this latter setting must be increased.
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The available value range for measuring time is 0 to 25. Basically, the greater
the time setting is the more time will be available for measurement and the
lower the resulting measuring rate.
An exception there from is zero-value. In this case, the LDM41P and LDM42P
automatically picks the smallest possible time value for measurement!
The LDM41P and LDM42P comes factory-set with ST = 0.
ST is effective in the DT, DF and DM mode of operation.
The measuring time setting option can also be used to modify the measuring
rate, for example, in order to restrict the data volume or for synchronization
purposes. Measuring time can only be set as an approximate value, because
the underlying principle of measurement is subject to certain variances that
cannot be accounted for:
DT measuring mode → measuring time= ST x 240 ms (except ST = 0)
DS measuring mode → measuring time = ST x 150 ms (except ST = 0)
Example:
The target distance is 25 m, but the target’s reflectance is not ideal. With a
measuring time setting of ST 2, E15 will be output following measurement.
The user must increase the time (ST > 2) or set auto (ST 0) to measure in this
case!
One should work in DW or DX measuring mode where stable
measuring times are required.
8.12 SF – display/set scale factor
SF multiplies a calculated distance value with a user-selectable factor for
changes in resolution or outputs in a different unit of measure. The scale
factor may also be negative. Standard setting is 1.
The scale factor influence the output of measurement results, Offset (OF),
Alarm Centre (AC), Alarm Hysteresis (AH), Range Begin (RB) and Range End
(RE)!
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Table 11 : Examples of scale factor
Scale factor
Resolution
Output
Output Unit
SF1
1 mm
012.345
m
SF10
0.1 mm
123.450
dm
SF1.0936
0.01 yard
013.500
yard
SF3.28084
0.01 feet
040.501
feet
SF0.3937
1 inch
004.860
100 inch
SF-1
1 mm
-12.345
m
Note: Following a change in the scale factor, the settings for digital
and/or analog output and offset must be matched accordingly!
8.13 SE – display/set error mode [0/1/2]
SE (error mode) allows you to configure the behavior of the digital switching
output (alarm) and/or the analog output following an error message (E15, E16,
E17). Depending on the particular LDM41P and LDM42P application
environment, error messages have to be handled in different ways.
Available setting options are 0, 1 and 2 with the following effects in the case of
an error:
Table 12 : Meaning of SE
SE
Digital switching output (Alarm)
Analog output (4 -20 mA)
0
ALARM of latest valid
measurement
Outputs current of last valid
measurement
1
Positive alarm hysteresis = LOW
Negative alarm hysteresis = HIGH
RE >RB: Current =3 mA
RE <RB: Current =21 mA
2
Positive alarm hysteresis = HIGH
Negative alarm hysteresis = LOW
RE >RB: Current =21 mA
RE <RB: Current =3 mA
8.14 AC – display set ALARM center
AC sets the beginning of the distance range, for which the switching output
will be turned active. The length of this active range can be set using the AW
parameter.
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AC must be selected in keeping with the currently set SF scale factor (see 9.4
Digital Switching Output (Alarm)).
8.15 AH – display/set ALARM hysteresis
AH allows you to make parameter settings for the switching hysteresis at the
beginning and the end point of the active range of the switching output.
AH must be selected so it is properly matched to the currently valid scale
factor (SF).
The mathematical sign of AH can be used to set an active state logic level:
Positive sign (“+”): active range is HIGH-active.
Negative sign (“-“): active range is LOW-active.
No sign setting means positively-signed (see 9.4 Digital Switching Output
(Alarm)).
8.16 AW – display/set ALARM width
AW sets the length of the active range, beginning at AC.
AW settings must be made in agreement with the currently valid SF scale
factor.
AW is always equal or greater than “0” (zero).
AW is always equal or greater than |AH| (the amount of AH).
Standard setting is 100000 – means off.
8.17 HO – display/set Temperature for heating on
16
HO displays/sets the temperature value at which the internal heating is
switched on. The values can be varied between -40°C and 70°C.
Standard setting is 3°C.
16
Only for devices with internal heating (LDM41P-h and LDM42P-h)
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8.18 HF – display/set Temperature for heating off
16
HF displays/sets the temperature value at which the internal heating is
switched off. The values can be varied between -40°C and 70°C. Standard
setting is 12°C.
8.19 TDx y – display/set trigger delay trigger level
17
TD is only intended for the configuration of the remote trigger input (see 8.6
DF – distance measurement with external trigger).
TD consists of two sub parameters, of the actual delay value, i.e. the delay
time, and the trigger level.
Trigger delay corresponds to the time from arrival of the trigger signal to the
starting point of a measurement. It may be set to any value between 0 and
9999 ms. With the help of the trigger level one may define if measurement is
to begin on a rising or a falling pulse slope.
Trigger delay and trigger level must be separated by space (20h) in the entry
line. Standard setting: 0 0.
x Delay time between trigger signal and start of measurement, delay
can be set from 0 to 9999 ms.
y 0 for HIGH → LOW-slope
1 for LOW → HIGH-slope
Example:
TD1000_0[Enter]
In the given example, the delay has been set to 1000 ms and the trigger slope
to "rising" (LOW-to-HIGH transition)
8.20 BR – display/set baud rate [2400..38400]
Available baud rate settings are: 2400, 4800, 9600, 19200, 38400. Faulty
entries will be rounded to the nearest baud rate. A fixed data format of eight
17
Trigger function is not available for devices with internal heating (LDM41P-h and LDM42P-h)
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data bits, with no parity and one stop bit is used. Standard setting is 9600
baud.
8.21 AS – display/set autostart command
AS (auto start) defines which function will be carried out when power
becomes available to the LDM41P and LDM42P.
Possible entries are those delivering a measured value on the output side, an
ID command or the command for turning the Laser on (LO).
For example, if ASDT has been parameterized, the LDM41P and LDM42P will
begin with distance tracking on turning on power.
8.22 OF – display/set distance offset
With the help of OF (offset) the user may define a zero-point for his/her
application. For details on the position of the module’s zero-point, refer to
section 4.
OF must be selected so it is properly matched to the currently valid scale
factor setting (SF).
OF may also take on negative values. Standard setting: 0
8.23 SO – set current distance to offset
SO performs a distance measurement and saves the measured reading as an
offset value with inverted mathematical sign (OF).
8.24 LO – Laser on
LO turns the Laser on. This function can be used for orientation or functional
testing of the LDM41P and LDM42P. After the command LO it’s necessary to
send LF! Don’t use LO because this. Please use instead of LO the command DT
to turn the Laser on.
8.25 LF – laser off
LF turns the Laser off.
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8.26 PA – display settings
PA lists all parameters in a table.
8.27 PR – reset settings
PR resets all parameters (except baud rate). After this a new configuration of
the LDM41P and LDM42P is necessary
average value[SA].................1
display format[SD]................d
measure time[ST]..................0
scale factor[SF]..................1
error mode[SE]....................1
ALARM center[AC]..................1000
ALARM hysterese[AH]...............0.1
ALARM width[AW]...................100000
distance of Iout=4mA [RB].........1000
distance of Iout=20mA [RE]........2000
remove measurement [RM]...........0 0 0
trigger delay, trigger level[TD]..0 0
trigger mode, trigger level[TM]...0 1
baud rate[BR].....................9600
autostart command[AS].............ID
distance offset[OF]...............0
Use instead of PR the "Set Standard" command from Windows
program LDMTool.
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9 Interface Connection
9.1 Profibus DP
General
The LDM41P and LDM42P is operated as a standard Profibus slave. It becomes
operational with master 13 byte entry data: 2x 8 bit error information, 16 bit
measurement value counter, 32 bit time stamp, 32 bit distance and 8 bit
internal temperature are available.
One byte of output data is used for control. It is possible to switch between
various measurement modes. In addition, the internal equipment
temperature can be measured and the laser can be turned off.
Bus rates of up to 12 Mbaud (autodetect) are supported. The slave address is
provided via the bus. The slave address will be set via Profibus (e.g. Siemens
PG other master with SET_SLAVE_ADD_REQ).
Connection takes place via circular plug-in connectors that are in compliance
with relevant standards. If only one Profibus is used, then a terminal
resistance should be attached to the other Profibus.
Configuration of measuring time, scaling, etc., takes place via the serial
interface (see Chapter 8).
Parameter Setting
The LDM41P and LDM42P is configured as a standard Profibus slave. The
standard mode transfers binary data from the Profibus. In the ASCII mode, the
ASCII values are transferred in the way they are transferred from the LDM 4x P
(only for special applications).
Note: Please ensure that the parameter setting of the LDM4xP is
correct. The parameter baud rate (BR9600) and output format (SDh)
must be set via the serial RS232 interface of the LDM4xP by using a
PC and the LDMTool programme, or alternatively a terminal program,
prior to connection to the Profibus Master!
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Table 13 : Meaning of Profibus DP modes
Modes
Profibus IN
Profibus
Configuratio
n
Profibus
Configuration Bytes
Standa
rd
8 bit Error Counter
8 bit Error Code
16 bit Counter
32 bit Time Stamp
32 bit Distance18
8 bit Temperature19
13 byte IN
1 byte OUT
156 32 0
(0x9C 0x20 0)
ASCII
16 bit Counter
32 bit Time Stamp
8 bit Number of
Character n
n byte ASCII Character
32 byte IN
0 byte OUT
223 0 0
(0xDF 0 0)
Profibus IN, Explanation of Error Codes
Table 14 : Profibus error codes
Code
Description
0 (0x00)
Received valid measurement value; Error Counter and Code
are set to zero
15 (0x0F)
Reflexes too weak, use target board20 or distance from LDM
(front edge) is out of range
16 (0x10)
Reflexes too strong, use target board
17 (0x11)
Too much constant light (e.g. sun)
23 (0x17)
Temperature below - 10 °C
24 (0x18)
Temperature above + 50 °C
61 (0x3D)
Faulty command
255
(0xFF)
Invalid string from LDM 4x P (e.g. hexadecimal output has not
been set)
Profibus IN, Explanation of Additional Binary Values
Error Counter Number of errors after last valid measurement value
Counter Increased for each new valid measurement value
18
Scaling depends on LDM 4xP parameter settings
19
Displays the internal temperature in °C, if the control byte has been set on the TP
mode, activation HI/LO slope bit 6
20
E.g. 3M, self-adhesive, white non-glossy foil
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Time Stamp Set for each new valid measurement value (ms)
Profibus OUT, Explanation of Control Byte
The control byte sets the Measuring Mode via Bit 0 to 2. For a description of
the various Modes, please see Chapter 8.
Bit 3 to 5 are reserved and can be set to 0.
If Bit 6 has been set to 1, then the actual measuring value is kept. If Bit 6 is set
from 0 to 1, the 1/0 slope is also activated. This slope will provide a new
measurement for the DM single measurement mode and TP temperature
measurement. For all other modes, Bit 6 generally remains set at 0.
To turn off the Laser and switch the LDM41P and LDM42P to standby
operation, Bit 7 should be set at 1. The remaining bits have no meaning.
If all bits are set at 0, then the LDM41P and LDM42P will operate in the DT
mode (Distance Tracking, continuous measurement).
7 6 5 4 3 2 1 0
Modes
Reserved 000 – DT (continuous)
001 – DW (continuous)
Hold 010 – DF (waiting for external trigger)
011 – DX (continuous, only LDM42 P)
Laser off 100 – TP (single21)
101 – DM (single22)
110 – DS (continuous)
9.2 Serial Interface RS232
Initially, RS232 communication interfaces purely functioned as PC
communication ports. They have become the established standard tool for
serial data transmission over short cable lengths. With greater transmission
lengths, the interface is highly susceptible to interferences, notably, in the
vicinity of strong electromagnetic noise emitters.
Therefore, it should only be used for LDM41P and LDM42P configuration.
21
New temperature measurement (second and subsequent) at Bit 6 Hold (1/0 slope)
22
New distance measurement (second and subsequent) at Bit 6 Hold (1/0 slope)
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The commands of the serial interface are described in chapter 8 starting page
21. The data output format is determined by parameter SD (display format),
see page 26.
9.3 Output Format Ethernet and RS232
The output format on the serial interface is selected by the command SD.
There are three modes available:
Parameter
Output
Format
d
decimal
xxx.xxx<CR><LF>
x=0…9
h
hexadecimal
<SPACE>xxxxxx<CR><LF>
x=0...F
s
Decimal with signal
quality
xxx.xxx<SPACE>yyyyyy<CR><LF>
x=0…9; y=0…9
SD affects all commands that output a distance value.
An output value is calculated from a given measured distance value (in mm),
multiplied by the scale factor SF.
Negative distance values are output in two’s complement notation.
The value for the signal quality varies between 0 and 1024. 0 means a bad
signal quality while 1024 indicates a very good signal quality.
Examples:
Distance = 4,996 m, SF1
dec: 004.996<CR><LF>
hex: <SPACE>001384<CR><LF>
(= 4996 mm × SF1)
dec+sig: 004.996_000005<CR><LF>
(bad signal quality)
dec+sig: 004.996_000985<CR><LF>
(good signal quality)
Distance = 4,996 m, SF10
dec: 049.960<CR><LF>
hex: _00C328<CR><LF>
(= 49960 = 4996 mm × SF10)
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dec+sig: 049.960_000005<CR><LF>
Error case
dec/hex: E15<CR><LF>
(see page 42, chapter 11, Error Codes RS232 and Profibus)
9.4 Digital Switching Output (Alarm)
With the help of a user-selectable distance threshold, the switching output
can be set to monitor objects or conditions for positive or negative overstep.
For example, using the digital switching output, an object which was selected
for measurement can be monitored for excision of a threshold value. To do
this, parameter settings for a measurement window are required. Settings for
this window can be made via the three parameters: Alarm Center (AC), Alarm
Hysteresis (AH) and Alarm Width. The range which will be subject to
monitoring begins at AC and ends at AC+AW. Switching transitions can be set
via parameter AH.
The logic state of the switching output follows from the mathematical sign of
AH.
In the case of a positive AH, the output switches
- with increasing distance:
from LOW to HIGH if the distance is greater than (AC ±AH/2)
from HIGH to LOW if the distance is greater than (AC+AW+AH/2)
- with decreasing distance:
from LOW to HIGH if the distance is smaller than (AC +AW-AH/2)
from HIGH to LOW the distance is smaller than (AC-AH/2)
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In the case of a negative AH, the output switching pattern will be inverse.
Figure 8 : Digital switching output behavior with positive and negative hysteresis
Example:
A moving object is assumed to be monitored within a window of 10 m to 11 m
with a hysteresis of 0.2 m.
AC10
AH0.2
AW1
How the switching output is to behave on occurrence of an error message
(E15, E16, E17, E18) can be defined by making suitable settings under “SE“
(see 8.13, SE – display/set error mode [0/1/2])
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9.5 Trigger Input
23
The trigger input is intended for triggering a distance measurement with an
external signal that is applied as a voltage pulse between 3 V and 24 V. This
input is used only in trigger mode DF (DF – distance measurement with
external trigger)!
It is for the user to specify a desired delay time and a pulse slope to be
selected for synchronization (see 8.19, TDx y – display/set trigger delay trigger
level). The distance measurement will always be started with a delay of 5 ms
in addition with the programmed trigger delay time.
Having done this, the LDM41P and LDM42P has to be switched to trigger
mode (see 8.6, DF – distance measurement with external trigger).
23
Trigger function is not available for devices with internal heating (LDM41P-h and LDM42P-h)
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10 List of Commands
Table 15 : LDM41P and LDM42P command list
Command
Description
DT
Starts distance tracking
DS
Starts distance tracking (< 7 m)
DW
Starts distance tracking on white target at 10 Hz
DX
Starts distance tracking on white target at 50 Hz (only
LDM42P)
DF
Starts remote-triggered single distance measurement
(single shot)
DM
Starts single distance measurement (single shot)
TP
Queries inner temperature
SA
Queries / sets floating average value (1...20)
SD
Queries / sets output format (dec/hex/sig)
ST
Queries / sets time to measure (0...25)
SF
Queries / sets scale factor
SE
Queries / sets error mode (0, 1, 2)
AC
Queries / sets alarm center
AH
Queries / sets alarm hysteresis
AW
Queries / sets alarm with
HO24
Queries / sets temperature for heating on
HF
23
Queries / sets temperature for heating off
TD
Queries / sets trigger delay and level
BR
Queries / sets baud rate
AS
Queries / sets auto start
OF
Queries / sets offset
SO
Sets current distance as offset
LO
Turns Laser on (do not use, please use DT)
LF
Turns Laser off
PA
Displays all parameter values
PR
Resets all parameters to standard values (don’t use)
24
Only for devices with internal heating (LDM41P-h and LDM42P-h)
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11 Error Codes RS232 and Profibus
Table 16 : Error codes
Code
Description
Action
E15
Reflexes are too weak, or distance
from LDM (front edge) to target is
less than 0.1 m
Use white target board25 or
increase distance to target
E16
Reflexes are too strong
Use white target board or
filter
E17
Too much steady light (e.g. sun) or
reflexes are too strong
Use aperture or filter or
white target board
E18
DX mode (only LDM42P): reflexes
too weak, or distance from LDM
(front edge) to target is less than
0.1 m
Use white target board or
increase distance to target
E19
DX mode (only LDM42P):
Motion speed > 10 m/s
Reduce motion speed
E23
Inner temperature below – 10°C
Heading necessary
E24
Inner temperature above + 60°C
Cooling necessary
E31
EEPROM checksum error
Necessary to repair
E51
Failed to set avalanche voltage
Necessary to repair
E52
Excessively high Laser current /
Laser defect
Necessary to repair
E53
Division by 0
SF must be unequal of zero
or necessary to repair
E54
Hardware error, PLL range
Necessary to repair
E55
Other hardware error
Necessary to repair
E61
Invalid command
Correct input
E62
Wrong parameter, wrong
command
Check data transmission
E63
SIO overflow
Check data transmission
E64
SIO framing error
Check data transmission
25
e.g. 3M, self adhesive foil matte white
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12 GSD Data
;==========================================================
; Profibus Device ASTECH Unigate for LDM4xA and LDM4xP
; Model : LDM 4x Series
; Description : LDM 4x Series with Profibus-DP
; Language : English
; Date : 6 September 2005
; Author : ASTECH GmbH
;==========================================================
#Profibus_DP
GSD_Revision = 1
; Device identification
Vendor_Name = "ASTECH"
Model_Name = "LDM4xP"
Revision = "V2.0"
Ident_Number = 0x2079
Protocol_Ident = 0
Station_Type = 0
FMS_supp = 0
Hardware_Release = "Revision D"
Software_Release = "V2.0"
; Supported baudrates
9.6_supp = 1
19.2_supp = 1
93.75_supp = 1
187.5_supp = 1
500_supp = 1
1.5M_supp = 1
3M_supp = 1
6M_supp = 1
12M_supp = 1
; Maximum responder time for supported baudrates
MaxTsdr_9.6 = 60
MaxTsdr_19.2 = 60
MaxTsdr_93.75 = 60
MaxTsdr_187.5 = 60
MaxTsdr_500 = 100
MaxTsdr_1.5M = 150
MaxTsdr_3M = 250
MaxTsdr_6M = 450
MaxTsdr_12M = 800
; Supported hardware features
Redundancy = 0 ; not supported
Repeater_Ctrl_Sig = 0 ; not supported
24V_Pins = 0 ; not connected
Implementation_Type = "SPC3"
Page 44
GSD Data LDM41P and LDM42P Manual LDM41P and LDM42P Manual
Page 44 ASTECH GmbH ASTECH GmbH
Bitmap_Device = "LDM4xP_"
; Supported DP features
Freeze_Mode_supp = 1
Sync_Mode_supp = 1
Auto_Baud_supp = 1
Set_Slave_Add_supp = 1
; Maximum polling frequency
Min_Slave_Intervall = 1 ; 100 us
; Maximum supported sizes
Modular_Station = 1 ; modular
Max_Module = 1
Max_Input_Len = 244
Max_Output_Len = 244
Max_Data_Len = 432
Modul_Offset = 0
Fail_Safe = 0 ; state CLEAR not accepted
Slave_Family = 9
Max_Diag_Data_Len = 8
; Definition of modules
Module = "Standard: 1/1/2/4/4/1 Byte" 0x9C,0x20
EndModule
Module = "-------------------------------" 0x00,0x00
EndModule
Module = "ASCII: 2/4/1/25 Byte" 0xDF,0x00,0x00
EndModule
;==========================================================
Bitmap LDM4xP_N.bmp
Figure 9 : GSD data and bitmap
Page 45
LDM41P and LDM42P Manual Contact Assignment for Cable Connectors
ASTECH GmbH Page 45
13 Contact Assignment for Cable Connectors
Numbers are displayed when looking at the terminal side.
RS232
5-pin male cable connector
Power supply and Trigger
5-pin female cable connector
Profibus Output
4-pin male cable connector
(B code)
Profibus Input
4-pin female cable connector
(B code)
Figure 10 : Contact assignment
1
4
3
2
5 4 1
3
5
2
1 4 3 2 4 1 2
3
Page 46
EG Declaration of Conformity LDM41P and LDM42P Manual LDM41P and LDM42P Manual
Page 46 ASTECH GmbH ASTECH GmbH
14 EG Declaration of Conformity
In accordance with the
Directive of Electromagnetic Compatibility 2004/108/EG
The company ASTECH Angewandte Sensortechnik GmbH in Schonenfahrerstr.
5, 18057 Rostock / Germany herewith declare, represented by the signatory,
that the following designated product
Laser Distance Measurement Sensor
LDM41 A / LDM42P
agrees with the following harmonized standard:
IEC 61326-1
Electromagnetic interference and electromagnetic compatibility (EMC)
*including radio interference
Rostock, 21. September 2010
ASTECH Angewandte Sensortechnik GmbH
Jens Mirow
General Manager
Page 47
LDM41P and LDM42P Manual Part Numbers
ASTECH GmbH Page 47
15 Part Numbers
Table 17 : Part numbers
Part-No.
Name
12-2002-00
LDM41P
12-2003-00
LDM42P
12-2018-00
LDM41P/h with heating
12-2019-00
LDM42P/h with heating
15-0000-00
Terminator for Profibus
15-0014-00
Male cable connector Profibus OUT, 4-pin, B-coded
15-0015-00
Female cable connector Profibus IN, 4-pin, B-coded
15-0019-00
PC-Programming cable RS232 5m
15-2002-00
Connection cable LDM41P and LDM42P, 5m
15-2002-01
Connection cable LDM41P and LDM42P, 10m
11-0001-00
USB-RS232 Interface converter, 0.2m
12-2006-00
Protection window Standard for LDM4x-Serie
12-2006-01
Protection window Quartz glass for LDM4x-Serie
12-2006-02
Protection window Sapphire glass for LDM4x-Serie
12-2030-00
Gray filter 2-fach for LDM4x-Serie
12-2030-01
Gray filter 4-fach for LDM4x-Serie
12-2010-00
Reflection foil matte/white, A4
12-2011-00
Highly reflective foil silver, A4
12-2015-00
Protection tube for pressure air for LDM4x-Serie
11-0006-00
ASTECH USB Stick (Documentation and Software)
16-2001-01
Printed Manual LDM41P and LDM42P, A5, DE
16-2001-02
Printed Manual LDM41P and LDM42P, A5, EN
17-2000-00
License number for PC-Software LDMTOOL for LDM3x und
LDM4x
Page 48
Part Numbers LDM41P and LDM42P Manual LDM41P and LDM42P Manual
Page 48 ASTECH GmbH ASTECH GmbH
Note: Several single sensors are also available as packages including sensor
and cable, manual and CD (sets). Additionally are other protection enclosures
with and without a thermostat available.
Page 49
LDM41P and LDM42P Manual Notice
ASTECH GmbH Page 49
Page 50
Notice LDM41P and LDM42P Manual
Page 50 ASTECH GmbH ASTECH GmbH
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