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Cedes ObjectC 100 CAN, Руководство программиста

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Programmer's Guide 

 

ObjectC 100

 

 

© CEDES Safety & Automation AG 

http://csa.cedes.com/ 23

 

3.2.

 

Master programming (RS485) 

When using an ObjectC

-

100 RS485

 

controller, the following process should be followed in order to avoid data 

collision: 
 

Create command

Set-up command 
sequence according 
to command list

Send command

Send command 
over interface

Answer arrived?

Yes

No

Evaluate answer

Number ms +1

Number ms < X

Yes

No

Timeout

 

Figure 9: Recommended RS485 communication procedure 

 
 

3.3.

 

Technical data RS485 

Table 50: RS485 Technical data 

Maximum cable length 
(twisted pair / shielded) 

100 meter 

Short circuit protected 

Yes 

Number of addresses

 

0 - 15 

Parity

 None 

Protocol

 None 

Stop bits

 1 

 

Baud rates 

2'400 Baud 
9'600  

Baud  

19'200   Baud 
57'600 Baud 

 

4.

 

Advanced Features 

4.1.

 

Light curtain design 

Applications like height measurement require information regarding individual beam status as well as the exact 
beam positions. This is only possible if the light curtain itself is clearly defined. This chapter defines the light 
curtain and reference beams and also describes specific measurement modes. 
 
The controller ObjectC 100

 

offers many functions to obtain information from the Object100 light curtain. The 

following light curtain functions are described in the given chapters: 

•

  Standard and reverse beam counting mode:  

Chapter 4.2, Figure 10 

•

 

Blanked 

beams: 

    Chapter 

4.7 

•

 

Zone 

monitoring: 

    Chapter 

4.8 

 

•

 

Overheight 

monitoring: 

   Chapter 

4.9 

 

•

 

Overhang 

monitoring: 

   Chapter 

4.10

 

Содержание ObjectC 100 CAN

Страница 1: ...NT NOTICE FOLLOW THE INSTRUCTIONS GIVEN IN THIS MANUAL CAREFULLY FAILURE TO DO SO MAY CAUSE CUSTOMER COMPLAINTS AND SERIOUS CALL BACKS KEEP INSTRUCTION MANUAL ON SITE OBJECTC 100 OBJECT100 SYSTEMS ARE...

Страница 2: ...42 2A Hex 13 2 2 5 19 Restart 44 2C Hex 14 2 2 5 20 Get beam status with light curtain status 100 64 Hex 14 2 3 Extended CAN mode 14 2 3 1 Boot up message 15 2 3 2 Watchdog message 15 2 3 3 Initializa...

Страница 3: ...ll as consulting the valid laws and regulations at the time of installation Should these instructions not be followed or only partially this may lead to a premature malfunction of the system The insta...

Страница 4: ...e parameter determines if a status telegram 1 01 Hex is sent if 1 The light curtain status changes interrupted not interrupted A telegram is sent if all beams are uninterrupted or a light beam is inte...

Страница 5: ...tain status Data Byte 3 8 Data which must be transmitted with a command This command delays the response times according Operation manual Part No 104 906 Chapter 11 2 Table 7 ObjectC 100 CAN response...

Страница 6: ...1 Emitter and receiver have different beam numbers or no light curtain connected 3 0 No overheight 1 Overheight detected 4 5 00 No overhang 01 Front overhang 10 Back overhang 11 Front and back overha...

Страница 7: ...ested Table 11 Command 06 Hex Command 6 06 Hex Response 7 07 Hex Bit Value Bit Value Byte 3 0 7 0 Light curtain okay 1 Light curtain defective Byte 3 8 0 7 0 not used Byte 4 8 0 7 0 Not used 2 2 5 5 G...

Страница 8: ...ted 1 254 Last interrupted beam 1 Byte 5 0 7 0 No beam interrupted 1 254 Maximum number of interrupted beams Byte 6 0 7 1 254 Number of used beams 1 Byte 7 0 1 0 No overheight 1 Overheight Byte 3 8 0...

Страница 9: ...the pitch factor 2 2 5 10 Get scan counter 26 1A Hex The responses to this command contain the number of light curtain scans which have been made since the last command start stop permanent scan comma...

Страница 10: ...verhang with time delay Bit 2 1 Sensor Overhang Bit 3 1 Handle zones Bit 4 1 Handle Potentiometers Bit 5 Not used Bit 6 1 Handle Teaching button Bit 7 Not used See Chapter 4 9 See Chapter 4 10 See Cha...

Страница 11: ...s 1 This mode may cause a high telegram frequency and may cause problems with the Bus communication 2 Select if potentiometer is active or values set by parameter 63 65 3 Delay time 1 n x 13 1 ms 10 m...

Страница 12: ...factor 2 Overhang front means that an overhang is detected as the tray is pulled into the light curtain area 3 Overhang back means that an overhang is detected as the tray is pulled out of the light...

Страница 13: ...verify the response Use command 100 64 Hex instead 2 2 5 17 Get zone status 40 28 Hex This command is a simple way to get the status of a certain zone The zone can be defined by setting a first beam a...

Страница 14: ...m interrupted 7 Beam x 31 Byte 7 0 Beam x 32 0 Beam not interrupted 1 Beam interrupted 7 Beam x 39 Byte 8 0 0 Light curtain free 1 Light curtain interrupted 1 0 Light curtain state not changed 1 Light...

Страница 15: ...x Status Remark Id Std 0764 Hex Address Offset 0764 0765 etc up to 0773 Hex see chapter 6 4 Operation Manual Table 32 Watchdog state State 0 Boot up 4 Stopped 5 Operational 127 Pre operational 2 3 3 I...

Страница 16: ...see chapter 1 1 1 The response to this command sends for each sector of the X axis one bit indicating 0 for not interrupted and 1 for interrupted Table 38 Command 40 Hex Command 64 40 Hex Response 65...

Страница 17: ...ght curtain carries out a measurement effects the result The following chapters describe these effects The event mode is activated using the following parameters Table 40 Settings for event mode Param...

Страница 18: ...eters Table 42 Parameters for periodic mode Parameter Value n Description 75 4B Hex Periodic measuring 3 255 Periodic mode active with time constant tp 77 4D Hex Event measuring 0 Event mode inactive...

Страница 19: ...in Figure 5 with telegram 65 41 Hex and 67 43 Hex Minimum refers to the lowest interrupted beam number and maximum refers to the highest interrupted beam In this case objects that are too small or th...

Страница 20: ...he ObjectC 100 CAN controller is carried out thus Table 44 CAN commands for the configuration of the example above Byte Command Par Value Add ress DLC 1 2 3 4 5 6 7 8 Deactivation of periodic mode 28...

Страница 21: ...06 Inverted Address Command High byte Command Low byte Data Data Data Data Data Data ETX 03 Table 47 RS485 command example Hex Direction Byte1 Byte2 Byte3 Byte4 Byte5 Byte6 Byte7 Byte8 Master PLC to O...

Страница 22: ...Byte 8 Data 00 0000 0000 ETX 03 Hex 0000 0011 3 1 4 Timing RS485 Example for a Baud rate of 19 200 Baud and 1 Stop bit tpd tquestion tanswer Question Master Light curtain Answer Light curtain Master...

Страница 23: ...sses 0 15 Parity None Protocol None Stop bits 1 Baud rates 2 400 Baud 9 600 Baud 19 200 Baud 57 600 Baud 4 Advanced Features 4 1 Light curtain design Applications like height measurement require infor...

Страница 24: ...beam counting direction Beam 1 first beam is located at the physical end of the light curtain inverted Figure 10 Object100 beam definitions and beam counting direction Table 51 Reference to Figure 10...

Страница 25: ...point is defined as the end of the red light curtain housing see Figure 11 Standard beam counting direction Reverse beam counting direction Figure 11 Example of a 25 mm pitch Object100 light curtain...

Страница 26: ...nimal position of the object hmax Max position of the object before the next beam state is active b Height of the aperture 8 mm p Pitch 10 or 25 mm Figure 12 a Object is not recognized from element at...

Страница 27: ...7 Blanked beams The Object100 can be mounted behind a frame e g on a conveyor belt see Figure 14 Therefore the top and or bottom beams may be physically blocked By defining the first beam offset fb_o...

Страница 28: ...ight 1 0 0 1 1 Goods with height 2 0 1 1 1 Goods with height 3 1 1 1 1 Goods with height 4 Zones can be defined as overlapping and zones may contain as few as one beam or as many as all beams Figure 1...

Страница 29: ...output signal if the transported goods exceed a certain height This is easily done with the Object 100 light curtain by defining the beam oh Beam oh defines a beam which when it or any higher beam is...

Страница 30: ...arrier zone CZ and goods zone GZ When a beam in the goods zone is interrupted at least one beam from the carrier zone must also be interrupted otherwise the overhang output will be activated If a cert...

Страница 31: ...wed is adjusted by simply altering the front and back sensors physical distance to the light curtain When the carrier interrupts the front sensor the sensor sends a negative slope signal to the Object...

Страница 32: ...hold Depending on the hardware and the configuration the ObjectC 100 provides a function whereby the outputs Out 1 and Out 2 J12 will be held regardless of the status of the light curtain This functi...

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