Leuze electronic LES, LES 36/VC6, LES 36/VC, LES 36/PB, LES 36HI/VC6 Technical Description

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LES - Line Edge Sensor

Light Section Sensors

en 02–2013/07 50116497

We reserve the right to

make technical changes

TECHNICAL DESCRIPTION

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen / Germany Phone: +49 7021 573-0 Fax: +49 7021 573-199 http://www.leuze.com info@leuze.de

Technical description LES Leuze electronic

Table of contents

Figures and tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.2 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2 Safety notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1 General safety notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.2 Safety standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.3 Approved purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Areas of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.4 Working safely . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.1 Generation of 2D profiles. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

3.2 Limits of light section sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2.1 Occlusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.2.2 Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Possible measure against laser occlusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Possible measures against receiver occlusion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1 Overview of light section sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.1 Mechanical design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.2 General performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.1.3 Line Edge Sensor - LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Specific performance characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Typical areas of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

4.2 Operating the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.2.1 Connection to PC / process control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Measurement operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.2.2 Activation - laser on/off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

4.2.3 Triggering - Free Running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

PROFIBUS trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.2.4 Cascading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Trigger settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Cascading settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

4.3 Measurement functions: LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Functional principle of object and edge detection with the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Leuze electronic Technical description LES 1

TNT 35/7-24V

Table of contents

4.3.1 Inspection Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.3.2 Edge Analysis Window (EAW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4.3.3 Definition of EAWs and their analysis results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4.3.4 Application examples for EAWs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

4.4 Analysis Window (AW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

5 Installation and mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.1 Storage, transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

5.2 Mounting the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

5.2.1 BT 56 mounting device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

5.2.2 BT 59 mounting device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

5.3 Device arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.3.1 Selecting a mounting location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.3.2 Aligning the sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

5.4 Attach laser warning sign . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

5.5 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Characteristics of EAWs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Edge detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Relative window positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Object detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Application example: web-edge measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Application example: height and width measurement of a cubic object . . . . . . . . . . . . . . . . . . . . . . . . 33

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

6 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

6.1 Safety notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

6.2 Shielding and line lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Shielding: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

General shielding information: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Connect the ground potential to the light section sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Connecting the cable shield in the switch cabinet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Connecting the cable shield to the PLC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

6.3 Connecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.3.1 Connection X1 - logic and power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.3.2 Connection X2 - Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

6.3.3 Connection X3 - switching inputs/outputs (only LES 36/VC6 and LES 36HI/VC6) . . . . . .49

6.3.4 Connection X4 - PROFIBUS DP (only LES 36/PB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2 Technical description LES Leuze electronic

Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Activation input InAct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Trigger input InTrig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Cascading output OutCas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Output "ready" OutReady . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Ethernet cable assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Switching outputs of connection X3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Switching inputs of connection X3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table of contents

6.3.5 Connection X4 - voltage/current output (LES 36/VC, LES 36HI/VC6) . . . . . . . . . . . . . . . 51

Characteristic curve of the analog output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7 Display and control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.1 Indicator and operating elements of the. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.1.1 LED status displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.1.2 Control buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.1.3 Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Alignment aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Status display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Command mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

7.2 Menu description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

7.2.1 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

7.2.2 Operation/navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Menu navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Selecting values or selection parameters for editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Editing value parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Editing selection parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7.3 Reset to factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Interrupting a reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Executing a reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

8 Commissioning and configuration. . . . . . . . . . . . . . . . . . . . . . . . . 61

8.1 Switching on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

8.2 Establish connection to PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Setting an alternative IP address on the PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

8.3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

9 LESsoft configuration software. . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.1 System requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

9.2.1 Possible error message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

9.3 Starting LESsoft/Communication tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

PROFIBUS settings (only LES 36/PB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

9.4 Parameter settings/Parameters tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

9.4.1 Standard tab - Task Parameters panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Leuze electronic Technical description LES 3

Inspection Task Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Trigger Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Light Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Field of View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Apply Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

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Table of contents

9.4.2 Standard tab - Analysis Functions panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Edit Analysis Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Using the mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Keyboard input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Position type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Relative to Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Offset X / Offset Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Edge Detection Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Analysis Window Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Edit Logical Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Edge State (result of edge and object detection). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Object Point/EAW State (result of edge detection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Show Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

X, Width (X), Z, Height (Z) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Profibus Inputs 1 , Profibus Inputs 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Application example 1: web edge measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Application example 2: height and width monitoring of cubic objects . . . . . . . . . . . . . . . . . . . . . . . . . 85

Additional object detection with LES sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

EAW1 … EAW4, AW05 … AW08. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

AW Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Analysis Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

AW Logic Analysis Depth (result of object detection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Application example 3: width monitoring of cubic objects with object detection

(narrow objects are not to be detected) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

9.4.3 Standard tab - Single Shot Mode panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

9.4.4 Standard tab - Global Parameters panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

9.4.5 Analog Output tab - configuring the analog output (only LES 36/VC). . . . . . . . . . . . . . . . 91

Edge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

mm For Min. Val. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

mm For Max. Val. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

9.5 Menu commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

9.5.1 Saving parameter settings/File menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

9.5.2 Transmitting parameter settings/Configuration menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

9.5.3 Zoom and Pan/toolbar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94

9.6 Definition of inspection tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Typical procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

10 Integrating the LES in the process control . . . . . . . . . . . . . . . . . . 96

10.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96

10.2 Protocol structure: Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Protocol structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

10.2.1 Command number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97

10.2.2 Packet number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

10.2.3 Transaction number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

10.2.4 Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

10.2.5 Encoder High / Low . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

10.2.6 Scan number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

4 Technical description LES Leuze electronic

Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Table of contents

10.2.7 Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

10.2.8 Number of user data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

10.2.9 Evaluation telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

10.3 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

10.3.1 Elementary commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

10.3.2 Commands in command mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

10.3.3 User data in command mode (command parameters) . . . . . . . . . . . . . . . . . . . . . . . . . . 103

10.3.4 Commands in measure mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

10.4 Working with the protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

10.5 Operation with LxS_Lib.dll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

10.6 Additional support when integrating sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

11 Integration of the LES 36/PB in the PROFIBUS . . . . . . . . . . . . . . 113

11.1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

11.2 PROFIBUS address assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

11.3 General information about the GSD file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

11.4 Overview of the GSD files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

11.5 Output data description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

11.6 Input data description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

11.6.1 Module M1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Set Laser Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Set Actual Inspection Task. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Get Actual Inspection Task . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Set Scan Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Set Single Inspection Task Parameter (beginning with firmware V01.40!). . . . . . . . . . . . . . . . . . . . . . 104

Get Single Inspection Task Parameter (beginning with firmware V01.40!). . . . . . . . . . . . . . . . . . . . . . 106

Set Single User parameter (beginning with firmware V01.20!) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Set Single User Parameter (beginning with firmware V01.40!). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Get Single User parameter (beginning with firmware V01.20 !) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Command without user data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Command with user data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Characteristics of LES 36/PB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Automatic address assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Address assignment with LESsoft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Address assignment with key pad and display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Output data (from viewing position of control). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Input data (from viewing position of control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

PROFIBUS trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Activation - Sensor activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Inspection Tasks - Selection of inspection tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Scan number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Sensor info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Sensor state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Object detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Measurement value 1 in Edge Analysis Window EAW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

TNT 35/7-24V

Leuze electronic Technical description LES 5

Table of contents

11.6.2 Module M2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Measurement value 2 in Edge Analysis Window EAW1 (wEdgeAW1Data2) . . . . . . . . . . . . . . . . . . . . 121

Measurement value 1 in Edge Analysis Window EAW2 (wEdgeAW2Data1) . . . . . . . . . . . . . . . . . . . . 121

Measurement value 2 in Edge Analysis Window EAW2 (wEdgeAW2Data2) . . . . . . . . . . . . . . . . . . . . 121

Measurement value 1 in Edge Analysis Window EAW3 (wEdgeAW3Data1) . . . . . . . . . . . . . . . . . . . . 121

11.6.3 Module M3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122

Measurement value 2 in Edge Analysis Window EAW3 (wEdgeAW3Data2) . . . . . . . . . . . . . . . . . . . . 122

Measurement value 1 in Edge Analysis Window EAW4 (wEdgeAW4Data1) . . . . . . . . . . . . . . . . . . . . 122

Measurement value 2 in Edge Analysis Window EAW4 (wEdgeAW4Data2) . . . . . . . . . . . . . . . . . . . . 122

12 Diagnostics and troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . 123

12.1 General causes of errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

12.2 Interface error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

12.3 Error messages in display (starting from firmware V01.40) . . . . . . . . . . . . . . . . . . . . . 125

13 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

13.1 General maintenance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

13.2 Repairs, servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

13.3 Disassembling, packing, disposing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Repacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

14 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

14.1 General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128

14.2 Typical measurement range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

14.3 Dimensioned drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

15 Type overview and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 132

15.1 Type overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

15.1.1 LPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

15.1.2 LRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

15.1.3 LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

15.2 Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

15.2.1 Fastening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

15.2.2 Accessory ready-made cables for voltage supply X1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

15.2.3 Accessories for Ethernet interface X2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

6 Technical description LES Leuze electronic

Mounting devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Contact assignment for connection cable X1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Order codes of the cables for voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Ready-made cables with M 12 plug/open cable end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Ready-made cables with M 12 plug/RJ-45 plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Ready-made cables with M 12 plug/M 12 plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Table of contents

15.2.4 Accessory ready-made cables for X3 (only LES 36…/VC6) . . . . . . . . . . . . . . . . . . . . . . 136

Contact assignment for X3 connection cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Order code of X3 connection cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

15.2.5 Connection accessories / ready-made cables for X4 (only LES 36/PB). . . . . . . . . . . . . 137

Contact assignment for X4 connection cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Order codes for X4 connection accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Order code of PROFIBUS connection cables for X4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

15.2.6 Connection accessories / ready-made cables for X4

(LES 36/VC, LES 36/VC6, LES 36HI/VC6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Contact assignment for X4 connection cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Order code of X4 connection cables (LES 36/VC, LES 36/VC6, LES 36HI/VC6) . . . . . . . . . . . . . . . . 139

15.2.7 Configuration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

16 Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

16.1 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

16.2 Revision History / Feature list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

16.2.1 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

16.2.2 Configuration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145

Leuze electronic Technical description LES 7

TNT 35/7-24V

Figures and tables

Figure 2.1: Name plate and warning notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 3.1: Light section sensor design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 3.2: Occlusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 3.3: Typical resolution LES 36… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 3.4: Typical minimum object size LES 36HI… . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 4.1: Mechanical design of Leuze light section sensors. . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4.2: Activation input signal sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 4.3: Trigger input signal sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 4.4: Signal sequence for cascading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Figure 4.5: Cascading application example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 4.6: Edge detection with EAWs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 4.7: Meaning of Sequent Hits for edge detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 4.8: Edge detection with EAWs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 4.9: Edge detection with varying object position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 4.10: Application example: web-edge measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 4.11: Application example: height and width measurement of a cubic object . . . . . . . . 33

Figure 5.1: Device name plate LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 5.2: Fastening options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 5.3: Mounting example LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 5.4: BT 56 mounting device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 5.5: BT 59 mounting device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 5.6: Alignment to the measuring plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 6.1: Location of the electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 6.2: Connections of the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Table 6.1: Interface version of X3 and X4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Table 6.2: Line lengths and shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 6.3: Connecting the ground potential to the light section sensor . . . . . . . . . . . . . . . . . 45

Figure 6.4: Connecting the cable shield in the switch cabinet. . . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 6.5: Connecting the cable shield to the PLC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Table 6.3: Pin assignment X1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 6.6: Internal wiring at X1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Table 6.4: Pin assignment X2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 6.7: HOST / BUS IN cable assignments on RJ-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Table 6.5: Pin assignment X3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Table 6.6: Pin assignment X4 for LES 36/PB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 6.7: Pin assignment X4 for LES 36/VC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 6.8: Response of analog output LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 7.1: Indicator and operating elements of the LES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 7.1: LED function indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 7.2: Menu structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Table 8.1: Address allocation in the Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Figure 9.1: Initial screen LESsoft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

Figure 9.2: PROFIBUS settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Figure 9.3: Parameter settings LESsoft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Figure 9.4: Edit Analysis Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Figure 9.5: ’Edge Analysis Window Combination Tables’ window . . . . . . . . . . . . . . . . . . . . . 81

8 Technical description LES Leuze electronic

Figures and tables

Figure 9.6: Display of the edge positions (green and blue) in the 2D display . . . . . . . . . . . . . 82

Figure 9.7: Application example 1: web edge measurement . . . . . . . . . . . . . . . . . . . . . . . . . 84

Figure 9.8: Application example 2: height and width monitoring of cubic objects . . . . . . . . . 85

Figure 9.9: Application example 3.1: width monitoring of cubic objects with object detection . 88 Figure 9.10: Application example 3.2: width monitoring of cubic objects with object detection . 89

Figure 9.11: Parameter settings in LRSsoft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

Figure 9.12: Zoom function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Table 10.1: Connection commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 10.2: Command mode control commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Table 10.3: Sensor control commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Table 10.4: Commands in measure mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Figure 11.1: PROFIBUS address assignment with LESsoft . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Table 11.1: PROFIBUS - Overview of output data (from viewing position of control). . . . . . 116

Table 11.2: Input data byte uSensorInfo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Table 11.3: Input data byte uSensorState . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 11.4: Input data byte uResultEdge/Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 11.5: Input data byte uResultAWs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Table 11.6: Input data bytes wEdgeAW1Data1 (high and low byte) . . . . . . . . . . . . . . . . . . 121

Table 12.1: General causes of errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

Table 12.2: Interface error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

Table 12.3: Error messages in display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Figure 14.1: Typical measurement range LES 36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Figure 14.2: Typical measurement range LES 36HI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

Figure 14.3: Dimensioned drawing LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

Table 15.1: Type overview LPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 15.2: Type overview LRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 15.3: Type overview LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Table 15.4: Mounting devices for the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Table 15.5: K-D M12A-8P… cable assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133

Table 15.6: X1 cables for the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Table 15.7: Pin assignments KB ET-…-SA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Table 15.8: Ethernet connection cables featuring M12 plug/open cable end . . . . . . . . . . . . 134

Table 15.9: Pin assignments KB ET-…-SA-RJ45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Table 15.10: Ethernet connection cables M12 connector/RJ-45 . . . . . . . . . . . . . . . . . . . . . . 135

Table 15.11: Pin assignments KB ET-…-SSA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Table 15.12: Ethernet connection cables featuring M12 plug/M12 plug. . . . . . . . . . . . . . . . . 135

Table 15.13: Connectors for the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Table 15.14: Pin assignments KB M12/8-…-SA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Table 15.15: X3 cables for the LES 36…/VC6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136

Table 15.16: Pin assignment X4 (PROFIBUS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Figure 15.1: Cable structure for PROFIBUS connection cables . . . . . . . . . . . . . . . . . . . . . . . 137

Table 15.17: PROFIBUS connection accessories for the LES 36/PB . . . . . . . . . . . . . . . . . . . 137

Table 15.18: PROFIBUS cables for LES 36/PB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Table 15.19: Pin assignment X4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Table 15.20: Connection cables for LES 36/VC, LES 36/VC6, LES 36HI/VC6 . . . . . . . . . . . . 139

Table 15.21: Configuration software for the LES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Table 16.1: Revision History - Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142

Table 16.2: Revision History - Configuration software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

TNT 35/7-24V

Leuze electronic Technical description LES 9

1 General information

LISTED

1.1 Explanation of symbols

The symbols used in this technical description are explained below.

Attention!

This symbol precedes text messages which must strictly be observed. Failure to comply with this information results in injuries to personnel or damage to the equipment.

Attention Laser!

This symbol warns of possible danger caused by hazardous laser radiation. The light section sensors of the LES series use a class 2M laser: Viewing the laser output with certain optical instruments, e.g. magnifying glasses, microscopes or binoculars, may result in eye damage.

Notice!

This symbol indicates text passages containing important information.

General information

1.2 Declaration of conformity

The laser light section sensors of the 36 and 36HI series have been developed and manufactured in accordance with the applicable European standards and directives. They comply with the safety standards UL508 and CSA C22.2 No. 14 (Industrial Control Equipment).

Notice!

The CE Declaration of Conformity for these devices can be requested from the manufacturer.

The manufacturer of the product, Leuze electronic GmbH & Co. KG in D-73277 Owen, possesses a certified quality assurance system in accordance with ISO 9001.

Leuze electronic Technical description LES 11

TNT 35/7-24V

Safety notices

2 Safety notices

2.1 General safety notices

Documentation

All entries in this technical description must be heeded, in particular the present chapter "Safety notices". Keep this technical description in a safe place. It should be available at all times.

Safety regulations

Observe the locally applicable regulations and the rules of the employer's liability insurance association.

Repair

Repairs must only be carried out by the manufacturer or an authorized representative.

2.2 Safety standards

The LES series light section sensors were developed, manufactured and tested in accordance with the applicable safety standards. They correspond to the state of the art.

2.3 Approved purpose

Attention!

The protection of personnel and the device cannot be guaranteed if the device is operated in a manner not complying with its intended use.

The light section sensors of the LES series are laser distance sensors for presence detection of dimensions of objects using their edges.

In particular, unauthorized use includes:

• Rooms with explosive atmospheres

• Operation for medical purposes

Areas of application

The LES series light section sensors are especially designed for the following areas of application:

• Edge and height measurement of web material products and paper rolls

• Width and height measurement of cartons

• Edge and height measurement of stackable materials (e.g. chipboards)

• Complex object detection with window tracking

12 Technical description LES Leuze electronic

2.4 Working safely

Attention!

Access to or changes on the device, except where expressly described in this operating manual, are not authorized.

Safety regulations

Observe the locally applicable legal regulations and the rules of the employer's liability insurance association.

Qualified personnel

Mounting, commissioning and maintenance of the device must only be carried out by qualified personnel. Electrical work must be carried out by a certified electrician.

Attention, laser radiation!

If you look into the beam path over a longer time period, the retina of your eye may be damaged!

Never look directly into the beam path!

Do not point the laser beam of the light section sensors at persons!

When mounting and aligning the light section sensors, avoid reflections of the laser beam off reflective surfaces!

Safety notices

Viewing the laser output with certain optical instruments, e.g. magnifying glasses, microscopes or binoculars, may result in eye damage!

The light section sensors comply with the safety standard EN 60825-1:2007 for a Laser class 2M product, and with US Regulation 21 CFR 1040.10 with the deviations pursuant to "Laser Notice No. 50", dated 24th June 2007.

Radiant Energy: The light section sensors use a laser diode. The emitted wavelength is 658 nm. The maximum laser power, which is determined with measurement condition 3 acc. to EN 60825-1: 2007 (7mm measuring diaphragm at a distance of 100mm from the virtual source), is 8.7mW.

Adjustments: Do not attempt any adjustments to or alterations of this product. Do not open the protective housing of the light section sensor. There are no user-serviceable parts inside.

The glass optics cover is the only aperture through which laser light may be observed on this product.

Leuze electronic Technical description LES 13

TNT 35/7-24V

Safety notices

50111877

INSTRUMENTEN BETRACHTEN

Wellenlänge:

Impulsdauer:

Max. Leistung:

LASER KLASSE 2M

DIN EN60825-1:2008-05

658nm

8,7mW 3,0ms

ODER DIREKT MIT OPTISCHEN

NICHT IN DEN STRAHL BLICKEN

LASERSTRAHLUNG

INSTRUMENTEN BETRACHTEN

Wellenlänge:

Impulsdauer:

Max. Leistung:

LASER KLASSE 2M

DIN EN60825-1:2008-05

658nm

8,7mW 3,0ms

ODER DIREKT MIT OPTISCHEN

NICHT IN DEN STRAHL BLICKEN

LASERSTRAHLUNG

Maximum Output: Pulse duration:

OPTICAL INSTRUMENTS

OR VIEW DIRECTLY WITH

DO NOT STARE INTO BEAM

LASER LIGHT

Complies with 21 CFR 1040.10

IEC 60825-1:2007

CLASS 2M LASER PRODUCT

Wavelength: 658nm

8,7mW 3,0ms

Maximum Output: Pulse duration:

OPTICAL INSTRUMENTS

OR VIEW DIRECTLY WITH

DO NOT STARE INTO BEAM

LASER LIGHT

EN60825-1:2007

CLASS 2M LASER PRODUCT

Wavelength: 658nm

8,7mW 3,0ms

RAYONNEMENT

NE PAS REGARDER DANS

LE FAISCEAU NE PAS REGARDER

EN60825-1:2007

APPAREIL A LASER CLASSE 2M

AVEC DES INSTR. OPTIQUES

Longueur d'onde émis:

Puissance max: Durée d'imp

ulse: 3,0ms

658nm

8,7mW

A Aperture label B Name plate C Laser warning signs supplied

50111325

Notice: The following shows a light section sensor as an example. An overview of the available types may be found in chapter 15.1

CAUTION: Use of controls or adjustments or performance of procedures other than specified herein may result in hazardous light exposure.

The use of optical instruments or devices in combination with the light section sensor increases the danger of eye damage!

Operation notice in accordance with UL certification: CAUTION – Use of controls or adjustments or performance of procedures other than specified herein may result in hazardous light exposure.

The light section sensors are provided with warning notices on the housing and below the reading window as shown in the following figure:

Figure 2.1: Name plate and warning notices

14 Technical description LES Leuze electronic

Safety notices

Notice!

It is essential that you attach the stick-on labels (C in figure 2.1) to the device with which they are supplied! If the signs would be concealed as a result of the mounting situation of the device, attach the signs in the vicinity of the light section sensor such that reading the signs cannot lead to looking into the laser beam!

Leuze electronic Technical description LES 15

TNT 35/7-24V

Operating principle

-X

-Y

CMOS planar

detector

Receiving optics

Laser with expansion optics

The zero point of the coordinate system is the intersection of optical axis and front edge of the housing.

3 Operating principle

3.1 Generation of 2D profiles

Light section sensors work according to the triangulation principle. Using transmission optics a laser beam is expanded to a line and aimed at an object. The light remitted by the object is received by a camera, which consists of receiver optics and the CMOS area detector.

Figure 3.1: Light section sensor design

Depending on the distance of the object the laser line is projected to a different position on the CMOS planar detector as shown in figure 3.1. By means of this position the distance of the object can be calculated.

16 Technical description LES Leuze electronic

3.2 Limits of light section sensors

Laser occlusionReceiver occlusion

In the red areas the laser does not strike the object. Thus it is not possible to determine any data here.

The receiver does not "see" any object contours in the red area because they are obscured by the upper right edge of the object. When the object is shifted to the left the object contour will still be detected by the laser but the laser line does not lie within the receiver's field of view at that point, and therefore no measurement values can be detected.

3.2.1 Occlusion

The detection of high and wide objects from just one point poses the particular problem that depending on the object contour, parts of the object may be obscured by others. This effect is called occlusion.

The figure 3.2 illustrates the problem:

Operating principle

Leuze electronic Technical description LES 17

Figure 3.2: Occlusion

-Y

TNT 35/7-24V

-X

Operating principle

Possible measure against laser occlusion

• Using multiple light section sensors with rotated viewing direction. In the application example on the right you can clearly see that the fields of vision of the three sensors complement each other and merge. The first of the sensors is operated as a master, the two others are cascaded (see "Cascading" on page 24). This reliably prevents mutual interference of the sensors.

Possible measures against receiver occlusion

• Alignment of the measurement objects so that all profile data to be measured can be seen by the receiver. Or:

• Installing a second sensor featuring a viewing direction rotated by 180° about the z-axis so that the objects can be viewed from 2 sides. In the example to the right, the left sensor detects the profile data on the left side of the product, and the right sensor the profile data on the right side. In this situation the second sensor is then cascaded. See "Cascading" on page 24.

18 Technical description LES Leuze electronic

3.2.2 Resolution

0,5

1,0

1,5

2,0

2,5

3,0

3,5

200 300 400 500 600 700 800

Object distance in Z-direction in mm

Typical resolution in mm

0,1

0,2

0,3

0,4

0,5

0,8

0,9

0,6

0,7

200 300 400 500 600

Object distance in Z direction [mm]

Typical minimum

object size [mm]

In this context resolution means the smallest possible change in distance of the measurement object, which causes a unique change of the output signal. Resolution is higher in the short range than in the distant range. Small objects can be recognized better in the short range.

The length of the laser line in the X-direction is dependent on the distance Z of the measurement object from the sensor . Always the same number of measurement points is measured. From this it follows that the resolution in X-direction decreases with increasing distance in Z-direction.

The following illustration shows this relation:

Figure 3.3: Typical resolution LES 36…

The output resolution of the measurement values on the process interface is 1/10mm with Standard-Connect, 1/100mm with HI-Connect (only with LES 36HI/VC6).

Operating principle

Figure 3.4: Typical minimum object size LES 36HI…

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Device description

Laser transmitter

Receiver (CMOS camera)

Display with key pad

Electrical connection and grounding terminal

Groove for dovetail mounting and mounting points

Notice: The following shows a light section sensor as an example. An overview of the available types may be found in chapter 15.1

4 Device description

4.1 Overview of light section sensors

4.1.1 Mechanical design

Figure 4.1: Mechanical design of Leuze light section sensors

4.1.2 General performance characteristics

• Light section sensor for object measurement (width, height and position detection)

• Measurement time/response time: 10ms

• Measurement range/detection area: 200 … 800mm

• Measurement range/detection area: LES 36…: 200 to 800mm, LES 36HI…: up to 600mm

• Length of laser line: max. 600mm

• Length of the laser line: LES 36…: max. 600mm, LES 36HI…: max. 140 mm

• Configuration and transmission of process data via Fast Ethernet

• OLED display with key pad

• Measurement value display in mm on OLED display as an alignment aid

• Up to 16 inspection tasks

• Compact construction

• Robust design and easy operation

• Activation input, trigger input, cascading output

20 Technical description LES Leuze electronic

4.1.3 Line Edge Sensor - LES

Width and height measurement of cartons

Determining width and diameter of roll goods

Line edge sensors determine the positions and dimensions of objects via their edges. The sensor determines the edge positions in mm and, from those, calculates the object width and height. These data are transferred to the process control. One sensor can be used to simultaneously detect up to four value pairs of edges.

Specific performance characteristics

• Configuration software LESsoft

• Data calculation and processing directly inside the sensor

• Integrated PROFIBUS interface or analog output

• Up to four edge analysis windows with two edge-value pairs each

• Up to 8 analysis windows with logic operation option

• Detailed information on measurement function, analysis windows, detection functions and sensor state via Ethernet and PROFIBUS

Device description

Typical areas of application

• Edge and height measurement of web material products and paper rolls

• Width and height measurement of cartons

• Edge and height measurement of stackable materials (e.g. chipboards)

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Device description

Laser off

Exposing and measuring

Processing and transmitting

Laser

Activation input

Pin 2 at X1

Output

10ms between 2 consecutive laser pulses in "Free Running" mode

Axes: p = level, t = time

approx. 14ms

between laser pulse and

associated data output

4.2 Operating the sensor

4.2.1 Connection to PC / process control

Configuration

For commissioning the light section sensors are connected to a PC via the Ethernet interface (see "Connection X2 - Ethernet" on page 48) and are then set using the configuration software supplied LESsoft.

Measurement operation

In measurement operation, the LES 36/VC is connected to the process control via its analog output, the LES 36/PB is connected to the process control via PROFIBUS. Alternatively, the LES can be operated via the Ethernet interface on X2, see chapter 10 "Integrating the LES in the process control (Ethernet)". Additional sensor information is then available.

4.2.2 Activation - laser on/off

The laser and the data transmission can selectively be switched on and off via the activation input InAct (pin 2 at X1) or via the 'Ethernet Trigger' command. Thus possible glares due to laser radiation can be prevented during time periods when no measurements are performed.

Notice!

The sensor is delivered ex works with the Activation Input Disregard setting. The possible activation sources (activation input and Ethernet activation) are ignored - the measurement function of the sensor is enabled.

The activation function can be switched on via the configuration software. To do this, the Activation Input parameter must be set to Regard. The sensor then only measures if one of the activation sources is activated. If the sensor is waiting for activation, it displays !Act in the display.

Figure 4.2: Activation input signal sequence

22 Technical description LES Leuze electronic

The figure 4.2 shows the effect of the activation on laser and measurement value output in

A second trigger pulse before 10ms have elapsed has no effect

Trigger time (rising edge)

Laser

Activation input

Pin 2 at X1

Output

(Ethernet)

Data packets, approx. 1ms

fix

approx. 14ms

Trigger input

Pin 5 at X1

Axes: p = level, t = time

"Free Running" mode.

4.2.3 Triggering - Free Running

The light section sensors can measure in two modes:

• In "Free Running" operation the light section sensor determines measurement results with a frequency of 100Hz and outputs these continuously via the interface X2.

• Alternatively, single measurements can also be carried out. For this purpose, the light section sensor requires a trigger signal at the trigger input (pin 5 on X1), a PROFIBUS trigger or the Ethernet Trigger command in measure mode (see chapter

10.3.4"Commands in measure mode" on page 110).

When triggering via pin 5 at X1, note:

- Triggering occurs on the rising edge.

-The trigger pulse must be at least 100μs long.

- Before the next trigger, the trigger cable must be on low-level for at least 1 ms.

- Activation must occur at least 100μs before the trigger edge.

- The shortest possible time interval between two successive trigger edges is 10ms.

Notice!

Ex works, the LES is set to Free Running (shown on display: fRun). In order for it to respond to signals on the trigger input, the operating mode must be set via the LESsoft configuration software to Input Triggered (shown on display: Trig).

Device description

Leuze electronic Technical description LES 23

Figure 4.3: Trigger input signal sequence

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Device description

Laser

Measurement value output

Trigger input, pin 5 at X1 /

not required

Cascading output,

pin 6 at X1

Sensor 1 / Master

Laser

Measurement value output

Trigger input, pin 5 at X1

Cascading output,

pin 6 at X1

Sensor 2 / 1. slave

Laser

Measurement value output

Trigger input, pin 5 at X1

Cascading output,

pin 6 at X1

Sensor 3 / 2. slave

Figure 4.4: Signal sequence for cascading

PROFIBUS trigger

So that a measurement can be triggered on each PROFIBUS cycle, the PROFIBUS trigger of the LES responds to a change of master output byte uTrigger. The control only needs to increment the trigger value in order to initiate a new measurement.

The maximum trigger frequency is 100Hz. If triggering occurs during a measurement, the trigger signal is ignored, as is the case in the Free Running operating mode.

4.2.4 Cascading

Figure 4.5: Cascading application example

If several light section sensors are operated, there is the risk of mutual interference if the reflected laser beam of one sensor can be received by the receiver of another sensor at

24 Technical description LES Leuze electronic

the time of reading.

This can easily be seen in figure 4.5. Here three light section sensors are used to determine the log thickness reliably from all sides.

To prevent mutual interference the light section sensors can be operated cascaded: the exposure by the second sensor will be initiated following completion of the exposure by the first sensor. To achieve this, the cascading output of the first sensor must be connected to the trigger input of the second sensor. Up to 6 sensors can thus be operated cascaded.

Trigger settings

Sensor 1, or the master, can be operated in this c ase bot h tr igg ere d as wel l as con tin uou sly . All other sensors must be operated triggered.

Cascading settings

For all sensors except the last slave, the cascading output must be enabled via configuration software: Cascading Output: Enable.

Notice!

In PROFIBUS operation, cascading only functions as described above via the InTrig and OutCas inputs/outputs at X1. In this case, the maximum detection rate of 100 Hz is achieved. Make certain, however, that the input data of the PROFIBUS light section sensors are still transmitted in the same bus cycle; monitor the scan numbers if necessary.

Alternatively, light section sensors with PROFIBUS can be selectively triggered in sequence. Master output 'uTrigger' of the sensor to be triggered is incremented on each PLC cycle; the master outputs of the other sensors do not change. The maximum detection rate of 100Hz is not achieved with this process.

If multiple sensors are triggered in a PROFIBUS cycle, mutual interference may occur between the sensors if they are in the same visual field and the time between updating byte 'uTrigger' is shorter than the maximum exposure time (Exposure Time) of 1.3 ms.

4.3 Measurement functions: LES

With the LES, you can reliably detect objects and measure their edge position, height and width. Adaptation of the LES to an application is performed using the LESsoft configuration software. All settings for the application are made there and stored in up to 16 inspection tasks.

Functional principle of object and edge detection with the LES

The distance profile of the application is determined along the laser line in 376 measurement points. Rectangular analysis windows, used for object and edge detection, can be defined in the measurement range.

Object detection

The number of measurement points is counted in the analysis window (Analysis Window = AW or Edge Analysis Window = EAW) and compared with two adjustable limits. From this, the logical state ok or not ok of the analysis window is determined. For unique object detection, it may be necessary to combine multiple analysis windows. For this purpose, the LES offers the AND combination and inversion of multiple analysis windows. The logic combinations ensure the detection of problematic objects.

Edge detection:

Windows for edge detection are called Edge Analysis Windows (EAW). In an EAW, object detection can be performed as described above. Also determined in an EAW are the X and Z coordinates of the first ("left-most") and the last ("right-most") measurement point. By appropriately selecting the size and position of the EAWs, it is possible to determine coordinates of edge positions. From these, the width and height of an object are calculated. For robust edge detection, the "Sequent Hits" parameter was introduced. The minimum number of measurement points set there must occur in succession in the EAW to detect a valid edge. Outliers or missing measurement points reset the counter.

Device description

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Device description

4.3.1 Inspection Task

The LES supports up to 16 individual inspection tasks. Grouped together in an inspection task are all parameter settings relevant for an application:

• Operation Mode (Free Running, Input Triggered)

• Activation Input (switch laser on and off)

• Cascading Output

• Light Exposure (exposure duration of the laser)

• Field of View (sensor detection range)

• Edit Analysis Windows (size and position of four AWs and four EAWs, object detection and edge detection parameters)

• Edit Logical Combinations (logic combination of AWs and EAWs, definition of the values that are available via the Profibus)

• Analog Output (analog output definitions)

The selection of the inspection tasks is carried out:

• via the switching inputs of connection X3 (inspection tasks 0-7 only)

•via PROFIBUS

• via LESsoft (on a PC connected via X2)

• via Ethernet (on a process control connected via X2)

• via the control panel of the sensor beginning with firmware V01.40

4.3.2 Edge Analysis Window (EAW)

EAWs are used for edge detection; they can also be used for object detection. EAWs are configured in the LESsoft configuration software (see chapter 9.4 "Parameter settings/ Parameters tab", figure 9.3). Here, position and size of each EAW are defined. To ensure stable measurement of edge positions, it is also possible to

• check the edge quality (Sequent Hits, see below),

• count the number of measurement points to be detected in the EAW (a quasi minimum object size).

An evaluation is carried out only within the active EAWs. Areas outside of the measurement range and field of view are ignored.

Characteristics of EAWs

• EAWs are rectangular and may overlap freely.

• The coordinates of the left-most measurement point ("leftmost" LX, LZ) and right-most measurement point ("rightmost" RX, RZ) are determined in each EAW.

• EAWs usually have an absolute position. If the object position varies, an EAW can also be positioned relative to a found edge position in the previous EAW and thus tracked.

26 Technical description LES Leuze electronic

Device description

LES

Measurement range

Object

Measurement points

H = height difference of two edges W = object width

Edge Analysis Window EAW

x axis

z axis

No object detection due to

shadowing in the

measurement range

Right edge (coordinates RX, RZ)

Left edge

(coordinates LX, LZ)

Conveyor path

Figure 4.6: Edge detection with EAWs

4.3.3 Definition of EAWs and their analysis results

Edge detection

Edge detection with the LES is possible if the following prerequisites are met:

There are enough successive measurement points in the EAW at both the right and the left edge. This serves the plausibility of the edge detection.

Edges are only detected if the number of successive measurement points is greater than or equal to the defined minimum number of measurement points (Sequent Hits). If there are not enough successive measureme nt poi nts in an EAW , no edg e de tecti on and no object measurement is possible within this EAW.

Configuration of the edge detection in EAWs is performed with LESsoft (Edit Analysis Windows -> Edge Detection Definitions).

EAW01

+X -X

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Leuze electronic Technical description LES 27

Device description

+X -X

EAW02

EAW01

LES

Measurement range

x axis

z axis

Right edge in EAW02 (for Sequent Hits = 1)

Left edge in EAW01

(for Sequent Hits 

6)

Conveyor path

Right edge in EAW01 (for Sequent Hits =

 3)

Left edge in EAW02

(for Sequent Hits 

5)

Right edge in EAW02 (for 2  Sequent Hits 

5)

Notice!

If there are not enough successive measurement points on the edges of an EAW, the found edge positions are shifted away from the edges of the EAW (see figure 4.7, different right edge position with different parameters for Sequent Hits).

Figure 4.7: Meaning of Sequent Hits for edge detection

For each EAW, up to two measurement values can be output (configuration with LESsoft: Edit Logical Combinations):

• Edge positions: LX, LZ, RX, RZ (LX = left edge, X-coordinate, LZ = left edge, Z-coordinate, RX = right edge, X-coordinate, RZ = right edge, Z-coordinate).

• Width of objects: W (calculated from the distance of RX and LX in the X direction).

28 Technical description LES Leuze electronic

LZ in the Z-direction).

• Height difference of left and right edge: H (calculated from the distance of RZ and

Device description

LES

Measurement range

Object

Measurement points

H = height difference of two edges W = object width

Edge Analysis Window EAW

x axis

z axis

No object detection due to

shadowing in the measure-

ment range

Right edge (coordinates RX, RZ)

Left edge

(coordinates LX, LZ)

Conveyor path

Figure 4.8: Edge detection with EAWs

EAW01

+X -X

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Device description

+X -X

EAW01

EAW02

LES

Measurement range

Object

Measurement points

H = height difference of two edges W = object width

Edge Analysis Window EAW

x axis

z axis

No object detection due to

shadowing in the

measurement range

Right edge (coordinates RX, RZ)

Left edge

(coordinates LX, LZ)

Conveyor path

Relative window positioning

If the position tolerance of the measurement object exceeds the possible size of the analysis window, it is possible to move the EAW relative to the position of the measurement object.

Figure 4.9: Edge detection with varying object position

For precise definition of the reference edg e, the measurement object is placed within EAW01 and acquisition of measurement data is stopped (pause button) as soon as the desired reference edge has been found.

In the now static measurement profile, a further analysis window (e.g. EAW02) can be positioned relative to the right or left object edge found in EAW01. This window now tracks all position changes of the object edge to be measured, both in the X-direction and Z-direction.

Notice!

The evaluation functions are defined using LESsoft (see chapter 9.4).

30 Technical description LES Leuze electronic

Device description

Object detection

In addition to edge detection, functions for object detection are also available in the LES. By way of the optional configuration of the detection functions, even problematic objects can be reliably measured.

• During object detection, the number of measurement points in an EAW/AW are ascertained and compared with two adjustable limits. From this, the logical object detection state ok or not ok of the EAW is determined. Configuration of the object detection in EAWs/AWs is performed with LESsoft (Edit Analysis Windows -> Analysis Window Definitions).

For unique object detection, it may be necessary to combine EAWs or AWs. For this purpose, the LES offers the AND combination and inversion of multiple analysis windows. The configuration of applications with additional object detection with logic combinations is performed with LESsoft (Edit Logical Combinations -> AW Logic panel).

The result of combinations can be output via PROFIBUS or Ethernet. Detailed evaluation results such as, e.g., the status of all EAWs/AWs, the number of measurement points within the EAW/AW and the state of the complete object detection are transmitted via Ethernet. For more information please refer to chapter 10 and chapter 11.

Notice!

An object detection is carried out only within the active EAWs. Areas outside of the measurement range and field of view are likewise not evaluated. An object is detected if the number of measurement values in the EAW reaches or exceeds an arbitrarily defined minimum value.

Notice!

The number of hit points does not necessarily correspond with the object size, since the number of hit points is dependent on distance z. At near distance to the sensor (e.g., 300 mm), an object expanded in the X direction has nearly twice as many hit points as it does at a far distance (e.g, 600mm). If the object distance is the same, the number of hit points remains nearly constant.

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Device description

LES

Measurement range

Edge Analysis Window EAW

x axis

z axis

Right edge (of no meaning for this application)

Left edge

(coordinates LX, LZ)

Web

4.3.4 Application examples for EAWs

Application example: web-edge measurement

EAW01

+X -X

Figure 4.10: Application example: web-edge measurement

In the example shown above, the edge position of web material is to be determined. Analysis is performed in Edge Analysis Window EAW01. The edge coordinates for edge LX, LZ are determined in EAW01.

32 Technical description LES Leuze electronic

Device description

+X -X

EAW01

EAW03

LES

Measurement range

H = height difference of two edges

x axis

z axis

Conveyor path

Left edge EAW03

(coordinates LX3, LZ3)

Left edge EAW01

(coordinates LX1, LZ1)

Right edge EAW01 (coordinates RX1, RZ1)

Right edge EAW03 (coordinates RX3, RZ3)

Application example: height and width measurement of a cubic object

Figure 4.11: Application example: height and width measurement of a cubic object

In the application example shown above, the height and width of a cubic object O1 is to be determined. The object is on a transport system. The width is measured in edge analysis window EAW0; the height is measured in EAW03. The following measurement values are obtained:

• in EAW01: Object Width W = LX1 - RX1

• in EAW03: Object Height H = RZ3 - LZ3

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Device description

4.4 Analysis Window (AW)

In addition to the EAWs, four AWs can be configured with the LES. In AWs, only object detection is possible.

During object detection, the number of measurement points in an AW is determined and compared with two adjustable limits. From this, the logical object detection state ok or not ok of the AW is determined. If there are not enough measurement points in the AW, the object detection state is not ok. Configuration of the object detection in EAWs/AWs is performed with LESsoft (Edit Analysis Windows -> Analysis Window Definitions). The position and size of the AW are configured here for each AW.

For unique object detection, it may be necessary to combine AWs or EAWs. For this purpose, the LES offers the AND combination and inversion of multiple analysis windows. The configuration of applications with additional object detection with logic combinations is performed with LESsoft (Edit Logical Combinations -> AW Logic panel).

Notice!

34 Technical description LES Leuze electronic

5 Installation and mounting

Notice:

The following shows a light section sensor as an example. An overview of the available types may be found in chapter 15.1

5.1 Storage, transportation

Attention!

When transporting or storing, package the light section sensor so that it is protected against collision and humidity. Optimum protection is achieved when using the original packaging. Heed the required environmental conditions specified in the technical data.

Unpacking



Check the packaging for any damage. If damage is found, notify the post office or shipping agent as well as the supplier.



Check the delivery contents using your order and the delivery papers:

• Delivered quantity

• Device variant and model as indicated on the nameplate

• Laser warning signs

• Brief manual

The name plate provides information as to what light section sensor type your device is. For specific information, please refer to chapter 15.

Installation and mounting

Figure 5.1: Device name plate LES



Save the original packaging for later storage or shipping.

If you have any questions concerning your shipment, please contact your supplier or your local Leuze electronic sales office.



Observe the local regulations regarding disposal of packaging material.

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Installation and mounting

Dovetail fastening grooves

M4 Tapped holes

5.2 Mounting the LES

The light section sensors can be mounted in different ways:

• By means of two M4x6 screws on the back of the device.

• Using a BT 56 mounting device on the two fastening grooves.

• Using a BT 59 mounting device on the two fastening grooves.

Figure 5.2: Fastening options

Figure 5.3: Mounting example LES

36 Technical description LES Leuze electronic

5.2.1 BT 56 mounting device

Clamping jaws for mounting on the LES

Clamp profile for mounting to round or oval pipes Ø16…20mm

A Rod holder, turnable by 360° B Rods Ø 16 … 20mm

All dimensions in mm

The BT 56 mounting device is available for mounting the LES using the fastening grooves. It is designed for rod installation (Ø 16mm to 20mm). For ordering instructions, please refer to chapter "Type overview and accessories" on page 132.

Installation and mounting

Figure 5.4: BT 56 mounting device

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Installation and mounting

Clamping jaws for mounting on the LES

A Holder, turnable 360° B ITEM joint, angle adjustable ±90° C M8x16 screwable cylinder, M8 serrated

washer, M8 sliding block, connector for ITEM profile (2x)

All dimensions in mm

5.2.2 BT 59 mounting device

The BT 59 mounting device is available for mounting the LES on ITEM profiles using the fastening grooves. For ordering instructions, please refer to chapter "Type overview and accessories" on page 132.

Figure 5.5: BT 59 mounting device

38 Technical description LES Leuze electronic

5.3 Device arrangement

5.3.1 Selecting a mounting location

In order to select the right mounting location, several factors must be considered:

• The required resolution. This is a result of the distance and the resulting line length.

• The permissible cable lengths between the LES and the host system depending on which interface is used.

• The display and control panel should be very visible and accessible.



When selecting a mounting location, pay further attention to:

• Maintaining the required environmental conditions (temperature, humidity).

• Possible soiling of the optics covers on transmitter and receiver by discharged liquids, abrasion from cartons or packaging residues.

• Lowest possible chance of damage to the LES by mechanical collision or jammed parts.

• Possible extraneous light (no direct sunlight or sunlight reflected by the measurement object).

• The optimal perspective for detecting the relevant contours of objects, see chapter

3.2.1 "Occlusion".

Attention, laser radiation!

When mounting and aligning the LES, avoid reflections of the laser beam off reflective surfaces!

Notice!

The prevention of ambient light due to shielding of the sensor for example, ensures stable and precise measurement values. Secondary reflections of the laser line on reflective objects must be avoided as these can result in faulty measurements. The best measurement results are obtained when:

Installation and mounting

- You adapt the operating mode (light/dark) to the application.

- You do not measure high-gloss objects.

- There is no direct sunlight.

5.3.2 Aligning the sensor

The zero point of the sensor coordinate system is the intersection of optical axis and front edge of the housing. The general principle is that the light section sensor should be aligned so that the back of the sensor is aligned parallel to the conveying belt or measuring plane. Rotation along the Y-axis is not desirable.

The figure 5.6 illustrates the problem:

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Installation and mounting

Figure 5.6: Alignment to the measuring plane

A rotation of the sensor about the y-axis distorts the entire coordinate system, which the measurement values relate to. The sensor measures along the solid line in the right picture, however the measuring plane is located on the dotted line, and a measurement towards the conveying belt shown in gray would result in a tilted plane.

When setting up an application it is therefore very important to ensure correct alignment and that the integrated alignment aid on the display is used.

5.4 Attach laser warning sign

Attention Laser!

Observe the safety notices in chapter 2.

-X

-Y



It is essential that you attach the stick-on label (laser warning signs and laser beam exit symbol) supplied with the light section sensor to the light section sensor! If the signs would be concealed as a result of the mounting situation of the LES, attach the signs in the vicinity of the LES such that reading the signs cannot lead to looking into the laser beam! When installing the LES in North America, also attach the stick-on label saying "Complies with 21 CFR 1040.10"

5.5 Cleaning



Clean the optics cover of the LES with a soft cloth after mounting. Remove all packaging remains, e.g. carton fibers or styrofoam balls. In doing so, avoid leaving fingerprints on the optics cover of the LES.

Attention!

Do not use aggressive cleaning agents such as thinner or acetone for cleaning the device.

40 Technical description LES Leuze electronic

6 Electrical connection

Notice:

The following shows a light section sensor as an example. An overview of the available types may be found in chapter 15.1

Tx+

Rx+

Rx-

Tx-

VIN

Act

Trig

Ready

OutCas

GND

Notice: The following shows a light section sensor as an example. An overview of the available types may be found in chapter 15.1

The light section sensors are connected using variously coded M12 connectors. This ensures unique connection assignments.

For the locations of the individual device connections, please refer to the device detail shown below.

Notice!

The corresponding mating connectors and ready-made cables are available as accessories for all connections. For additional information, refer to chapter 15.1.

Figure 6.1: Location of the electrical connections

All the light section sensors are equipped with three M12 plugs / sockets which are A- and D-coded.

Electrical connection

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Leuze electronic Technical description LES 41

Figure 6.2: Connections of the LES

The pin assignment of X1 and X2 is identical for all light section sensors; X3 and X4 differ depending on device type.

Electrical connection



Using the name plate check the exact type designation. The version of X3/X4 is contained in the following table:

Type designation X3 X4 Relevant chapter

LES 36/VC Not used Analog output voltage/current LES 36/VC6 Switching inputs / outputs Analog output voltage/current chapter 6.3.3 LES 36/PB Not used PROFIBUS chapter 6.3.4 LES 36HI/VC6 Switching inputs / outputs Analog output voltage/current chapter 6.3.3

Table 6.1: Interface version of X3 and X4

6.1 Safety notices

Attention!

Do not open the light section sensor yourself under any circumstances! There is otherwise a risk of uncontrolled emission of laser radiation from the light section sensor. The housing of the LES contains no parts that need to be adjusted or maintained by the user.

Before connecting the device please ensure that the supply voltage matches the value printed on the nameplate.

Connection of the device and cleaning must only be carried out by a qualified electrician.

If faults cannot be cleared, the LES should be switched off from operation and protected against accidental use.

The LES light section sensors are designed in accordance with safety class III for supply by PELV (protective extra-low voltage with reliable disconnection).

Notice!

Protection class IP 67 is achieved only if the connectors and caps are screwed into place! The connectors used must be equipped with O-ring seals. Therefore, preferably, please use the ready-made cables by Leuze electronic.

42 Technical description LES Leuze electronic

6.2 Shielding and line lengths

The light section sensors of the 36/36HI series are equipped with modern electronics developed for industrial applications. In industrial environments, a number of sources of interference may affect the sensors. In the following, information is provided on EMC-compliant wiring of the sensors and of the other components in the switch cabinet and on the machine.



Observe the following maximum line lengths:

Connection to the sensor Interface Max. line length Shielding

Power supply unit X1 50 m required Activation / cascading / trigger X1 50m required PC/Host X2 50 m required Encoder X3 50m required Switching inputs / outputs X3 10m required Analog output voltage/current X4 10 m required PROFIBUS DP X4 10 m required

Table 6.2: Line lengths and shielding

Shielding:

1. Ground the LES housing: Connect the housing of the LES via the functional earth (FE) screw provided for this purpose (see figure 6.3, devices produced after April 2011) with the protective conductor on the machine star point. The cable should have an impedance as low as possible for high-frequency signals, i.e., be as short as possible and have a large cross-sectional area (grounding strip, …). If the LES does not yet have an FE screw of its own, please use one of the M4 holes on the dovetail. Important: Place a lock washer underneath and check the penetration of the anodized coating of the LES housing by measuring the electrical connection from FE star point to the connector sleeves without connected sensor cables so that other FE interruptions can be detected on the machine base and profile rails as well.

2. Shield all connection cables to the LES: Ap pl y t he sh ie ld to FE on bo t h s id es . O n t he LE S e nd , t hi s i s e ns ur ed if t he LE S h ou si n g is connected to FE (PE) as described under 1. (shield fitted over the connector sleeves to the housing). In the switch cabinet, clamp the shield flat to FE. To do this, use special shielding clamps (e.g., Wago, Weidmüller, …). Keep the length of the shieldless end of the cable as short as possible. The shield should not be connected at a terminal in a twisted fashion (no "RF braid").

3. Disconnect power and control cables: Lay the cables for the power components (motor cables, lifting magnets, frequency inverters, …) as far from the sensor cables as possible (distance > 30 cm). Avoid laying power and sensor cables parallel to one another. Cable crossings should be laid as perpendicular as possible.

Electrical connection

TNT 35/7-24V

Leuze electronic Technical description LES 43

Electrical connection

4. Lay cables close to grounded metal surfaces: This measure reduces interference coupling in the cables.

5. Avoid leakage currents in the cable shield: Leakage currents arise from incorrectly implemented equipotential bonding. Therefore, carefully ground all parts of the machine. Notice: You can measure leakage currents with a clip-on ammeter.

6. Star-shaped cable connections: To avoid interference between various consumers, ensure that the devices are connected in a star shape. This will prevent cable loops.

General shielding information:

Avoid spurious emissions when using power components (frequency inverters, …). The technical descriptions of the power components provide the necessary specifications according to which the respective power component satisfies its CE conformity.

In practical work, the following measures have proven effective:

• Screw the mains filter, frequency inverter flat on the galvanized mounting plate.

• Mounting plate in the switch cabinet made of galvanized sheet steel, thickness  3mm

• Keep cable between mains filter and inverter as short as possible and twist cables.

• Shield both ends of the motor cable.

• Ground the entire system well.

Carefully ground all parts of the machine and of the switch cabinet using copper strips, ground rails or grounding cables with large cross section.

Below, the EMC-compliant connection of the light section sensors LES is described in practical use with images.

44 Technical description LES Leuze electronic

Electrical connection

Devices produced after April 2011 are equipped with an additional grounding terminal.

All devices can also be connected to ground potential at the M4 threaded hole on the dovetail.

Attention!

Place lock washer underneath and check the penetration of the anodized coating!

• Shield connected flat to PE

• Connect PE star point with short cables

• Galvanized mounting sheet steel

Comment: Depicted shield components from Wago, series 790 ...:

- 790-108 Shield clamping bracket 11 mm

- 790-300 Busbar holder for TS35

Connect the ground potential to the light section sensors

Figure 6.3: Connecting the ground potential to the light section sensor

Connecting the cable shield in the switch cabinet

Figure 6.4: Connecting the cable shield in the switch cabinet

Leuze electronic Technical description LES 45

TNT 35/7-24V

Electrical connection

• Where possible, use shielded sensor cables

• Connect shield flat to PE using shield clamping system

• Mounting rails must be well grounded

Comment: Depicted shield components from Wago, series 790 ...:

- 790-108 Shield clamping bracket 11 mm

- 790-112 Carrier with grounding foot for TS35

Connecting the cable shield to the PLC

Figure 6.5: Connecting the cable shield to the PLC

46 Technical description LES Leuze electronic

6.3 Connecting

VIN

InAct

InTrig

OutReady

OutCas

GND

M12 plug

(A-coded)

X1-2/5

10k

X1-3

Inputs Outputs

6.3.1 Connection X1 - logic and power

Attention!

All cables must be shielded!

X1 (8-pin plug, A-coded)

Pin Name Core color Remark

1 VIN WH +24 V DC supply voltage 2 InAct BN Activation input 3GND GN Ground 4 OutReady YE "Ready" output 5 InTrig GY Trigger input 6 OutCas PK Cascading output 7 BU Do not connect

Table 6.3: Pin assignment X1



Preferably, please use the ready-made cables "K-D M12A-8P…", see chapter 15.2.2.

Electrical connection

Do not connect

18 - 30 VDC

100 mA (max. 250 mA)

GND

X1-1

X1-4/6

X1-3

Figure 6.6: Internal wiring at X1

Power supply

For power supply specifications please refer to chapter 14.

Activation input InAct

The activation input is used to switch the laser on and off via the process control. The sensor stops outputting data and does not respond to trigger commands or the trigger input. The equivalent circuit of the inputs at X1 is shown in figure 6.6.

Trigger input InTrig

The trigger input is used for synchronizing the measurement with the process and for synchronizing cascaded sensors. Detailed information on this topic can be found in chapter

4.2.3 and chapter 4.2.4. The internal equivalent circuit is shown in figure 6.6.

Leuze electronic Technical description LES 47

TNT 35/7-24V

Electrical connection

M12 socket

(D-coded)

Twisted pair

Cascading output OutCas

In order to operate several light section sensors cascaded this output must be connected directly to the trigger input of the following sensor. Detailed information on this topic can be found in chapter 4.2.4. The internal equivalent circuit is shown in figure 6.6.

Output "ready" OutReady

This output indicates operational readiness of the sensor. The state of the output corresponds to the state of the green LED (see "LED status displays" on page 53).

6.3.2 Connection X2 - Ethernet

Attention!

All cables must be shielded!

The LES makes either the Ethernet interface available as host interface.

Tx+

Tx-

Rx+

Rx-

X2 (4-pin socket, D-coded)

Pin Name Core color Remark

1 Tx+ YE Transmit Data + 2 Rx+ WH Receive Data + 3 Tx- OR Transmit Data 4 Rx- BU Receive Data -

Thread FE - Functional earth (housing)

Table 6.4: Pin assignment X2



Preferably, please use the ready-made cables "KB ET-…-SA…", see chapter 15.2.3.

Ethernet cable assignment

X2 RJ 45

Tx+

Tx-

Rx+

Rx-

Figure 6.7: HOST / BUS IN cable assignments on RJ-45

Notice for connecting the Ethernet interface!

Ensure adequate shielding. The entire connection cable must be shielded and earthed. The Rx+/Rx- and Tx+/Tx- wires must be stranded in pairs. Use CAT 5 cables for the connection.

48 Technical description LES Leuze electronic

Tx+ (1) Tx- (2)

Rx+ (3)

Rx- (6)

Electrical connection

Out4

InSel 1

Out3

GND

Out2

InSel 3

InSel 2

Out1

M12 socket

(A-coded)

6.3.3 Connection X3 - switching inputs/outputs (only LES 36/VC6 and LES 36HI/VC6)

X3 (8-pin socket, A-coded)

Pin Name Core color Remark

1 Out4 WH Output detection result 4 2 Out3 BN Output detection result 3 3 GND GN Ground 4 Out2 YE Output detection result 2 5 Out1 GY Output detection result 1 6 InSel3 PK Selection Inspection Task Bit 3

7 InSel2 BU Selection Inspection Task Bit 2

8InSel1

RD Selection Inspection Task Bit 1

Table 6.5: Pin assignment X3

Switching outputs of connection X3

Out1 to Out4 are each a logic combination of analysis results of the individual AWs. This logic operation is defined in LRSsoft (see chapter 9.4 "Parameter settings/Parameters tab"). Up to 16 different logic combinations of the AW's and respective result mappings on Out1 to Out4 can be combined into inspection tasks.

Switching inputs of connection X3

The 3 switching inputs InSel1-3 are used to select the inspection task 0-7. In this context, "000" stands for Inspection Task 0, "001" for Inspection Task 1, etc. The switching time between 2 inspection tasks is < 100ms

(MSB)

(LSB)

Notice!

The Inspection Tasks 8-15 can be switched via PROFIBUS or Ethernet. The setting via Ethernet overwrites the inspection task set via input InSel1-3.

Leuze electronic Technical description LES 49

TNT 35/7-24V

Electrical connection

VP 1

DGND

M12 socket

(B-coded)

6.3.4 Connection X4 - PROFIBUS DP (only LES 36/PB)

X4 (5-pin socket, B-coded)

Pin Name Remark

1 VP Supply voltage

2 A Receive/transmit data

3 DGND Data reference potential 4 B Receive/transmit data

5 FE Functional earth

Thread FE Functional earth (housing)

Table 6.6: Pin assignment X4 for LES 36/PB

Notice!

Connection X4 PROFIBUS DP is assigned only on the LES 36/PB.

The connection to the PROFIBUS DP is made via the 5-pole X4 M12-socket with an external Y plug adapter. Assignments correspond to the PROFIBUS standard. The Y plug adapter enables the replacement of the LES 36/PB without interrupting the PROFIBUS cable.

The external Y plug adapter is also needed if the LES 36/PB is the last network device. The external bus terminating resistor (termination) is then connected to this. The 5V-supply for the termination is connected to X4.

+5V (termination)

RxD/TxD-N, green

RxD/TxD-P, red

Notice!

For the connection, we recommend our ready-made PROFIBUS cables (see chapter 15.2 "Accessories")

For the bus termination, we recommend our PROFIBUS terminating resistor (see chapter

15.2 "Accessories")

50 Technical description LES Leuze electronic

Electrical connection

n. c.

1-10V

4-20mA

AGND

M12 socket

(A-coded)

6.3.5 Connection X4 - voltage/current output (LES 36/VC, LES 36HI/VC6)

X4 (5-pin socket, A-coded)

Pin Name Core color Remark

1 n.c. BN not used 2 4-20mA WH Analog current output 3 AGND BU Reference potential for the analog

4 1-10V BK Analog voltage output 5 FE GY Functional earth

Thread FE Functional earth (housing)

Table 6.7: Pin assignment X4 for LES 36/VC

Notice!

Connection X4 analog output is assigned only on the LES 36/VC, LES 36HI/VC6. Analog outputs 1-10V (voltage) and 4-20mA (current) may only be used alternately; the selection is made with LESsoft in the Analog Output tab.

Connection of the analog output is made via the 5-pin, M12-socket X4.

Attention!

When connecting the analog output, note the permissible load resistance:

• Voltage output 1 … 10VDC: R

• Current output 4 … 20mADC: R

2k

500

output

Characteristic curve of the analog output

Response of the analog output

The LES is equipped with an analog output with linear response within the respective measurement range. There is a departure from linearity above and below the linear area. In spite of this, values above the maximum (> 20 mA or > 10 V) or below the minimum (< 4 mA or < 1V) specified for the measurement range can still clearly be seen for the output values.

The analog output can be conveniently configured with LESsoft. To obtain the most exact resolution possible, the range of the analog output should be set as small as the application will permit (the minimum adjustment range is 10mm). The characteristic output curve can be configured as rising or falling. For this purpose, both distance values Position Min. Val. and Position Max. Val. for the minimum and maximum analog output value are set accordingly, see figure 6.8.

Leuze electronic Technical description LES 51

TNT 35/7-24V

Electrical connection

No measurement

is possible

Measurement possible, measurement

result below lower limit, signal not linear

Measurement possible, measurement

result above upper limit, signal not linear

Measurement possible,

measurement result above upper limit,

signal constant

No measurement

is possible

Measurement

Output value

[mm]

Lower limit Upper l imit

U [V]

approx. 10.5

I [mA]

approx. 21

Value range

0,53 0,42

Figure 6.8: Response of analog output LES

Possible value ranges depending on set analog output value:

LES 36… LES 36HI…

X-coordinate -300 … +300mm -70 … +70 mm

Z-coordinate +200 … +800 mm +200 … +800 mm

Height difference 0 … 600mm 0 … 400mm

Width 0 … 600mm 0 … 140mm

Notice!

Valid Z-values are output 10mm above and beyond the max. measurement range: 190 … 810mm.

52 Technical description LES Leuze electronic

7 Display and control panel

OLED display 128 x 32 pixels

Key pad with 2 buttons

See "Control buttons" on page 53.

Device LEDs

green and yellow

See "LED status displays"

on page 53.

Laser beam

7.1 Indicator and operating elements of the

Figure 7.1: Indicator and operating elements of the LES

After switching on the supply voltage +U the green LED illuminates continuously: the LES is in measure mode. The OLED display shows the alignment aid and the status display.

and following error-free initialization of the device,

Display and control panel

7.1.1 LED status displays

LED State Display during measurement operation

Green Continuous light Sensor ready

Yellow Continuous light Ethernet connection established

Table 7.1: LED function indicator

7.1.2 Control buttons

The LES is operated using the  and  buttons, which are located next to the OLED display.

Leuze electronic Technical description LES 53

Off Sensor not ready

Flashing Ethernet data transmission active Off No Ethernet connection

TNT 35/7-24V

Display and control panel

waiting for PB

L450 M450 R450 T00 X-151 fRun

7.1.3 Displays

The display changes depending on the current operating mode. There are the following three display modes:

• Alignment aid and status display

•Command mode

• Menu display The menu display is accessed by pressing one of the two control buttons. Operation of the LES via the menu is described in chapter 7.2.2.

With PROFIBUS devices, the bus state is first displayed after power-on (displayed for approx. 3s). If the PROFIBUS was detected, alignment aid and status are then displayed.

Alignment aid

As an alignment aid, the current measurement value at the left edge (Lxxx), in the middle (Mxxx) and at the right edge (Rxxx) of the detection range is displayed in the OLED display in units of millimeters. If no object is detected or if the distance is too small, distance value



Align the light section sensor by rotating it about the y-axis in such a way that the same value is indicated for L, M, R.

Status display

Displayed on the second line of the display is the selected inspection task (Txx), a measurement value as well as the current sensor state (see chapter 4.2 "Operating the sensor").

The indication of the sensor state in the display has the following meaning:

• fRun = Free Running

• Trig = Triggering

• !ACt = Activation (laser on/off)

T12 means that Inspection Task 12 is currently active, for example. Value range: T00 to T15.

Meaning of the measurement value display:

• X-151 means that the X-coordinate of the right-most measurement point is at position

-151mm.

• x 040 means that the X-coordinate of the left-most measurement point is at position +40mm.

• Z 600 means that the Z-coordinate of the right-most measurement point is at position 600mm.

• Z 500 means that the Z-coordinate of the left-most measurement point is at position +500mm.

• W 230 means that the width of the object is 230mm.

• H 059 means that the height of the object is 59mm.

000 (mm) appears in the display.

54 Technical description LES Leuze electronic

Display and control panel

T00 no PB fRun

Command Mode

Definition of the displayed measurement value:

• For analog sensors, the measurement value assigned to the analog output is displayed in mm.

• For sensors with PROFIBUS, the measurement value assigned under Edge 1 - Profibus Inputs 1 is displayed.

If, for PROFIBUS devices, no PROFIBUS is detected following power-on, no PB appears in the middle of the bottom line.

The following options are available for the sensor status: fRun means Free Running, Trig means triggered (see chapter 4.2.3 "Triggering - Free Running") and !ACK means that the sensor is deactivated (no laser line, see chapter 4.2.2 "Activation - laser on/off").

Command mode

If the LES is connected to a control, the control can put the LES into a command mode in which it receives and executes commands (see chapter 10.2.9 "Evaluation telegram"). In command mode, the OLED display has one line.

Command Mode appears on the first line of the display.

Notice!

If errors occur during operation, these are shown on the display. Notices can be found in chapter 12.3.

Leuze electronic Technical description LES 55

TNT 35/7-24V

Display and control panel

7.2 Menu description

7.2.1 Structure

Level 1 Level 2 Level 3 Explanation / Notes Default

Settings

Menu Exit



Table 7.2: Menu structure

Set Act. Insp. Task



00: Task 0



Set Act. Insp. Task

00: Task 0



Ext. Task Selection



Display



Data Output

Ethernet

Data Output

Ethernet



Ethernet

Factory Settings



Set Act. Insp. Task

00: Task 0





Set Act. Insp. Task

15: Task 15





Ext. Task Selection





Ext. Task Selection





Display





Display

Off

Display

Auto





Prescaler Value









IP Address

192.168.060.003





001



Here you select the active task 00 to

15.



If you press  here, external task changeover will be activated. Task



changeover via the display / menu is NOT possible. If you press  here, task changeover will be activated via the display /menu.



External task changeover is possible.

Always on with maximum brightness



Off; is switched back on after



keyboard actuation Display set to full brightness after keyboard actuation for approx. 1min.,



dimmed thereafter



Attention: the value is permanently set to 1 and cannot be changed.

Here you can set the IP address of the



LES.

NOT

56 Technical description LES Leuze electronic

Display and control panel

Level 1 Level 2 Level 3 Explanation / Notes Default

Ethernet

Factory Settings



Factory Settings

Inactive



Factory Settings

Inactive



Password Check

Inactive



Password Check

Inactive



Slave Address

126



Slave Address

126



Table 7.2: Menu structure





















Net Mask Address

255.255.255.000

Port Number Local

9008

Port Number Dest.

5634





Factory Settings

Inactive

Factory Settings

Execute





Password Check

Inactive

Password Check

Activated





Slave Address

126





Here you can set the relevant subnet



mask. Here you can set the local port (at the



LES) for Ethernet communication. Here you can set the destination port



for Ethernet communication (on the PC/process control). Notice: The values configured here are not applied immediately but only when the sensor is switched on the next time.

If you press  here, you can access the superordinate menu without



resetting to factory settings. If you press  here, you will reset the



LES to factory settings (chapter 7.3).

Locks access to the menu with the fixed password "165"

If you press  here, the password



query will not be activated. If you press  here, the password



query will be activated.

Here, you can set the PROFIBUS address of the LES (0 … 126). With address 126 (default), automatic address assignment by the commissioning master is supported.

TNT 35/7-24V

Leuze electronic Technical description LES 57

Display and control panel

Level 1 Level 2 Level 3 Explanation / Notes Default



Menu Exit

Settings

Table 7.2: Menu structure

Notice!

If no button is pressed for three minutes, the LES exits menu mode and switches to measure mode. The OLED display again displays the alignment aid and the sensor status display.

Notice!

After changing the PROFIBUS slave address, a power-on reset must be performed in order to permanently accept the address.

Info



Set Act. Insp. Task











Part no.



50111325

Serial No.

0905A000012

Ext. Info

008

Software

V01.10



Part no.





The part number of the LES is



displayed here.

The serial number of the LES is



displayed here.

The three-digit batch number of the



LES is displayed here.

The firmware version number of the



LES is displayed here. Notice! The complete information on



the product consists of Serial No. and Ext. Info. If service is



required, please provide both numbers!

58 Technical description LES Leuze electronic

7.2.2 Operation/navigation

Data Output

Ethernet



IP Address

192.169.060.003

IP Address

1 92.168.060.003

IP Address

192.168.001.111

IP Address

192.168.001.111 IP Address

192.168.001.111

Display

In menu view, the OLED display has two lines. The currently active menu item is displayed with black text on a light-blue background. The  and tions depending on the operating situation. These functions are represented via icons on the right edge of the display – i.e. to the immediate left of the buttons.

The following displays may appear:

Menu navigation



selects the next menu item ( switches to the submenu shown with inverted colors (



 selects the next menu item (IP Address).

returns to the next higher menu (). At the top menu level, the menu



can be exited here (Menu Exit). The number of bars at the left edge indicates the current menu level:

Selecting values or selection parameters for editing

 selects the next menu item ( -> Net Mask Addr.)

selects edit mode for IP Address.



Editing value parameters

 decrements the value of the currently selected digit (1).

selects the next digit to the right (9) for editing. After having clicked



through all the digits using right of the display. If an impermissible value was entered, the (new entry ) appears and no checkmark is offered for selection.

Display and control panel

buttons both have different func-



Ethernet

a checkmark () appears at the bottom



Data Output

 symbol

Leuze electronic Technical description LES 59

 changes the edit mode,

saves the new value (192.168.001.111).



 changes the edit mode,

selects the first digit (1) for renewed editing.



 changes the edit mode,

rejects the new value (in this example, the factory setting



192.168.060.003 remains saved).

Editing selection parameters

 displays the next option for Display (Off).

returns to the next-higher menu level and retains On.



 appears.

appears.

 appears.

TNT 35/7-24V

Display and control panel

Display

Off

Display Off

FactorySettings Execute

Really Reset Yes-Ret No-Dwn

reset canceled

reset done

 displays the next option for Display (Auto).

selects the new value Off and displays the menu for confirmation:



 changes the edit mode,

saves the new value (Off).



 changes the edit mode,

rejects the new value (On remains saved).



Notice

To ensure that values that were changed via the menu are also applied, you should disconnect the sensor from its power supply for a brief period after a change of values.

7.3 Reset to factory settings

The factory settings can be reset in three different ways:

• Hold down the

• Factory Setting menu item

•By means of the LESsoft configuration software

As an example, the first of the methods mentioned above is described below:



When applying the supply voltage, press the  button to reset the configuration of the LES to factory settings.

The display shown next to here appears.

button while connecting the supply voltage



appears.

appears.

Interrupting a reset

Pressing  causes the adjacent display to appear. If you now press the

button, you will exit the menu without resetting the LES to factory



settings.

Executing a reset

Pressing the  button while the checkmark () is displayed causes the adjacent safety prompt to appear.

Pressing  interrupts the reset process; reset canceled appears in the display for approx. 2s. Afterward, the LES returns to measure mode.

Pressing made previously are permanently lost. reset done appears in the display for approx. 2s; the LES then returns to measure mode.

You can select the resetting to factory settings also via LESsoft.



60 Technical description LES Leuze electronic

resets all parameters to the factory settings. All settings



In the Configuration menu select the entry Reset to Factory Settings.

Commissioning and configuration

8 Commissioning and configuration

8.1 Switching on

After switching on the supply voltage +UB and following error-free initialization of the device, the green LED illuminates continuously: the LES is in measure mode.

Notice

After a warmup time of 30 min., the light section sensor has reached the operating temperature required for an optimum measurement.

8.2 Establish connection to PC

The LES is configured via a PC using the LESsoft program before it is integrated into the process control.

In order to be able to establish an UDP communication with the PC, the IP address of your PC and the IP address of the LES must lie in the same address range. The LES has no builtin DHCP client, so that you need to set the address manually. This is done the easiest way via the PC.

Notice!

If you use a desktop firewall, please make certain that the PC can communicate with the LES via the Ethernet interface by means of UDP on ports 9008 and 5634 (these ports are preset at the factory, but may have been changed by the user, see chapter 7.2 "Menu description"). Furthermore, the firewall must allow ICMP echo messages to pass through for the connection test (ping).

If the PC is usually connected to a network using DHCP address allocation, the easiest way to access the LES is by applying an alternative configuration in the TCP/IP settings of the PC and connecting the LES to the PC.



Check the network address of the LES by pressing the  button during measure mode of the LES twice in succession, then by pressing  twice and followed by pressing the

button again.



This will take you to the Ethernet submenu and enable you to read the current settings of the LES consecutively when pressing  repeatedly.



Make a note of the values for IP-Address and Net Mask Addr..

The value in Net Mask Addr. specifies which digits of the IP address of the PC and LES must match so that they can communicate with each other.

Address of the LES Net mask Address of the PC

192.168.060.003 255.255.255.0 192.168.060.xxx

192.168.060.003 255.255.0.0 192.168.xxx.xxx

Table 8.1: Address allocation in the Ethernet

Leuze electronic Technical description LES 61

TNT 35/7-24V

Commissioning and configuration

Instead of xxx you can now allocate any numbers between 000 and 255 to your PC, but NOT THE SAME numbers as contained in the address of the LES.

For example 192.168.060.110 (but not 192.168.060.003!). If LES and PC have the same IP address, they cannot communicate with each other.

Setting an alternative IP address on the PC



Log into your PC as administrator.



Using Start->System control go to the Network connections (Windows XP) menu or

to the Network center and release center (Windows Vista) menu.



There, select LAN Connection and right-click to open the corresponding properties page.



Select the Internet protocol (TCP/IP) (by scrolling down, if necessary) and click on Properties.



In the Internet protocol (TCP/IP) Properties window select the Alternate configuration tab.



Set the IP address of the PC in the address range of the LES. Attention: do not use the same as for the LES!



Set the subnet mask of the PC to the same value as on the LES.



Close the configuration dialog by confirming all windows using OK.



Connect the interface X2 of the LES directly to the LAN port of your PC. Use a KB ET-…-SA-RJ45 cable for the connection, see table 15.9

The PC first tries to establish a network connection via the automatic configuration. This takes a few seconds, after which the alternate configuration, which you just set, is activated. The PC can now communicate with the LES.

Information about configuring with the LESsoft can be found in chapter 9.

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8.3 Commissioning

For the commissioning and integration of the sensor in the process control the following steps are necessary:

1. LES configuration - see chapter 9.

2. Programming process control - see chapter 10 and chapter 11. or

3. Connect analog output accordingly - see chapter 6.3.5.

4. Connect switching inputs and outputs accordingly - see chapter 6.3.3.

5. When connecting in the Ethernet process controls, the IP configuration of the LES is to be adjusted so that the LES can communicate with the process control. The values corresponding to the following screenshot are preset in the LES at the factory. If you would like to set different values, you must change the values via the display of the LES in menu item Ethernet (see "Menu description" on page 56). You can test the changed values by entering them in the Configuration area in LESsoft and then clicking the Check Connectivity button.

6. Connect LES to the process control. This can be performed for all LES via the Ethernet interface or, depending on model, via the analog outputs or the PROFIBUS.

7. Establish connections for activation, triggering and cascading, if necessary.

Commissioning and configuration

Notice on connecting multiple light section sensors via Ethernet

If several sensors are to be activated, all sensors as well as the control must receive different IP addresses on the same subnet. For all sensors different ports must be configured in

the Sensor area as well as in the Client/PC area.

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9 LESsoft configuration software

9.1 System requirements

The PC used should meet the following requirements:

•Pentium

or compatible models by AMD The processor must support the SSE2 instruction set.

• At least 512 MB free main memory (RAM), 1024 MB recommended

•CD-ROM drive

• Hard disk with at least 1 GB available memory

• Ethernet port

•Microsoft

9.2 Installation

Notice!

If present, uninstall Matlab Runtime before beginning with the installation of the LXSsoft Suite.

The LXSsoft_Suite_Setup.exe installation program is located on the supplied CD. Alternatively, you can download the program in the Internet at www.leuze.com.

Notice!

Copy this file from the CD to an appropriate folder on your hard drive. Administrator privileges are necessary for this purpose.

Please note that the standard text size setting is used. For Windows XP, the necessary DPI setting is 96 DPI, for Windows 7, the display is to be set to "Smaller - 100%".

or faster Intel® processor > 1.5 GHz (Pentium 4, Celeron, Xeon)

Windows XP from Service Pack 2 / Windows 7

(Athlon 64, Opteron, Sempron)



To start the installation process, double-click on file LXSsoft_Suite_Setup.exe.



In the first window, click on Next.

In the next window, you can select which configuration software you would like to install.

You will need LPSsoft for configuring light section sensors of the LPS series.

You will need LRSsoft for configuring light section sensors of the LRS series.

You will need LESsoft for configuring light section sensors of the LES series.



Select the desired options and click on Next and, in the next window, click on Install.

The installation routine starts. After a few seconds, the window for selecting the installation language for the Matlab Compiler Runtime (MCR) appears. The MCR is used for the configuration in LESsoft. It is only available in English or Japanese.

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

Therefore keep in the Choose Setup Language window the selection English and click on OK.

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Depending on the configuration of your Windows system, the dialog shown below may then appear (missing component VCREDIST_X86).



Click on Install.

Two additional installation windows will appear, which do not require any further entry.

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After some time (up to several minutes depending on the system configuration) the start screen of the MCR installer will appear.



Click on Next.

The window for entering user data appears.



Enter your name and the company name and then click on Next.

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

It is essential that you retain the default folder in the window for the selection of the installation path (Destination Folder).

The standard path is C:\Programs\MATLAB\MATLAB Compiler Runtime\.



Click on Next and in the next window click on Install.

The installation will start and a status window will be displayed. This can again take several minutes.

Following successful MCR installation, the InstallShield Wizard Completed window appears.



Click on Finish to end the MCR-installation.

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The window for selecting the installation path for LESsoft/LPSsoft/LRSsoft now appears (provided you selected this option).



Keep the default folder and click on Next.

The installation of LPSsoft starts. If you also selected LRSsoft and LESsoft for installation, upon completion of the LPSsoft installation, the same window then reappears for entering the installation path for LRSsoft and LESsoft.



Keep the default folder in this case as well and click on Next.

Upon completion of the installation process, the window shown above appears.

The installation routine added a new Leuze electronic program group in your Start menu that contains the installed programs LESsoft/LPSsoft/LRSsoft.



Click on Finish and then start the desired program from the Start menu.

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9.2.1 Possible error message

Depending on the setting of the display, the "Width and Height must be >0" error message may be output. The cause is an incompatible setting of the display.

Notice!

For Windows XP, the necessary DPI setting is 96 DPI. For Windows 7, the display is to be set to "Smaller - 100% (default)".

The setting can be adjusted as follows.



Adjust the display for Windows XP by selecting the value " 96 DPI" under Properties

-> Display -> Settings -> Extended -> Display -> DPI setting.



For Windows 7, adjust the display via Control Panel -> Display by setting the display to "Smaller - 100% (default)".

Depending on the system configuration the adjacent error message can appear at this point.

The cause of this error message is a bug in the MCR installation routine, which does not set the environment variable Path correctly in some systems.

That, however, can easily be corrected without reinstallation of the MCR.



Open the System properties window located in the System control of Windows under System.



Go to the Advanced tab and click on Environment variables.

The Environment variables window opens.



Scroll down in the System variables area until you find the Path entry.



Click on Path and then on Edit

The Edit system variable window opens.

There in the Variable value field you will find the ;C:\Programs\MATLAB\MATLAB Compiler Runtime\v79\runtime\win32 entry right at the end.



If this entry is missing, copy the entry from this document and insert it together with the preceding semicolon.



Then click on OK and close also all further windows using OK.



Shut Windows down, restart Windows and then start LESsoft by double-clicking on it.

Now the start screen of LESsoft appears, as described in chapter 9.3.

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9.3 Starting LESsoft/Communication tab



Start LESsoft via the respective entry in the Windows Start menu.

The following screen appears:

Figure 9.1: Initial screen LESsoft



In the IP Configuration area, enter the settings for the LES and click on Accept.

You had already determined this data in chapter 8.2.



Click on Check Connectivity to test the connection to the LES.

If the following message appears, the Ethernet connection to the LES is correctly configured: The connection attempt to sensor ... was successful.

Click on the button Connect to sensor:

As a result LESsoft establishes a connection and displays the currently measured 2D profile. In the status line at the bottom left of the display you will now find Online highlighted in green instead of Offline highlighted in red.

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Notice!

The following additional information is displayed in the status line:

• Sensor connection status (Sensor status)

• Number of the Active Inspection Task

• Scan number (Profile Number)

• Encoder value dependent on the sensor type (Encoder Value)

• Connected sensor type

• Analog output status (Analog Output)

Notice!

Once the LESsoft has established a connection to the LES, the laser beam flashes.

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PROFIBUS settings (only LES 36/PB)

For PROFIBUS devices, you can set the slave address and the baud rate in the PROFIBUS tab.

Figure 9.2: PROFIBUS settings

Automatic detection of the baud rate / automatic address assignment

The LES 36/PB supports automatic detection of the baud rate and automatic address assignment via the PROFIBUS.

The address of the PROFIBUS participant can be set automatically by the commissioning tool of the PROFIBUS system (a class 2 PROFIBUS master). For this purpose, the slave address must be set to value 126 in the sensor (factory setting). This is performed by means of LESsoft or via the display.

The commissioning master checks whether a slave has address 126 and then assigns this slave a slave address smaller than 126. This address is permanently stored in the participant. The changed address can then be queried (and, if necessary, changed again) via the display or LESsoft.

The following baud rates can be set:

•Automatic •9.6kBaud

• 19.2kBaud • 45.45kBaud

• 93.75kBaud • 187.5kBaud

• 500kBaud • 1.5MBaud

•3MBaud •6MBaud

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Notice!

After changing the PROFIBUS slave address via the display or LESsoft, a power-on reset must be performed in order to permanently accept the address. For the changed settings to take effect, they must be transferred to the sensor!

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9.4 Parameter settings/Parameters tab



Click on the Parameters tab to access the parameter settings:

Figure 9.3: Parameter settings LESsoft

The LES is adapted to applications in the Parameters tab (Standard tab). First go to the Task Parameters panel and set the values required for operating the LES. Then go to

the Analysis Functions panel and define analysis windows (EAWs, AWs) for edge and object detection.

Finally, save these settings as an Inspection Task by clicking on Apply Settings or Transmit to Sensor.

The analog output is configured in the Analog Output tab (chapter 9.4.5).

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9.4.1 Standard tab - Task Parameters panel

Inspection Task Selection

In the Inspection Task Selection panel, you can select inspection tasks.

Notice!

By default, changeover of the inspection tasks via the PROFIBUS master (PLC) has priority over LESsoft. In this field, the selection of the inspection task with LESsoft is only possible if, under Global Parameters there is no tick in front of Enable External Inspection Task Selection. Otherwise, the inspection task can only be selected via the process interface.

By removing the tick in the Enable External Inspection Task Selection check box, the inspection task cannot be changed via the process interface while configuration is being performed. After configuring with LESsoft and before transmitting the settings to the sensor ('Transmit to Sensor'), the Enable External Inspection Task Selection check box must again be selected. Only then can inspection tasks be selected via the process interface.

The upper drop-down menu Inspection Task Selection lets you select one of the 16 possible inspection tasks. After the selection of the inspection task, the associated parameters are loaded and displayed. You can edit these parameters and save the edited parameters under the same name.

In the Name field, you can assign a meaningful name (max. 12 characters) to the inspection task selected above and save it by clicking on Accept.

By saving via the button Apply Settings, the currently displayed inspection task is temporarily stored in the sensor. When switched off, the data/settings are lost.

By saving via Configuration -> Transmit to Sensor menu command all inspection tasks created are transmitted to the sensor, where they are permanently stored.

Notice!

If an inspection task was changed, permanent storage in the sensor should be performed with Configuration -> Transmit to Sensor.

The common procedure for creating and storing inspection tasks is described in chapter

9.6, "Definition of inspection tasks" on page 94 .

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Operation Mode

In Operation Mode you can configure using Free Running that the LES continuously detects and outputs measurement data (factory setting). With Input Triggered the LES captures measurement data only if a rising edge is present at the trigger input or if one of the "Ethernet Trigger" (chapter 10.3.4) or PROFIBUS Trigger (chapter 11.5) commands is being used. Detailed information on this topic can be found in chapter 4.2.3.

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Activation

Under Activation the Regard setting has the effect that the laser is switched on and off according to the level at the activation input or via PROFIBUS. Detailed information on this topic can be found in chapter 4.2.2.

When the Disregard setting has been selected, the laser always remains switched on, independent from the level at the activation input or the PROFIBUS activation (factory setting).

Trigger Output Mode

Under Trigger Output Mode you can activate the cascading output using Cascading. Detailed information on this topic can be found in chapter 4.2.4. When the Disable setting has been selected, the cascading output will not be set (factory setting).

Light Exposure

Using Light Exposure you can control the exposure duration of the laser during measure- ment value detection and adapt it to the reflective properties of the objects to be detected.



Select an exposure setting that displays a continuous line around the object contour. Then try to achieve a line on a flat surface that is as continuous as possible.

Field of View

Using Field of View you can restrict the measurement range of the LPS. The same happens if you click on the square handles of the measurement range framed in blue with the mouse and then pull.

Factory settings for Field of View:

LES 36… LES 36HI…

Min X -300 -70

Max. X 300 70

Min. Y 190 190

Max. Y 810 610



By restricting to the necessary detection range, ambient light or undesired reflections can be suppressed.

Apply Settings

The Apply Settings button temporarily transmits the settings for the current inspection task to the sensor. When switched off, the data/settings are lost.

Notice!

If an inspection task was changed, permanent storage in the sensor should be performed with Configuration -> Transmit to Sensor.

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9.4.2 Standard tab - Analysis Functions panel

In the Analysis Functions panel, the primary settings of the LES for realizing applications are made.

Edit Analysis Windows

In the Analysis Functions panel, use the Edit Analysis Windows button to define the rectangular analysis window. You can define up to four edge analysis windows (EAW Edge Analysis Window) and up to four normal analysis windows (AW - Analysis Window).

Notice!

EAWs are used for edge detection; they can also be us ed for ob ject detection. In AWs, only object detection is possible. How evaluation of the measurements functions with EAWs and AWs is described in chapter 4.3 and chapter 4.4.

Click the Edit Analysis Windows button to open the table for defining the analysis windows.

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Notice!

After changing the detection range by dragging the black frame with the mouse, click the button Accept Analysis Window Rectangle so that the new values are accepted. If you click somewhere else in the Edge Analysis Window Definitions window, the values prior to changing the detection range by mouse are restored.

Notice!

After you have defined the size and position of an analysis window, the settings must be transmitted to the sensor. To do so, click the Apply Settings button. If the settings are to be saved permanently in the sensor, you must also execute the command Transmit to Sensor in the Configuration menu.

Figure 9.4: Edit Analysis Windows

Alternatively, the spatial position and size of EAWs and AWs can be configured with the mouse or by means of keyboard entries. After selecting the Active check box (by clicking), a black frame with handles appears at the left in the display of the detection area. You can now use the mouse or keyboard to position the analysis window.

Using the mouse

Click and drag the handles of the analysis window using the mouse to change its size and position.

Notice!

The font of the Accept Analysis Window Rectangle button turns black after size and/ or position of the analysis window have been changed using the mouse. You have to click the button in order to accept the values in the 2D representation.

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Keyboard input

Alternatively, you can enter the desired position values directly into the Minimum/Maximum X/Z columns under Dimensions.

Notice!

The changed settings must be transferred to the sensor with Apply Settings.

Position type

Here you determine whether the coordinates of an analysis window are to be absolute, or whether the position of an EAW is to change relative to a found edge.

The first analysis window provides the reference and must therefore be configured with absolute coordinates. The other analysis windows can be defined relative to an edge in one of the previous EAWs.

Relative to Edge

Here you select the reference edge (e.g. within EAW1) for relative tracking of EAW2. Possible settings are:

• Tracking in X-direction: Rightmost X, Leftmost X

• Tracking in Z-direction: Rightmost Z, Leftmost Z

• Simultaneous tracking in X and Z-direction: Rightmost XZ, Leftmost XZ

Offset X / Offset Z

If you have selected relative tracking for an analysis window, you can define the offset of the X and Z-position relative to the reference edge.

You define the window width / height with Width / Height. The values Min X, Max. X, Min Z, Max. Z are ignored in this case.

Edge Detection Definitions

Here, you define the parameters for edge detection in up to four EAWs. Select the check box in the Active column to activate the respective EAW.

For the edge plausibility check, the Sequent Hits parameter determines the minimum number of successive measurement points (see chapter 4.3.3). For orientation as to how the Sequent Hits parameter is to be selected, the currently measured number of successive object points in the EAW is shown in the Current Sequent Hits Left and Current Sequent Hits Right columns.

An edge is detected if Current Sequent Hits Left or Current Sequent Hits Right is greater than or equal to Sequent Hits. In this case, the status of the EAW in the Current

Status column is green (ok). If an edge is detected, the status of the EAW in the Current Status column is red (not ok). If the EAW is not activated, the status is gray.

If not enough measurement points occurred in succession in an EAW, edge detection and object measurement within this EAW is not possible.

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Analysis Window Definitions

Here, you define the parameters for object detection in up to four EAWs and four AWs. Select the check box in the Active column to activate object detection in the respective analysis window. The optionally selectable object detection enables stable measurement results even under problematic conditions.

In the Current Hits column, LESsoft displays the number of measurement points that are detected in the analysis window. In the Hits On column, you define how many measurement points must be detected in order for the evaluation result of the object detection to be ok in the respective analysis window. If the result is ok, a green dot is displayed in the Current Status column. The state remains green until the number of detected hit points becomes equal to or smaller than the value you set in the Hits Off column.

The entries in Hits On and Hits off thus let you configure a switching hysteresis to prevent an (unwanted) change of the switching state under admissible changes in the object position or other physical quantities.

The further processing and combination of results from object detection occurs by pressing the Edit Logical Combinations button.

Notice!

The changed settings must be transferred to the sensor with Apply Settings.

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Edit Logical Combinations

By clicking on the Edit Logical Combinations button, the following window appears.

Figure 9.5: ’Edge Analysis Window Combination Tables’ window

Edge State (result of edge and object detection)

The AND combination result of the Object Point/EAW State (edge detection state) line and the AW Logic Analysis Depth (state of the logic for object detection) line are displayed here for each EAW.

If no object detection was configured, the Edge State corresponds to the status of edge detection.

• Green state = edge detection and object detection ok

• Red state = edge detection and object detection not ok

Notice!

For sensors with analog output, a valid measurement value transmission for edges only occurs at the analog output if the Edge State is ok.

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Object Point/EAW State (result of edge detection)

For each EAW, the result of the edge plausibility check is displayed here for the left edge (Left Most) and right edge (Right Most).

• Green state = edge detected = ok

• Red state= no edge detected = not ok

The result is identical to the status under Edit Analysis Windows -> Edge Detection Definitions.

Notice!

A valid measurement value transmission for edges only occurs if the Object Point/EAW State is ok.

Show Edge

If the check box is selected, the left edge position is displayed in the 2D view with a green coordinate cross, the right edge position with a blue coordinate cross.

Figure 9.6: Display of the edge positions (green and blue) in the 2D display

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X, Width (X), Z, Height (Z)

In the fields of these lines, the current measurement values LX, RX, LZ, RZ, W and H are displayed for each EAW in mm (see chapter 4.3.3), provided the EAW was defined.

Measurement values and their meaning:

• Edge positions: LX, LZ, RX, RZ

- LX = Left edge X-coordinate

- LZ = Left edge Z-coordinate

- RX = Right edge X-coordinate

- RZ = Right edge Z-coordinate.

• Width of objects: W (calculated from the distance of RX and LX in the X direction).

• Height difference of left and right edge: H (calculated from the distance of RZ and LZ in the Z-direction).

Profibus Inputs 1 , Profibus Inputs 2

The selection of which process values are transmitted via PROFIBUS is made here. With PROFIBUS devices, two measurement values (LX, RX, LZ, RZ, W or H; see chapter 4.3.3) can be output per EAW via the PROFIBUS. In the Profibus Inputs 1 and Profibus Inputs 2 fields, you can configure which measurement values these are for up to four edge analyses.

Notice!

The changed settings must be transferred to the sensor with Apply Settings.

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Application example 1: web edge measurement

In the following example, the right edge position of web material is to be ascerta in ed . Edg e analysis window EAW1 is positioned in the measurement range so that the web material is located within the window.

The ascertained position of the right edge is -9.6mm (column The distance from the edge to the sensor is 366.6mm (column

Edge1

Right Most

-> line X).

->line Z).

Figure 9.7: Application example 1: web edge measurement

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Application example 2: height and width monitoring of cubic objects

In the following example, the height and width of a carton are measured. For the width measurement, EAW1 is positioned above the support surface. For the height measurement, EAW2 is positioned to the side of the carton. The height of EAW2 is configured so that both the support surface as well as the top side of the carton are located in EAW2.

The ascertained width of the carton is 49.7mm (column Edge1 -> line Width (X)). The ascertained height is 49.6mm (column Edge2 -> line Height (Z)).

All measurement results are displayed in the window to the right of the 2D view.

Figure 9.8: Application example 2: height and width monitoring of cubic objects

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Additional object detection with LES sensors

In the lower part of the Edge Analysis Window Combination Tables window (see figure 9.5), an additional object detection can be configured.

Notice!

Object detection is only possible if object detection was activated in the EAW/AW. This is performed in LESsoft by selecting the check box in the Active column under Edit Analysis Windows -> Analysis Window Definitions.

EAW1 … EAW4, AW05 … AW08

Specify here which analysis windows are to be logically AND linked with one another with respect to the analysis of the Current Hits . With the "+" selection, the (E)AW state is taken into account in the AND combination. If "-" is selected, the inverse of the (E)AW state is taken into account.

The result of the logic combination is displayed in the AW Logic line.

Notice!

An entry is only possible if object detection was activated in the EAW/AW.

AW Logic

The status display of the AND combination result of EAW1 … EAW4, AW05 … AW08 is shown here:

• Green state = ok

• Red state = not ok

Notice!

A display appears only if object detection was activated in an EAW/AW.

Analysis Depth

The analysis depth is entered here. The analysis depth is the number of successive evaluations with the same result that are necessary for a change of the combination result (value range: 1 … 255).

Notice!

A display appears only if object detection was activated in an EAW/AW.

Notice!

Select a larger value for the analysis depth to give the LES a reliable switching behavior. The response time of the sensor during object detection increases accordingly (example: analysis depth = 3 -> response time 3 x 10ms = 30 ms). Interfering signals of individual scans are suppressed. If an analysis depth = 1 (factory stetting beginning with firmware version 01.25) is selected, the response time is 10ms.

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AW Logic Analysis Depth (result of object detection)

The status display of the combination result of AW Logic appears here, taking into account the analysis depth.

• Green state = ok

• Red state = not ok

Notice!

A display appears only if object detection was activated in an EAW/AW.

Notice!

The changed settings must be transferred to the sensor with Apply Settings.

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Application example 3: width monitoring of cubic objects with object detection (narrow objects are not to be detected)

The application example is similar to application example 2. The width of cartons is to be measured. For narrow objects, the measurement is to be suppressed. For width measurement, EAW1 is to be positioned above the support surface as in application example 2. In addition, object detection is configured in the Edit Analysis Windows window -> Analysis Window Definitions.

Notice!

The threshold for object detection in EAW1 is 60 hits. In figure 9.9 there is a wide object with Current Hits = 68 in the measurement range of the LES. The object is detected, the state of object detection is green (ok). In the Edge Analysis Window Combination Tables window, the additional object detection is activated by selecting + under EAW1. All results are green (ok). The ascertained width of the carton is 49.2mm (column Edge1

-> line Width (X)).

Figure 9.9: Application example 3.1: width monitoring of cubic objects with object detection

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In figure 9.10 there is a narrow object with Current Hits = 20 in the measurement range of the LES. The object is considered to be not detected, the state of object detection in the Edge Analysis Window Definitions window -> Analysis Window Definitions is red (not ok).

Figure 9.10: Application example 3.2: width monitoring of cubic objects with object detection

In the Edge Analysis Window Combination Tables window, the additional object detection is activated by selecting + under EAW1. The result for object detection is not ok (red state). The Edge State (AND combination of the results of edge and object detection) is displayed red (not ok). The ascertained width of the object is 14.2mm (column Edge1

-> line Width (X)).

Notice!

For sensors with analog output, a valid measurement value transmission for edges only occurs at the analog output if the Edge Status is ok (see page 81). In the case of sensors with digital switching outputs at X3 (LES 36/VC6, LES 36 HI/VC6), the status of Edge 1 to 4 is signaled at outputs Out1 to Out4 (HIGH active).

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9.4.3 Standard tab - Single Shot Mode panel

In Single Shot Mode, the sensor carries out an individual analysis only when you click on the Request Measurement button and displays the result in LESsoft until Request Measurement is clicked again.

9.4.4 Standard tab - Global Parameters panel

Under Global Parameters you can use Enable External Inspection Task Selection to configure whether or not the inspection tasks 0 … 15 can be selected via

PROFIBUS.

Notice!

If Enable External Inspection Task Selection is ticked, the inspection task can only be selected via PROFIBUS. In this case, the drop-down menu under Inspection Task Selection has no function.

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9.4.5 Analog Output tab - configuring the analog output (only LES 36/VC)

For analog devices, you can configure the analog voltage and current output of the LES 36/VC in the Analog Output tab.

Figure 9.11: Parameter settings in LRSsoft

The following settings can be made for the analog output:

Edge

Selection of from which EAW (Edge Analysis Window) the measurement value is to be transmitted.

Output Mode

Selection of whether the current or voltage output is to be used as the process interface.

Data

Selection of which value of the selected EAW is to be output at the analog output. Select from the following measurement values:

• Edge positions: LX, LZ, RX, RZ

- LX = Left edge X-coordinate

- LZ = Left edge Z-coordinate

- RX = Right edge X-coordinate

- RZ = Right edge Z-coordinate

• Width of objects: W

• Height difference of left and right edge: H

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Notice!

The selected value is appears in the measurement value display of the display (2nd line) in the middle.

mm For Min. Val.

Measurement value in mm for the lower range limit of the voltage or current (1V/4mA).

mm For Max. Val.

Measurement value in mm for the upper range limit of the voltage or current output (10V/20mA).

Notice!

The minimum adjustable range between the upper and lower range limit of the analog output is 10mm.

Notice!

The changed settings must be transferred to the sensor with Apply Settings.

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9.5 Menu commands

9.5.1 Saving parameter settings/File menu

The File menu i s used to save parameter data to the PC. In this way, settings for various detection tasks can be defined within the scope of commissioning and stored on data carriers and parameter files. During operation, the LES is reconfigured via Inspection Tasks. A parameter file stored on a data carrier can only be used with LESsoft configuration software!

• New creates a new configuration file.

• Open opens a configuration file from the data carrier.

• Save saves the open configuration file with the same name.

• Save as saves the open configuration file under a different name.

• Save as default saves the open configuration as the default setting which is always loaded when LESsoft is opened.

In addition, the File menu offers the possibility to export the following views format to data carriers (available formats: *.png, *.jpg, *.bmp, *.tif):

• Profile View: the current view as 2D view

9.5.2 Transmitting parameter settings/Configuration menu

The Configuration menu is used to exchange parameter data with the connected LES.

• Load from Sensor loads all parameter settings for all defined inspection tasks from the LES and displays them in the software.

• Transmit to Sensor permanently stores all parameter settings of all defined inspection tasks from the configuration software in the LES.

• Reset to factory settings resets the LES to factory settings.

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LESsoft configuration software

Zoom In

Enlarge area:

1. Select Zoom in

2. Click in the view

3. Select Pan

4. Shift the area to be examined into the center of the screen



Repeat until the desired view is reached



Use Reset plots to initial settings to restore the original size.

Zoom Out

Pan Reset plots to initial

settings

9.5.3 Zoom and Pan/toolbar

The Zoom in / Zoom out and Pan buttons of the toolbar allow individual areas of the view to be enlarged for better visual evaluation:

Figure 9.12: Zoom function

After activating the magnifying glass, each click on the view enlarges the displayed section. The enlarged section can then be shifted with the activated hand function to display the area of interest.

Notice!

The click-and-drag method for zooming known from other programs is not possible here. Before LPSsoft is operated further, the tool buttons (Zoom, Pan, …) must be activated.

9.6 Definition of inspection tasks

Typical procedure

1. Start LESsoft and connect the sensor: Click on the Connect to sensor button:

2. Fetch the configuration from the sensor via Load from Sensor or load it from the data carrier with Open.

3. Remove the tick at Enable Selection Inputs.

4. Use Inspection Task Selection to select the inspection task to be modified.

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5. Display and, if necessary, enlarge 2D view of the detection range in the Parameters

tab.

6. Standard tab - Task Parameters panel: define required (E)AWs with mouse or keyboard

in the Analysis Windows Definitions window (Edit Analysis Windows button); confirm each of the set (E)AWs with Apply Settings. Configure the Sequent Hits limit value for the edge plausibility check for each EAW.

7. Configure PROFIBUS process data in the Edge Analysis Window Combination

Tables window (Edit Logical Combinations button) in lines Profibus Inputs 1 and Profibus Inputs 2, or, alternatively, configure the analog output

via the Analog Output tab.

8. Check the process reliability in the Edge Analysis Window Combination Tables

window and in the 2D view.

9. Assign a name (Name) to the inspection task and confirm with Accept.

10. Temporarily transfer the inspection task with Apply Settings.

11. Where applicable: define further inspection tasks with steps 5.-9.

12. Tick Enable Selection Inputs again.

13. Permanently transfer the configuration including all inspection tasks to the sensor with

Transmit to Sensor.

14. Where applicable: save the configuration to data carrier with Save As…

15. Finally, disconnect the connection to the sensor:

click on the button Disconnect from sensor:

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10 Integrating the LES in the process control

10.1 General information

The LES communicates with the process control via UDP/IP using the protocol described in chapter 10.2.9. The protocol operates in two different modes:

• Measure mode

•Command Mode

In measure mode, the LES transmits the evaluation telegram. This is continuously transmitted in "Free Running" operation; in triggered operation, it is transmitted only once per trigger.

In command mode the LES reacts to commands from the control. The commands available are described in chapter 10.2.9.

Notice!

If you use a firewall, please make certain that the control can communicate with the LES via the Ethernet interface by means of UDP on ports 9008 and 5634 (these ports are preset at the factory, but may have been changed by the user, see chapter 7.2 "Menu description"). Furthermore, the firewall must allow ICMP echo messages to pass through for the connection test (ping).

The integration of PROFIBUS device model LES 36/PB in the process control via PROFIBUS is described in chapter 11 "Integration of the LES 36/PB in the PROFIBUS" on page 113.

10.2 Protocol structure: Ethernet

Notice!

The sequence in which the individual bytes are saved varies depending on the operating system. The commands in chapter 10.2.9 and the protocol description are represented in "big endian" format, i.e., the high-byte first followed by the low-byte (0x… hexadecimal).

Windows PCs (and many controls, such as the Siemens S7), however, store data in the "little endian" format, i.e. the low byte first followed by the high byte.



If, in your process environment, the LES does not respond to commands from the control even though communication with LESsoft functions properly, check whether the problem lies with the byte order.

Example: for command 0x434E (Connect to Sensor) a Windows PC must transmit 0x4E and 0x43 in order for it to be understood by the LES. In the transaction number of the answer from LES there is then also 0x4E43 (byte sequence 0x43, 0x4E). The LES sends data as "little endian", i.e., first the low byte and then the high byte.

The possible values of individual bytes and their meaning are described below.

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Protocol structure

The protocol consists of the header (30 bytes) followed by the user data (0 … 75 data words @ 2 bytes). The protocol is used both in command mode when transmitting commands and when acknowledging sensor commands as well as in measure mode.

Header

Startseq. 1

Startseq. 2

Fill character

Command no.

Fill character

Packet no.

Fill character

Transaction no.

Status

Encoder H

Encoder L

Fill character

Scan no.

Type

0xFFFF 0xFFFF 0x0000 0x0059 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000 0x0010 0x0003

…

0xFFFF

fixed value:

Length 4 bytes,

0xFFFF

fixed value:

Length 2 bytes,

0x0000

Length 2 bytes,

possible values:

0x0000

fixed value:

Length 2 bytes,

see chapter 10.2.9

fixed value:

value range:

Length 2 bytes,

0x0000 … 0xFFFF

0x0000

Length 2 bytes,

value range:

Length 2 bytes,

0x0000 … 0xFFFF

value range:

0x0000 0000

Length 4 bytes,

0x0000 … 0xFEFF

0xFFFF FFFF

Length 2 bytes,

0x0000

fixed value:

Length 2 bytes,

value range:

0x0000 … 0xFFFF

Length of the header: 30 bytes

1) For sensor models with encoder input, these 4 bytes contain the encoder value. With the LES, this value is always 0x0000 0000.

Number of user data words

0x0010

fixed value:

Length 2 bytes,

0x0000 / 0x0001 / 0x0002 /

Length 2 bytes, possible values:

0x0003 / 0x0178

10.2.1 Command number

The command number specifies both the command from the control to the sensor as well as the command from the sensor to the control (see chapter 10.2.9).

In measure mode, the sensor always sends an evaluation telegram with command number 0x5354.

10.2.2 Packet number

The packet number serves internal maintenance purposes of the manufacturer.

10.2.3 Transaction number

In measure mode, 0x0000 is always displayed here.

In command mode, the command acknowledgment of the sensor contains the command number of the command that is answered.

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10.2.4 Status

Indicates the state of the sensor. The state is coded as follows:

MSB High-Byte LSB MSB Low-Byte LSB Meaning of the bits

- - - - - - - - - - - - - - - 0 Sensor not connected via Ethernet

---------------1 Sensor connected via Ethernet

- - - - - - - - 0 0 0 1 - - - - Measure mode

--------0010----Menu mode

- - - - - - - - 0 1 0 0 - - - - Command mode

--------1000----Error mode

- - - - - - - 0 - - - - - - - - Sensor deactivated via activation function

-------1 --------Sensor activated via activation function

- - - - - - 0 - - - - - - - - No warning

------1 --------Warning, temporary sensor malfunction

- - - - - 0 - - - - - - - - - - Free Running measure mode

-----1 ----------Triggered measure mode

- - 0 - - - - - - - - - - - - - No error

--1 -------------Error detected, measurement data are still

The LSB of the high byte is always set to 1 as long as the parameter Activation Input has been set to Disregard (Always on) in LESsoft.

If parameter Activation Input is set to Regard, the state of the bit corresponds to the state of the signal of an activation source (input, Ethernet activation).

sent if applicable, the sensor then switches into error mode

Notice!

Independent of the mode that is currently active, the sensor switches to menu mode if a button if the display is touched and then neither responds to commands nor does it transmit measurement data. Menu mode automatically ends after 3 minutes if no buttons are pressed. Alternatively, the user can end menu mode with the Exit menu item.

10.2.5 Encoder High / Low

The encoder counter is implemented in sensor models with encoder input. All other sensors permanently display 0x00000000.

The 4 bytes in Encoder High and Encoder Low specify the encoder counter value for light section sensors with encoder interface. The maximum value is 0xFFFF FFFF. Beyond that an overflow to 0x0000 0000 occurs.

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10.2.6 Scan number

The 2 bytes of the scan number indicate the number of single measurements in chronological order. After each measured profile, this number increases by 1. The maximum value is 0xFFFF. Beyond that an overflow to 0x0000 occurs. The Z- and X-data belonging to a measurement are identified via the same scan number.

10.2.7 Type

Specifies how the detection data are to be interpreted. The fixed default value is 0x0010.

10.2.8 Number of user data

The user data have a variable length of 0, 1, 2, 3 or 75 data words (0, 2, 4, 6 or 150 bytes).

Indicates the number of user data transferred. The fixed default value in detection mode is 0x0059.

10.2.9 Evaluation telegram

In detection mode for the LES, the evaluation telegram is transmitted with command number 0x5354. After the header are 75 user data words with the following structure:

Byte MSB High-Byte LSB MSB Low-Byte LSB Meaning of the bits

31…32 - - - - - - - - - - - - N4 N3 N2 N1 Number of the cur rent inspection task

33…34 - - - - - - - -

35…36 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW1

37…38 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW2

39…40 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW3

41…42 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW4

43…44 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW5

45…46 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW6

47…48 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW7

49…50 - - - - - - - A9 A8 A7 A6 A5 A4 A3 A2 A1 Current number of measurement points (Current Hits) in EAW8

51…52 - - - - - - - - - - - - E4 E3 E2 E1 Results of logic line AW Logic for Edge1 … Edge4

53…54 E4 E3 E2 E1 Results of logic line AW Logic Analysis Depth for Edge1 … Edge4

55…56 E4 E3 E2 E1 Results of edge d etection in line Object Point/EAW State

57…58 E4 E3 E2 E1 Results of Edge State line (edge and object detection)

59…60 Current Sequent Hits Left in EAW1

61…62 Current Sequent Hits Right in EAW1

63…64 Left edge X-value LX in EAW1

65…66 Left edge Z-value LZ in EAW1

67…68 Right edge X-value RX in EAW1

69…70 Right edge Z-value RZ in EAW1

71…72 Width W in EAW1

73…74 Height H in EAW1

AW8 AW7 AW6 AW5 EAW4EAW3EAW2EAW

Results of the individual analysis windows

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Leuze electronic LES, LES 36/VC6, LES 36/VC, LES 36/PB, LES 36HI/VC6 Technical Description

Specifications and Main Features

Frequently Asked Questions

User Manual

Figures and tables

1 General information

1.1 Explanation of symbols

1.2 Declaration of conformity

2 Safety notices

2.1 General safety notices

Documentation

Safety regulations

Repair

2.2 Safety standards

2.3 Approved purpose

Areas of application

2.4 Working safely

3 Operating principle

3.1 Generation of 2D profiles

3.2 Limits of light section sensors

3.2.1 Occlusion

Possible measure against laser occlusion

Possible measures against receiver occlusion

3.2.2 Resolution

4 Device description

4.1 Overview of light section sensors

4.1.1 Mechanical design

4.1.2 General performance characteristics

4.1.3 Line Edge Sensor - LES

Specific performance characteristics

Typical areas of application

4.2 Operating the sensor

4.2.1 Connection to PC / process control

Configuration

Measurement operation

4.2.2 Activation - laser on/off

4.2.3 Triggering - Free Running

PROFIBUS trigger

4.2.4 Cascading

Trigger settings

Cascading settings

4.3 Measurement functions: LES

Functional principle of object and edge detection with the LES

4.3.1 Inspection Task

4.3.2 Edge Analysis Window (EAW)

Characteristics of EAWs

4.3.3 Definition of EAWs and their analysis results

Edge detection

Relative window positioning

Object detection

4.3.4 Application examples for EAWs

Application example: web-edge measurement

Application example: height and width measurement of a cubic object

4.4 Analysis Window (AW)

5 Installation and mounting

5.1 Storage, transportation

Unpacking

5.2 Mounting the LES

5.2.1 BT 56 mounting device

5.2.2 BT 59 mounting device

5.3 Device arrangement

5.3.1 Selecting a mounting location

5.3.2 Aligning the sensor

5.4 Attach laser warning sign

5.5 Cleaning

6 Electrical connection

6.1 Safety notices

6.2 Shielding and line lengths

Shielding:

General shielding information:

Connect the ground potential to the light section sensors

Connecting the cable shield in the switch cabinet

Connecting the cable shield to the PLC

6.3 Connecting

6.3.1 Connection X1 - logic and power

Power supply

Activation input InAct

Trigger input InTrig

Cascading output OutCas

Output "ready" OutReady