Erhardt+Leimer OL 80 User manual

Description B
CCD array camera OptoLine OL 80..
BEA--220265-EN-04
en
1. General
instructions 2
2. Typereferences 2
3. Function 3
4. Cameracontrols 6
5. Assembly 7
5.1 Determiningscanningdirection 7
5.2 Determiningcamerameasuringrangeanddistance
betweencameraandweb 7
5.3 DeterminingthelighttransmittersizeanddistanceM
betweenthelighttransmitterandcamera 8
5.4 Cameraassembly 9
5.5 Lighttransmitterassembly 9
5.6 Determiningthebackground 10
5.7 Mountsupportroller 10
6. Installation 11
7. Commissioning 11
7.1 Positioncamera 12
7.2 CheckwiringCheckwiring 12
7.3 Checksupplyvoltage 12
7.4 SetcameraCANaddress 12
7.5 Positionthewebedgeinthecameravisualrange 13
7.6 Setthecameraapertureandfocusing 13
7.7 Cameraconguration 16
7.8 Cameracalibration 20
7.9 Widthmeasuringfunctioncalibration 23
7.10Performapplication-dependentsettings 23
8. Operation 26
8.1Specifysetpositionvalueforguiders 26
9. Camerastart-upresponse 27
10.Paramterlist(Excerpt) 28
11.Errormessages 30
12.Maintenance 31
13.Technicaldata 31

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CCDarraycameraOptoLineOL80..
1. General
instructions
1.1 Description ThisdescriptionappliesforallCCDarraycamerasintheOL80..se-
ries.Itexplainsthestandardoperationforwidthmeasuringandweb
guidingwithoneortwocamerasonamovingweb.
Keepthedescriptioninasafeplace,accessibletopersonnelatall
times.
Thedescriptionispartofthepackagesuppliedandshouldberead
carefullypriortoassembly,operationandmaintenancework.
➜jobstobeperformed
important information and instructions
TheCCDarraycameraOptoLineOL80..shouldonlybeoperated
byqualiedpersonnelorsuitablyinstructedpersons.
CCDarraycamerasintheOL80..seriesareonlydifferentiatedby
theirvariouslenses(measuringranges).Thefunctionofthecameras
isidentical.Thersttwodigitsofthetypereferenceindicatethecam-
eraresolution(80=8192),thethirdandfourthdigits,thelensfocal
length.
Example:OL8028
 focallength28mm
1.2 Explanation of symbols
1.3 Operation
2. Type references

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CCDarraycameraOptoLineOL80..
3. Function
3.1 Purpose
3.2 Design
TheCCDarraycameraOptoLineOL80..wasdevelopedforcon-
tact-freepositionmeasuring.Itdetectsthepositionofcontrasts(edg-
es,lines,utesorgrooves)onamovingweb.Themeasuringresult
canbeusedforwidthmeasuring,webguiding,followingupactuators
ortoolssuchascuttersetc..
Inthisdescriptionthecameraandstandardoperationforwidthmea-
suringandwebguidingwithoneortwocamerasisexplained.Spe-
cialisedapplicationsdesignedbyE+Laredescribedseparatelyinthe
systemspecicationsoroperatinginstructions.
Awidth measuring systemconsistsof:
- oneorseveralcameras
- asetofcables
- oneortwolighttransmitters
- aDO002.remotedisplay
Aweb guiding systemconsistsof:
- oneorseveralcameras
- asetofcables
- oneortwolighttransmitters
- anE+Lcontrollerwithcommandstation
3.3 Operating principle
Frontlighting Backlighting
Scanningmethodes Twodifferentscanningmethodsareusedtodetectcontrasts,front-
lightingandbacklighting.Themethodapplieddependsontheindi-
vidualjob.
Withthe frontlighting methodthelighttransmitterandcameraare
onthesameside,eitheraboveorbelowtheobject.Thecamera
catchesthelightreectedbytheobjectfromthelighttransmitter.
Whenfrontlightingisused,outeredgesandlines,utesorgrooves
canallbedetected.

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CCDarraycameraOptoLineOL80..
Withthebacklighting methodthelighttransmitterispositioned
behindtheobjecttobescanned,asseenfromthescannedobject.
Inthecaseofnon-transparentmaterials,onlytheouteredgesare
detected.
Thefollowingappliesforbothmethods:
Whetheroneortwocamerasareusedtoestablishthepositionde-
pendsontheresolutionandwebwidthrequired(seeblockdiagram).
Whatisimportantisthatwhenwidthmeasuringorwebguidingwith
onecamera,bothwebedgesarealwaysinthecameravisualrange.
Whenwidthmeasuringorwebguidingwithtwocameras,oneweb
edgeeachmustbeinthecameravisualrange.
Thecenterpieceofthecameraisachargecoupleddevicewith2048
pixels.Theindividualpixelsconvertthelightshedintosignalvoltag-
es.Contrastchangesinthecamerameasuringrangesuchasaweb
orprintedlineonawebcauseachangeinthevoltage.The
cameracandetectupto30contrastchangesinitsmeasuringrange,
regardlessofwhetherthesearecausedbyoneorseveralwebs.See
g.onpage5.
Amaximumof8measuringvaluescanbeoutputonthebasisofthe
positionsrecorded.Ameasuringvalueisacontrastposition(e.g.the
webedgeposition)orthecenterbetweentwocontrasts(e.g.theweb
orlinecenterposition).
Thebuilt-inlightcontrollermakesthecamerapracticallyimpervious
tosoilingcausedbydustandenvironmentalfactorssuchassteamor
ambientlightuctuations.
Alldatatothecamera(camerasettings,measuredvalueselection)
andfromthecamera(measuredvalueposition,errormessages,
statusinformation)aretransferredviaaCANinterface.TheCAN
controllerisbuiltintothecamera.Thein-houseE+Lprotocolisused
ontheCANbus.Couplingtootherbusesorunitinterfacesises-
tablishedviaspecialinterfacemodulesthatcanbeattachedtothe
CANbus.Twokeysanda16-bitLEDdisplayareavailableforbasic
operatingfunctions,settingtheCANaddress,focusingthecamera
anddisplayingthemeasuredvalueposition.Furthersettingsareper-
formedviaanE+LcommandstationDO..orRT...
*CCD=Charge-Coupled-Device

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CCDarraycameraOptoLineOL80..
Frontlightingprinciple
Pixel1
CCD-camera
Scanonoscilloscope
Edge Printedline(dark)
Lighttransmitter
Web(light)
CCDcamera
visualrange
1Edge
2/3Line
1
Background
2 3
2048 Scanningdirection

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CCDarraycameraOptoLineOL80..
4. Camera controls LED display
Innormalmode,theLEDdisplayindicatesthepositionofthemea-
suredvalue(e.g.thewebcenter)inthecamerameasuringrange.In
theeventofmalfunctions,itindicatesvariouserrors,seeerrormes-
sagessection.
Arrow
TheLEDonthearrowindicateswhenthecameraisreadyforop-
eration.Whenconnectedtothepower,itlightsupreduntilcamera
initializationiscomplete.Whenthecameraisreadyforoperationit
lightsupgreen.
GRP key
UsetheGRPkeytosetthegroupnumberandfocusthecamera,see
the"SettingthecameraCANaddress"and"Focusingthecamera"
sections.
DEV key
UsetheDEVkeytosetthecameradevicenumber,see"Settingthe
cameraCANaddress"section.
TheDEVkeyisalsousedtosetwhichmeasuredvalueistobein-
dicatedontheLEDdisplay.PressandholddowntheDEVkey.The
addressofthemeasuredvaluecurrentlybeingdisplayedisindicated.
Theaddressesofallconguredmeasuredvaluesaredisplayedin
sequenceat5secondintervals.Releasethekeyoncetheaddressof
therequiredmeasuredvalueappears.

Other settings by the E+L Setup Editor.
The setup editor is a software tool for calibrating and con-
guring E+L CAN modules such as camera OL 80.. . In setup
mode parameters can be displayed and some changed as
well. Setup mode is accessed via a command station DO ....
or operator panel RT .... . See description "CAN-Bus, serial
bus and setup editor".
If the cameras are used only for width measuring, i.e. the
system only has a remote display DO 002. (no E+L controller
DC..), the device number of the remote display must always
be 5 (device 5). Only then can the setup editor be started.
Cameracontrols

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CCDarraycameraOptoLineOL80..
5. Assembly Please observe the locally applicable and professional safety
and accident prevention regulations.
Assembly procedure:
5.1 Determinescanningprocedure
5.2 Determinecamerameasuringrangeanddistancebetween
 cameraandweb
5.3 Determinethesizeofthelighttransmitterandthemaximum
 distancebetweenthelighttransmitterandcamera
5.4 Assemblecamera
5.5 Assemblelighttransmitter
5.6 Determinebackground,mountblackscreenasrequired
5.7 Mountsupportrollerasrequired
Selectfrontlightingtoscanlinesortransparentwebs,edgeson
opaquewebsshouldbescannedusingbacklighting.Inbordercases,
thesuitablescanningprocessshouldbeselectedbytrialanderror.
ThedistanceKbetweenthecameraandwebinuencesthecamera
measuringrange:
- theshorterthedistance,thesmallerthemeasuringrange
- thesmallerthemeasuringrange,themoreprecisethemeasure-
ment(resolution)
Thefollowingdiagramwillhelpyoudeterminethedistancebetween
thecameraandwebforassemblypurposes.
The dimensions in the diagram are approximate.
5.1 Determining scanning
direction
5.2 Determining camera mea-
suring range and distance
between camera and web
K
OL 8024
OL 8028
Measuringrange
incms
Distancebetweencamera
andwebKincms
OL 8050
Web
Distancebetweencameraandweb

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5.2.1 Systems with one camera:
5.2.2 Systems with two cameras:
The web must never lie outside the camera measuring range.

TheE+Llighttransmitterisavailablewithone uorescenttube
(FS16.1) andwithtwouorescenttubes(FS16.2).Ifsufcient
spaceisavailable,thelighttransmittershouldalwaysbeusedwith
twouorescenttubes.
Whenselectingthelighttransmitter,pleaseobservethefollowingcri-
teria:
- distanceKbetweenthecameraandweb
- distanceLbetweenthelighttransmitterandweb
- thelighttransmitteroperationalrange
measuringrange=max.webwidth+max.webmovement**+safety*
measuringrange=max.webwidth-min.webwidth+max.webmovement**+safety*
*Dependingontheapplication,asafety
clearanceof50-100mmmustbeal-
lowedforineachcase.
**Onapplicationswithanactuating
element,e.g.pivotingframe,thestroke
mustbetakenintoaccountwithregard
towebmovement.
5.3 Determining the light
transmitter size and dis-
tance M between the light
transmitter and camera
CCDcamera
...notusable
100mm...
Operationalrange
Web
Lighttransmitter
CCDcamera
visualrange
Distances:camera-Lighttransmitter-Web
DistanceKbetweenthecameraandwebisdeterminedbythemea-
suringrange.DistanceLbetweenthelighttransmitterandwebdeter-
minesthescanningprocess.
Whenusingfrontlightingthedistancebetweenthelighttransmitter
andthewebshouldbeasshortaspossibletocapturethemaximum
amountoflight.Thefollowingappliesforbacklighting;theshorter
thedistancebetweenthelighttransmitterandtheweb,thegreater
thedangerofdirtbeingsharplydepictedonthelighttransmitter,
causingincorrectmeasurements.Werecommendaminimumdis-
tanceof100mm.
The camera visual range must always be located in the light
transmitter operational range. On E+L light transmitters, the
outer 100 mm are not usable for the cameras.
Measuringrange
2

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CCDarraycameraOptoLineOL80..
Thelongerthelighttransmitter,thegreaterthegapwillbe.Themaxi-
mummountingdistancecanbecalculatedasfollows:

Ifthecameralooksdownonthewebfromabove,itshouldbemount-
edsothatthearrowonthecameraoperatingcontrolspointsinthe
directionofwebtravel.Ifthecameralooksuptothewebfrombelow,
thearrowshouldpointintheoppositedirectiontothatofwebtravel.
OncamerasystemsdesignedbyE+L,themodulereferencemust
alsobechecked(e.g.B2).Theblockdiagramspeciesexactly
whichcamerashouldbemountedonwhichsideoftheweb,seen
fromthedirectionofwebtravel.

TwodifferentE+Lsupportsareavailableformountingthecamera,
seeattacheddrawing.
We recommend you pin the supports once the camera has
been positioned (7.1 commissioning).
Howthelighttransmitterismounteddependsonthescanningpro-
cessimplemented.
M= Max.mountingdist.camera-lighttransmitterMinmms
a = Lighttransmitteroperationalrangeinmms
b = CCDelementlength=28,67mm
f = Lensfocallength(24,28or50mm)
Verticalwebtravel Horizontalwebtravel
5.4 Camera assembly
5.5 Light transmitter assembly
Lighttransmitterassemblywith
backlightingprinciple
Lighttransmitterlength Lighttransmitterh Maximummountingdistancecamera-lighttransmitterM
FS16.1FS16.2operationalrange OL8024 OL8028 OL8050
665mm 685mm 450mm 400mm 460mm 830mm
1275mm 1295mm 1050mm 900mm 1050mm 1880mm
1575mm 1595mm 1350mm 1150mm 1340mm 2400mm
M= f(a+b)
b
1. 2. 3.
Whenusing backlightingwerecommendthethreemountingvari-
antsabovetoavoidsoiling.
ThefollowingtableliststhemaximumdistanceofstandardE+L
transmitterstothecamera.

BPage10 BEA--220265-EN-04
CCDarraycameraOptoLineOL80..
Background Background
Web
Lighttransmitterassemblywith
frontlightingprinciple
Whenusingfrontlightingthefollowingshouldbeobserved:
- whenscanningtheedgesoftransparentwebs,mountthelight
transmittersothatthemirrorsurfacereectsthelightsentfrom
thetransmitterintothecamera(seeillustrationaboveleft).
- whendetectinglinesandcolourcontrastsontransparentand
opaquewebs,mountthelighttransmittersothatadiffusereec-
tionisproduced.Surfaceglareisavoidedandaclearimageis
produced(seeillustrationaboveright).
When frontlighting, please ensure that the light transmitter is
not in the camera visual range.
Auniformcontrast-freedarkbackgroundisrequiredforfrontlighting.
Youmayhavetomountamattblackpanelbehindtheweb,inthe
cameravisualrange.Thisoptimumcontrasttothewebguarantees
efcientwebedgescanning,inuencesfromexternallightsources
areavoided.
Itmustbeguaranteedthatthewebdoesnotformfoldsorcreases
andthattheedgesdonotturnupasotherwisethelightisreectedat
adifferentanglebythewebandnolongercapturedbythecamera.A
supportrollercanbemountedifnecessary.
Withfront-lightning,thesupportrollershouldbemountedoutsidethe
camerameasuringrange,eitherbeforeorafterthecamera.Seeil-
lustrationonleft.
5.7 Mount support roller
5.6 Determining the back-
ground
Background
Supportroller
Example:frontlighting
Supportrollermountedafterthecamera

BEA--220265-EN-04 BPage11
CCDarraycameraOptoLineOL80..
➜Runelectricalleadsaccordingtotheattachedwiringdiagramand
EMCinstructions.
➜ProtectandrunCANbuslinesawayfromnoisyorheavycurrent-
carryingleads.
Ensure that:
insulation is not damaged and the leads properly secured
and protected.
the total length of the CAN bus line is limited to 200 m and
may not exceed this.
a terminating resistor connector is attached to both ends of
the CAN bus line. 3-pole plugs are used as CAN bus connec-
tors.
when using your own light transmitters, that they feature an
electronic ballast (min. 5 kHz).
Procedur
7.1 Positioncamera
7.2 Checkwiring
7.3 Checksupplyvoltage
7.4 Set/checkcameraCANaddress
7.5 Positionwebedgeinthecameravisualrange
7.6 Setcameraapertureandfocusing
  A.aperture
  B.focusing
7.7 Congurecamera
7.8 Calibratecamera
7.9 Calibratewidthmeasurement
7.10 Performapplication-dependentsettings
7. Commissioning
6. Installation

BPage12 BEA--220265-EN-04
CCDarraycameraOptoLineOL80..
➜Setthecameravisualrange(CCDarray)ata90°angletothe
websurfaceandwebcenter.Ensurewhenmeasuringwithtwo
cameras,thatbotharesetatthesamedistanceAfromtheweb.
➜Forfrontlighting,alignthecameraandlighttransmitterwithone
another(seeillustrationontopofpage10).
➜Seewiringdiagram.
➜Seewiringdiagram.
ThecamerahasaCANaddressbywhichitcanbereachedviathe
bus.TheCANaddressconsistsofagroupanddevicenumber.The
(Group)numberreferstowhichcontrolloopthedevicebelongs,the
(Device)numbertothespecicdeviceinthecontrolloop.
On systems designed by E+L the CAN address is works set.
The CAN address is specied on the type plate along with the
module reference and is listed in the system block diagram.
Ifcamerasaresuppliedindividually,asacomponentofsystemsnot
designedbyE+L,youmustsettheCANaddress.Todoso,seethe
"CANbus,serialbusandsetupeditor"description.Inthiscase,cam-
erasaresuppliedwithCANaddress0.1.
The camera device numbers are xed, see table below. The
device numbers specify the mounting location (to the right or
left in the direction of web travel) and thus the camera edge
scanning direction.
7.2 Check wiring Check wiring
7.3 Check supply voltage
7.4 Set camera CAN address
7.1 Position camera
Example:Backlighting
Devicenumber Sensorindirectionofwebtravel
1 -cameraonright
-onlyonecameraoverwebcenter
2 -cameraonleft
3 -secondcameraonright(forspecialapplications)
4 -secondcameraonleft(forspecialapplications)

BEA--220265-EN-04 BPage13
CCDarraycameraOptoLineOL80..
Devicenumbe
ExampleCANaddress01:
Cameraonrightoronlyonecamera
overthewebcenter
Enter CAN address:
➜PressandholddowntheGRPandDEVkeysonthecameraop-
eratingpanelatthesametime.Afterapprox.10seconds,theset
CANaddresswillashontheLEDdisplay(seeg.opposite).
Afterafurther20secs,thecamerawillswitchtothemodeforset-
tingtheCANaddress.Theashingbecomesapermanentlight.
➜LetgotheGRPandDEVkeys.
➜SetthegroupnumberwiththeGRP(0-7)keyandthedevicenum-
berwiththeDEV(0-4)key.
Terminating address entry:
Addressenteringisterminatedafterapprox.20secsifnokeyhas
beenpressedwithinthisperiod.Aresetisautomaticallyperformed
oncethistimehaselapsedandthenewCANaddressadopted.
➜Positionthewebedgeinthecamerameasuringrange.Theweb
mustlieonthesamelevelasitwillsubsequentlyrunthroughthe
machine.Heightuctuationsdistortthemeasuringresult.
➜Screwofftheprotectivecylinderonthelens.
 TheapertureonOL 80 camerasisfocusedlikeanormalcamera
byadjustingthefrontring,theapertureontherightbehind.See
g.opposite.
If the lens is secured against twisting by an O-ring, the latter
should be moved to the side during setting procedure.
7.6.1 Setting the aperture
➜Turntheringforsettingtheaperturetotheleftstop.
➜Turntheringinapprox.5sec.intervalsslowlyfromlefttoright.
WatchtheLEDdisplayonthecameraoperatingcontrolswhiledo-
ingso.Ifthecameraisinadequatelyexposed,everysecondLED
ashes.Ifthecameraisover-exposed,everysecondLEDlights
up,seegtopleft.
 TheaperturehasbeencorrectlysetwhenthetwoouterLEDs
only(0and8)ashorthepositionofthewebedgeinthecamera
visualrangeisshownintheLEDdisplay,seeg.opposite.The
latterwillbethecaseif,byaccident,thecameraisalsocorrectly
focused.
 Ifthereareseveralaperturesettingstochoosefrom,always
selectthemiddlesetting.
➜Ifthecameracannotbefocused,youmustrepositionthecamera
andlighttransmitter,see7.1.Thecameramaybereceivingtoo
muchortoolittlelight.
Groupnumber
7.5 Position the web edge in
the camera visual range
7.6 Set the camera aperture
and focusing
Focusing
Aperture
Cameraisunder/over-exposed,
everysecondLEDgoeson
Cameraisfocusedcorrectly,
theLEDdisplayshowsthe
positionofthewebedge
inthecameravisualrange.
Example:thewebedgeisposi-
tionedinthecenterofthecamera
visualrange
Cameraisfocusedcorrectly,
LED0and8ash
O-ring
Setthecameraapertureandfocusing

BPage14 BEA--220265-EN-04
CCDarraycameraOptoLineOL80..
E+Ladapter
Oscilloscope
CANbus Video-
signal
X4
X5
X11
PC
withE+L
CANMON
E+L
serialinterface
DI3...
CANbus
The camera must be precision set for difcult (poor) con-
trasts via parameter 27. To do so, proceed as follows:
➜callupsetupeditor.
➜enterthecameradevicenumberinparameter0.
➜enterthecameragroupnumberinparameter1.
➜callupparameter26*datarate(,notevalueinparameter26.
➜callupparameter27,valueinparameterindicatessetaperture
exposuretime.
➜setcameraaperturesothattheexposuretimeisbetweenthe
minimumexposuretime(0.9msec)andthevalueofparameter26
(defaultvalue5,0msec).
➜waitapprox.1minuteaftersettinguntilsetupmodeisterminated.
7.6.2 Focusing the camera
7.6.2.1 On the camera
➜PresstheGRPkeyonthecameracontrolelduntilLED0and1
abovetheGRPkeylightupalternately(approx.10seconds).
ThesetwoLED'sindicatethatthesetfocusingmodeisactivated.
Additionally,furtherLEDsmayalsolightup.
➜TurntheringorlenstosetthefocusingdepthuntilasmanyLEDs
aspossiblelightup.TheLEDsindicatethefocusingdepthset.
➜Terminatesetfocusingmode.Todoso,holddowntheGRPkey
untilLED0and1nolongerlightupalternately(approx.10sec-
onds).
7.6.2.2 With an oscilloscope
In difcult (poor) alternations in contrast, the focusing depth
may be set with the help of an oscilloscope.
➜SwitchtheoscilloscopeviaE+LadapterEK4030(mat.no.
220651)intotheCANbuslineabovetheGRPkey.
Thewebedgemaybedetected,dependingonthescanningmethod
anddirection,asanascendingordescendingankontheoscillo-
scope,seeillustrationbelow.
7.6.2.3 With the E+L CANMON program
➜SeeCANMONdescription
Focusingthecamera

BEA--220265-EN-04 BPage15
CCDarraycameraOptoLineOL80..
Sharplydenededge
Function diagram: ascending ank Schematic sketch: descending ank
Unclearegde UnclearedgeSharplydenededge
Cameravisualrange
2.25ms
Cameravisualrange
2.25ms
Oscilloscope,focusingthecamera
7.6.2.4 Retaining settings
➜Turntheringorlensforsettingthefocusingdepthuntiltheas-
cendingordescendingankisdepictedbyasfewpixelsaspos-
sible,seeillustrationbelow.
➜RetainthesettingswithanO-ringorenclosedadhesiveplate
(mat.no.231411).
Adhesiveplate

BPage16 BEA--220265-EN-04
CCDarraycameraOptoLineOL80..
Acameramayberegardedaseightsensorsinanenclosure.
Whenconguringthecamera,aCANaddressmustbeassigned
andpropertiesdenedforeachsensorthatistooutputameasured
value.Propertiesincludethesensormeasuringrange(parameter
10/11),operatingmode(parameter6/7/8)andemergencyguiding
(parameter9).
7.7 Camera conguration
Right edge = value 1
CAN address 0.1
(Webguider,sensoronright)
Mode1inparameter6
Contrastingedge1inparameter7
Right line = value 3
CAN address 1.1
(Widthmeasuring,rightsensor)
Mode2inparameter6
Contrastingedge2inparameter7
Contrastingedge3inparameter8
Left edge = value 2
CAN address 0.2
(webguider,sensoronleft)
Mode1inparameter.6
Contrastingedge1inparameter7
Left line = value 4
CAN address 1.2
(Widthmeasuring,leftsensor)
Mode2inparameter6
Constrastingedge2inparameter7
Constrastingedge3inparameter8
CANaddress0.1
Directionofwebtravel
Example:cameraconguration Example:
A camera is used on an E+L web guider with pivoting frame. The
web is to be guided by the right web edge, left web edge and web
center. In addition, the distance between two lines printed on the web
is to be measured.
In this case, the camera must supply 4 values. The positions of the
left and right web edges on the web guider and the positions of the
two line centers on the width measuring device.
TheCANaddressgroupnumberindicatestowhichcontrolloopthe
sensorbelongs,thedevicenumberindicatestherelevantsensorin
thecontrolloop(rightorleftsensor).
TheCANaddressoftherstsensoristhecameraaddress.TheCAN
addressesofthe7othersensorsaresetinparameters47to53
1 23 1
23 Contrastingedgenumbers
physicalcamerascanningdirection
Countingdirection

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CCDarraycameraOptoLineOL80..
Themeasuringrangeofeachsensormaybesetindividually.Itmay
correspondtotheentirecamerascanningrange(2048pixels)oronly
apartofit.Themeasuringrangeissetinparameters10and11.
Thefollowingrulesshouldtherebybeobserved:
- Camerapixelsareusedastheunitofmeasurement(max.2048).
Thevaluesarealwaysinreferencetothephysicalcamerascan-
ningdirection.
- Ifthevaluesinparameters10and11exceedthephysicallength
ofthecamerascanningrange(start+length>2048),themeasur-
ingrangesettingisnoteffective,i.e.theentiremeasuringrangeis
used.
- Aseparatemeasuringrangemaybesetforeachsensor.
- Ifa0issetinbothparametersforsensors2to7,themeasuring
rangeofthesesensorswillbelimitedtothatsetforsensor1.
- Themeasuringrangesettingisalsoeffectiveduringthecalibration
process.Thecameraiscalibratedtothemeasuringrangesetin
sensor1.
- Defaultsettingforsensor1:
Parameter10=0,Parameter11=2048
Thesensoroperatingmode(parameter6)determineswhetherthe
sensorshouldoutputthepositionofacontrastingedge(operating
mode1)orthecenterbetweentwocontrastingedges(operating
mode2).Oncetheoperatingmodeisset,thecontrastingedgesin
thecamerascanningrangefromwhichthepositionistobeoutput
mustbespecied(parameter7/8).
Emergencyguiding(parameter9)isintendedforwebguidingorfol-
low-upsystems.Foreachsensorthatoutputsameasuredvalueona
webguidingorfollow-upsystem,theCANaddressofanothersensor
maybespecied(parameter9),thatwilloperateinemergenciesin
theeventofthelossoftheguidingcriterion.
Example:
Web travel should be controlled according to a printed line. If the line
is missing due to a printing error, web travel is to be controlled ac-
cording to the web edge. In this case, two sensors should be cong-
ured. Sensor 1 species the line position, sensor 2 the edge position.
In parameter 9 of sensor 1 is address of sensor 2 should be speci-
ed.
Cameras supplied separately and not as part of a system de-
signed by E+L as congured to output one measured value:
the position of the right web edge under address 0.1.
Arraycamerameasuringrange
totalmeasuringrange
02048
limitedmeasuring
range
2001848
Webplane
setmeasuringrange(mm)= Valueofparameter22xvalueofparameter11
2048

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CCDarraycameraOptoLineOL80..
Countingdirection,contrastingedges
Example:rightcameraindirectionof
webtravel
7.7.1 Conguring the rst measured value:
A CAN address should be set for each measured value to be
output. The CAN address of the rst measured value is usu-
ally the address specied on the module reference on the
camera or in the block diagram.
 Thefollowingexamplesallrefertotheillustrationonpage16.
7.7.1.1 Setting the CAN address
➜Callupthesetupeditor.
➜Enterthecameradevicenumberinparameter0.
1 for measured value 1 (right sensor)
➜Enterthecameragroupnumberinparameter1.
0 for measured value 1
7.7.1.2 Determining the operating mode
➜Setthecameraoperatingmodeinparameter6:
"1"=contrastingedge
"2"=centerbetweentwocontrastingedges.
1 for measured value 1
➜Enterthecontrastingedgenumber,thepositionofwhichistobe
output,inparameter7.Theprecedingsignindicatesthedirection
ofcounting,seeg.opposite:
 Thefollowingappliesforcamerasmountedinthedirectionof
right webtravel:
Nopre-sign=directionofcountingfromoutsidetoinside
Negativepre-sign=directionofcountingfrominsidetooutside.
 Thefollowingappliesforcamerasmountedinthedirectionofleft
webtravel:
Nopre-sign=directionofcountingfromoutsidetoinside
Negativepre-sign=directionofcountingfrominsidetooutside
1 for measured value 1
➜Enterthecontrastingedgenumberinparameter8(onlyifcamera
operatingmode2isset).
No entry for measured value 1
7.7.1.3 Emergency guiding
➜Ifnecessary,entertheaddressofthesensorthatistoperform
emergencyguidinginparameter9.
no entry for measured value 1
If the camera is only to output one measured value, it is now
ready for calibration.
-1-2-3
321
Counting
direction
contrastingedges
Counting
direction
contrastingedges

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CCDarraycameraOptoLineOL80..
7.7.2 Conguring the 2nd measured value:
7.7.2.1 Setting the CAN address
➜Callupthesetupeditor.
➜Enterthecameradevicenumberinparameter0.
1 for measured value 1 (right sensor)
➜Enterthecameragroupnumberinparameter1.
0 for measured value 1
➜Enterthedeviceandgroupnumberforthesecondmeasured
valueinparameter47(subaddress).
0.2 in parameter 47 for measured value 2 (left sensor)
➜Entera1inparameter3(reset),thenchangeparameterstoiniti-
atethereset.
7.7.2.2 Determining the operating mode
➜Enterthedevicenumberforthesecondmeasuredvalueinpa-
rameter0.
2 for measured value 2
➜Enterthegroupnumberforthesecondmeasuredvalueinparam-
eter1.
0 for measured value 2
➜Settheoperatingmodeforthesecondmeasuredvalueinparam-
eter6
"1"=contrastingedge
"2"=centerbetweentwocontrastingedges
1 for measured value 2
➜Enterthecontrastingedgenumberbywhichmeasuringorguiding
istobeperformedinparameter7.Theprecedingsignindicates
thedirectionofcounting:
 Thefollowingappliesforcamerasmountedinthedirectionof
right webtravel:
Nopre-sign-directionofcountingfromoutsidetoinside.
Negativepre-sign-directionofcountingfrominsidetooutside.
 Thefollowingappliesforcamerasmountedinthedirectionof left
webtravel:
Nopre-sign-directionofcountingfromoutsidetoinside.
Negativepre-sign-directionofcountingfrominsidetooutside.
1 for measured value 2
➜Enterthesecondcontrastingedgenumberinparameter8(onlyif
cameraoperatingmode2isset).
No entry for measured value 2
7.7.2.3 Emergency guiding
➜Ifnecessaryenterthesensoraddressthatistoperformemergen-
cyguidinginparameter9.
no entry for measured value 2
If the camera is only to output one measured value it is now
ready for operation.

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CCDarraycameraOptoLineOL80..
7.8 Camera calibration
7.7.3 Conguring the 3rd to 8th measured values:
Proceed as for conguring the 2nd measured value for all fur-
ther measured values that are to be output.
First enter the camera CAN address, then set one sub ad-
dress (parameters 48 to 53) and initiate a reset. Finally, set
the operating mode of the new measured value.
7.7.4 Deactivating the output of measured values:
➜Callupsetupeditor
➜Enterthecameradevicenumberinparameter0.
1 for the camera
➜Enterthecameragroupnumberinparameter1.
0 for the camera
➜Setthesubaddress(parameters47to53)ofthemeasuredvalue
thatistobedeactivatedto00.
0.0 in parameter 47 for the second measured value
➜Entera1(reset)inparameter3,thenchangeparameterstoiniti-
atethereset.
Toachieveauniformreferencevariableforcontrolormeasuring
systemsignals,allsensorsandactuatorsmustbecalibratedinrela-
tiontothisuniformreferencevariable.
 Therearetwodifferentcalibrationproceduresforthecamera,
standardcalibrationandtemplatecalibration.Thelatterisintend-
edforcamerasimplementedinlaminationprocesses.
7.8.1 Standard calibration
Forcameracalibrationatemplateisrequiredthatisinsertedinthe
camerameasuringrangeinsteadoftheweb.Seeillustrationoppo-
site.
The template must lie within the measuring range set in the
rst measuring value (see camera conguration). It must
be positioned on the same plane as the web will run subse-
quently. It should cover as large an area of the measuring
range as possible, approx. 2/3 of the web width.
Thecameraresolutioncanbecalculatedfromthewidthofthetem-
plateandthedistancemeasured:
Standardcalibration
2/3webwidth
Resolutionperpixel=templatewidth
coveredpixels
➜Positionthetemplateinthecameravisualrange.
➜Callupsetupeditor,seesetupeditorsection.