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LLD-RS232/RS422
Manual
Revision 003, January 2007
You are advised to carefully read this User Manual before powering on the LLD laser distance measuring
module 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: January 2007
Document number: 012840-007-98-02-0107
WayCon Positionsmesstechnik GmbH
Mehlbeerenstr. 4
82024 Taufkirchen
Germany
Fon: +49 89 67 97 13-0
Fax: +49 89 67 97 13-250
E-Mail: info@waycon.de
CE
Note:
No part of this User Manual may be reproduced in any way (by photographing, photocopying, microfilm or any
other technique) without prior written approval by WayCon Laser, Optic, System GmbH, nor may it be
processed, duplicated or disseminated with the help of electronic systems. 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.
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Summary of Contents for Waycon LLD-RS232
- Page 1 No part of this User Manual may be reproduced in any way (by photographing, photocopying, microfilm or any other technique) without prior written approval by WayCon Laser, Optic, System GmbH, nor may it be processed, duplicated or disseminated with the help of electronic systems. Proper care has been used in compiling this document.
- Page 2 Dear User For highlighting purposes, the following pictogram, signs of reference and warning symbols are used throughout this manual: Signs and Warning symbols: • Enumeration Advice/Important/Important Note → Reference (to a passage of text or a Figure) Warning symbols Warning: Indicates potential health risks that may occur if information of this type disregarded.
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Page 3: Table Of Contents
Content General Information ........................... 4 Safety Instructions ............................. 4 Basic Information ..........................4 Intended & Conforming Use ......................... 5 Nonconforming Use ..........................5 Laser Classification ..........................5 Electric Supply ............................5 Important Operating Advice ........................6 Technical Data ............................6 Scope of delivery .......................... -
Page 4: General Information
1. General Information The LLD is a laser distance sensor to measure distances from 0.1 m to maximum 150 m with pinpoint accuracy. A given target can be clearly identified with the help of a red laser sighting point. In terms of measurement range, the LLD performs depending on the reflectance, morphology and qualities of the target to be measured. -
Page 5: Intended & Conforming Use
• Safety devices must not be defeated or otherwise rendered ineffective. • Information and warning signs must not be removed. • Repair work on the LLD must not be carried out by anyone other than WAYCON personnel. • Refrain from using the LLD in an explosive environment. -
Page 6: Important Operating Advice
Interface cable 2 m KAB-LLD-2M Interface cable 5 m KAB-LLD-5M Interface cable 10 m KAB-LLD-10M Pre-configuration by WayCon for RS232, RS422 models LLD Aktivierung Option Heating for all models 3.2 Laser Laser: 650 nm laser diode; red light 650 nm, visible, laser class 2, conforming to standard... -
Page 7: Measuring Performance
3.3 Measuring Performance 0,1 ... 30 m for natural, diffusely reflecting surfaces (for DT, Measuring range DF or DM and ST =0), and up to 150 m with a target board ± 2 mm for white surfaces, (+15...+30 °C) ± 3 mm for natural surfaces, (+15...+30 °C) Measuring accuracy: ±... -
Page 8: Environment & Ambient Conditions
3.5 Environment & Ambient Conditions Operating temperature: -10...+50 °C Storage temperature: -20...+70 °C Protection type: IP65 3.6 Mechanical Mounting Conditions Extruded aluminum profile with powder-coat paint finish, Casing: front-side &rear-side cover and tube anodized Dimensions (L x W x H) 182 mm x 96 mm x 50 mm Weight: 850 g... -
Page 9: Electrical Mounting Conditions
To protect the range finder’s optical surfaces from dust, physical contact, mechanical impacts, etc., the casing has a special equalizer tube attached to it. This tube can be extended or removed as necessary to meet the customer’s operating needs. Please note that measurement cannot be guaranteed to function correctly if the equalizer tube is removed by unqualified action! consult your local distributor on this issue Figure 2: Offset against zero-edge... -
Page 10: Interface-Cable
For interface cable wire assignments, refer to Table 1 The interface cable can be provided in 2 m, 5 m and 10 m length version. Customized cable lengths are optionally available by previous agreement with WayCon Positionsmesstechnik GmbH. - Page 11 Figure 4: Interface-cable Interface cable extension is possible. One should, however, observe some important rules, depending on the particular application scenario: LLD 10 Hz: D and T D data lines should be kept as short as possible in all cases, because they tend to have an interference emitting and interference receiving effect, notably, when in open state.
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Page 12: Communications Protocol
4. Communications Protocol The easiest way to trigger and parameterize the LLD is by using a PC with RS232 communication port (see 5.1 RS232) and a terminal program (see 4.1 Example: Establishing Communication with HyperTerminal). The communications protocol is available in ASCII format. Before an operating sessions begins, desired parameter settings can be made in a smart selection procedure until the measuring module is optimally adapted to the particular measuring site conditions and the measuring job. - Page 13 Initially a dialog box appears for defining a randomly selectable name of communication session you want to begin. Figure 7: Establishing communication with the hyper terminal: name of communication session A second dialog box allows you to select the serial COM port to which the LLD is connected. Figure 8: Establishing communication with the hyper terminal: COM port selection A third dialog box is then displayed with various parameter setting options for this communication session.
- Page 14 Once the third dialog box has been confirmed, the terminal window opens. Its status bar in the lower left corner should display “Connected”. With the LLD powered and operational, commands can now be input, for example Note: A currently entered command will only be displayed if “Local echo“ is enabled. This function can be accessed via File menu ...
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Page 15: Online-Help
Finally (unless performed earlier), the current hyper terminal configuration can be saved for more convenience, i.e. you don’t have to reconfigure the interface for each new hyper terminal session. Figure 13: Establishing communication with the hyper terminal: saving a communication session 4.2 Online-Help Once communication has been established with a PC (as described above), an online help tool can be called up by triggering an ID [Enter] or id [Enter] command at the keypad. -
Page 16: Commands And Their Functions
4.3 Commands and their functions Command entries are not case-sensitive. This means that small and capital lettering can be used for commands. Any command which is to be sent to the LLD must be terminated by a hexadecimal 0Dh (carriage return) character. -
Page 17: Sa X
4.3.4 DX…Distance tracking with cooperative target (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 LLD). As a necessary precondition for measured values to be stable, a white target board must be placed at the selected object. -
Page 18: Sd D
4.3.9 SD ….display/set display format [d/h] Standard setting: d SD switches between decimal (d) and hexadecimal (h) output format of measured value data. SD affects all commands that output a distance value. A hexadecimal output value is calculated from a given measured distance value (in mm), multiplied by the scale factor SF. -
Page 19: Sex
Scale factor Resolution Output Unit of measure 1 mm 12.345 SF10 0,1 mm 123.45 SF1.0936 0,01 yard 13.500 Yard SF3.28084 0,01 feet 40.501 feet SF0.3937 1 inch 4.860 100 inch SF-1 1 mm -12.345 Table 3: Example of scale factor Note: Following a change in the scale factor, the settings for digital and/ or analog output and offset must be matched accordingly! -
Page 20: Awx.x
4.3.15 AWx.x…display/set ALARM width (length of switching output) Standard setting: 100000 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) (refer to section 5.3 Digital switching output). -
Page 21: Tdx Y
Command RM consist of 3 parameters which are separated with blank (20 h) number of preceding measured values that will be evaluated in the case of non-conforming measurement: a maximum of 10 preceding measured values can be evaluated. 2y = range of permissible values; if this range is negatively or positively exceeded, the respective measured value will be corrected accordingly number of values out of the permissible value range (out of tolerance values);... -
Page 22: Tmx Y
4.3.20 TMx y...display/set trigger mode [0/1] trigger level [0/1] Standard setting: 0 1 TM provides parameter setting options for the auto-start trigger function which allows external triggering of the auto-start command that was set via parameter AS. Triggering is accomplished via the external trigger input. All starting modes which are selectable via AS can be launched and stopped by external triggering. -
Page 23: Ofx.x
4.3.22 AS...display/set autostart command [DT/DS/DW/DX/DF/DM/TP/LO/ID] Standard setting: ID AS (autostart) defines which function will be carried out when power becomes available to the LLD. Possible entries are those delivering a measured value on the output side, an ID command or the command for turning the laser on (LO). -
Page 24: Operating Modes
Example: Parameter Description Default Wert average value display format measure time scale factor error mode ALARM center ALARM hysteresis ALARM width distance of I out = distance of I 20mA out = remove measurement 0 0 0 trigger delay, trigger level trigger mode, trigger level baud rate 9600... -
Page 25: Rs232
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. -
Page 26: Digital Switching Output
Digital Switching Output Figure 17: Wiring diagram of digital switching output 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. -
Page 27: Analog Output
Distant (m) increases 10,0 10,1 10,2 … 11,0 11,1 11,2 11,3 Distant (m) decreases 11,3 11,2 11,1 11,0 10,9 10,8 … 10,0 L= LOW, H= High How the switching output is to behave on occurrence of an error message (E15, E16, E17, and E18) can be defined by making suitable settings under “SE“... -
Page 28: Trigger Input
Figure 20: Output current diagram for RE > RB und RE < RB On occurrence of an error message (E15, E16, E17, E18), the output current can be matched to 3 mA or 21 mA with the help of parameter SE (refer to section 4.3.12). 5.5 Trigger Input Figure 21: Wiring diagram of trigger input The trigger input is intended for triggering a distance measurement with an external signal that is applied as a... -
Page 29: Error Messages
6. Error Messages Code Description Action for removal Excessively poor reflexes; Use target board, Distance LLD (Front edge) observe minimum requirement on measuring … target < 0,1 m distance (> 0.1 m) Excessively strong reflexes Use target board Reduce ambient light at target, Too much steady light (e.g. -
Page 30: Service And Maintenance
For necessary repair work, you should carefully pack the LLD and reship it to the appropriate dealer (or to us at this address) stating the conditions in which it has operated (applications, connections and environmental conditions): WayCon Positionsmesstechnik GmbH Mehlbeerenstr. 4 82024 Taufkirchen Deutschland You may also contact us via phone or by fax before dispatching the LLD.
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